Lennox heat pump refrigerant leak repair in Beaconsfield
The leak was at a service valve fitting, found with a nitrogen pressure test, repaired and recharged the same afternoon.
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On site
How the call went
“It runs constantly and the house never gets warm”
Called at 11:20 on a Thursday. Twelve-year-old system, backup element carrying the load, hydro bill up sharply over two months. The customer had already received quotes for a full system replacement.
Electrical first, then the refrigerant circuit
Capacitor microfarads, contactor, compressor and fan amp draw, defrost thermostat, then superheat and subcooling at the service ports. Everything electrical read within spec, which is what pointed at charge rather than a component.
Superheat
24 °F
Spec 8–12 °F
Out of spec
Subcooling
3 °F
Spec 10–14 °F
Out of spec
Compressor draw
11.4 A
Spec 10.8–12.6 A
Within spec
Run capacitor
44.2 µF
Spec 45 µF ±6%
Within spec
Oil residue at the liquid-line service valve
Charge was roughly 40% low. An electronic leak detector flagged the liquid-line service valve area, and a soap test confirmed bubbling at the flare. Nitrogen at 300 psi lost 40 psi in twenty minutes, a genuine leak rather than a slow seasonal loss. No leak anywhere in the indoor coil or the refrigerant lines.
A failed fitting, not a failed system
Compressor, coil, refrigerant lines and controls were all sound. The fault was a failed flare at the liquid-line service valve, most likely from vibration over twelve seasons. Repairing the joint and recharging restores the system to nameplate performance.
Recovered, brazed, vacuumed, recharged by weight
Back on spec the same afternoon
Backup element stopped carrying the load. Follow-up leak check scheduled with the spring maintenance visit.
We will assess the system and explain your repair options. We also offer a free visit and written estimate for equipment replacement.
514-696-4629