An air conditioning system forgotten in a high-end home on the North Shore shouldn’t mean the end of indoor comfort. At AirGreen, we recently proved that even a luxury HVAC system left unused can be brought back to full performance thanks to our expertise. This service call story takes you behind the scenes of a high-end air conditioning system restoration, where technical precision, attention to detail, and professionalism brought an interior environment back to life.
An abandoned system—but not beyond saving
Our client, owner of a prestigious home in Blainville, contacted us after recently purchasing the property. During the inspection, they had noticed a high-efficiency central air conditioning system installed in the house—a unit that, according to the previous owner, had not been used or maintained for several years.
The system in question was a high-performance central air conditioner from Trane, model XV20i, with a capacity of 48,000 BTU. This type of unit usually offers exceptional cooling performance and energy efficiency, thanks to its variable-speed compressor and compatibility with smart thermostats. Unfortunately, due to lack of maintenance, the system no longer responded properly, made an unusual noise when starting, and failed to produce cold air.
Full diagnostic: a necessary first step
We began our service call with a complete HVAC inspection. Our technicians carried out:
-
An analysis of the compressor and refrigerant circuits
-
A check of the R-410A refrigerant quality
-
An inspection of the indoor air handler unit and blower
-
A check of the filter condition, coils, and electrical connections
-
A ductwork inspection to detect any leaks or blockages
The verdict was clear: although the unit had not suffered irreparable damage, several critical components were worn or slightly malfunctioning due to prolonged inactivity.
Restoration: precision and expertise on the North Shore
Once the diagnosis was complete, we developed a structured reconditioning plan, which included:
-
A deep cleaning of the evaporator and condenser coils, which were heavily clogged
-
Replacement of the start capacitor, damaged by moisture
-
A complete refrigerant circuit purge, followed by a refill of R-410A
-
An antibacterial cleaning of the ventilation system and replacement of the HEPA filter
-
Thermostat adjustments and a firmware update of the user interface
The project, completed over two days, was carried out without disrupting other electrical systems in the home. Our team also used this opportunity to calibrate the system to meet the real needs of the home, factoring in the glazed surfaces, orientation, and insulation levels.
The result: comfort restored and performance optimized
The client immediately noticed a dramatic improvement in comfort throughout the house. The system now operated quietly, smoothly, and precisely, delivering fast and consistent cooling, even in the sunniest rooms.
We also integrated the unit with a smart Ecobee thermostat, enabling remote control via mobile app, energy usage history, and monthly performance reports. These upgrades gave the client a modern, connected air conditioning system, without needing to replace the unit.
Key takeaways for high-end homeowners
Never skip maintenance
Even high-end systems that go unused still require regular HVAC maintenance to prevent passive wear. Capacitors, seals, and electrical circuits can degrade simply from exposure to moisture or temperature fluctuations.
Avoid unnecessary replacements
Many homeowners mistakenly believe that an old or non-functioning system must be replaced. In this case, restoring the unit saved over $8,000, while retaining a high-performance, reliable system.
Choose a qualified contractor
Servicing a high-end central air conditioning unit requires in-depth technical expertise. At AirGreen, our technicians are trained on the latest HVAC technologies and equipped with the specialized tools needed for high-efficiency systems like those from Trane, Lennox, Carrier, or Bosch.
Why trust AirGreen on the North Shore?
At AirGreen, we handle HVAC projects daily in Blainville, Terrebonne, Mascouche, Boisbriand, and the surrounding areas. Our commitment to quality, personalized service, and ability to tailor solutions to each property’s needs make us a trusted partner on the North Shore.
We also offer:
-
Custom maintenance contracts
-
Energy optimization for existing systems
-
Emergency repair services for critical failures
-
Support in accessing available grant programs, even in reconditioning cases (in certain circumstances)
Grants and energy savings: a point worth considering
While this wasn't a full replacement, some grants may still be available for homeowners restoring unused HVAC systems, provided they meet specific post-restoration energy performance thresholds. Our team helps clients verify eligibility for Hydro-Québec’s LogisVert grants, or other municipal programs.
Conclusion: air conditioning revived, client satisfied
This project perfectly illustrates what we do at AirGreen: turn forgotten systems into long-lasting comfort solutions. On the North Shore, we continue to show every day that our expertise in residential and high-end HVAC is matched only by our dedication to quality work.
Have an HVAC system that seems beyond saving or hasn’t been used in years? Don’t jump to conclusions. Call AirGreen, and let us assess what’s possible for you.
