Heating
Heat pump not heating or cooling right? We diagnose and repair cold-climate heat pumps fast, with upfront pricing.
Heat pumps work harder than any other system in your home — they run year-round, in both directions. When one stops heating or cooling properly, the cause is often specific to heat-pump operation: a failed reversing valve stuck in one mode, a defrost control or sensor fault leaving the outdoor coil iced over, a low refrigerant charge, or auxiliary heat locking on and quietly tripling your electricity bill.
NorthPoint's technicians are trained on cold-climate and conventional heat pumps from every major manufacturer, including inverter-driven systems that require manufacturer-specific diagnostics rather than a generic gauge set. We read the fault history, test the actual sensors and controls, and verify refrigerant charge properly before recommending anything.
A common Toronto call is a heat pump that appears frozen in January. Ice on the outdoor coil is normal in cold, damp weather — the defrost cycle should clear it every 30 to 90 minutes. When the coil stays encased in ice, the defrost board, sensor, or reversing valve is the usual culprit, and running the system that way risks the compressor.
We diagnose the root cause, give you a written price up front, and get the system back to running on the correct heat source instead of expensive backup strips.
A reversing valve stuck in one mode, a defrost control or sensor fault leaving the outdoor coil iced over, low refrigerant charge, or auxiliary electric heat locking on and quietly tripling your hydro bill. These are not furnace or AC faults, and diagnosing them requires knowing how the system is supposed to behave in each mode.
Some frost is normal in cold, damp weather — the defrost cycle should clear it every 30 to 90 minutes. A coil that stays encased in ice points at the defrost board, the sensor, or the reversing valve, and running the system in that state risks the compressor. Shut it down and call rather than chipping at it.
Modern variable-speed heat pumps report faults through their own control software. A generic gauge set will not tell you what a specific manufacturer's error code means. Our technicians are trained across the major cold-climate and inverter platforms so the diagnosis is based on the system's own data.
The most common bill shock we are called about is a heat pump that has quietly defaulted to electric backup. Fixing the underlying fault — charge, sensor, control or thermostat staging — puts the system back on the efficient heat source, which usually pays for the repair inside a season.




“We switched from another plumbing and HVAC service to NorthPoint and we couldn’t be more happy. Their prices are more affordable, their people more knowledgeable, and they get to you fast — especially important when your AC blows out in the middle of summer!”
— B. Parker
“The techs are prompt, friendly and trustworthy. They are knowledgeable and professional, and they explain what they are doing instead of just handing you a bill. I highly recommend them.”
— Barbara K.
“Showed up the same afternoon and explained everything he was doing. Very thorough, polite and professional — and cleaned up the whole area afterward.”
— Aimee B.
Call for heat pump repair if you notice:
We service every part of a ducted or ductless heat pump:
Heat pumps are increasingly common across Toronto as homeowners electrify heating. We repair both the newer cold-climate systems in retrofits and the ductless units common in condos and additions — and we know what performance to expect from each in a GTA winter.
A little frost that clears during defrost is normal in winter. Heavy, persistent ice is not and needs a technician.
Yes — ducted and ductless heat pumps of all major brands, regardless of installer.
Causes range from refrigerant loss to a reversing-valve or defrost fault. We diagnose the specific issue.
It depends on age and the fault. For older units with a major failure, replacement may be better value — we advise honestly.
We offer fast scheduling across the GTA and prioritize no-heat calls in winter.
Yes. We repair heat pumps year-round, including cold-weather heating faults.