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Heating - FAQ

  • Should I have a heating system with more output capacity?

More output capacity is not synonymous with efficiency. If your unit is too powerful, it will stop and start over more often, which means it will consume more energy, cost you more and even lead to discomfort.

However, output capacity should be considered because a new system will be more energy efficient. You need the unit to provide the quantity of heat required to ensure comfort in cold temperatures.

By being more energy efficient, your system will help you consume less energy while supplying the same quantity of heat.

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  • What type of output capacity should my heating system have?

The system’s output capacity (generally expressed in BTU/h or kWs) must be consistent with the real heating needs of your home.
It is impossible to determine the real required capacity of the heating system without relying on calculations.

The calculation mainly evaluates the heat loss of the home in order to establish the required capacity of the heating system. The calculation must be based on CAN/CSA F-280 standard known as Determining the Required Capacity of Residential Space Heating and Cooling Appliances.   

Many variables must be considered:

  • surface area and volume of the home;
  • layout and orientation of the home;
  • geographical location;
  • type of construction;
  • insulation and air/water tightness levels;
  • size, type and orientation of windows;
  • etc.

It is important to mention that the calculations used nowadays have been improved and do not solely take into account heat loss but also consider recent climate data. Computerized simulation tools are also increasingly used. Do not hesitate to ask questions and request a copy of these calculations.

To adequately calculate your heating needs, ask for a heating professional that is certified by the Corporation of Master Pipe Mechanics of Quebec (CMMTQ). We suggest that you call on more than one professional to help you verify and validate the results.

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  • What is dual energy?

Dual energy consists in combining two sources of energy to supply a heating system.
Electricity is usually used as the main source and fuel oil or gas as the auxiliary source. Electricity is used during the major part of the heating season and auxiliary heating (fuel oil or gas) automatically takes over when temperatures drop (-12 ºC or -15 ºC according to the region). Users can take advantage of better rates, such as the Rate DT offered by Hydro-Québec. This preferential rate also applies to the entire electricity consumption of your home.
The main advantages of dual energy are that while you can enjoy a reduced rate and play a part in reducing greenhouse gas emissions, dual energy also leads to the optimal management of the Quebec hydroelectric network by reducing the intensity of the need during periods of peak demand in cold temperatures.

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