Central Montreal · residential
Heat pump repair in Old Montreal
Heat pumps in Old Montreal go into buildings protected as a declared heritage site, where a new outdoor unit or refrigerant line can change the exterior. Ductless systems avoid new ductwork inside the structure. JCD repairs all brands and plans where outdoor units and line sets will go before the work starts.

The most common heat pump failures are a refrigerant leak, a failed reversing valve, a defrost board fault and an iced-over outdoor coil. Same-day emergency service in Old Montreal, seven days a week: call 514-696-4629.
Common heat pump problems we repair
Mention the symptom when you call so our team can prepare.

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Water drips from a wall-mounted head
Water runs down the wall under a ductless indoor unit, most often in cooling season.
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A ductless head blinks or shows an error code
The indoor unit stops and its light flashes a pattern or a code. Note it before you call: it tells the technician where to start.
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Ice on the refrigerant line in cooling mode
Frost forms on the insulated line or the indoor coil while the heat pump is cooling.
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Cool air in heating mode
The heat pump runs, but the air from the vents is lukewarm or cool while the thermostat calls for heat.







Central Montreal · Old Montreal
Homes and buildings in Old Montreal
Stone was the main material in the French period, much of the district was rebuilt after fires under British rule, and Victorian and early 20th-century buildings followed. Where a building has no yard, the roof or an interior courtyard may be the only place for an outdoor unit.
- 1964 declared a heritage site
Source: Ville de Montréal.
Repair or replace?
Under twelve years and a first major fault: repair, almost always. Over fifteen years, or a second major failure inside two seasons: replacement is worth considering.
Repair
- System age
- Under 12 years
- Failure history
- First major fault
- Compressor
- Within amp rating
Replace
- System age
- 15 years or more
- Failure history
- Second in two seasons
- Compressor
- Shorted or seized
Verdict
In between, we assess the system and explain the repair and replacement options. We offer a free visit and written estimate for equipment replacement.
LOCAL CONSIDERATIONS · Old Montreal
What is different about repairs here
- In a declared heritage site, modifying a building's exterior appearance can need the Minister of Culture's authorization (art. 64), on top of the borough permit.
- Ville-Marie bans permanent units in a front yard and on a front balcony, and requires flat-roof units to sit back from the façade by twice their height.
- In a district this dense, neighbouring windows and shared walls are close, so sound and vibration from an outdoor unit are worth planning for.
Heat pump repair nearby
We also serve the neighbouring areas.
Other services in Old Montreal
If the heat pump is not the problem, or not the only one.


