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Installer son climatiseur soi-même ou faire appel à un pro : le cas d’une maison à Laval
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Installing Your Air Conditioner Yourself or Hiring a Pro: The Case of a Home in Laval

A decision not to be taken lightly: a real-life example of a professional installation in Laval

When summer hits Laval, many homeowners start thinking about installing a wall-mounted air conditioner to enjoy optimal indoor comfort. At that point, a very common question arises: should you install your air conditioner yourself or call in a professional? At AirGreen, we recently had the chance to put this dilemma to the test during a HVAC installation in a single-family home in the Fabreville neighbourhood of Laval. This project perfectly illustrates the stakes, risks, and most importantly, the real advantages of having a professional handle your residential air conditioning system.

A Laval home facing the heatwave: an urgent need for cooling

The owner of this typical Laval suburban house contacted us in mid-June, right in the middle of a heatwave. He had purchased a Gree Lomo 18,000 BTU wall-mounted air conditioner online, planning to install it himself. After a few hours spent watching tutorial videos, he quickly realized how complex the task really was, particularly when it came to:

  • Refrigerant line connections

  • Drilling through a load-bearing wall

  • Vacuuming the refrigerant circuit

  • Complying with electrical code

  • Qualifying for grants offered in Laval

Faced with these challenges, he decided to call in our team for a safe and compliant professional installation.

Technical details of the Gree Lomo 18,000 BTU wall-mounted air conditioner installation

The selected unit, the Gree Lomo 18,000 BTU, is well known for its reliability, quiet operation, and excellent price-to-performance ratio. It also meets the energy efficiency requirements of Hydro-Québec’s LogisVert program, making the homeowner eligible for a grant of up to $1,704 — as long as the unit is installed by a certified contractor like AirGreen.

Here are the key highlights of our work:

  • Installation time: Full one-day project

  • Tasks completed:

    • Wall bracket installation with reinforcement

    • Precision drilling through an exterior brick wall

    • Refrigerant line brazing using nitrogen

    • Full system vacuuming and leak testing

    • Electrical hookup to the main panel with a dedicated breaker

    • Start-up and performance verification

  • Final result: Indoor temperature held steady at 22°C despite 34°C outside, with virtually no noise.

The risks of DIY installation: what tutorials won’t tell you

The homeowner told us he had underestimated the technical challenges of this type of installation. Here are just a few common problems that occur with non-professional setups:

  • Refrigerant leaks due to poor flare connections

  • Excessive condensation leading to water infiltration in walls

  • High energy consumption caused by undersized wiring

  • Loss of manufacturer warranty if installed without certification

  • Ineligibility for grants such as those from Hydro-Québec

By trusting AirGreen with the project, the client benefited not only from an optimized installation, but also from complete warranty coverage, long-term savings, and true peace of mind.

Grants and energy savings: a major factor in Laval

One of the biggest advantages of professional installation in the Laval region is access to significant financial aid. In this particular case, our team took care of:

  • Confirming eligibility for the LogisVert program

  • Preparing all supporting documentation

  • Submitting the file to the appropriate government program

Thanks to our support, the client saved over $1,700 on the total cost of the project — savings that would have been lost with a non-certified installation.

Why choose AirGreen for your air conditioning projects in Laval and surrounding areas

At AirGreen, we know that an HVAC installation project isn’t just about mounting a unit on the wall. It’s a strategic investment that improves comfort, reduces energy costs, and adds value to your property. We serve all of Laval, as well as Montréal, Longueuil, the North Shore and South Shore, with a fully personalized approach:

  • Accurate needs assessment

  • Selection of top brands: Gree, Fujitsu, Goodman, Bosch, and more

  • Certified and experienced installers

  • Fast and reliable after-sales service

  • Full support with government grants

Conclusion: install it yourself or hire a pro?

The example of this Laval home makes the answer clear: hiring professionals like AirGreen is the best decision you can make for a safe, efficient, and cost-effective installation. The upfront cost of qualified labour is quickly offset by:

  • A longer-lasting system

  • Optimized energy performance

  • Lower electricity bills

  • Access to government grants

  • Full warranty on equipment and labour

Don’t wait for the next heatwave to hit. Start planning your wall-mounted air conditioner project with AirGreen today, your trusted HVAC partner in Laval and throughout the Greater Montréal area.

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