{"id":18896,"date":"2026-03-04T10:00:34","date_gmt":"2026-03-04T09:00:34","guid":{"rendered":"https:\/\/sunelements.de\/2026\/03\/04\/optimal-ventilation-correct-heating-how-frost-monitors-keep-the-climate-in-the-greenhouse-stable\/"},"modified":"2026-03-04T11:12:54","modified_gmt":"2026-03-04T10:12:54","slug":"optimal-ventilation-correct-heating-how-frost-monitors-keep-the-climate-in-the-greenhouse-stable","status":"publish","type":"post","link":"https:\/\/sunelements.de\/en\/2026\/03\/04\/optimal-ventilation-correct-heating-how-frost-monitors-keep-the-climate-in-the-greenhouse-stable\/","title":{"rendered":"Optimal ventilation, correct heating: How frost monitors keep the climate in the greenhouse stable"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"18896\" class=\"elementor elementor-18896 elementor-18866\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6d39693f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6d39693f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3b1d0178\" data-id=\"3b1d0178\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d202aab elementor-widget elementor-widget-spacer\" data-id=\"d202aab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e21fcca elementor-widget elementor-widget-theme-post-featured-image elementor-widget-image\" data-id=\"e21fcca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-featured-image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/sunelements.de\/wp-content\/uploads\/2026\/03\/SunElements-Blog-Wie-Frostwaechter-das-Klima-im-Gewaechshaus-stabil-halten-1-1024x683.png\" class=\"attachment-large size-large wp-image-18879\" alt=\"SunElements Blog - Wie Frostw\u00e4chter das Klima im Gew\u00e4chshaus stabil halten\" srcset=\"https:\/\/sunelements.de\/wp-content\/uploads\/2026\/03\/SunElements-Blog-Wie-Frostwaechter-das-Klima-im-Gewaechshaus-stabil-halten-1-1024x683.png 1024w, https:\/\/sunelements.de\/wp-content\/uploads\/2026\/03\/SunElements-Blog-Wie-Frostwaechter-das-Klima-im-Gewaechshaus-stabil-halten-1-300x200.png 300w, https:\/\/sunelements.de\/wp-content\/uploads\/2026\/03\/SunElements-Blog-Wie-Frostwaechter-das-Klima-im-Gewaechshaus-stabil-halten-1-768x512.png 768w, https:\/\/sunelements.de\/wp-content\/uploads\/2026\/03\/SunElements-Blog-Wie-Frostwaechter-das-Klima-im-Gewaechshaus-stabil-halten-1-600x400.png 600w, https:\/\/sunelements.de\/wp-content\/uploads\/2026\/03\/SunElements-Blog-Wie-Frostwaechter-das-Klima-im-Gewaechshaus-stabil-halten-1.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b6706e8 elementor-widget elementor-widget-spacer\" data-id=\"b6706e8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4e68ba1 elementor-widget elementor-widget-heading\" data-id=\"4e68ba1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Combined outdoor solutions with photovoltaics as standard<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e33f80 elementor-widget elementor-widget-text-editor\" data-id=\"7e33f80\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>A greenhouse is not an &#8220;outside with glass&#8221; &#8211; it is a <strong>climate system in its own right<\/strong>. If you only &#8220;heat it somehow&#8221; in winter or &#8220;ventilate it now and then&#8221; in summer, you will reliably get the classics: condensation, mold, weak plants, stress due to temperature jumps. <\/p><p>The clean solution is a <strong>triad of sensor technology, airflow and heating strategy<\/strong> &#8211; supported by automation (window opener) and shading. That&#8217;s what it&#8217;s all about here: practical, easy to understand, immediately implementable &#8211; including accessories that you can retrofit directly with SunElements. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d0a85d2 elementor-widget elementor-widget-heading\" data-id=\"d0a85d2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">1) Sensors: Without measured values, it's all just a gut feeling<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-492a778 elementor-widget elementor-widget-text-editor\" data-id=\"492a778\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>If you only optimize one thing: measure instead of guessing.  <br>You don&#8217;t need high-end IT &#8211; a solid thermo\/hygrometer (or 2 sensors in different places) is enough.