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Air Handler BTU

  • Determine the square footage of the area you want to cool or heat.
  • Consider insulation and climate. If the room has poor insulation or is in a particularly hot or cold climate, you might need a higher BTU rating to compensate.

Coverage Area:

  • 900 BTU | up to 375 SqFt
  • 12,000 BTU | 350 – 550 SqFt
  • 18,000 BTU | 550 – 800 SqFt
  • 24,000 BTU | 800 – 1050 SqFt
  • 36,000 BTU | 1050 – 1550 SqFt
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Ceiling Cassette only comes in 9K, 12K and 18K

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This is the distance between the indoor unit (air handler) and the outdoor unit (condenser).

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Zones

A zone makes up an area that you'd like to cool and heat. Generally, a zone is equivalent to an area that is enclosed, such as a kitchen, living room, bedroom or garage.

Build Your MRCOOL DIY Mini Split

Heat & Cool up to 5 Rooms!

How many rooms or zones do you have?
Learn more about Zones
Select the square footage, mount type and lineset length per room/zone Your zone/room square footage
 Add Room/Zone
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Select additional accessories to complete your system
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Customize Your HVAC System with the Mini Split Multi-Zone Customizer | 2 to 5 Zones

Design a personalized HVAC system that fits your home’s unique needs with our Mini Split Multi-Zone System Customizer! With this powerful tool, you can easily mix and match ceiling cassettes and wall-mounted air handlers to create a tailored heating and cooling solution.

The best part?

You can run everything off a single outdoor multi-zone condenser, making installation and operation more efficient and cost-effective.

Choose from 2-zone, 3-zone, 4-zone, and even 5-zone systems, giving you the freedom to create independent climate control for multiple rooms or floors. Whether you need to cool just a couple of rooms or an entire house, our customizer has you covered.

Select your desired line set length for each zone, and we’ll automatically include the appropriate control wire length, ensuring your installation is smooth and hassle-free. With a few simple clicks, you can design the perfect system for year-round comfort and energy efficiency.

*Control Wire Is Included With The Line Set Length You Choose

Explore our Mini Split Multi-Zone System Customizer today and take full control of your home’s climate, all while enjoying the convenience and flexibility of MRCOOL DIY solutions!