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How Do I Know If I Have a Heat Pump at Home?

July 23, 2026

Heat pump services often start with simple questions from homeowners who are not completely sure what type of system they have. A heat pump can look almost identical to a standard AC system from the outside, which causes confusion in a lot of Central Illinois homes.

The easiest way to identify one is by checking the thermostat settings, the outdoor unit label, and the way the system operates during colder weather. This guide walks through a few quick ways to tell if your home uses a heat pump and when it makes sense to have the system inspected professionally.

Tiger Plumbing has served Central Illinois since 1993 with licensed HVAC technicians, plumbers, and electricians who help homeowners keep heating and cooling systems operating safely year-round.

Check The Thermostat

The thermostat gives one of the clearest signs that a home uses a heat pump.

Look for settings like:

  • Emergency Heat
  • Auxiliary Heat
  • EM Heat

A standard furnace system usually shows simpler modes like:

  • Heat
  • Cool
  • Fan
  • Off

If the thermostat includes emergency heat settings, there is a strong chance the home uses a heat pump system with backup heating.

If you are unsure what system you have, take a photo of the thermostat screen before calling for heat pump services in Springfield during winter heating problems.

Look At the Outdoor Unit Label

Most outdoor units include a manufacturer label or model number plate attached to the side of the equipment.

In some cases, the label directly says:

  • Heat pump
  • HP
  • Heating and cooling system

If the wording is unclear, search the model number online. Most manufacturers list system type information on their websites.

A lot of homeowners assume every outdoor AC unit works the same way, but a heat pump handles both heating and cooling from the same outdoor system.

Find The Reversing Valve

A reversing valve is one of the main components that separates a heat pump from a standard air conditioner.

This valve allows the system to switch between:

  • Cooling mode
  • Heating mode

The valve usually sits near the outdoor units refrigerant lines.

If you are not comfortable opening the panel or inspecting HVAC components directly, a technician can confirm the system type quickly during a service visit.

Notice How the System Runs in Winter

A heat pump continues running outside during cold weather because it pulls heat from outdoor air and transfers it into the home.

That surprises a lot of homeowners who expect the outdoor system to stay off during winter.

You may also notice:

  • Steam during defrost cycles
  • The outdoor fan running in cold weather
  • Short temporary cooling cycles during defrost mode

Homes around Bloomington and neighborhoods near Constitution Trail often rely on heat pumps during milder winter stretches before backup heat takes over during colder temperatures.

Dual Fuel Systems

Some homes use a dual fuel setup that combines a heat pump with a furnace backup system.

That setup creates confusion because the home may use:

  • A heat pump during moderate weather
  • A furnace during colder temperatures

The thermostat and outdoor equipment may show signs of both systems depending on the temperature and fuel source.

This is one reason homeowners comparing a heat pump vs AC setup sometimes struggle to identify what equipment they have installed.

Why It Matters – Differences between Heat Pump vs. HVAC

Knowing what system is installed helps with:

  • Maintenance scheduling
  • Thermostat settings
  • Repair decisions
  • System troubleshooting
  • Replacement planning

Correct identification also helps technicians diagnose heating problems faster during service calls.

For example, a home using a heat pump may switch into emergency heat during extremely cold weather or when the outdoor system stops operating correctly.

That is different from a traditional furnace setup, where heating and cooling equipment work separately.

Homes near Laura Bradley Park and older neighborhoods around East Peoria often have mixed heating setups from different installation periods. That is one reason homeowners start researching heat pump installation in Peoria before replacing aging equipment.

When To Call a Professional Plumber

If the thermostat settings, outdoor unit label, and winter operation still do not make the system type clear, a technician can identify it quickly.

Tiger Plumbing provides HVAC service Illinois homeowners can call for system inspections, repairs, maintenance, and heat pump installation.

If the system stops heating during freezing temperatures, emergency HVAC service may also be necessary to restore safe indoor temperatures before pipes or equipment become vulnerable to cold weather damage.

A technician can also confirm if the home uses:

  • A heat pump
  • A traditional furnace
  • A dual fuel setup
  • A standard AC unit with separate heating equipment

Contact us today to schedule service with Tiger Plumbing. You can review our service areas or ask about the Membership program for ongoing heating and cooling maintenance.

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FAQ

Frequently Asked Questions

Check the thermostat for emergency heat settings, inspect the outdoor unit label, and watch how the system operates during winter weather.

Yes. A heat pump continues operating outside during winter because it pulls heat from outdoor air.

Emergency heat is a backup heating mode used when the heat pump cannot keep up or needs service.

Yes. Some homes use dual fuel systems that combine a heat pump with a furnace backup system.

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