<\/p><p><strong>Target values as orientation<\/strong><\/p><ul><li><strong>Humidity:<\/strong> roughly <strong>60-80 %<\/strong> as a sensible range for many greenhouse situations (above this, mold\/fungus pressure increases significantly).<\/li><li><strong>Temperature:<\/strong> strongly plant-dependent &#8211; but the rule remains: <strong>stability beats peak values<\/strong>.<\/li><\/ul><p><strong>Everyday tip<\/strong><\/p><ul><li><strong>Don&#8217;t just<\/strong> measure <strong>in the middle<\/strong>: a sensor <strong>at plant height<\/strong> and one <strong>near the roof\/upper zone<\/strong> will show you whether you have heat build-up or cold spots.<\/li><li>Check in the morning: If windows are dripping \u2192 you have too much moisture + too little air exchange at night.<\/li><\/ul><p><strong>Accessory lever from SunElements (for clean retrofitting)<br><\/strong><a href=\"https:\/\/sunelements.de\/en\/shop\/black-interior-trim\/\">Interior cladding<\/a> helps to route cables and hoses neatly and avoid moisture chaos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-01f8c92 elementor-widget elementor-widget-spacer\" data-id=\"01f8c92\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a7861db elementor-widget elementor-widget-heading\" data-id=\"a7861db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">2) Ventilate properly: Moisture out without shocking the plants<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0952127 elementor-widget elementor-widget-text-editor\" data-id=\"0952127\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Airing is not a ritual, but <strong>moisture management<\/strong>. Your main enemy is not the cold &#8211; it&#8217;s condensation, which triggers fungi and rot. <\/p><p><strong>The rule of thumb<\/strong><\/p><ul><li>Rather <strong>short &amp; efficient<\/strong> (air exchange) than &#8220;a gap&#8221; for hours (cools down, brings little air exchange).<\/li><\/ul><p><strong>When to ventilate?<\/strong><\/p><ul><li><strong>In the morning<\/strong>, when it is drier outside and the temperature rises.<\/li><li><strong>In winter,<\/strong> only ventilate briefly <strong>during frost-free periods<\/strong> &#8211; but do so consistently.<\/li><\/ul><p><strong>What are the real benefits of automation?<\/strong><\/p><ul><li>Automatic window openers often work with a <strong>wax\/gas cylinder<\/strong> that expands when heated and opens the window &#8211; it closes again when it cools down. This is simple, robust and currentless. <\/li><\/ul><p><strong>SunElements accessories that pay directly here<\/strong><\/p><ul><li><strong>Window<\/strong> for targeted ventilation\/cross ventilation (instead of door improvisation).<em> Link to window accessories<\/em><\/li><li>The integrated ventilation flap on the roof provides additional air circulation and helps excess moisture to escape more quickly.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9b53a04 elementor-widget elementor-widget-spacer\" data-id=\"9b53a04\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a8f5467 elementor-widget elementor-widget-heading\" data-id=\"a8f5467\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3) Humidity under control: the 5-minute checklist<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-55e493c elementor-widget elementor-widget-text-editor\" data-id=\"55e493c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>If your humidity is regularly too high, do this sequence:<\/p><ol><li><strong>Switch to watering<\/strong> in the morning instead of the evening (moisture can get out during the day).<\/li><li><strong>Cover the soil:<\/strong> Mulch\/mats reduce evaporation peaks.<\/li><li><strong>Thin out the plants:<\/strong> Air must pass through the leaves.<\/li><li><strong>Ventilate + move air:<\/strong> if necessary, use a small air circulation fan (prevents standing moisture pockets).<\/li><li><strong>Combine heating impulse + ventilation impulse:<\/strong> warm up briefly \u2192 air can hold more water \u2192 then ventilate (moisture really out).