Diagnostic and repair service for heating,
air conditioning, and ventilation systems. Residential and commercial.
An unusual noise? A heat pump that no longer heats? A minor problem can quickly worsen and become costly if not addressed by a specialist.
With MCL Air Conditioning, you benefit from unique expertise honed since 1987. No matter how complex the situation or what brand your appliance is, our certified technicians identify the exact source of the problem and apply the appropriate corrective solution, right the first time.
From Laval to Mont-Tremblant, our reputation is built on honesty. If your appliance is too old and repairing it isn’t worth the cost, we’ll tell you straight up. We always prioritize the solution that’s best for your wallet.
From Laval to Mont-Tremblant, our reputation is built on honesty. If your appliance is too old and repairing it isn’t worth the cost, we’ll tell you straight up. We always prioritize the solution that’s best for your wallet.
Years of experience
and quality
Our experience allows us to carefully analyze damage and correctly identify the source of the problem.
With a full range of specialized tools and equipment, we can select the materials needed for the best results.
Our repair services target the cause of your breakdown or failure to ensure optimal results that will prevent future problems.
Your comfort is our pride. Explore a preview of our recent installations, created with the attention to detail and high quality standards that have made us renowned since 1987.
Small project for a custom commercial BBQ hood in an indoor summer kitchen.
Another project completed in partnership with Ventilation des monts inc. on the Bois Nature general contractor project.
Improved comfort for guests at this magnificent rental cottage on the Laurentian Mont-Blanc golf course
Renovation, new equipment, and installation of two new hoods at Manoir Saint-Sauveur Collaboration on welding work with JCV Welding / JCV Mobile Welding Inc.
Complete unit replacement and new distribution.
Finition de Béton InnovaTech installed a variable speed exhaust system.
Replacement of 5 York 100-ton condenser coil chillers
Clear answers to help you make the right choice
A heat pump should be serviced at least once a year, ideally before the heating or cooling season.
Annual maintenance allows you to clean the filters, check the refrigerant level, inspect the electrical connections, and ensure that all components are working properly. For commercial systems or those used intensively, maintenance every six months is recommended.
Installing a standard residential air conditioning system typically takes 4 to 8 hours for a wall-mounted unit, and 1 to 3 days for a complete central system.
The duration depends on several factors: the type of system chosen, the configuration of your building, access to workspaces, and whether modifications to the electrical system or structure are necessary. For commercial projects, the duration may vary.
A noticeable increase in dust in your space, persistent or unusual odors, increased indoor humidity, unusual noises coming from the unit, or a rise in your energy bills for no apparent reason.
If you notice excessive condensation on your windows, increased allergies among occupants, or that your system seems to be running constantly without maintaining the desired comfort level, professional cleaning is required.
An air exchanger should be cleaned at least every two years, and more frequently in dusty environments or homes with pets.
Yes, modern heat pumps operate efficiently even during Quebec’s harsh winters. Recent models, designed for northern climates, can extract heat from the outside air even at temperatures as low as -25°C to -30°C.
Replacement becomes more cost-effective than repair when your system is over 15 years old, repair costs exceed 50% of the price of a new unit, or you have to make frequent repairs every year.
Other indicators include a steady increase in your energy bills despite regular maintenance, the system’s inability to maintain a comfortable temperature, or if your unit uses R-22 refrigerant, which is no longer manufactured.
Noises coming from a ventilation system can have several causes. A whistling sound usually indicates an airflow problem, often caused by dirty filters or clogged ducts. Clicking or clattering noises suggest loose components, poorly secured ducts, or debris in the fan.
A squeaking noise may indicate that the motor is lacking lubrication or that the bearings are worn. A constant humming noise could indicate an electrical problem or a faulty motor.
If the noise appears suddenly or gradually intensifies, a professional inspection is required quickly to prevent further damage. A well-maintained ventilation system operates quietly and should never produce unusual or disturbing noises.
