A quick service call for a troubled outdoor unit
At AirGreen , we regularly receive calls related to wall-mounted heat pump breakdowns during the summer season. This was recently the case in Blainville , on the North Shore of Montreal , where a homeowner contacted us after noticing that his Zephyr heat pump was no longer cooling his home properly. The unit, installed outside on a brick wall, seemed to be working intermittently, and an abnormal noise was coming from the outside fan.
On-site diagnosis: overloaded fan and clogged condenser
Upon our arrival, our technician performed a complete inspection of the Zephyr condenser . He quickly noted several problematic elements:
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Accumulation of debris and dust on the condenser fins, which reduced heat transfer.
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A fan motor exhibiting abnormal electrical resistance , a sign of advanced wear.
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Excessive vibration due to slightly loose support.
Before any intervention, we thoroughly cleaned the fins with a biodegradable cleaner, then tested the motor for electrical continuity . The motor displayed a value outside of tolerance, confirming the need for replacement.
Engine replacement and system adjustment
The replacement engine, compatible with the Zephyr model, was installed on site. We then:
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Readjusted the wall bracket to stabilize the structure.
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Checked the R-410A refrigerant pressure , which was slightly lower than the standard.
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Perform a refrigerant top-up to optimize compressor performance.
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Tested the complete system on a full heating and cooling cycle.
The result was immediate: the abnormal noise had disappeared, and the flow of cold air inside the residence had significantly increased.
The value of regular maintenance on wall-mounted heat pumps
This intervention illustrates a classic problem: the lack of regular maintenance. A simple annual cleaning and a gas pressure check would have prevented the breakdown.
At AirGreen , we recommend all our customers to:
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Clean the indoor unit filters every month.
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Clear the outdoor condenser of leaves, dust and dirt.
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Have professional preventative maintenance performed once a year, especially before summer.
A well-maintained Zephyr heat pump can operate efficiently for over 12 years, while reducing your energy consumption.
Why choose AirGreen for your HVAC repairs in Blainville and on the North Shore
Our team is trained to work on all brands of wall-mounted heat pumps — Zephyr, Gree, Fujitsu, Sharp, Midea, Bosch, Goodman , and many others. We combine:
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Certified technical expertise .
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Fast and transparent service .
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Original parts adapted to each model.
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Complete follow-up after each intervention.
We know that the comfort of your home depends on the proper functioning of your HVAC system. That's why we respond quickly everywhere in Blainville , Boisbriand , Sainte-Thérèse , and the entire North Shore of Montreal .
Result: comfort restored and customer satisfied
At the end of the repair, the client found a fully functional system. His Zephyr heat pump now operates quietly and efficiently, ready to handle both hot July days and cooler September evenings.
This repair is a typical example of AirGreen's expertise : rapid diagnosis, lasting repairs, and ensuring optimal energy performance of residential HVAC equipment throughout Greater Montreal.