Mini Split Heat Pump Installation DIY

Mini split heat pump installation DIY is easy and can save you a huge amount of money. Ductless systems consist of two primary parts: the outdoor condenser, which contains the compressor, and the indoor unit that handles the air. The indoor and outdoor sections are linked by refrigerant tubing, a condensate drain, suction tubing and power. They are commonly used in multi-family housing units where small apartments or room additions are being built. This system is ideal when installing or extending ductwork is not possible, such as to a man cave located in a basement. They offer various pros and cons, which we’ll cover below.

DIY Heat Pump Ltd is Canada’s leading reseller of Mr Cool and other DIY heat pump products. Unlike other companies we carry many items in stock, so no waiting weeks for delivery.  Want to see how we did it – watch our own installation videos here.


Mini split heat pump installation DIY is a great option in the following respects:

  • No ductwork-related energy losses: Mini-splits don’t require ductwork, so they do not experience the energy losses that forced-air systems do.
  • Lots of design flexibility: You can hang a mini-split on your wall, mount it flush into a drop ceiling or suspend it from your ceiling.
  • Customizable settings: You can zone mini-split systems, with some models having up to four air handling units indoors that are connected to a single outdoor unit. There is a separate thermostat for each indoor unit, meaning each zone can be conditioned to different settings. This also means unoccupied zones don’t have to be warmed or cooled, which is a big energy and money saver.
  • Quiet operation: Mini-split systems tend to make little noise when operating.
  • Security: Mini-split systems only need a tiny hole bored through a wall, so unlike window-mounted units, a mini-split system will not make your home more vulnerable to intruders.
  • Subtle appearance: Mini-splits are small and often do not stand out in a room.


Depending on your application, however, mini-splits may have a few limitations:

  • Requires careful planning:  Mini-split system need to be sized correctly – so due care and attention is required.
  • Cost: Mini-split systems cost a bit more than conventional forced-air equipment.



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