Fast Response for a Crucial HVAC Repair in LaSalle

A recent service call brought our team to LaSalle to work on a Sharp wall-mounted heat pump, specifically an Eco Inverter model featuring Plasmacluster Ion technology. The outdoor unit, installed in a semi-sheltered area, was showing clear signs of malfunction: loud startup noises, reduced heating performance, and frequent shut-offs in cooling mode. At AirGreen, we understand that thermal comfort in LaSalle homes — especially during sudden temperature swings typical of Montreal’s southwest — simply can’t wait. Here’s a detailed look at this technical service intervention.

Sharp Eco Inverter Unit: a reliable system… but one that needs regular maintenance

This Sharp wall-mounted heat pump with Plasmacluster air purification technology is known for its air filtering capabilities and energy-efficient performance. However, even the best systems require proper maintenance to remain effective. In this case, the unit hadn’t received any servicing in over two years.

Our inspection revealed several critical issues:

• Heavy buildup of dust and pollutants on the outdoor heat exchanger.

• Dirty outdoor fan causing rotational imbalance.

• Slight corrosion on communication connectors between the indoor and outdoor units.

• Low R-410A refrigerant levels (signs of a probable micro leak).

Precise diagnosis and quick action plan

Upon arrival in LaSalle, our HVAC technicians carried out a comprehensive diagnostic using digital equipment. Operating pressures were too low in heating mode, while the compressor was shutting down prematurely in cooling mode.

Here are the main steps of our service intervention:

1. Thorough cleaning of the outdoor unit: Dust removal from the turbine, low-pressure condenser wash, antibacterial treatment.

2. Wiring check: Cleaning and protection of connectors with anti-corrosion solution.

3. Leak detection: Electronic inspection confirmed a micro leak at a soldered copper elbow.

4. Leak repair: Copper brazing with nitrogen purge, successful pressure test after 45 minutes.

5. Refrigerant recharge: Full refill with the manufacturer-recommended amount of Sharp-compatible refrigerant.

6. Final calibration: Evaporation and condensation temperature checks, fan speed testing, and energy efficiency control (SEER/HSPF).

Restoring peak performance to the Sharp wall-mounted heat pump

After the intervention, we noticed significant improvements:

• Restored quiet operation, no more vibration.

• Faster warm-up time.

• Stable electrical consumption levels.

• Fully restored Plasmacluster Ion purification system performance.

The client, a longtime LaSalle resident, confirmed that the unit hadn’t worked this well since installation. Since the system is located in an open-concept room on the main floor, this full service noticeably improved comfort throughout the entire home.

Personalized advice and preventive maintenance

We also took the time to walk the client through best practices for maintenance, including:

• Monthly cleaning of the indoor filter.

• Visual inspection of the outdoor unit after each season.

• Booking a professional annual HVAC maintenance, which could prevent costly future repairs.

We left the client with a detailed report of our work, including before/after photos, pressure readings, and personalized recommendations based on his home setup.

Why choose AirGreen for your wall-mounted heat pump repairs in LaSalle?

At AirGreen, our team of wall-mounted heat pump repair experts in LaSalle is committed to delivering transparent, efficient, and long-lasting service. Our certified technicians work on all brands, including Sharp, Fujitsu, Gree, LG, Daikin, and more. Every service call is handled with precision, following strict safety and energy-efficiency standards.

Whether it’s a refrigerant leak, fan malfunction, or electronic communication error, we have the tools, expertise, and hands-on experience to get your system back to full operation.

Areas we serve

We respond quickly for all HVAC repairs in the following areas:

• Montreal (including LaSalle, Verdun, Lachine, NDG, etc.)

• Laval

• Longueuil and the South Shore

• North Shore (including Terrebonne, Blainville, Repentigny)

AirGreen expertise: more than just a repair

Every call is a chance for us to showcase our know-how and attention to detail. With this LaSalle repair, we not only resolved a technical issue, but also reinforced a client’s trust in our HVAC services. This is the long-term relationship we nurture, call after call.

Summary of the service call in LaSalle