Whether you want to reduce the greenhouse gases your home produces or lower the cost of your utilities, a heat pump might seem like a good idea. Here are some important factors to consider before you make a purchase. ITS A HEATER AND AN AIR CONDITIONER The most commonly installed are air-source heat pumps, which resemble air conditioner units that sit outside your house. During winter, a liquid refrigerant in a copper coil extracts heat from the atmosphere as warm air ...
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