Ltpgtthe dimplex coldwatcher multi purpose heater model mph1000 has an output of 1000 watts controlled by a variable thermostat with a minimum setting suitable for frost protection they are specially designed for situations where localized heating is needed or where a small heater is only necessary for general heating or frost protectionltbr gtthe coldwatchers are versatile and robust units ideal for greenhouses lofts garages utility rooms sheds chalets spare rooms conservato