There’s a lot of misunderstanding around how a ductless heat pump works.
Some homeowners still believe that air is actually moved from outside to inside through a hole in their house.
We want to give you the basics of how the refrigerant cycle works in a heat pump so that you can better understand:
- Why heat pumps are so darn efficient
- Why they are reliable (especially Daikin models)
Let’s get started.
Just Like Your Fridge
Your fridge operates just like a heat pump, except only in one direction.
Heat is absorbed from inside the freezer section of your fridge and absorbed into a refrigerant.
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A compressor pumps the refrigerant to a condenser coil which is usually behind or under your fridge. There the heat is released into the surrounding air, and the cycle starts again.
With a heat pump, the same system occurs.
Outside, heat is absorbed into the refrigerant, even as low as -20°C below.
The refrigerant is pumped through the compressor to the indoor heat pump unit where the fan blows over the coil, and the heat is extracted into your room.
What about Cooling Vs Heating?
When you put your heat pump on air conditioning mode the opposite occurs. Heat is absorbed inside the house and transferred to the outside and blown away by the outdoor fan.
As a by-product of this process, humidity in the air condenses on the inside refrigeration lines and drains outside as well. This is why the air not only becomes cooler, but also your heat pump acts as a dehumidifier.
Importance of Quality
There are only a handful of parts in a heat pump.
- Reversing Valve
- Expansion Valve
- Refrigerant lines
- Control boards
Of all these parts, the compressor is the most expensive to repair or replace.
Daikin uses what is called a swing compressor vs a piston compressor that they also manufacture themselves.
The swing compressor is quieter and generally more reliable than other styles of compressors used in ductless air-to-air heat pumps.
Want a quote to install one of the most reliable and efficient heat pumps available in Nova Scotia? Give us a call 902-530-5002, or submit the sidebar form on this page today.