Bad decisions, big regrets: what our clients learned the hard way
At AirGreen, we’ve helped hundreds of homeowners in Montréal, Laval, Longueuil, the North Shore, and the South Shore throughout the process of selecting and installing wall-mounted heat pumps. While the majority of our clients are now thrilled with their heating and cooling systems, some experienced costly mistakes before calling on us. In this unique article, we share real-life testimonials, practical tips, and the lessons learned from true experiences—so you can avoid making the same missteps when purchasing and installing your wall-mounted heat pump.
Mistake #1: Choosing an undersized unit to save money
“I thought I was saving money by picking a lower-capacity unit… In the end, my home never heated properly during winter.” — Marc, Rosemère
One of the most common traps is trying to reduce costs by selecting a wall-mounted heat pump with a lower output than what the home actually needs. An undersized unit runs constantly, uses more electricity, and wears out faster. At AirGreen, we carry out a complete thermal analysis of your home to recommend the correct BTU capacity.
Mistake #2: Buying online without professional installation
“I bought my wall-mounted heat pump online and hired a general handyman for the installation. After one winter, I had to redo everything with AirGreen.” — Sophie, Saint-Hubert
This type of scenario is all too common. A poorly done HVAC installation can lead to:
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lower energy efficiency,
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unusual noise,
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frequent breakdowns,
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voided manufacturer warranty.
We strongly recommend entrusting both the purchase and installation to a certified professional. Our teams install according to manufacturer standards to ensure system longevity.
Mistake #3: Ignoring available rebates
“I found out too late that I could’ve gotten over $1,500 in rebates… If I had known, I would’ve picked a different model.” — Guillaume, Longueuil
In and around Montréal, several programs are available, such as Hydro-Québec’s LogisVert program, which offers up to $2,172 depending on the model of your wall-mounted heat pump. At AirGreen, we guide you from the very beginning to:
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verify your eligibility,
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select qualifying models,
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maximize your financial incentives.
Mistake #4: Skipping regular maintenance
“My heat pump was less than two years old and it had stopped heating. Turns out, the filters were completely clogged.” — Amina, Laval
A wall-mounted heat pump requires annual maintenance to maintain peak performance:
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cleaning filters and coils,
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checking electrical connections,
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inspecting the compressor and refrigerant levels.
We offer HVAC maintenance packages at competitive prices, tailored to each season and ensuring your unit’s maximum lifespan.
Mistake #5: Focusing only on the upfront price
“I went with the cheapest option. After two winters, I had to replace the control board, the fan motor, and the thermostat.” — Paul, Montréal
The initial purchase price matters, but it’s not everything. Other key factors affect long-term value:
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energy efficiency ratings (SEER and HSPF),
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brand reliability,
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quality of after-sales service,
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warranty coverage.
At AirGreen, we recommend trusted brands like Gree, Fujitsu, Sharp, Midea, and Bosch, whose components are dependable, easy to source, and come with solid warranties.
Case Study: Before and After for a Client in Terrebonne
Before contacting us, Martin had a 9,000 BTU heat pump installed in a 1,200 sq. ft. house by a non-specialist contractor. The result: heat never reached the upstairs and his electric bill doubled. We:
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performed a complete thermal evaluation,
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replaced the unit with an 18,000 BTU Gree Extreme,
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repositioned the unit for optimal airflow.
Today, Martin heats and cools his entire home comfortably with 28% lower energy use—and even received a $1,704 rebate.
Practical tips from AirGreen to avoid these mistakes
To make the right choice and get the most from your investment:
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Consult an HVAC specialist before any purchase.
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Request a thermal analysis of your home.
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Choose an energy-certified model.
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Check your eligibility for available rebates.
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Hire a certified company like AirGreen for installation.
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Schedule annual maintenance with trained experts.
Why AirGreen is the trusted choice in Montréal and surrounding areas
At AirGreen, we don’t just sell wall-mounted heat pumps — we support every customer from start to finish. Our reputation is built on:
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over 15 years of HVAC installation experience,
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thousands of units installed in Montréal, Laval, Longueuil, the North Shore, and the South Shore,
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a professional, certified, attentive team,
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fast, reliable, and friendly after-sales service.
We turn yesterday’s mistakes into lasting comfort for today and tomorrow.