Heating with gas by Canada. Office of Energy Efficiency

By Canada. Office of Energy Efficiency

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Domestic water heaters are the second largest individual users of energy in most Canadian houses, after the space heating system. Depending upon the house type and on the number and lifestyles of the inhabitants, hot water consumption may account for more than 20 percent of total annual energy consumption. When compared with electricity, one of the principal advantages of a gas-fired water heater is its cheaper operating cost. The overall efficiency of a gas-fired water heater is measured by the energy factor, which takes into account standby losses, combustion system efficiency and recovery efficiency.

If you know your actual heating costs and the type of heating system you have, you can modify the heating load originally taken from Table 4 to suit your specific house. 18/m3. 5 MJ/m3 (see Table 3). 5 ␹ 120 ␹ 100 000 = $600 96 If you would like to compare this heating cost with that of other types of heating systems or energy sources, replace the numbers in the formula with the appropriate ones for your comparison using Tables 2 and 3. 54 You cannot shop for a furnace the way you shop for a camera or a pair of shoes.

Domestic water heaters are the second largest individual users of energy in most Canadian houses, after the space heating system. Depending upon the house type and on the number and lifestyles of the inhabitants, hot water consumption may account for more than 20 percent of total annual energy consumption. When compared with electricity, one of the principal advantages of a gas-fired water heater is its cheaper operating cost. The overall efficiency of a gas-fired water heater is measured by the energy factor, which takes into account standby losses, combustion system efficiency and recovery efficiency.

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