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Heat Pump Repair · Hamilton, OntarioHeat Pump Repair in Hamilton
Heat pump repair in Hamilton costs $150–$800 for most faults, after a $90–$150 diagnostic that comes off the bill if you go ahead. Whether it can wait depends on your backup. With a gas furnace behind the heat pump, switch the thermostat to emergency heat and book a normal visit; with no other heat source and the temperature below freezing, treat it as a no-heat call and phone the 24/7 line.
What goes wrong with heat pumps in Hamilton, and what the fix costs
Hamilton's heat pumps fall into two groups, and they fail differently. In Ancaster, Binbrook, Waterdown and upper Stoney Creek, most are ducted units paired with a gas furnace, so a failure often goes unnoticed: the furnace quietly carries the house and the first clue is a higher Enbridge Gas bill. Below the Escarpment, radiator-heated brick houses in Westdale, Kirkendall and Durand more often have ductless multi-zone systems, where one fault on the outdoor unit can take out heating and cooling for half the house.
Defrost faults are the winter call we get most from the Mountain. Wind and lake-effect snow load the outdoor coil with frost faster up there than in the sheltered lower city, and the unit depends on a coil temperature sensor and a defrost control board to reverse briefly and melt it off. When either fails, the frost never clears and the coil becomes a block of ice within a day or two. A sensor is a small repair and a board runs $400–$800; neither is fixed by chipping at the ice, which bends the fins and can puncture the tubing.
The rest of the list is shared with air conditioners, plus one part that is not. Capacitors and contactors ($150–$350) and outdoor fan motors ($300–$700) see more wear on a heat pump than on an air conditioner because the outdoor unit runs in every season. The reversing valve is the heat pump's own part: when its solenoid coil fails or the valve sticks mid-travel, the unit is stuck in one mode or blows lukewarm air in both. Finding a refrigerant leak, sealing it and recharging to the nameplate weight is $300–$800 or more, and that work requires an ODP card.
Our rule for repair versus replacement is short: on a unit past 12 years, a failed compressor or a repair costing more than half the price of a new system is the point to stop spending. Under that age, repair it. Units still inside the manufacturer's parts warranty are a separate case, so have the model and serial number ready when you call. The heat pump repair page lists the symptoms worth a call, heat pump installation in Hamilton covers replacement, the Hamilton service area page shows where we work, and you can book a diagnostic online or by phone.
Why ZK Mechanical for heat pump repair in Hamilton
- ODP-certified refrigerant handling, with recovery equipment for R-410A and the newer A2L refrigerants R-32 and R-454B
- TSSA-licensed gas technicians, so the furnace side of a dual-fuel system is checked on the same visit
- Defrost board, coil sensor and reversing valve tested before any part is ordered
- Ducted systems in Ancaster, Binbrook and Stoney Creek and ductless multi-zone systems in lower-city radiator homes
- Mitsubishi, Daikin, Fujitsu, Lennox, Carrier, Goodman and Bosch heat pumps serviced
- Written price before the repair starts, with the replacement figure beside it on units past 12 years
- No evening, weekend or holiday surcharge on a no-heat call
Licensed technicians, Hamilton dispatch, no overtime charges.
Heat Pump Repair in Hamilton — FAQs
Is it an emergency if my heat pump stops heating in a Hamilton winter?
It depends on what else heats the house. With a gas furnace as backup, set the thermostat to emergency or auxiliary heat and the furnace takes over; the repair can be booked for a normal day. If the heat pump is the only heat source, as in some ductless lower-city homes, and it is below freezing outside, call the 24/7 line. Pipes in an unheated brick house can freeze overnight.
Why is my heat pump covered in ice?
A thin white frost that clears every hour or so is normal. A solid shell of ice that stays is not, and the usual causes are a failed coil sensor, a failed defrost board, a dead outdoor fan or low refrigerant. On the Mountain, check first that drifted snow is not blocking the coil and that a roof edge is not dripping onto the unit. Then shut it off and call; why a heat pump ices up explains each cause.
What does heat pump repair cost in Hamilton?
The diagnostic is $90–$150. Common repairs: capacitor or contactor $150–$350; outdoor fan or blower motor $300–$700; control or defrost board $400–$800; leak repair and recharge $300–$800 or more. Compressors and reversing valves are quoted case by case, because the refrigerant has to be recovered and the system evacuated again afterwards. The price is given to you on paper before any part is fitted.
My heat pump won't restart after a power outage. What should I check?
Wait ten minutes first; most units hold off restarting after power returns to protect the compressor. Then check the breaker in the panel and the disconnect switch beside the outdoor unit, and confirm the thermostat is still in heat mode. If the breaker trips again when the unit starts, leave it off. A breaker that trips twice points to a shorted capacitor, motor or compressor and needs a technician.
Do you repair ductless heads as well as central heat pumps?
Yes. The common ductless calls are a head dripping water down the wall from a blocked condensate drain, a blinking fault light, and one head on a multi-zone system that has stopped responding. Have the brand and the blink pattern or code ready when you phone, because it narrows the fault before the truck leaves. Our mini-split repair page covers those faults and what to check yourself.
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Heat Pump Repair in Hamilton — fast.
Emergency repair or planned upgrade, quoted in writing before any work starts.