Skip navigation

We are hiring. Training available. Great benefits. Apply Now

Serving the Greater Lansing & Grand Rapids Areas


A-1 Mechanical Blog

Why Is My Heat Pump Not Heating?

Heat Pump

Is your heat pump not blowing hot air? This frustrating problem is common with heat pump owners, but it doesn’t always mean your system is damaged. Check out these common reasons that heat pumps may not produce hot air constantly and when to consult with a professional at A-1 Mechanical.

Common Reasons For Heat Pump Not Blowing Hot Air

If you notice that the heat coming out of your vents isn’t as warm as you would like it to be, go through this list before you worry. However, remember, any time you find your heat pump not blowing hot air, call a Lansing, MI heating repair contractor to have them troubleshoot the issue for you.

Air May Be Warm, But Not Feel Like It

When your heat pump produces warm air, the air blowing out of your vents will be somewhere in the 85 to 92°F range. However, this temperature pales in comparison with the air emanating from a gas furnace, which is typically between 130 to 140°F. If you are new to a heat pump system, keep in mind that the air coming from your vents will not feel as warm as the air stemming from a gas furnace, but heat pumps will warm your home to the desired temperature — if you give it time.

Heat Pump System Could Be In “Defrost” Mode

When the weather outdoors drops, condensation and frost accumulate on the outdoor components of your heat pump. To keep your system operational, it triggers a “defrost mode,” which runs every 30, 60 or 90 minutes, depending on the model of heat pump you have. When defrost mode runs, the air coming from your vents will feel cool. However, when defrost mode ends, the system will return to providing warm air.

Your Heat Pump Could Have A Refrigerant Leak

Your heat pump uses refrigerant to transfer any warmth from the air outside into your home. Unfortunately, if there is a leak in your line somewhere, it could inhibit your heat pump’s ability to provide this service, creating cold air from your vents.

Frozen Outdoor Components on Your Heat Pump

Occasionally, refrigerant leaks cause outdoor components to freeze, even after several defrost cycles. If this is the case, your heat pump system needs to be professionally addressed. You may see frost or ice buildup on your outdoor heat pump unit that does not seem to melt. The system is unable to work and blow hot air in this case.

Damaged Reversing Valve

Heat pumps are special because they heat your home during the winter and provide air conditioning to your home during summer. This process changes with the help of a reversing valve, which switches the direction of the refrigerant. However, if your reversing valve is damaged, your system may be stuck in air conditioning mode.

When Should You Call For A Heat Pump Repair?

It’s always a good idea to keep your fingers on the pulse of your HVAC system. Here at A-1 Mechanical, we recommend calling whenever you see there is an ongoing problem, or if there are new changes to your heat pump system that are creating heating and cooling problems.

Problems? A-1 Mechanical is Here to Help

Our team has been helping residents throughout the greater Lansing and Grand Rapids area since 1983s, and we are committed to taking care of the job the right way the first time. We offer residential and commercial heating and cooling service, helping people to stay safe and comfortable. For heat pump repair, schedule heating service today.

Comments are closed.