Ten to fifteen years is the usual range. In the Hill Country the honest answer skews toward the lower end, because a heat pump here runs year-round rather than seasonally — and that doubles the wear compared to a furnace-and-air-conditioner pair.

Why Heat Pumps Wear Faster Than Furnaces

A conventional setup splits the work. The air conditioner runs seven months and sits idle for five; the furnace runs a few months and sits idle the rest.

A heat pump is the same equipment doing both jobs. The compressor that cools your house all summer is the compressor that heats it in January. There is no off season.

That is not a reason to avoid one — the efficiency in this climate is genuinely good — but it does mean maintenance matters more, not less. Skipping service on a heat pump costs you more than skipping it on an air conditioner.

What Fails First

The compressor is the expensive one and usually determines the system’s life. It fails from running low on refrigerant, from liquid returning to it after a coil freeze, or simply from accumulated hours.

The reversing valve is unique to heat pumps. It switches the refrigerant flow between heating and cooling, and when it sticks the system will do one job but not the other. A heat pump that cools fine but blows cool air in winter is often a reversing valve.

The defrost control manages the cycle that clears frost from the outdoor coil in cold weather. When it fails, the coil ices over and heating capacity collapses.

Capacitors and contactors are routine wear items, inexpensive, and the most common cause of a heat pump that hums but will not start.

What Shortens Life Most

Refrigerant leaks are the leading cause of premature compressor failure. Refrigerant is not consumed — a system that is low has a leak, and running low means the compressor operates hot and inadequately lubricated.

Topping off a charge without finding the leak is not a repair. It is a delay, and it is a delay the compressor pays for.

Restricted airflow is the second. A clogged air filter or a dirty coil causes the evaporator to freeze in cooling mode, which floods the compressor with liquid refrigerant.

Undersized or leaking ductwork is the third. Heat pumps generally move more air than the equipment they replace, and a duct system that cannot deliver it makes the equipment work against itself for its entire life. Duct sealing genuinely extends equipment life.

Auxiliary Heat Deserves a Check

A detail that costs money without shortening equipment life: if the control system engages electric backup heat when the heat pump could have handled the load, your winter bills climb sharply while nothing appears wrong.

Correct thermostat configuration and staging prevents it, and it is worth verifying during service rather than assuming it was set correctly at installation.

What Extends It

Twice-yearly service, not annual. A heat pump needs the cooling checks in spring and the heating checks in fall, plus the reversing valve and defrost cycle verified — items a cooling-only checklist skips entirely.

Keep the outdoor unit clear of vegetation and debris, and make sure it is not sitting where water pools around it. Change filters on a real schedule rather than the package interval.

Signs It Is Nearing the End

Rising bills with no change in habits. Longer run times. A system that struggles on days it used to handle. Repairs arriving in sequence on different components. Ice on the outdoor unit that does not clear.

On a unit past twelve years using obsolete refrigerant, a significant repair usually warrants a replacement conversation rather than a repair.

Staying Ahead of It

Both seasonal visits are covered under our Care Club maintenance plan, which is the practical way to keep a year-round system on schedule.

We serve Fredericksburg, Kerrville, Boerne, Comfort, and the surrounding Hill Country. Contact 72 Degrees or call (830) 468-5316.