Heat Pump Not Heating in Pleasanton, CA

Heat Pump Not Heating in Pleasanton

Pleasanton equipment works hard. Inland summers run hot through the back half of the year, so the same heat pump that cools all summer is the one heating in winter, and that year-round duty wears parts. Pleasanton's split market matters here too: the older Vintage Hills, Foothill, and downtown tracts run systems in the 25-to-40-year range, while the Ruby Hill and East Pleasanton estates carry more complex multi-zone setups. A no-heat call looks different across those.

On an aging tract system, a heat pump that won't heat is usually a worn wear-part: a capacitor, a contactor, or a reversing valve whose solenoid finally quit. On a refrigerant leak, system age and refrigerant type drive the decision, and on R-22 equipment the cost of reclaimed refrigerant pushes the replacement conversation. On a Ruby Hill or Castlewood multi-zone system, a control-board or zone-damper fault can leave part of the house cold.

Pleasanton winters are mild and well inside heat-pump range, so the cold isn't the problem. A no-heat call is a part to find. We diagnose it, run the repair-or-replace math honestly when the part points at a bigger problem, and put the numbers on the written estimate before any work.

Common causes

Run capacitor worn by heavy duty cycles. A heat pump that cools through hot Pleasanton summers and heats in winter cycles its capacitor hard. A weak capacitor reads low against its rating and leaves the compressor or fan unable to start, so no heat. We carry the common sizes and replace it the same visit.

Reversing valve stuck in cooling. If the unit runs but blows cool during a heat call, the reversing valve isn't switching to heating. The solenoid coil is the frequent failure and a clean swap; a seized valve body is more involved. We confirm with line-temperature readings before quoting either.

Refrigerant leak, R-22 changes the math. A slow leak cuts heating capacity, and on older Pleasanton tract systems the refrigerant is often R-22. Reclaimed R-22 is expensive and a leaky system will leak again, so we pressure-test, find the leak, and lay out repair versus replacement with real numbers rather than just recharging.

Contactor failure. The contactor powers the outdoor unit, and years of heavy cycling pit the contacts until they won't make clean connection. The result is a no-start or intermittent start. It's a low-cost wear part we meter and replace on the spot.

Zone control or damper fault on estate systems. Ruby Hill and Castlewood multi-zone systems can leave part of the house cold when a zone board or a damper actuator fails, even though the heat pump itself is heating. We test the board, the dampers, and the staging to find which zone isn't getting flow and why.

How we diagnose it

Confirm the heat call and observe whether the outdoor unit starts, hums, or stays silent.
Meter the run capacitor and inspect the contactor, the parts heavy summer duty wears first.
Identify the refrigerant type, then pressure-test and check the charge, R-22 changes the decision.
Read line temperatures to confirm whether the reversing valve is switching into heating.
On Ruby Hill and Castlewood multi-zone systems, test the zone board and dampers for a partial no-heat complaint.

$75 diagnostic, credited toward any repair over $200. You get a written quote before any work begins.

Heat Pump Not Heating in Pleasanton: common questions

How quickly can you reach Pleasanton?

Pleasanton is close to our San Ramon base and one of our core service areas, neighboring Dublin and Livermore too. No-heat calls get priority, and we target same-day when the schedule allows, though that's a best effort. Call (925) 999-4095 for a real window.

My old Pleasanton system stopped heating. Repair or replace?

It depends on the failed part, the system age, and the refrigerant. A capacitor on a worn but sound system is a quick repair. A refrigerant leak on R-22 usually tips toward replacement, because the refrigerant is expensive and the leak returns. We put both numbers on the estimate so you decide, no pressure either way.

If it cooled fine all summer, why won't it heat now?

Cooling and heating run the same refrigerant circuit in opposite directions. A heat pump can cool fine in summer and still fail to heat if the reversing valve won't switch, the charge drops, or the defrost control quits. The summer load also wears capacitors and contactors that then fail under the winter heat call. We find which one.

Nearby and related

Heat Pump Not Heating near Pleasanton: Dublin · Livermore · San Ramon .

This is usually a heat pump installation & service in Pleasanton job. See our heat pump installation & service overview or the Pleasanton service area.