Condo Heat Pump Repair | Downtown Markham

Downtown Markham 24-Unit Mid-Rise Heat Pump Repair

A documented project record from Condo HVAC Repair Toronto. A 24-unit Downtown Markham mid-rise had heat pumps stuck in one mode at the spring changeover and a run of contactor failures mid-season. A previous contractor had suggested chassis replacement for several units. The diagnostic showed most of them only needed valves and contactors.

By The Condo HVAC Repair Toronto Crew

$14,200 CAD 6 days over one season 24 suites

Technicians sliding a Trane water-source heat pump chassis out of a condo closet in Markham

Project Record

Project Attributes

Scope: Single-season water-source heat pump repair: reversing valves and contactors
Price: $14,200 CAD
Payment: Progress invoiced, net 30
Lead time: 1 week
On site: 6 days over one season
Client: Property manager (24-unit mid-rise)
Crew: James Kowalski (Ops Mgr) + 2 technicians
Equipment: Trane Axiom water-loop heat pumps
Neighbourhood: Downtown Markham
Building: 24 suites, 2000s construction

The Challenge

At changeover, several suites were stuck in heating mode with the building loop already on cooling temperatures. Mid-season, three compressors stopped on the same week, each with a pitted contactor.

The property manager had a quote recommending chassis swaps that would have cost well over the annual repair budget.

Results

No chassis replacements needed on the units originally flagged.
All 24 suites cooling and heating correctly through the season.
Progress invoiced on net 30 terms, within the annual repair budget.
Building moved onto an annual service contract with the same team.

How We Ran It

1

Loop first, unit second

James Kowalski checked loop supply temperature, flow and strainers before touching any chassis. The loop was healthy, which put the problem squarely in the units.
2

Reversing valve testing

Solenoid coils were tested for voltage and resistance, then valve shift was confirmed on gauges. Valves that would not shift were replaced with refrigerant recovered and recharged by weight.
3

Contactor and capacitor sweep

Every unit in the building had its contactor and run capacitor checked, so the remaining failures were caught before they stopped a compressor.