When getting a quote on your heat pump from your heat pump installer anywhere in NL , you need to ask many questions for us the most important is what is the COP at cold temperatures . “COP” is the co-efficient of performance , the most important measure of efficiency , simply put how much electricity the heat pump uses to operate ,to put it in perspective an electric heater will use 1 unit of electricity to supply 1 unit of heat , an LG 12000 BTU Prestige heat pump at -8 degree Celsius ( ambient temperature) is 4.63 , 1 unit of electricity to produce 4.63 units of heat , that’s 4.6 times more efficient that electric heaters , most heat pump installers talk about HSPF , heating seasonal performance factor is taken at 8 degree Celsius when there is little demand on heating , ask your heat pump installer what is the exact COP in cold temperatures , LG will publish there COP at different temperatures to let clients know what the efficiency level is , In St johns or anywhere in NL ask your installer this important question which will help you decide on the right heat pump for you.