<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-84b9c33 elementor-widget elementor-widget-spacer\" data-id=\"84b9c33\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6635f6c elementor-widget elementor-widget-heading\" data-id=\"6635f6c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">4) Frost guard: Not \"warm\", but \"frost-proof\" - that saves money<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bd30d0a elementor-widget elementor-widget-text-editor\" data-id=\"bd30d0a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>A frost monitor is not a living room radiator. Its job is to <strong>maintain a minimum temperature<\/strong>, automated via a thermostat. <\/p><p><strong>Practical setup<\/strong><\/p><ul><li>Frost monitor with thermostat switches on when the temperature falls below the setpoint.<\/li><li>Typical frost protection setpoints are often <strong>5-10 \u00b0C<\/strong> (depending on the plant population).<\/li><\/ul><p><strong>Most important strategy: Zone heating<\/strong><\/p><ul><li><strong>Do not<\/strong> heat <strong>the whole room<\/strong>, but <strong>the plant zone + critical corner<\/strong> (cold falls, corners cool down).<\/li><li>Add <strong>thermal mass<\/strong> (water canister\/stones): buffers temperature fluctuations overnight.<\/li><\/ul><p><strong>Mistake that costs you a harvest<\/strong><\/p><ul><li>&#8220;Continuous heating on the off chance&#8221; \u2192 dries out at certain points, still produces condensation on cold surfaces and eats up electricity.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c0e0212 elementor-widget elementor-widget-spacer\" data-id=\"c0e0212\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aa60927 elementor-widget elementor-widget-heading\" data-id=\"aa60927\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">5) Automatic window opener + intelligent shading<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c87272 elementor-widget elementor-widget-heading\" data-id=\"4c87272\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Summer operation without heat collapse<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c1d7e75 elementor-widget elementor-widget-text-editor\" data-id=\"c1d7e75\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In summer, a greenhouse quickly turns into a sauna. Ventilation alone is often not enough &#8211; you need to reduce the heat input and actively remove the warm air. <\/p><p><strong>The SunElements advantage:<\/strong><br>With SunElements, shading is sometimes included &#8220;free of charge&#8221;:<\/p><ul><li>The <strong>photovoltaic roof reduces the direct solar input<\/strong> without you having to install additional nets.<\/li><li>At the same time, <strong>acrylic glass<\/strong> ensures that <strong>UV components (UVA\/UVB)<\/strong> are <strong>filtered much more effectively<\/strong> than with many conventional glazing systems &#8211; plants and material are therefore better protected against UV stress.<\/li><\/ul><p><strong>Nevertheless:<\/strong><br>Even if UV is reduced, a greenhouse can overheat &#8211; the biggest driver is heat input (solar energy) plus heat build-up. That is why the combination remains crucial: <\/p><ul><li><strong>Automatic window openers<\/strong> for constant air exchange<\/li><li><strong>PV as basic shading<\/strong><\/li><li>optional <strong>additional shading<\/strong> (e.g. <a href=\"https:\/\/sunelements.de\/en\/produkt-kategorie\/accessories\/\"><strong> ceiling<\/strong> or wall pleated blinds<\/a> as internal sun and privacy protection) if your location is extremely sunny or you have sensitive crops <\/li><\/ul><p><strong>Quick tip:<\/strong> If you regularly feel &#8220;stagnant&#8221; warm air inside or have condensation in the morning: <strong>automatic ventilation + cross ventilation<\/strong> is mandatory &#8211; shading is the booster, not the replacement.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0036926 elementor-widget elementor-widget-spacer\" data-id=\"0036926\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b04e648 elementor-widget elementor-widget-heading\" data-id=\"b04e648\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">6) Bonus: Keep winter plants \"stable\" - light is part of the heating strategy<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ff3f84 elementor-widget elementor-widget-text-editor\" data-id=\"2ff3f84\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Many winter problems are actually <strong>light problems<\/strong>: Plants are too warm with too little light \u2192 become soft, susceptible, go to seed.<\/p><p><strong>Business clear tip<\/strong><\/p><ul><li>If you keep frost-free in winter, include light &#8211; otherwise you will be wasting growth potential.