Comment une thermopompe murale affecte-t-elle ma facture d'électricité?
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How Does a Wall-Mounted Heat Pump Affect My Electricity Bill?

How Does a Wall-Mounted Heat Pump Affect My Electricity Bill?

Greetings from AirGreen, your trusted HVAC company in Montreal! We specialize in selling and installing wall-mounted heat pumps, also known as mini splits. These versatile units can cool and heat your home, making them an increasingly popular choice for homeowners and businesses in our city.

One of the common questions we receive is: "How does a wall-mounted heat pump affect my electricity bill?" This is an important consideration for anyone contemplating the installation of a heat pump in their home or office. Let's delve into this topic in this unique, comprehensive, and insightful article.

Understanding Wall-Mounted Heat Pumps

Wall-mounted heat pumps or mini splits are a type of HVAC system that can provide both heating and cooling for your property. They consist of an indoor unit that is mounted on the wall and an outdoor unit that houses the compressor. These units are connected by conduits that carry electric lines, refrigerant piping, and a condensate drain.

Heat pumps work by transferring heat rather than generating it. During the winter, they absorb heat from the outdoor air and transfer it inside. Conversely, in the summer, they extract heat from your home and discharge it outside.

Energy Efficiency of Wall-Mounted Heat Pumps

Heat pumps are celebrated for their energy efficiency. Unlike traditional heating systems that generate heat, heat pumps move heat from one place to another. This process requires less electricity, leading to potential energy savings.

The efficiency of a heat pump is often measured in terms of its coefficient of performance (COP). This figure indicates how much heat the unit can produce per unit of energy consumed. Modern heat pumps can have a COP of 3 or more, meaning they can produce three units of heat for every unit of energy consumed. This high energy efficiency can result in significant savings on your electricity bill.

Factors Affecting Heat Pump Electricity Consumption

Several factors can influence how much electricity a heat pump uses, and therefore how it affects your electricity bill.

  1. Size of the Unit: The size of your heat pump should be appropriately matched to the heating and cooling requirements of your property. An undersized unit will work harder and longer to maintain the desired temperature, consuming more electricity. Conversely, an oversized unit will cycle on and off frequently, leading to inefficient operation and higher energy costs.
  2. Insulation: The insulation in your home can significantly impact the efficiency of your heat pump. Good insulation keeps the heat in during the winter and out during the summer, reducing the workload on your heat pump and therefore the amount of electricity it uses.
  3. Outdoor Temperature: The efficiency of a heat pump can decrease as outdoor temperatures drop, as there is less heat in the air for the unit to absorb. However, advances in technology have led to the development of cold climate heat pumps that are designed to work efficiently even when outdoor temperatures drop below freezing.
  4. Maintenance: Regular maintenance is essential to keep your heat pump operating efficiently. This includes cleaning or replacing filters, checking refrigerant levels, and ensuring that coils and fans are clean.

Reducing Heat Pump Electricity Consumption

There are measures you can take to reduce the electricity consumption of your heat pump:

  1. Install a programmable thermostat: This allows you to set different temperatures for different times of the day, reducing the workload on your heat pump when you're not home or when you're asleep.
  2. Use the auto setting: This setting allows the fan to run only when the heat pump is heating or cooling, which can save electricity.
  3. Keep the unit clean: Regularly cleaning or replacing the filters, as well as keeping the outdoor unit free from debris, can improve efficiency and reduce electricity consumption.
  4. Schedule regular maintenance: Professional servicing can ensure that your unit is operating at peak efficiency.


In conclusion, a wall-mounted heat pump, while initially might require a higher investment, can lead to significant savings on your electricity bill in the long run due to its high energy efficiency. It's an environmentally friendly choice that also offers the convenience of both cooling and heating capabilities.

At AirGreen, we understand that each home is unique, and we're committed to providing tailored solutions that meet your specific needs. Trust AirGreen for all your heating and cooling requirements and discover the difference that customer-focused, professional service can make.