Not heating at −25, outdoor unit frozen solid, error code flashing, backup strips running up the Hydro Ottawa bill? HVAC Services Ottawa handles heat pump repair, installation and maintenance in Ottawa for ductless mini-splits, central and cold-climate systems — Mitsubishi, Fujitsu, Daikin, Lennox, Carrier, Goodman — in Orléans, Kanata, Barrhaven, Nepean, Stittsville and Riverside South. On-site diagnosis, flat-rate price in writing, most repairs done the same day.
Heat pump specialists
A heat pump in Ottawa works harder than almost anywhere: cooling at +33 in July, heating at −30 in January. When it quits, it's never at a convenient time. HVAC Services Ottawa repairs ductless mini-split, central ducted and cold-climate heat pumps of every brand, in homes, condos and businesses across the city.
The technician arrives with gauges, a leak detector, and the capacitors, boards, sensors and relays that fail most often. Diagnosis on site, failed part shown to you, flat-rate price in writing before any heat pump repair starts.
When to call
What you see at home, and what it usually means. In every case, switch the system off at the thermostat before calling so the fault doesn't get worse.
Reversing valve stuck, low refrigerant, tired compressor or a defrost cycle that never ends. The unit runs, but the air is lukewarm or cold.
Light frost in winter is normal. A block of ice that never melts isn't: defrost sensor, control board, blocked drain, or a unit sitting too low in the snow.
E1, P4, U4, a blinking light: every brand has its own codes. Write it down before you reset. It usually points to a sensor, indoor-outdoor communication or compressor overheating.
Rattling, grinding, loud humming: fan bearing, swollen capacitor, straining compressor. Nothing at all: breaker, board or remote. All diagnosed on the first visit.
A heat pump that stops heating at −28 overnight means a house at 12 degrees by morning and pipes at risk. A heat pump that dies during a heat warning means kids and seniors who can't sleep. We treat both as emergencies.
New and replacement
Sized to your house, not to whatever is on sale. Federal and Ontario rebate programs apply to certain cold-climate heat pumps; the rules change, so we tell you what applies at the time of your project, without inflating the numbers.
New installation
A Kanata home on baseboards, a Centretown condo with no AC: we calculate the load, choose ductless or central depending on your ductwork, mount the outdoor unit above the snow line and wire it to the thermostat. Full commissioning with pressure checks.
Replacement
After 12–15 years, a compressor or a major leak often costs more than half of a new unit. We reuse the bracket, lines and wiring where possible, recover the refrigerant to code and haul the old unit away.
Conversion
Century homes in the Glebe still on oil, 1970s bungalows in Nepean on baseboards: a cold-climate heat pump with electric backup cuts the Hydro Ottawa bill and removes the oil tank. We manage the switch, from old system removal to your first winter.
Which one do you have?
Wall-mounted indoor head, one outdoor unit, no ducts. The go-to for condos, additions and homes on baseboards. Typical faults: refrigerant leaks at the flare fittings, indoor fan motor, control board.
Paired with your existing furnace or air handler, it heats and cools the whole house through the ducts, with the furnace as backup. Typical faults: compressor, reversing valve, frozen indoor coil.
Rated to heat down to −25 or −30. No, you don't shut it off in a cold snap: that's what it's built for. If it stops or ices up at −20, that's a fault, not the weather.
Once a year
Most of the heat pumps we repair in January and July would have been caught at a fall or spring tune-up. One hour on site, and your unit keeps its efficiency and its manufacturer warranty, which usually requires documented annual service.
01
Clean indoor filters and the indoor coil; clear the outdoor fins of poplar fluff, grass and road dust.
02
High and low side readings, leak check at the fittings, superheat and subcooling. Refrigerant topped up only after a leak is fixed.
03
Capacitor test, tightened connections, compressor and fan amp draw, condensate drain and pump cleaned.
04
Defrost and sensor test, thermostat calibration, then a written report with the readings for your warranty file.
Honest call
In Ottawa's climate a well-maintained heat pump runs 12 to 15 years; one that's never serviced often under 10. The technician tells you where yours sits and what a repair is worth against a new unit.
Every part and every new unit is covered by the manufacturer warranty; we hand you the paperwork and register it.
Commercial
Offices on Bank Street, retail in Orléans and Kanata, apartment buildings in Vanier and Centretown with a mini-split in every unit: a commercial heat pump down means tenants calling and staff who can't work. We repair and maintain multi-zone systems, multiple wall units and central commercial heat pumps, with annual maintenance contracts for buildings.
