Loss of efficiency in the heat: a typical case well managed by AirGreen
One summer afternoon in Boisbriand , on Montreal's North Shore , a customer contacted us about a Haxxair wall-mounted heat pump that was no longer producing cold air despite seemingly normal operation. The outdoor unit was running, the indoor unit's shutters were opening, but the ambient temperature remained stubbornly high. At AirGreen , we know that such a symptom can have several origins—from a lack of refrigerant to a compressor failure—and our role is to find the exact cause.
Initial Inspection: Complete HVAC System Analysis
Upon our arrival, our certified technician carried out a complete evaluation of the Haxxair system , consisting of a wall-mounted indoor unit and a compact outdoor compressor installed on a wall bracket.
Basic checks included:
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Measuring refrigerant pressure using an electronic pressure gauge.
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Condenser fan and compressor control .
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Visual inspection of flare fittings and fluid line.
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Differential temperature test between the evaporator inlet and outlet.
The results quickly guided our diagnosis: abnormally low circuit pressure and blowing temperature almost identical to that of the room . A refrigerant leak was therefore likely.
Diagnosis: micro-leak in the refrigeration circuit
After a tracer gas injection and a nitrogen test, we detected a micro-leak on the flare connection of the liquid line , in the immediate vicinity of the Haxxair compressor.
This leak, invisible to the naked eye, caused a progressive loss of R410A refrigerant gas , resulting in:
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A drop in cooling performance .
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Prolonged operation of the compressor , increasing electricity consumption.
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Overheating of the coils , risking damage to the electronic components.
Technical repair carried out
Once the leak was identified, our team undertook a series of precise interventions in accordance with AirGreen standards:
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Complete degassing and recovery of the remaining refrigerant using a certified recuperator.
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Replacement of the defective flare fitting and tightening to the exact torque prescribed by Haxxair.
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Complete system vacuum down to -760 mmHg to remove all moisture.
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Recharge the refrigeration circuit with the exact quantity of R410A (1.15 kg) according to the nameplate.
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Final nitrogen leak test and subcooling and superheat check .
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Cleaning the outdoor condenser coil , slightly clogged with roof dust.
Once these steps were completed, the performance measurements were again optimal:
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Stable pressure at 125 PSI (low side) and 380 PSI (high side).
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Indoor temperature difference of 11°C.
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Reduced operating noise and stable compressor.
Result: restored comfort and optimized energy efficiency
As soon as the repair was completed, cold air returned to the home. The customer, who previously used a fan, noticed a rapid and even cooling of his space.
Our Haxxair heat pump was now delivering energy efficiency in line with its rated SEER , and the noise level was once again very low, demonstrating good compression cycle balancing.
This type of intervention perfectly illustrates AirGreen's expertise : rigorous diagnosis, targeted repair, and total transparency with the customer.
Why trust AirGreen for your Haxxair repairs?
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Technicians specializing in popular brands like Haxxair, Midea, Fujitsu, Gree and Sharp.
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Professional diagnostic equipment (digital pressure gauges, tracer gas leak detectors, certified vacuum pump).
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Compliance with environmental standards for the recovery and recharging of refrigerant gases.
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Fast and courteous service , covering Montreal, Laval, the North Shore and the South Shore.
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Warranty on repairs and replaced parts.
Maintenance tips to extend the life of a Haxxair heat pump
To avoid costly breakdowns and maintain optimal performance of your HVAC system, we recommend:
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Clean the internal filters every 4 to 6 weeks during the warm season.
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Have flare fittings and gas pressure inspected annually before summer.
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Avoid obstructions around the outdoor condenser (leaves, dust, objects).
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Schedule an annual AirGreen inspection , including performance testing and electrical check.
A typical intervention of AirGreen efficiency
This Haxxair heat pump repair in Boisbriand demonstrates our comprehensive and professional approach: quickly identifying the cause , repairing with precision , and restoring energy performance without compromise. Thanks to our expertise, the customer now benefits from a high-performance, energy-efficient, and reliable system for seasons to come.
At AirGreen , we believe that well-executed service is a reflection of lasting trust.