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Blog

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

Published on March 28, 2016

Although heat is in the name, you can use a heat pump for AC. It works by transferring heat instead of generating it (the way a furnace does) which is why it is used as a heating and cooling appliance. It's true that heat pumps can be very efficient, although most air conditioners are roughly equivalent in terms of their efficiency. Just compare these two high quality 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 ACs, and the bigger the number, the more efficient it is. The difference between 23.5 and 26 is not great however, and the efficiency differs depending on the model. On the other hand, HSPF is another scale that stands for "heating seasonal performance factor" and is unique to heat pumps. It tells you how efficient the equipment is at heating. You can tell from these examples when comparing efficiency ratings, air conditioners are about equal, if not superior depending on the system you choose. The largest difference between the two 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 most effective in warm climates with less severe winters, save for some integrated systems that use heat pumps as a backup, such as with a geothermal system. We encourage you to consult with a NATE certified HVAC pro who has experience in your city before settling on a heat pump. If the equipment just isn't right for your climate, you could have unnecessarily 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 reach the temperature set by your thermostat. This means you could unknowingly begin 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 stack up against a furnace?


A furnace is a more powerful heating system and is critical for certain cooler climates. That’s because a heat pump has trouble when the temperatures hit about 40 degrees Fahrenheit (4.4 degrees Celsius. As unusual as it sounds, during heating season, a heat pump is intended to remove heat from the outside air and use it to warm the inside air. Although it may be too cool outside for comfort, there is still an adequate amount of heat for the heat pump to work properly, but at exceptionally low temperatures there is not enough heat available outside to heat the air inside to high enough temperatures needed to keep warm. So while a heat pump may work perfectly during the heating season for someone in Daytona Beach, someone living in upstate New York with a heat pump would probably also need a furnace for the more extreme temperatures. If you don’t have a furnace that kicks in when the freezing temperatures hit, the heat pump can run for hours trying to keep your home warm enough.

How to achieve maximum efficiency with your heat pump


In many areas, heat pumps can be used with geothermal systems, and the heating source is better for the environment because it is not burning fossil fuels and, instead, uses the Earth’s native temperature to heat and cool. This is a fantastic alternative for certain northern areas, but extra land must be available in order to install the correct piping for a geothermal system.

When it comes to home comfort, you probably didn’t need anything else to think about; but, remember, it’s important to examine the pros and cons of each heating and cooling system so you don’t end up installing a system that shuts down when extreme temperatures hit, or investing in additional systems when one would suffice.

If you can’t decide which system would best fit your needs, call Service Experts Heating & Air Conditioning to schedule a complimentary in-home quote. We are available to answer any and all of your questions to ensure you make the right choice for your home.
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