<\/li><\/ul><p><strong>SunElements accessories<br><\/strong><a href=\"https:\/\/sunelements.de\/en\/shop\/plant-lamp-led\/\">Plant lamp LED<\/a> (ideal for growing &amp; winter quarters for plants).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ad583a elementor-widget elementor-widget-image\" data-id=\"2ad583a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/sunelements.de\/wp-content\/uploads\/elementor\/thumbs\/SunElements-Blog-Wie-Frostwaechter-das-Klima-im-Gewaechshaus-stabil-halten_Zubehoer-Pflanzenlampe-rk09bohakdxlpe1rbqbegh4uk9z8jm3gma67gf65fk.jpg\" title=\"SunElements-Blog-Wie-Frostwaechter-das-Klima-im-Gewaechshaus-stabil-halten_Zubehoer-Pflanzenlampe\" alt=\"SunElements Blog - Wie Frostw\u00e4chter das Klima im Gew\u00e4chshaus stabil halten - Zubeh\u00f6r Pflanzenlampe\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f867ec elementor-widget elementor-widget-spacer\" data-id=\"2f867ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8467382 elementor-widget elementor-widget-heading\" data-id=\"8467382\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">7) Quick wins: 10 everyday tips that work immediately<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-99f3dab elementor-widget elementor-widget-text-editor\" data-id=\"99f3dab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol><li><strong>2 sensors<\/strong> (top\/bottom) instead of one number.<\/li><li>Ventilate <strong>briefly and vigorously<\/strong>, not in &#8220;split mode&#8221;.<\/li><li><strong>Water in the morning<\/strong>, not in the evening.<\/li><li>Do not press sheets against panes (condensation zone).<\/li><li>Set the frost monitor to <strong>minimum protection<\/strong> (plant-dependent), not to &#8220;cozy&#8221;.<\/li><li>Pure <strong>thermal mass<\/strong>: Water canister as a heat buffer.<\/li><li>In case of high humidity: <strong>heat \u2192 ventilate<\/strong> (in this order).<\/li><li>Automatic window openers: <strong>check the mechanism regularly<\/strong> (smooth-running, correctly adjusted).<\/li><li>Summer: Install <strong>shading before<\/strong> the hot day, not after.<\/li><li>Tidiness with cables\/hoses reduces missing parts &amp; moisture problems (interior cladding).<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-07ea445 elementor-widget elementor-widget-spacer\" data-id=\"07ea445\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aa36a60 elementor-widget elementor-widget-heading\" data-id=\"aa36a60\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQ: Frost monitor, ventilation &amp; heating in the greenhouse<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0e28f22 elementor-widget elementor-widget-text-editor\" data-id=\"0e28f22\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>What is the minimum temperature a greenhouse should be in winter?<\/strong><br>That depends on your plants. For &#8220;frost-free overwintering&#8221;, many aim for <strong>5-10 \u00b0C<\/strong> as a minimum range &#8211; the decisive factor is that the temperature <strong>does not fall below your plant limit at night<\/strong>. <\/p><p><strong>Is a frost monitor alone sufficient against high humidity?<\/strong><br>No. A frost guard increases the air temperature, but <strong>humidity only disappears through air exchange<\/strong>. The combination is effective: <strong>warm up briefly \u2192 then ventilate the room so<\/strong> that the moist air really goes out.  <\/p><p><strong>When should I ventilate in winter without cooling everything down?<\/strong><br>It is best to ventilate <strong>briefly and specifically<\/strong> <strong>during milder, dry periods of the day<\/strong> (often in the morning). Keeping the windows permanently &#8220;on tilt&#8221; brings little air exchange, but cools things down unnecessarily. <\/p><p><strong>How does an automatic window opener work? Does it need electricity? <\/strong><br>Many models work without electricity via a <strong>wax\/thermal cylinder<\/strong>: when warm, it expands and opens; when cold, it contracts and closes again.<\/p><p><strong>What humidity level is &#8220;okay&#8221; in the greenhouse?<\/strong><br>A rough guide is often <strong>60-80 %<\/strong>. If you regularly go well above this (and have condensation on the panes), the risk of fungal diseases increases &#8211; you then need to optimize ventilation, watering times and air movement. <\/p><p><strong>Which is better: heating at night or heating in the morning?