Heoss hot air blower, from Systel International, made of stainless steel is mounted on the wall of the passage such as outside a series of rooms, to provide a source of warmth in the ventilation flow for installations in both maternity and rearing facilities. Only the sleeve of the heater is attached to the wall, so the main part is portable for moving to another location as required. Power can be increased progressively from 1.4kw to 10kw and there is also the option of an on-off system. Temperature regulation is either manual or through a climate controller. The heater runs on electricity or high-pressure propane gas. The burner and the blower are easy to clean.