The Solarventi SV3 is the smallest model and is delivered complete with accessories for mounting on a wall. The amount of hot air from the small models, does not exceed levels for temperature and m3 that makes thermostat/regulator unit necessary. Solarventi air collector for de-humidification and heated ventilation . Dust mite free air. Clean fresh filtered air for breathing and a healthy environment. Reduce the effects of bacteria, toxins and volatile organic chemicals. That is why SV3 are delivered only with on/off switch. This is small but sweet for worksheds, small rooms, boats etc.
The panel filter is maintenance free.