{"product_id":"gas-ac1-fan-controller","title":"G.A.S AC1 Fan Controller – Thermostatic Fan Speed Controller","description":"\u003ch2\u003eAutomatic fan speed control for AC extractor fans\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eG.A.S AC1 Fan Controller\u003c\/strong\u003e is a plug-in \u003cstrong\u003ethermostatic fan speed controller\u003c\/strong\u003e for AC inline and extractor fans. Plug it into the mains, plug your fan into its socket and set two dials: a \u003cstrong\u003eminimum fan speed\u003c\/strong\u003e and the \u003cstrong\u003etemperature\u003c\/strong\u003e you want in the room. Below that temperature the fan ticks over at your minimum speed; as the room warms past the set point the AC1 ramps the fan up, reaching full speed \u003cstrong\u003e2°C above\u003c\/strong\u003e your setting.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostatic or manual\u003c\/strong\u003e – unplug the sensor and it runs as a simple speed controller at your minimum setting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 5 A\u003c\/strong\u003e of AC fan load – one fan or more.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug and play\u003c\/strong\u003e – UK socket on the front, temperature sensor on a \u003cstrong\u003e2 m\u003c\/strong\u003e cable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate sensing\u003c\/strong\u003e – digital sensor reads to \u003cstrong\u003e±0.5°C\u003c\/strong\u003e across a \u003cstrong\u003e20-30°C\u003c\/strong\u003e range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverload protection\u003c\/strong\u003e – if the controller overheats it switches the fan to full speed to protect your equipment, then returns to normal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature LED\u003c\/strong\u003e shows when the room is above the set point.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHeat spikes and noisy fans\u003c\/h3\u003e\u003cp\u003eAn extractor fan running flat out all day is loud, wears faster and can pull a grow tent too cold at night, while a fan set low can't cope when the lights heat the room. Matching extraction to \u003cstrong\u003etemperature\u003c\/strong\u003e keeps the climate steady, holds \u003cstrong\u003eairflow\u003c\/strong\u003e and \u003cstrong\u003ehumidity\u003c\/strong\u003e in check, and keeps the fan quiet whenever it can be.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug the AC1 into the mains\u003c\/strong\u003e and your AC fan into the AC1's socket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlace the sensor\u003c\/strong\u003e in the middle of the room or tent.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet the temperature\u003c\/strong\u003e you want; the fan reaches full speed 2°C above it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet the minimum speed\u003c\/strong\u003e – if the fan motor hums, turn the minimum up until it stops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual mode:\u003c\/strong\u003e unplug the sensor and use the minimum-speed dial as a speed control.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFan type:\u003c\/strong\u003e AC fans only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum load:\u003c\/strong\u003e 5 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl:\u003c\/strong\u003e thermostatic (sensor fitted) or manual (sensor removed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e 20-30°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor accuracy:\u003c\/strong\u003e ±0.5°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBandwidth:\u003c\/strong\u003e 2°C – full speed at 2°C above set point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor cable:\u003c\/strong\u003e 2 m\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e built-in overload protection (runs fans at full speed to recover)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the box:\u003c\/strong\u003e AC1 controller and temperature sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePacked size:\u003c\/strong\u003e 15 x 11 x 9 cm, 0.37 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cdiv class=\"hcs-faq\"\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWill it work with EC fans?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNo – the AC1 is for AC fans only. EC fans need an EC controller such as the Global Air EC1.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eCan it run more than one fan?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eYes, as long as the total load of the fans stays within 5 amps.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWhy does my fan hum at low speed?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eThe minimum speed is set too low for that motor. Turn the minimum-speed dial up until the hum stops, which also saves wear on the fan.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWhat happens if I unplug the temperature sensor?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eThe AC1 becomes a manual speed controller and runs the fan continuously at the minimum speed you have set.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003ch3\u003eWorks Well With\u003c\/h3\u003e\u003cdiv class=\"hcs-related\" style=\"display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 0;\"\u003e\n\u003ca href=\"\/products\/systemair-rvk-fan\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/1EaxQPdMZJbfGQl3kdMyZmQr4MP7MLehz_s4000.png?v=1787206061\u0026amp;width=160\" alt=\"Systemair RVK Inline Duct Fan\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eSystemair RVK Inline Duct Fan\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eAC inline fan it can control\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/systemair-revolution-stratos-ac-fan\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/1g1etjs46mJwc_YoFthddY8arCszb8LUQ_s4000.png?v=1787206057\u0026amp;width=160\" alt=\"Revolution AC Stratos Inline Extractor Fan\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eRevolution AC Stratos Inline Extractor Fan\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eAC extractor fan for larger rooms\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e","brand":"G.A.S","offers":[{"title":"Default Title","offer_id":53931143463178,"sku":"ENV-GASX-063-01","price":59.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/gas-ac1-fan-controller-default-title-1.jpg?v=1792302622","url":"https:\/\/hydrocropshop.co.uk\/products\/gas-ac1-fan-controller","provider":"Hydro Crop Shop","version":"1.0","type":"link"}