<\/strong><br>If there is a risk of frost, you must <strong>ensure a minimum temperature at night<\/strong>. A <strong>short heating impulse<\/strong> in the morning is practical against moisture, because you can then <strong>ventilate<\/strong> &#8211; this removes water from the system instead of just &#8220;keeping it warm&#8221;. <\/p><p><strong>How do I prevent condensation on the windows?<\/strong><br>Condensation occurs when warm, moist air meets cold surfaces. Levers: <strong>better air exchange<\/strong>, <strong>less evaporation<\/strong> (watering in the morning, covering the ground), <strong>thinning out plants<\/strong> and <strong>moving air<\/strong> (air circulation). <\/p><p><strong>Do I need additional shading in summer if I have automatic window openers?<\/strong><br>Often yes. Ventilation lowers the temperature, but the greenhouse can still overheat if there is a lot of sunlight. <strong>Shading reduces the energy input<\/strong> and significantly stabilizes the climate. Photovoltaics on the roof of the greenhouse help here as basic shading. In greenhouses without photovoltaics, ceiling pleated blinds can help and wall pleated blinds can provide additional shading in sun-exposed locations.   <strong><br><\/strong><\/p><p><strong>Which SunElements accessories specifically help with climate stability?<br><\/strong>If you want to professionalize the greenhouse climate, think in modules or add the desired modules to your greenhouse at the time of purchase:<\/p><ul><li><strong>Air flow:<\/strong> window + (optional) automatic opener<\/li><li><strong>Sun protection:<\/strong> ceiling\/wall pleated blinds or shading<\/li><li><strong>Stability in winter:<\/strong> Frost monitor + plant lamp if necessary<\/li><li><strong>Clean retrofit:<\/strong> interior trim (cables\/hoses)<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4141c21 elementor-widget elementor-widget-spacer\" data-id=\"4141c21\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-efa7e7b elementor-widget elementor-widget-button\" data-id=\"efa7e7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/sunelements.de\/en\/produkt-kategorie\/accessories\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">View accessories in store<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c3aa1df elementor-widget elementor-widget-button\" data-id=\"c3aa1df\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/sunelements.de\/en\/downloads-2\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">To the quick inquiry<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2d938c8 elementor-widget elementor-widget-spacer\" data-id=\"2d938c8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Combined outdoor solutions with photovoltaics as standard A greenhouse is not an &#8220;outside with glass&#8221; &#8211; it is a climate system in its own right. If you only &#8220;heat it somehow&#8221; in winter or &#8220;ventilate it now and then&#8221; in summer, you will reliably get the classics: condensation, mold, weak plants, stress due to temperature [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":18879,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[121],"tags":[],"class_list":["post-18896","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/sunelements.de\/en\/wp-json\/wp\/v2\/posts\/18896","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sunelements.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sunelements.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sunelements.de\/en\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/sunelements.de\/en\/wp-json\/wp\/v2\/comments?post=18896"}],"version-history":[{"count":0,"href":"https:\/\/sunelements.de\/en\/wp-json\/wp\/v2\/posts\/18896\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sunelements.de\/en\/wp-json\/wp\/v2\/media\/18879"}],"wp:attachment":[{"href":"https:\/\/sunelements.de\/en\/wp-json\/wp\/v2\/media?parent=18896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sunelements.de\/en\/wp-json\/wp\/v2\/categories?post=18896"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sunelements.de\/en\/wp-json\/wp\/v2\/tags?post=18896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}