Living comfortably with your wall-mounted heat pump also means enjoying peace and quiet. While it’s designed to efficiently heat and cool your space, a noisy wall-mounted heat pump can quickly become an everyday nuisance. At AirGreen, we understand how crucial silence is—especially in a bedroom, living room, or home office. That’s why we’re sharing 5 practical tips, based on our extensive HVAC installation experience in thousands of homes and businesses across Montreal, Laval, Longueuil, the North Shore, and the South Shore, to help you enjoy a quieter and more efficient system.
Why is your wall-mounted heat pump making noise?
Before diving into solutions, it’s important to understand the root cause. A wall-mounted heat pump can make several types of sounds: humming, clicking, vibrating, whistling, or unusually loud airflow. These noises can be caused by a range of issues:
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Improper installation (poor sealing or a poorly secured wall bracket)
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Worn-out or neglected internal components
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Dirty filters or fan
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Poor acoustic insulation around the outdoor unit
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Extreme weather conditions affecting mechanical performance
At AirGreen, we frequently troubleshoot these issues and apply precise fixes to restore comfort.
1. Check the quality of the installation
One of the most common problems we see is poor or careless installation. A unit that’s not securely mounted, placed on a weak wall, missing anti-vibration pads, or connected with uninsulated piping can cause vibrations that echo throughout the room.
Our tip: Always call on a certified installer like AirGreen. We make sure each wall-mounted unit is firmly secured, using anti-vibration materials and optimally positioned on a stable wall. This helps to eliminate vibration transfer and significantly reduce noise.
2. Keep your heat pump regularly maintained
Lack of maintenance is a frequent source of unusual noise. A blocked fan, dirty filters, or a poorly lubricated motor can all cause unwanted background noise.
Our solution at AirGreen: We offer full-service HVAC maintenance, including professional cleaning of the indoor and outdoor units, motor checks, fan blade adjustments, and a complete inspection of all mechanical parts. A yearly tune-up is often enough to restore quiet operation.
3. Replace worn-out or defective components
Over time, parts like motor bearings, vibration dampers, or mounting brackets can wear out or become misaligned. As a result, your heat pump becomes noisy—especially in heating mode.
What we do: AirGreen technicians quickly diagnose faulty parts through detailed inspections. We replace only what’s necessary using genuine components tailored to your specific model. This not only extends the life of your system but also brings back its quiet operation.
4. Improve the insulation of your outdoor unit
Even if your indoor unit is quiet, the outdoor unit can still cause issues—especially if it’s installed too close to a window or reflective surface like a concrete wall.
Our professional tips:
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Install the outdoor unit on an anti-vibration base with rubber dampers
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Place the unit in a sheltered area, away from bedroom windows
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Add an acoustic screen or sound-dampening fence
At AirGreen, we adapt every installation to the specifics of the building and its acoustic environment, whether it’s a densely urban area like Montreal or a quieter residential neighborhood like Laval or the South Shore.
5. Choose a quieter model
If your wall-mounted heat pump remains noisy despite adjustments, the issue may lie in the technology of your current model. Older units or low-end brands can be significantly louder, even when properly installed.
Our AirGreen recommendations: We offer models known for their ultra-quiet performance, such as the Fujitsu KZAH R-32, the Gree Sapphire, or the Sharp ZU1. These units use modern Inverter compressors, brushless motors, and active noise reduction technologies—perfect for sensitive residential environments.
We recently installed an 18,000 BTU Sharp ZU1 in a home in Saint-Lambert. The homeowner had been struggling with excessive noise from her old unit. After our installation and calibration, she told us her sleep was completely transformed.
The result: thermal AND acoustic comfort
A quiet wall-mounted heat pump isn’t just more enjoyable to live with—it’s also a sign of a well-maintained, properly installed, and longer-lasting system. At AirGreen, we go beyond thermal comfort: we aim for discreet, long-term integration, tailored to every residential or commercial setting in Montreal, Longueuil, Laval, the North Shore, and the South Shore.
When should you call AirGreen?
If you hear:
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Frequent clicking when starting up
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A constant humming in heating mode
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Unusual whistling or squeaking
It’s time to have your HVAC system inspected. Our certified technicians respond quickly, using advanced diagnostics and delivering tailored solutions.
In short: keys to a quiet wall-mounted heat pump
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Proper installation with vibration-proof mounting
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Annual professional maintenance
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Fast replacement of worn parts
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Outdoor unit soundproofing
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High-end, certified quiet models
With these adjustments, you’ll fully enjoy your wall-mounted heat pump without the background noise—whether it’s summer or winter.
Trust AirGreen’s expertise
With over 10 years of experience in wall-mounted heat pump installation and maintenance, we serve hundreds of homes and businesses each year in Montreal, Laval, Longueuil, the North Shore, and the South Shore. Our approach is always personalized, meticulous, and focused on customer comfort.
Contact us today for an acoustic inspection or a quote to replace your wall-mounted heat pump. Give your home the comfort it deserves—without compromising on silence.