Heat Pump vs. Air Conditioner: Which One is Right for Cooling Your Home

March 28, 2016

Although heat is in the name, you can use a heat pump for cooling. It works by transferring heat instead of creating it (unlike furnaces) which is why it can be used as a heating and cooling system. It's true that heat pumps can be very efficient, although most air conditioners are similar in terms of energy efficiency. Just examine these two top of the line systems from Lennox.

XC25 air conditioner from Lennox

XC25 Air Conditioner
up to 26 SEER
ENERGY STAR® Qualified

XP25 Heat pump from Lennox

XP25 Heat Pump
up to 23.5 SEER
up to 10.2 HSPF
ENERGY STAR® Qualified



What is SEER and HSPF?


SEER is an efficiency rating for air conditioning systems, and the larger the number, the more efficient it is. The difference between 23.5 and 26 is not great though, and the efficiency changes depending on the model. On the other hand, HSPF is a different standard that stands for "heating seasonal performance factor" and is specially for heat pumps. It tells you how efficient the equipment is at heating. Notice from these examples by looking at the SEER rating, air conditioners are almost equal, if not superior depending on the model you choose. The greatest difference between heat pumps and ACs is that heat pumps can also heat your home while an AC can't.

Updated minimum SEER guidelines for 2018 for air conditioning units and heat pumps
Updated minimum SEER guidelines for 2018 for air conditioning units and heat pumps


Does climate matter for heat pumps?


Heat pumps are more effective in hotter climates with less severe winters, save for some integrated systems that use heat pumps as a backup, such as with a geothermal system. You should speak with a NATE certified HVAC technician who has experience in your area before settling on a heat pump. If the equipment just isn't right for your climate, you could have extremely high electric bills. Once the temperature gets too low, it's much harder for the heat pump to draw heat out of the air and it may never warm your home to the temperature you set. This means you might end up running your heat pump non-stop or switching on emergency heat 24/7 during winter which drives your energy consumption up.

How does a heat pump compare with a furnace?


A furnace is a more robust heating system and is necessary for certain colder climates. That’s because a heat pump has issues when the weather hits about 40 degrees Fahrenheit (4.4 degrees Celsius. As odd as it sounds, during cooler temperatures, a heat pump is designed to remove heat from the air outside and use it to heat the inside air. Just because the air outside feels cold, there is still a sufficient amount of heat for the heat pump to operate correctly, but at exceptionally low temperatures there is not ample heat available outside to warm the inside air to higher temperatures needed to stay warm. So while a heat pump may be great during the winter months for someone in Orlando, someone living in upstate New York with a heat pump may also need a furnace for the more extreme temperatures. If freezing temperatures hit and you don’t have a furnace to take over, a heat pump could run for hours trying to keep your home warm enough.

How to achieve maximum efficiency with your heat pump


In certain areas, heat pumps can function with geothermal systems, and the heating source is better for the environment since it is not burning fossil fuels and, instead, uses the Earth’s natural temperature to heat and cool. This is a great alternative for particular northern areas, but more land must be available in order to install the necessary piping for a geothermal system.

Just what you needed – one more thing to think about when it comes to your home comfort; but, remember, it’s important to understand the pros and cons of each heating and cooling system so you don’t end up buying a system that doesn’t work when extreme temperatures hit, or investing in two systems when one would suffice.

If you’re not sure which system would work best for you, call Bryant Heating & Cooling Service Experts to schedule a complimentary in-home quote. We are here to answer any and all of your questions to help you choose the right option for your home.
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