Choisir la taille idéale de thermopompe centrale pour votre maison : Guide AirGreen
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Selecting the Ideal Central Heat Pump Size for Your Home | AirGreen

Choosing the Right Central Heat Pump System for Your Home: A Comprehensive Guide by AirGreen

When it comes to HVAC in Montreal, one of the most common questions homeowners ask is, "What size central heat pump system do I need for my home?" This question is crucial because the size of your central heat pump system affects not only your home's comfort levels but also your energy bills and the system's longevity.

Why is Size Important?

The size of your central heat pump system is paramount for several reasons. Firstly, an appropriately sized system will efficiently maintain your home's temperature, providing a comfortable living environment year-round. Oversized systems may heat or cool your home quickly, but they also tend to cycle on and off frequently, leading to higher energy consumption and wear and tear. On the other hand, an undersized system may struggle to maintain the desired temperature, running continuously and using excessive energy.

Factors to Consider

Several factors determine the size of the central heat pump system you need. These include your home's square footage, the local climate, the number of windows, the type and quality of insulation, the home's orientation, and the number of occupants.

Calculating Heat Pump Size

The size of heat pumps is typically measured in tons or BTUs (British Thermal Units). Professionals use a process called a Manual J load calculation to determine the right size for your home. This calculation considers all the factors listed above and more, providing an accurate estimate for the heat pump size you need.

While you can find online calculators to estimate this, we highly recommend consulting with a Montreal HVAC professional like AirGreen for an accurate sizing. This is because home characteristics that aren't factored into generic online calculators can significantly impact the size of the system you need.


Choosing the right size for your central heat pump system is a critical decision that will impact your home's comfort, your energy bills, and the system's lifespan. When in doubt, trust a professional HVAC company like AirGreen to make the right recommendation based on a thorough assessment of your home and your specific needs.

At AirGreen, we are committed to helping Montreal homeowners make informed decisions about their HVAC systems. With our experience and expertise, we ensure that you get a central heat pump system that perfectly fits your home's needs.