Question 1

Do heat pumps work in cold weather?

Accepted Answer

Modern heat pumps are effective down to around 25-30°F. For extremely cold days, we often recommend a dual-fuel system that pairs a heat pump with a gas furnace backup.

Question 2

What is a ductless mini-split?

Accepted Answer

A ductless mini-split is a compact heat pump system that doesn't require ductwork. It's perfect for additions, older homes, or rooms that need supplemental heating and cooling.

Question 3

How much can I save with a heat pump?

Accepted Answer

Heat pumps can reduce heating costs by 30-50% compared to electric resistance heating. You may also qualify for federal tax credits and local utility rebates.

Question 4

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

Accepted Answer

The most common causes are a stuck reversing valve, low refrigerant charge, or a faulty defrost control board. In Asheville's mountain climate, it's also possible that outdoor temperatures have dropped below your heat pump's effective range and the system is struggling to extract heat — a dual fuel backup solves this. Call us for a diagnostic before the problem worsens and damages your compressor.

Question 5

Why is my heat pump only heating some rooms?

Accepted Answer

Uneven heating usually points to ductwork problems — disconnected flex runs, crushed ducts in the crawlspace, or leaky boot connections are extremely common in Asheville-area homes built on sloped lots. It can also indicate a system that's undersized for the square footage or a blower motor that's losing speed. We perform a static pressure test and room-by-room temperature survey to pinpoint the cause.

Question 6

Why is my heat pump not cooling my house?

Accepted Answer

The top causes are low refrigerant (usually from a leak), a dirty outdoor condenser coil, a failed compressor, or a stuck reversing valve that's keeping the system in heat mode. In our mountain summers, even a 10% loss of refrigerant charge can reduce cooling capacity by 20% or more. We'll check pressures, airflow, and electrical components to find the root cause.

Question 7

How does a heat pump defrost cycle work?

Accepted Answer

The defrost board monitors outdoor coil temperature and run time; when frost accumulates, it temporarily switches the reversing valve to cooling mode and sends hot refrigerant through the outdoor coil to melt the ice. You'll hear the reversing valve click, the outdoor fan will stop, and the auxiliary heat strips kick on indoors so you don't feel cold air. The whole cycle should take 2–10 minutes — if it runs longer or never initiates, the defrost controls need service.

Question 8

Why does my heat pump run all the time and never shut off?

Accepted Answer

Heat pumps are designed to run in longer cycles than furnaces, so moderate run times are normal — especially when it's below 40°F outside. But if it truly never stops and your home isn't reaching the set temperature, common causes include low refrigerant, a dirty coil, an undersized system, or significant air leaks in your ductwork or building envelope. In WNC's older homes, we often find that adding attic insulation or sealing crawlspace ducts solves the problem without any equipment changes.

Question 9

Is it normal for a heat pump to run constantly in winter?

Accepted Answer

In Western North Carolina, when temperatures dip into the 20s and 30s, it's very common for a properly sized heat pump to run nearly continuously — that's how they're designed to work. The concern is when it runs constantly but never satisfies the thermostat or when auxiliary heat stays on for hours. If your home stays comfortable and your power bills are reasonable, the long run times are actually more efficient than short cycling.

Question 10

Why is my heat pump making a loud buzzing or humming noise?

Accepted Answer

A loud buzz from the outdoor unit usually indicates a failing contactor (the relay that sends power to the compressor), loose electrical connections, or a compressor that's struggling to start due to a bad run capacitor. A hum from the indoor unit could be a transformer issue or a blower motor going bad. Either way, electrical buzzing should be checked promptly — it can indicate components overheating.

Heat Pump Repair & Installation

Professional Heat Pump Repair & Installation in Asheville & Western NC

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Frequently Asked Questions About Heat Pump Repair & Installation

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