With summer temperatures climbing higher every year, more and more households in Montréal, Laval, Longueuil, as well as in areas of the North Shore and South Shore, are relying heavily on their air conditioning systems. At AirGreen, we understand how quickly this can lead to a significant increase in your electricity bill. That’s why we’re sharing five practical, concrete, and often overlooked tips, based on our field expertise, to help you significantly lower your energy consumption during the summer months—while still keeping your home comfortably cool.
Preventive maintenance: a cost-saving solution too often ignored
A poorly maintained air conditioning system runs less efficiently. This means it has to work harder to produce the same amount of cooling, using more electricity in the process. At AirGreen, we recommend an annual HVAC maintenance that includes:
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Thorough cleaning of filters (at least every 3 months during summer)
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Checking refrigerant levels
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Cleaning the coils of both the indoor and outdoor units
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Inspecting for air leaks or damaged ductwork
Our teams regularly perform this service in Montréal and throughout the North Shore and South Shore, where clogged systems are often responsible for up to 30% more energy consumption during heat waves.
Smart programming of your heat pump or air conditioner
Too many customers still use their air conditioning system like a simple ON/OFF switch. However, optimizing your settings can lead to significant savings. Here are some settings we recommend:
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Maintain indoor temperatures between 24°C and 26°C during the day
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Activate the ECO mode or “energy-saving” mode (available on most modern units like the FUJITSU KZAH R-32 or Gree Sapphire)
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Use a smart thermostat, programmable remotely via a mobile app
These simple adjustments can often result in up to 15% savings on your monthly bill.
Focus on active areas: zoning, a powerful concept
More and more homeowners are opting for zoned HVAC installations, which allow them to cool only the rooms they use. During a recent installation in Boucherville, on the South Shore, we installed a multi-zone Gree Lomo heat pump serving the living room and bedrooms separately. The result: the client saw her summer energy consumption drop by 27% in just one month, without sacrificing comfort.
Zoning is especially useful in large two-storey homes or multiplexes where certain rooms remain unoccupied for hours at a time.
Optimize thermal insulation: air conditioning starts with the building envelope
Even the most efficient air conditioning system is ineffective if your home lets in too much heat. During our inspections in Laval and Repentigny, our technicians often identify air leaks or poorly sealed areas around windows, doors, and vents.
A few effective recommendations:
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Install weather stripping around doors and windows
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Use thermal curtains or sun shades during the hottest hours
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Insulate your attic or sun-exposed exterior walls
These steps reduce heat entering your home and lessen the workload on your air conditioner.
Invest in a high-efficiency HVAC system
Finally, the best long-term solution for lowering your bills is often to upgrade your HVAC equipment. New generations of wall-mounted or central heat pumps consume up to 40% less electricity than models from 10 years ago.
Example: we recently replaced an old central air conditioner with a central Bosch BIVA IDS Premium R-454B heat pump in a single-family home in Blainville. Thanks to its variable-speed compressor, this unit reduced consumption noticeably while delivering better comfort. Plus, the customer qualified for the LogisVert grant from Hydro-Québec, receiving a $5,000 subsidy.
Customer case in Longueuil: when a simple tune-up changes everything
A customer in Longueuil, frustrated by rising Hydro-Québec bills, contacted us for an inspection. On-site, we found that her wall-mounted heat pump was clogged, her ductwork poorly sealed, and her thermostat improperly set. After applying the tips above, she saw her monthly bill drop by $94 during the summer months.
Extra tips to go even further
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Avoid using appliances (dryer, oven) during the day
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Circulate air with ceiling fans to better distribute cool air
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Keep blinds and curtains closed during peak sunlight hours
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Check the orientation of your outdoor unit, avoiding direct sun exposure
Why choose AirGreen to help you?
With hundreds of service calls every year in Montréal, Laval, Longueuil, on the North Shore and South Shore, we’ve become a trusted name in HVAC installation, maintenance, and upgrades. Our approach is based on:
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Certified and experienced technicians
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High-performance equipment (FUJITSU, Gree, Bosch, Goodman, Lennox…)
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A deep understanding of available grant programs
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A transparent, fast, and customer-focused service
In summary
Lowering your air conditioning bill without sacrificing comfort is absolutely possible—if you act wisely. These 5 simple but often overlooked tips can transform your summer experience while saving you hundreds of dollars. At AirGreen, we’re proud to guide you toward sustainable, efficient, and economical comfort. Contact us today for a personalized diagnosis or a free evaluation of your HVAC system.