Heat pump is a system that consists of an outdoor unit and an indoor unit, with two small refrigerant pipes connecting between. A heat pump provides two services and employs the same basic principles for both. Working like an air conditioner on warm days, the pump will extract heat from inside the home and transfer it outdoors. Conversely, on cold days the pump will flow heat energy into the home from the outside.

In cooling mode, a heat pump operates as an air conditioner…

Heat Pump Working Cycle

Above picture depicts how heat pumps work.

  • A refrigerant coil is located inside the indoor air handling unit.
  • Warm indoor air from the return air duct passes through the coil which is filled with cold liquid refrigerant.
  • The refrigerant absorbs heat energy from the air and evaporates into warmer gas form, while the now chilled air is delivered back into the house.
  • The warm gas refrigerant then gets pumped into the compressor located in the outdoor unit which prepares it into a high-pressure, high-temperature state before moving onto the coil in the outdoor unit.
  • Now the temperature of the refrigerant is much higher than the outdoor air. As the outdoor fan blows cooler air across the coil, it also picks up heat energy from the refrigerant, which then condenses into cold liquid form again before transferring to the indoor unit. And the cycle continues.

Mitsubishi Heat Pump

Unlike water which has a boiling point of 100°C, the liquid refrigerant has a much lower boiling point, even lower than the cold outdoor air. This is why in heating mode, the refrigerant can still evaporate in the outdoor coil at low temperatures and draw heat from surrounding air, making the seemingly impossible heating with cold air possible. The now-heated gas refrigerant flows into the indoor coil and extracts the heat into the indoor air. Despite frigid temperatures the air will, unfailingly, contain enough energy to heat the home, even at -30°C.

Energy-efficient. Easy to install. Extremely quiet. Zuba-Central is simply the new and better way to heat and cool your home or small business. Zuba-Central is a Heat Pump which provides heating and cooling to your home through ductwork. It is ranked among the most energy efficient and cost-effective ways of transferring heat from one place to another.

Mitsubishi Zuba Central Heat Pump


Carrier Heat Pump

A smart alternative to an Air Conditioner

Heating, cooling and dehumidifying – heat pumps have it all. Except, perhaps, a name that does their versatility justice. Heat pumps look and function the same as air conditioners for cooling, but in cool months when heat is called for, they reverse operation to provide warmth for your home. If you live in a colder environment, electric-powered heat pumps are great in combination with your oil- or gas-fueled furnace as a Hybrid Heat® solution, which can result in significant savings on your overall heating costs.

Traditionally, heat pumps do not perform well when outdoor temperatures drop below 0°C, even though there is still heat energy out there. These systems need to be matched with a supplementary heating method, which in many cases would be a gas-fired furnace having a much lower efficiency than a heat pump. And since both heat pump and gas furnace cannot operate at the same time, it simply means you are not getting the benefits from a heat pump in winter at all.

Contact Furnace & AC Experts today for reliable Heat Pump installation, service and repairs in Toronto, Mississauga, Brampton, Vaughan, Oakville and complete GTA. We are MEQ certified dealer of Mitsubishi Electric.