Ottawa Heat Pumps


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TIP: Ductless Heat Pumps are a great solution for homes heated with electrical baseboard heating that lack the ductwork system to distribute through a central heating unit.

What is a Heat Pump?

Heat pumps commonly use an outside source of air to evaporate or condense the refrigerant. These are known as air-to-air Heat Pumps. They operate differently in the heating or cooling cycles, reversing the evaporation of the condensing process from indoors to outdoors, transferring the heat. Essentially, they are air conditioners, with the added ability to reverse the refrigerant flow and to the condensing or evaporating cycle. Split air-to-air Heat Pump Systems are comprised of both an outdoor unit, which will collect or discharge heat. A Heat Pump is composed of a compressor, outdoor coil, fan, and reversing valve, all of which are normally located within the outdoor unit. In some instances, compressors are located on a third indoor section of a house.

Most air-to-air Heat Pumps are installed along with an existing secondary, or backup heat source. This secondary heating can be provided by an oil or gas furnace, or a simple air handling unit with electric elements or an additional hydronic coil that can transfer extra heat via a hot water supply.

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Other Types of Heat Pumps

Other types of heat pumps include air to water, ground source or geothermal, which can also be water-to-water. A geothermal water-to-water heat pump uses water or an anti-freeze solution in a closed ground loop as the source to transfer heating or cooling to water, which is then distributed to the home via a hydronic coil and air handling unit.

A significant advantage of all heat pumps is that the direction the refrigerant is pumped through the system determines whether the indoor coils are either hot or cold.

The advanced design and efficiency of today’s Lennox and Mitsubishi ZUBA Central Heat Pumps make them a much better option than Oil or Propane. Even with a Gas Furnace, a “Dual Fuel” system allows the heat pump to operate at times when it is the more efficient heat source, while the Gas Furnace takes over when it may be more suited to do so. The overall energy savings can be significant. Typical savings can repay the small difference between a heat pump and Air Conditioner in a surprisingly short time-frame.

Differences Between Central Heat Pumps and Ductless Heat Pumps...

Central Heat Pump Operation

Connects to Ventilation System

Ductless Heat Pump Operation

No Ducts Required


What you want: Affordable.

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