Diagnose heating, cooling, cycling, icing and airflow faults in heat pump systems across Vancouver's detached homes, condos, townhomes and heritage properties.
Vancouver
We diagnose and repair heat pump systems throughout Vancouver — East Van, Kitsilano, Mount Pleasant, Strathcona, Marpole, South Vancouver, Dunbar, Kerrisdale, Fairview, Coal Harbour and Yaletown. Vancouver's housing stock ranges from postwar bungalows with older ductwork to newer high-density condos with compact ductless systems, and heritage homes with limited mechanical access. Each type has its own repair considerations — we account for them from the first service call.
The system runs but indoor temperature doesn't reach setpoint in either heating or cooling mode. May indicate a refrigerant issue, a failed reversing valve, or a coil problem. In older Vancouver homes with poor insulation, a correctly functioning heat pump may still struggle against high heat loss — diagnosis covers both the system and operating conditions.
A heat pump that won't start may have a tripped breaker, a failed capacitor or contactor, a control fault, or a locked-out compressor. In condo or strata settings, check whether the fault originates at the suite panel or a shared electrical room. We test the full circuit before replacing components.
Frequent start-stop cycles that don't complete a full heating or cooling run often indicate a control fault, a refrigerant pressure issue, or — in detached homes — an oversized system that reaches thermostat setpoint too quickly and short-cycles rather than running full comfort cycles.
Light frost on the outdoor coil during heating mode is normal and cleared by the system's defrost cycle. Heavy ice that persists after a defrost cycle, encases the unit, or appears during cooling mode is not normal. In compact urban lots where the outdoor unit has limited airflow clearance, airflow restriction can contribute to icing.
Low airflow in a ducted system may indicate a dirty filter, a failing blower motor, or a duct restriction — common in Vancouver's older detached homes where original ductwork wasn't designed for a heat pump. Ductless mini-split systems in condos may show airflow issues from a dirty indoor coil or a failed fan assembly.
Grinding or rattling from the outdoor unit may indicate a failing fan motor or compressor bearing. Gurgling inside the indoor unit can suggest a refrigerant flow issue. Banging on startup sometimes points to a compressor mounting or liquid slugging problem. Each has a distinct cause and a different repair path.
Vancouver's mild, damp winters are well within the normal operating range of modern heat pumps. Light frost forming on the outdoor coil during heating operation is expected — the system's defrost cycle clears it automatically. Heavy ice build-up that doesn't self-clear, ice appearing during mild above-freezing weather, or icing during summer cooling mode all suggest a defrost fault, a refrigerant issue, or an airflow restriction. In dense urban installations where an outdoor unit is hemmed in by fencing or adjacent structures, reduced airflow around the coil can also contribute to abnormal frost patterns.
If you suspect a refrigerant issue — reduced heating or cooling capacity, ice on the coil under normal conditions, or hissing near the outdoor unit — do not attempt to add refrigerant, open refrigerant lines, or bypass safety controls. Refrigerant handling requires certification and specialized equipment. A licensed technician can properly diagnose, repair and recharge the system.
Decision Guide
The right path depends on what's failed, the system's age and condition, and how repair cost compares to replacement.
If replacement is the right path, see our heat pump installation Vancouver page or browse Heat Pump Replacement for an overview of what replacement involves. For ongoing care between service calls, see Heat Pump Maintenance.
Common Questions
Yes. We diagnose and repair heat pump systems across Vancouver — East Van, Kitsilano, Mount Pleasant, Marpole, South Vancouver, Coal Harbour, Yaletown, Strathcona and beyond — including ductless mini-splits in condos and apartments, and ducted systems in detached homes. Vancouver's wide mix of housing types and ages means we regularly work on both compact condo installations and larger heritage homes with older duct systems.
Common causes include a refrigerant issue reducing heat exchange efficiency, a failed reversing valve that prevents the system from switching between heating and cooling modes, a defrost fault leaving the outdoor coil blocked with ice, a failed compressor, or a control fault. In older Vancouver homes with limited attic insulation or single-pane heritage windows, a heat pump that appears to underperform may actually be correctly sized but working against unusually high heat loss — diagnosis covers the system and the operating conditions.
Light frost forming on the outdoor coil during heating operation is normal — the heat pump runs periodic defrost cycles to clear it automatically. What isn't normal is a thick build-up of ice that encases the unit, persists after a defrost cycle, or appears during summer cooling mode. Heavy icing that the system doesn't clear may indicate a defrost system fault, low refrigerant charge, or an airflow restriction, and warrants a service call.
It depends on the diagnosis, the system's age and condition, and how repair cost compares to replacement. A newer heat pump with a single failed component — a capacitor, reversing valve, fan motor, or control board — usually makes sense to repair. An older system with a failed compressor or a refrigerant circuit fault may be more economical to replace, particularly when the refrigerant type is being phased out. We give an honest assessment after diagnosis.
Condo and strata installations can introduce access considerations — the outdoor unit may be on a rooftop, in a mechanical room, or in a constrained alcove, and strata approval may be required for certain work. We're familiar with the range of Vancouver condo configurations and plan service calls accordingly. If your strata manages the shared plant, clarify the boundary between owner-responsibility and strata-responsibility equipment before booking.
The specific fault and component involved, the system type and age, the refrigerant type, and site access all affect repair cost. In Vancouver, condo installations sometimes add complexity to a service call depending on outdoor-unit access. A diagnostic visit identifies the actual cause and scope before any repair work is quoted.
Helpful information includes the heat pump brand, model and age if known, a description of the symptom (what the system is doing or not doing, when it started, any error codes or flashing lights on the indoor or outdoor unit), and whether the issue is in heating mode, cooling mode, or both. Any recent filter changes or service history is also useful context for the technician.
We diagnose the actual fault before recommending any repair — no guesswork, no pressure toward unnecessary replacement.