Heat Pump Replacement
An aging heat pump that's losing capacity, cycling oddly, or needing repeat repairs isn't always worth patching again. Chauffage Climatisation Gatineau helps Gatineau-area homeowners weigh replacement against repair and, when replacement makes sense, plans it properly rather than dropping in a like-for-like unit.

Signs it's time to replace
Heat pumps generally show a gradual decline before they fail outright: reduced heating output in mild weather, longer run times to reach set temperature, rising energy use, or refrigerant issues that keep recurring. A unit needing frequent service calls, or one where a major component such as the compressor has failed, is often better replaced than repaired again, particularly if it's been in service for many years.
- Noticeably reduced heating or cooling capacity
- Repeated refrigerant leaks or low-charge symptoms
- Compressor or major component failure
- Rising energy bills without a change in usage
- Repair costs approaching a significant share of replacement
Reusing components or starting fresh
When a ductless or central heat pump is replaced, some components, such as line sets or indoor mounting brackets, may be reusable if they're in good condition and compatible with the new equipment. Others, particularly older line sets rated for outgoing refrigerants, often need replacement to match new equipment requirements. We assess this rather than assuming everything can carry over.
Refrigerant changes and resizing
Refrigerant standards have shifted over the years, and a new heat pump may use a different refrigerant than your old system, which usually rules out reusing the old line set or outdoor charge. Replacement is also a good time to revisit sizing: a unit installed years ago may no longer match your home if you've since finished a basement, added insulation, or changed how rooms are used.
How it works
- 01
Diagnosis and evaluation
We assess the current system's condition, age and performance to determine whether repair or replacement makes more sense.
- 02
Component and sizing review
We check which existing components can be reused and recalculate sizing based on your home's current needs, not the old unit's rated capacity.
- 03
Removal and installation
The old equipment is removed, new equipment installed and connected, and the system is charged, tested and explained before we finish up.
Frequently asked questions
How do I know if I should repair or replace my heat pump?
It generally comes down to the system's age, how often it's needed repairs, and whether the failed component is major, such as a compressor. A technician can walk you through the trade-offs for your specific unit.
Can the new heat pump use my existing line set?
Sometimes, but it depends on the line set's condition and whether it's rated for the refrigerant used in the new equipment. Many replacements do require new line sets.
Will the new unit be the same size as my old one?
Not necessarily. We recalculate sizing based on your home's current condition and needs, which may be different from when the original unit was installed, especially after renovations.
Does refrigerant type matter for replacement?
Yes. Older systems may use refrigerants that are being phased out, and new equipment typically uses a different type, which is one reason old components often can't simply be reconnected to new equipment.
How long does a heat pump typically last before replacement is worth considering?
It varies with usage, maintenance history and installation quality, so we look at the specific system's condition and repair history rather than relying on age alone.
Related services
- Heat pumpsChoosing and installing heat pumps suited to our climate.
- Heat pump repairError codes, icing, noise, loss of performance.
- Ductless wall-mounted heat pumpsDuctless systems with one or several indoor heads.
- Central heat pumpsA heat pump connected to your existing ductwork.
- Repair or replace?How to decide when a unit is getting old.
A project, a question or a breakdown?
Send us the details or call us. We assess the situation with you before proposing anything.
Call us 24/7 — Our phone line is open at all times. Technician availability is confirmed during the call.