Not sure whether your HVAC system is a heat pump? Here are four reliable ways to find out:
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Check the Manufacturer’s Label
Your outdoor unit’s label offers the clearest clues. Look for the word “heat pump” printed on the nameplate, or a model number beginning with “HP.” You’ll typically find this label on the side of the unit.
Also, check the yellow EnergyGuide sticker. If it lists both SEER (Seasonal Energy Efficiency Ratio) and HSPF (Heating Seasonal Performance Factor) ratings, that’s a strong indicator you’re dealing with a heat pump. Standard AC units only list SEER ratings.
Still not sure? Snap a photo of the label and send it to an HVAC pro for confirmation.
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Look at the Thermostat Settings
Your thermostat can also offer key insights. If you see an option for “Emergency Heat” or “Aux Heat,” that’s a sign you’ve got a heat pump. These backup heating modes are only found on heat pump systems.
Additional heat pump-specific thermostat features may include:
- Ability to switch between heating and cooling
- An auto-mode that toggles between both based on temperature
- Two-stage heating (primary + auxiliary)
- Programming options like “wake,” “leave,” “return,” and “sleep”
Seeing several of these settings together? You likely have a heat pump.
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Inspect the Outdoor Unit
Take a look at your system’s outdoor component. A few things to check:
- EnergyGuide label with both SEER and HSPF ratings
- A brass reversing valve (typically located near the top of the unit)
- Model number starting with “HP”
Want to be sure? Put your system in heating mode and see if the outdoor unit runs. If it does—even in cold weather—you’ve got a heat pump. Air conditioners don’t operate in heating mode.
Also, review any paperwork left by the previous homeowner. Installation documents or service receipts often clarify whether you have a heat pump.
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Observe Seasonal Operation
Heat pumps work year-round. So if your outdoor unit runs even when it’s cold outside, that’s another clue. Unlike furnaces, which generate heat, heat pumps move heat from the outside in—even when it’s chilly.
Need Help? Call BPM Heating & Cooling Today
At BPM Heating & Cooling, we’ve helped homeowners all over Frederick, MD figure out what type of system they have—and how to get the most out of it.
If you’re unsure whether you have a heat pump or just want a professional opinion, we’re happy to take a look. We offer full service for heat pumps, furnaces, boilers, and geothermal systems, including repairs, maintenance, and new installations.
📍 Visit us: 300 E 4th St Unit A, Frederick, MD
📞 Call: (240) 200-0887
🌐 Schedule online: bpmhvac.com
We offer free quotes on new systems and service both residential and commercial properties throughout the area. Let us help keep your home comfortable, no matter the season.
