Best Temperature to Set a Heat Pump in Winter: 8 Tips

The best temperature to set a heat pump in winter is the lowest setting you are comfortable with, held steady day and night, usually around 68°F to 70°F. Heat pumps work best with steady settings, not big swings. If you are searching for the best temperature to set heat pump in winter conditions on the North Shore, start there. Here are 8 thermostat tips for running a heat pump through a North Shore winter.

Key Takeaways

• Pick one temperature and leave it. Steady settings keep the heat pump efficient.
• Skip deep setbacks. Big overnight drops can trigger costly backup heat in the morning.
• Use heat mode, not auto. Auto can flip the system into cooling on sunny winter days.
• Never leave emergency heat on. It shuts off the heat pump entirely.

1. Start Around 68°F to 70°F: The Best Temperature to Set Heat Pump in Winter

The U.S. Department of Energy suggests about 68°F while you are awake and home as a good balance of comfort and savings. Many heat pump owners land between 68°F and 70°F.

• Start at 68°F and adjust one degree at a time.
• Give each change a full day before judging it.
• Older homes with drafty rooms may need a degree or two more.

If you cannot hold 68°F on cold nights, your system may be undersized. Our guide on whether heat pumps work in cold weather explains how sizing affects winter comfort.

2. Keep Setbacks Small

A furnace can recover from a 10-degree setback in minutes. A heat pump recovers slowly by design. A big setback often means the backup heat kicks on in the morning to catch up.

• Limit setbacks to about 2°F to 3°F overnight.
• Skip setbacks entirely on very cold nights.
• If you use a schedule, start the morning warm-up early.

Not sure your thermostat is set up for a heat pump? Request a heat pump thermostat check and we will set the schedule and staging for you.

3. Use Heat Mode, Not Auto

Auto mode lets the system switch between heating and cooling. On a sunny February afternoon, a south-facing room can warm up fast. Auto may then start cooling, wasting energy.

• Set the system to Heat for the whole season.
• Switch to Cool in late spring.
• On mini-splits, check every indoor head, since each has its own mode.

4. Leave Emergency Heat Off

Emergency heat shuts off the heat pump and runs only the backup heat. It is meant for when the heat pump is broken.

• Use it only if the outdoor unit is damaged or buried in ice.
• Switch back to normal heat as soon as the unit is fixed.
• If "AUX" shows often on mild days, call for service.

Learn the difference in our guide to heat pump backup heat for cold nights.

5. Set the Fan to Auto

On ducted heat pumps, a fan set to "On" runs all the time. Between heat cycles it can blow air that feels cool. It also uses more electricity.

• Use Auto fan for most homes.
• On mini-splits, auto fan speed lets the unit ramp up and down quietly.
• Use a higher fan speed only for a room that heats unevenly.

6. Watch Where the Temperature Is Measured

Many mini-split heads read the temperature at the indoor unit, high on the wall where warm air collects. The room can feel cooler than the display says.

• Set the head a degree or two higher if the floor level feels cool.
• Consider a remote sensor or wall-mounted controller for better readings.
• Keep furniture and curtains away from the indoor unit's airflow.

7. Expect Steady, Warm Air

A heat pump delivers warm air for long periods instead of hot blasts. Long run times are normal on cold days. Our guide on why a heat pump keeps running explains what is normal and what is not.

• Feel the room, not the vent.
• Expect brief pauses during defrost cycles.
• Per DOE guidance on air-source heat pumps, a heat pump can cut heating electricity use by about 50% compared with electric resistance heat, as long as it does the work instead of the backup.

8. Do Not Go Too Low When Away

For a weekend away, a small drop is fine. For a longer trip, keep the house warm enough to protect pipes.

• Keep it at 55°F or higher when you are away, a common rule of thumb to protect plumbing.
• Do not shut off the heat pump in winter.
• Ask someone to check the outdoor unit after a big snowstorm.

Get Your Heat Pump Settings Right

The best temperature to set heat pump in winter is one comfortable number, held steady, with heat mode on and emergency heat off. Small setbacks are fine. Big swings cost money.

A yearly heat pump tune-up is a good time to check thermostat staging and backup heat settings. For the bigger picture, see our heat pumps in Massachusetts guide. Jose has worked in HVAC since 2015. Book a heat pump settings and comfort check with HomePros, or call (781) 426-8428.