Heat Pump Services We Offer in Georgetown TX
All heat pump repairs, reversing valve, defrost board, auxiliary heat, refrigerant circuit, and electrical components.
Systematic diagnosis of heat pump issues including heating mode failures, cooling failures, and abnormal operation.
Bi-annual heat pump tune-up, coil cleaning, refrigerant check, electrical testing, and defrost system verification.
Performance evaluation and optimization for heat pump systems running inefficiently or failing to reach setpoint.
Balance airflow distribution from heat pump systems for consistent comfort throughout the home.
The reversing valve switches the system between heating and cooling mode. Failure causes it to lock in one mode, we test and replace as needed.
Defrost board failure causes ice accumulation on the outdoor coil, we replace faulty boards and verify defrost cycles.
Prevent ice accumulation in the outdoor unit base pan during Georgetown freeze events.
Elevate the outdoor unit to prevent flooding and ice coverage during rare Georgetown ice storms.
Aux heat strips provide backup heating below the heat pump's efficiency range, we repair auxiliary heat controls and sequencers.
Heat pump stuck in defrost, defrosting too frequently, or not defrosting enough, we calibrate or repair the defrost system.
Same-day emergency heat pump service during Georgetown cold snaps and summer peak cooling periods.
How We Test a Reversing Valve
The reversing valve is a four-way solenoid valve that redirects the direction of refrigerant flow to switch a heat pump between heating and cooling modes. It is one of the few components truly unique to heat pumps rather than shared with standard air conditioners, and when it fails the system typically gets stuck operating in whichever mode it was last successfully in, most often cooling, which means it blows cold air even while the thermostat is calling for heat.
Failure generally happens one of three ways. The valve body itself can develop a scored or worn internal slide from age or from refrigerant contamination, causing it to stick in position mechanically even when properly energized. The small solenoid coil that shifts the valve can fail electrically, so the valve never attempts to shift at all. Or, more subtly, the valve can appear to shift correctly while refrigerant bypasses internally past a worn slide, reducing capacity in one or both modes without ever fully failing to switch.
Diagnosing a suspected reversing valve issue means verifying 24 volt signal actually reaches the solenoid coil when the thermostat calls for a mode change, listening and feeling for the valve's characteristic clunk as it shifts, and measuring line temperatures on both sides of the valve to confirm refrigerant is actually being redirected rather than just the solenoid being energized without a mechanical shift. We also check for cases where low-side pressure differential is too small to move the valve even though it is otherwise functional, since some valves need a minimum pressure difference across them to shift reliably. If replacement is needed, the system must be fully recovered, the new valve brazed into place, then evacuated and recharged to the manufacturer's specification.
Reversing valves in Georgetown see their heaviest cycling stress not during peak summer or peak winter, but during the shoulder seasons in spring and fall, when a mild day calls for cooling in the afternoon and a mild night calls for heat, sometimes multiple times within 24 hours. That pattern of frequent mode switching accelerates mechanical wear on the valve compared to a climate with one clearly dominant season, and it is a factor we take into account when evaluating a valve's remaining service life.
Frequently Asked Questions About Reversing Valve Diagnostics
Heat Pump Not Working?
We service all heat pump brands and carry common parts on every truck.