Every brand sold in Ontario, OEM parts whenever the manufacturer warranty requires them.
FAQ
A capacitor or sensor is the low end; a board or fan motor the middle; a compressor or major leak the top, where we compare against a new unit. We don't quote over the phone because we don't guess: the technician diagnoses on site and gives you a flat-rate price in writing before starting.
First check the remote is in heat mode, not fan, and the filter isn't clogged. If both are fine, it's usually low refrigerant, a stuck reversing valve or a defrost cycle that won't end. All repairable in most cases.
A cold-climate heat pump, no: it's rated to heat down to −25 or −30. An older standard model loses efficiency below −15 and hands off to the backup heat automatically; you don't need to switch anything. If it ices up or shuts down at those temperatures, it's a fault.
Light frost that clears on every defrost cycle, yes. A block of ice that grows day after day or traps the fan, no: defrost has failed. Don't chip at it, you'll puncture the coil. Call us for heat pump repair.
Yes: new installs, replacements and conversions from oil or electric heat, across Ottawa. Federal and Ontario rebate programs exist for eligible cold-climate heat pumps, mainly when replacing oil or baseboard heat; amounts and criteria change each year, so we tell you what applies when you're ready, without promising a figure.
All of them: Mitsubishi, Fujitsu, Daikin, LG, Gree, Lennox, Carrier, Goodman, Bosch, Trane. Ductless mini-splits, central ducted and cold-climate units. For heat pumps still under manufacturer warranty we use OEM parts so the warranty stays valid, and annual heat pump maintenance keeps it that way.
Book a service
Furnace, heat pump, boiler or water heater: leave your details and we'll call back to set a time and give you a flat-rate price.
No heat, no hot water, AC down: our emergency line answers 24/7, anywhere in Ottawa.
(613) 701-6014We call back within the hour. For emergencies call (613) 701-6014.
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Reviews
Ductless, central and cold-climate heat pumps in Orléans, Kanata, Barrhaven, Stittsville and the Glebe.
Ductless unit blowing cold air at −23 with an error code flashing. I searched "heat pump repair near me" and HVAC Services Ottawa called back in ten minutes. Stuck reversing valve, fixed the same afternoon. The tech showed me the part and explained what the code meant. Price matched what they said on the phone.
Andrea K.
Stittsville
Jan 23, 2026
Booked heat pump maintenance in Ottawa every October since we moved to Kanata. Coils cleaned, pressures checked, capacitor tested, written report with the readings. This year they caught a half-blocked drain before it flooded the basement. One hour, flat rate, no surprises.
Graham T.
Kanata Lakes
Oct 6, 2026
Heat pump installation in Ottawa for a 1915 house in the Glebe still on oil. They did a room-by-room load calc, recommended a cold-climate model, mounted the outdoor unit high because of snow and pulled the old tank. Pointed me to the rebate program to check myself. First winter, backup heat didn't come on until −26.
Nicole F.
The Glebe
Apr 11, 2026
July heat warning, central heat pump humming loud and not cooling. Typed "heat pump ottawa near me", called three places, only one could come the same day. Swollen capacitor and a seized outdoor fan, both replaced from the truck. House at 22 by evening. They actually cover Orléans, not just on paper.
Marc-André B.
Orléans
Jul 14, 2026
Outdoor unit trapped in a block of ice; another company told me to shut it off all winter. HVAC Services Ottawa came on a Sunday evening: dead defrost sensor, replaced, and they raised the unit 30 cm out of the snow. A cold-climate heat pump is supposed to run at −25, and now it does. Honest Ottawa heat pump repair.
Hélène D.
Barrhaven
Feb 8, 2026
I manage a 14-unit building in Vanier with a mini-split in every apartment. Two were 16 years old and still on R-22. They told me straight which ones were worth repairing and which to replace, swapped the two old ones in a day and put the other twelve on an annual maintenance contract. Tenant calls stopped.
Samir H.
Vanier · property manager
May 27, 2026
Service area
Orléans to Kanata, Barrhaven to Rockland, 24/7. We dispatch the technician closest to your address, not whoever is free first.
Don't see your area? (613) 701-6014, we likely cover it.
East
Orléans, Cumberland, Rockland
West
Kanata, Stittsville, Carp
South
Barrhaven, Riverside South, Manotick
Central
Glebe, Westboro, Centretown, Old Ottawa South
Nepean & Gloucester
Nepean, Gloucester, Vanier, Sandy Hill
Rural
Greely, Richmond, Embrun, Russell, Kemptville
