Get your comfort ready for summer: simple but essential actions to maximize the performance of your wall-mounted AC
As the first warm days start to appear in Montréal, Laval, Longueuil, on the North Shore and South Shore, smart homeowners know that proper maintenance of their wall-mounted air conditioner or central air conditioning system is more than just a formality. It’s a way to ensure optimal comfort, significant energy savings, and a longer lifespan for your system. At AirGreen, we help hundreds of households and buildings each year take this proactive approach. Drawing on our expertise in HVAC maintenance, we’re sharing five essential tips that every homeowner should follow each spring to guarantee a worry-free summer.
Thoroughly clean your filters to ensure healthy air
A clogged air filter reduces airflow, overworks the compressor, and increases your electricity bill. It can also affect your health by letting dust and allergens circulate.
Our practical advice:
-
For wall-mounted air conditioners, remove the front panel and clean the filters with warm, soapy water. Let them dry completely before putting them back in.
-
For central systems, consider replacing high-efficiency (HEPA) filters every 3 months, or more often if you have pets or allergies.
AirGreen case study: During a maintenance call in Brossard, we found that the client hadn’t cleaned their filters in two years. After cleaning, their Gree Extreme 18,000 BTU wall-mounted heat pump showed a clear performance boost, and the ambient noise decreased.
Check the outdoor unit to ensure optimal performance
Dirt, fallen leaves, and debris can block the outdoor unit (condenser) of your central air conditioner or heat pump, reducing the system’s efficiency.
Here’s what to do:
-
Clear at least 60 cm (2 ft) of space around the unit.
-
Check that the fins aren’t bent. If they are, use a fin comb to gently straighten them.
-
Clean the unit exterior using a garden hose at low pressure.
Customer testimonial: In Sainte-Julie, a client contacted us because their Bosch BOVA system was no longer blowing cool air. A simple cleaning of the condenser solved the issue and avoided an expensive intervention.
Check for refrigerant leaks or low levels
A refrigerant shortage reduces cooling capacity and can damage the compressor. Unfortunately, these leaks often go unnoticed until the system stops cooling properly.
What to do:
-
Watch for gradually declining performance or unusual frost buildup on the refrigerant lines.
-
If you suspect a leak, never try to recharge the refrigerant yourself. Call a certified technician.
AirGreen in action: During a spring maintenance visit in Laval, our technicians detected a microleak on a Goodman central air conditioner. By acting quickly, we avoided a full breakdown during a heatwave.
Test and calibrate the thermostat if needed
A misconfigured or malfunctioning thermostat can make your air conditioner run inefficiently, which increases energy consumption and reduces comfort.
Technical tips:
-
If the thermostat is wireless, change the batteries.
-
Compare the actual room temperature to the one displayed. A discrepancy may mean it needs recalibration.
-
If you're using a smart thermostat (Nest, Ecobee), make sure all updates are installed.
Model installation: In Longueuil, we installed a Fujitsu KZAH central heat pump paired with a Wi-Fi thermostat for a tech-savvy homeowner. The automatic adjustments based on their routines resulted in a 17% reduction in annual consumption.
Schedule an annual professional maintenance with AirGreen
Even if you follow all these tips, only a complete professional maintenance check can guarantee maximum performance and detect invisible issues.
What’s included in our AirGreen maintenance service:
-
Inspection of the motor, electrical connections, and compressor
-
Refrigerant level check
-
Complete cleaning of both indoor and outdoor units
-
Drain line check to prevent water damage
Why do it in the spring? Because it’s before peak season, which means you won’t have to wait if there’s a problem and you can benefit from preferred pricing on preventive HVAC maintenance services.
Common mistakes to avoid each spring
-
Restarting the system without inspection
-
Covering the outdoor unit in summer, which blocks ventilation
-
Using a high-pressure hose to clean, which can damage the fins
-
Forgetting to check the drainage, which could cause water damage indoors
Why trust AirGreen?
At AirGreen, we’ve developed unique expertise in the maintenance and installation of wall-mounted air conditioners, heat pumps, and central systems throughout Montréal, Laval, Longueuil, the South Shore, and the North Shore. Every service call is well-documented, thorough, and adapted to the client’s reality.
We put our on-the-ground expertise to work for your comfort. Every maintenance visit is also an opportunity to advise you on energy optimization, grant eligibility (like Hydro-Québec’s LogisVert program), and potential system upgrades.
Get your HVAC system ready today
Spring maintenance is a small investment that guarantees summer comfort. By following these five tips, you’ll extend your system’s lifespan, boost its performance, and make real energy savings.
Need a full maintenance check for your HVAC system? Trust the certified technicians at AirGreen. We respond quickly, cleanly, and with proven expertise across the Greater Montréal area.