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Last modified: 2021-10-26 | Approximate reading time 5 mins
The purchase of a heat pump is often done with the aim of saving energy and watching heating and air conditioning bills plummet.
However, several factors interfere with the achieved degree of savings, including your regional climate, the performance of the additional heating system as well as the power of the heat pump. All these points should be analyzed before embarking on a heat pump purchase project.
On average, a heat pump can save 20% in heating costs. However, such savings include using this device properly, with the required maintenance and protection.
As you know, a heat pump doesn’t produce heat, its operation consists of extracting heat from the outside air and transporting it inside the house. Therefore, it’s the temperature of the outside air that determines the heat pump's ability to draw heat into the house. For this reason, a heat pump cannot stand on its own during very cold weather. It must be combined with another heating system (electric baseboards, oil or gas).
Thus, it’s impossible to rely solely on the heat pump to ensure sufficient and constant heating when the temperature drops below -15 degrees Celsius. In other words, energy efficiency is only possible if the temperature doesn’t drop below this level.
Aside from what was mentioned above, several factors tend to put the energy savings generated by the purchase of a heat pump into perspective. Therefore, it must be highlighted that the performance of the heating system, as well as that of the heat pump, will greatly influence your energy bills. In this regard, the seasonal heating coefficient of performance (CPSC) is a key factor to include in the analysis.
While the Seasonal Energy Efficiency Rate (SEER) is important in countering the intense heat of summer (a measure of the efficiency of an air conditioning system), our climate should push us to pay more attention to CPSC.
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In order for the device to be the source of energy savings, it’s also necessary to carefully select the right size. As pointed out by Natural Resources Canada, "an air-source heat pump should be sized to provide no more than 125% of the cooling load". The validity of this claim depends on the fact that a heat pump whose size is selected because of its heating capacity would be too powerful compared to the cooling needs. As a result, it’ll be used intermittently during summer and its performance will then be affected.
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If you want to enjoy Energy Star performance, choose a heat pump with a seasonal rate of return of at least 12 for a monobloc type unit or 13 for a split type unit. To be Energy Star certified, a CPSC rating of 8 is required for the monoblock appliance and a CPSC rating of 8.2 is required for the split appliance.
It’s also strongly recommended to install a furnace filter to maximize its efficiency and to avoid affecting the energy efficiency of your new heat pump. Finally, the price of heating and electricity will be additional factors to consider.
On another note, we shouldn’t overlook the need to properly assess the insulation quality in your home. Even a very efficient heat pump won’t be able to counter the harmful effects resulting from poor insulation.
Keep in mind that some seemingly unimportant details can also affect energy saving. Among these, let us first mention defrost activation. If it’s activated by a timer, the system will run even in the absence of frost, resulting in completely unnecessary energy consumption. Therefore, it’s preferable to opt for a system that operates on-demand.
Surprisingly and relevant to know, the location of the heat pump will have a significant influence on its performance. In fact, a heat pump that’s exposed to the sun can increase its efficiency by about 30%, which is a significant percentage.
Photo: Deposit Photo
With regular maintenance, the life of a heat pump can reach 10 to 15 years. To make this investment profitable, it should be properly maintained to maximize its lifespan. During the summer and winter, your heat pump must be clear to promote air circulation; no obstacle should obstruct air circulation.
To protect the heat pump against ice and snow that can fall from your roof, it’s better to install a cover designed by the manufacturer, rather than embarking on the construction of a shelter that won’t necessarily be suitable or fitting for the device’s operation. However, if ice has formed around the heat pump, absolutely avoid breaking it with various objects. Instead, go about it the gentle way by melting the ice with hot water because this type of device is quite fragile.
A good idea would be to inspect the heat pump before each start of the winter period by following the following steps:
The installation of an improperly completed heat pump can greatly affect its performance, so the same care must be taken in choosing the person to install the heat pump. To make a wise choice in this matter, make sure that the installer is a member of the Corporation des maîtres mécaniciens en tuyauterie du Québec or that they hold a license 15.9 or 15.10 from the Régie du bâtiment du Québec.
RenoQuotes.com can help you get quotes for your heat pump project. If you submit your project to us, we’ll put you in contact with top-rated contractors. Fill in the form on the homepage (it only takes a few minutes), and you will get estimates from trusted professionals.
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