How to Configure the Right Mini Split System for Your Comfort

How to Configure the Right Mini Split System for Your Comfort

June 29, 2022

It can be an easy decision to update your old HVAC system – especially if it doesn’t work properly. If you’ve decided to get a new heating and cooling system, you know that the real problem comes after. How do you decide what system to choose in the sea of HVAC products? We might be able to help with that, thanks to our MRCOOL Configurator Tool!

This tool is the key to planning out how the DIY MRCOOL Mini-Split system works in your home. It’s able to help you decide how many zones you want to heat and cool. It’ll also show you the general sizes that various units are typically able to cover. Let’s walk through it.

When you reach the MRCOOL home page, scroll down a little. The configurator should be located about midway down the main page. You’ll see a phrase in brackets that says “Configure Your 3rd Gen MRCOOL® DIY® System.” Click on that, and a window will pop up.

The next step is easy. Just choose the number of zones you want to heat and cool. If you need something like three small bedrooms cooled and heated, select the 2-3 zone option. This selects the 27k BTU condenser. When you click this option, the window will change, and you’ll be able to select the air handlers you need.

When it comes to this specific condenser, the 27k BTU unit, you can choose air handlers that equal up to a 36k BTU capacity, but you cannot have less than 18k BTUs, because the system needs to meet a certain BTU capacity to function appropriately. You will also need to choose at least two air handlers. If you just need one air handler, then you can find sizing for the single-zone systems on the previous window.

The 27k BTU condenser is compatible with a 9k BTU air handler that typically covers around 375 square feet, a 12k BTU air handler that can handle about 350-550 square feet, and an 18k BTU air handler that’s equipped to cover around 550-800 square feet. Remember that choosing the right system might depend on a number of outside factors, including the climate you live in, the quality of your space’s insulation, and the amount of sun exposure your space receives.

Once you select the air handlers you need, it’s time to move on to choosing your line sets! The 27k BTU condenser’s maximum overall line set length is 197 feet, but the maximum line set length per air handler is 75 feet. You’ll need to choose a line set for each air handler that you have, and the lengths you can choose are 16 feet, 25 feet, 50 feet, and 75 feet. The latter two lengths are actually a combination of line sets, as the only increments of pre-charged line sets we offer are 16 feet and 25 feet! The 50 foot and 75 foot selections will include additional line sets and Quick Connect coupler kits, which allow you to link two pre-charged line set per coupler kit!

Once you’ve decided on the line sets you want, move on to the next page, and you’ll receive the model number of the system you created! This page also features the model numbers for every component in the bundle. You can copy this model number, as well as the list of items that make up the bundle, so that you can find the exact system you need!

Using the MRCOOL Configurator can be the first step in clarifying what our multi-zone DIY ductless mini-split systems can do, and it helps you decide what you need. The configurator can help you achieve complete comfort with the click of a button!

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