Flagship guide

Heat Pumps

A heat pump doesn't make heat — it moves it, from a cold side to a warm side. That's the whole trick, and it's why one appliance can heat your home in winter, cool it in summer, and heat your water year-round for a fraction of the running cost of gas or resistive electric.

Outdoor heat pump unit mounted on a brick wall
How it works

A refrigerant cycle absorbs heat from outside air (even cold air) and releases it inside — or the reverse in summer. It's the same physics as your fridge, run in either direction.

Why it's efficient

Instead of generating heat from electricity 1-for-1 like a resistive heater, a heat pump moves 3–5 units of heat energy for every 1 unit of electricity it consumes.

Where it fits

Ducted or split-system heating/cooling, and hot-water heat pumps that replace a gas or electric-resistance hot water system — often the single best electrification upgrade for a home.

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