Our office will be closed Monday April 20th in recognition of Patriots' Day.
Effective March 1st:
Efficiency Maine now offering an additional $500 in heat pump rebates! Call our office for more information.
Which Heat Pump Brand Should You go With?
We know there’s a lot to consider when choosing a heat pump — from system types to rebates and efficiency ratings. With so much information out there, it can be tough to sort through it all. That’s why we’ve put together the key facts, data, and insights in one place — to help you make a confident, informed decision that’s right for your home or business.
Things to Look out for
SEER2 and HSPF2
HSPF2 and SEER2 are the updated efficiency ratings for heat pumps, introduced in 2023 to better reflect real-world performance. HSPF2 measures heating efficiency (up to 14.6), while SEER2 measures cooling efficiency (up to 42, though heat pumps max out around 34). In both cases, the higher the number, the more efficient the system—so units closer to the top of these scales offer the best performance and lowest energy costs.
Breaker Size
Breaker size can tell you a lot about how much electricity a heat pump uses. In general, the higher the breaker size, the more energy the unit is likely to consume. For example, if a smaller unit like a 9,000 BTU heat pump requires a 20-amp breaker, it could be less efficient than other models of the same size that run on a lower amperage. Paying attention to breaker size is one more way to spot which systems are truly energy-efficient.
BTU's in Cold Weather
In Maine’s long, cold winters, it’s essential to choose a wall-mounted mini-split heat pump that can maintain strong BTU output even in freezing temperatures. Many units lose efficiency as temps drop, but cold-climate models are built to deliver reliable heat—even at -5°F or lower. This means better comfort, fewer backup heating needs, and lower energy costs all winter long.
Brass Tacks
We know choosing the right heat pump can feel overwhelming with so many brands out there. That’s why we’ve gathered performance and efficiency data from the manufacturers and distributors of four of the biggest names in the industry: Fujitsu, Mitsubishi, Daikin, and Samsung.
Let’s take a look at what the numbers say. The results might just surprise you.

