Question 1

Why is my heat pump blowing cold air in heating mode?

Accepted Answer

The most common causes are low refrigerant charge, a failed reversing valve, or the system running in defrost mode (which temporarily blows cool air and is normal). If cold air persists for more than 10–15 minutes, call for service.

Question 2

Is ice on my heat pump outdoor unit normal?

Accepted Answer

Light frost during heating mode is normal, the defrost cycle should clear it periodically. Heavy ice buildup that doesn't clear indicates a problem with the defrost control, a refrigerant leak, or restricted airflow. Turn the system to emergency heat and call for service.

Question 3

How long do heat pumps last?

Accepted Answer

Heat pumps typically last 12–17 years in the NC Piedmont. Because they run year-round (unlike AC-only or furnace-only systems), they accumulate more wear. Regular maintenance is the biggest factor in maximizing lifespan.

Question 4

What's the difference between a heat pump and central AC?

Accepted Answer

A heat pump is essentially a central AC that can run in reverse. In summer it cools your home; in winter it reverses the refrigerant flow to extract heat from outdoor air and bring it inside. This makes it more efficient than electric resistance heating.