Why are heat pumps more efficient than baseboard heating?
If electric baseboard heating is "100% efficient" (converting every watt of electricity into heat), how can heat pumps be better?
The answer is simple: Heat pumps are more than 100% efficient.
The Tanker Truck Analogy
Imagine a tanker truck carrying 10,000 gallons of gasoline. It might only get 5 miles per gallon—horrendous "efficiency" for the truck itself. But it is carrying a massive amount of energy to the destination.
Heat pumps work the same way. They use a small amount of electricity (say, 1,000 watts) to carry 3,000 or 4,000 watts of free heat from the outside into your home. This gives them an "efficiency" (known as HSPF) that is 3 to 4 times higher than baseboard heat.
Finding Heat in the Cold
How can a heat pump find "heat" if it's 15°F outside? It's all relative. To a super-cold refrigeration coil, even 15°F air contains usable thermal energy. The unit absorbs that energy and then "concentrates" it via compression to warm your home.
Targeted Zone Heating
While baseboard heat allows you to heat only the room you are in (which is good), modern variable-refrigerant (VRF) mini-splits do the same thing—but with 300% more efficiency.
By targeting your heat only where you need it, and using the physics of heat transfer instead of simple resistance, VRF heat pumps are the undisputed way of the future for saving money and the environment.