3 surprising air conditioning breakdowns you can fix yourself in Laval

Practical tips from AirGreen to avoid an unnecessary service call

An air conditioner breaking down doesn’t always mean an emergency requiring a technician. In Laval, many residents can fix common issues themselves — as long as they know what to look for. At AirGreen, we’re sharing our expertise to help you identify and fix three frequent problems on your own, without having to call in a pro.

Your wall-mounted air conditioner won’t start? Start by checking the obvious

It’s common for a wall-mounted heat pump or central air conditioner to appear broken… when in fact, it’s just a simple issue with power or settings. In Laval, we’ve received many calls for this kind of issue — and here’s what we always recommend checking first:

• Check the circuit breaker: it may have tripped due to a power surge or thunderstorm. Locate your breaker panel and reset the one linked to your AC.

• Inspect the remote control: dead batteries or the wrong mode setting can make it seem like the unit isn’t working. Make sure it’s on “cool” mode, and that the temperature is set lower than the room temperature.

• Check the reset button: some units have a reset switch on the outdoor condenser. Hold it down for a few seconds to try a manual restart.

At AirGreen, we’ve found that these quick checks are often enough to avoid an unnecessary service call — especially in Laval neighbourhoods like Chomedey or Duvernay.

Weak airflow could be caused by a neglected air filter

Another common issue we’ve encountered during our service calls in Laval is a clogged air filter. A blocked filter prevents air from circulating properly and can even cause the indoor unit to freeze up. This makes it feel like the air conditioner isn’t cooling, even though the compressor is working fine.

Here’s how to fix it:

1. Turn off your air conditioner.

2. Open the front panel of the indoor unit.

3. Remove the filter and check its condition.

4. Gently clean it with warm water and mild soap.

5. Let it dry completely before reinstalling it.

We recommend that all our Laval clients — whether in Laval-des-Rapides, Sainte-Dorothée or Fabreville — do this at least once a month during peak cooling season. It extends the life of the unit and improves indoor air quality.

Water leaks near your indoor unit? It might be a clogged drain

It can be alarming to see water pooling under a wall-mounted air conditioner. This often happens when the condensate drain line is blocked. The good news is this issue is often easy to fix yourself, as long as you act quickly.

The drain pipe can clog due to:

• A build-up of dust or mold.

• Insects or debris from outside.

• Poor installation angle preventing proper drainage.

To fix it:

• Completely shut off the unit.

• Locate the drain pipe at the back or side of the indoor unit.

• Gently insert a rigid wire or use a wet/dry vacuum (Shop-Vac) to remove the blockage.

• Test with a little water to confirm proper flow.

Our teams in Laval have helped many clients identify this type of minor issue. And in several cases, after a quick cleaning, the system was running like new again.

When should you call an AirGreen expert in Laval?

While these three issues can usually be handled without professional help, it’s essential to recognize the signs of a more serious problem, such as:

• The air conditioner makes unusual noises (clicking, squealing).

• The unit doesn’t respond at all even after a reset.

• There’s a burning smell or melting plastic odor.

• The remote displays a persistent error code.

In those cases, don’t hesitate to contact us. At AirGreen, our expert technicians respond quickly throughout Laval — whether you’re in a downtown condo or a family home in Vimont or Saint-François. Our qualified technicians work on most popular brands, including Fujitsu, Gree, Midea, Lennox and Daikin, and carry out safe, lasting repairs.

Preventive maintenance: the best way to avoid breakdowns

Ultimately, if you want to avoid these hassles altogether, the best advice is to schedule annual maintenance. In Laval, we offer full-service tune-ups for wall-mounted air conditioners, central heat pumps, and multi-zone systems. During this visit, we:

• Clean the filters and coils.

• Check the condensate drain.

• Inspect electrical connections.

• Evaluate energy efficiency.

• Extend your system’s lifespan.

Why trust AirGreen for your air conditioning needs in Laval?

For several years, we’ve helped Laval residents with the installation, repair, and maintenance of their air conditioning and heating systems. Our approach is based on transparency, technical know-how, and attention to detail.

Every job is documented, every client is heard, and every problem is handled with precision and efficiency. We’ve completed hundreds of installations and repairs in Laval, always with one goal in mind: your lasting comfort and satisfaction.

Conclusion

A malfunctioning air conditioner doesn’t always mean an expensive repair. With these practical tips, you can avoid some of the most common issues and optimize the performance of your wall-mounted AC unit on your own. But if the problem continues or seems more complex, our AirGreen experts in Laval are ready to help, with professionalism and speed.