Place comfort exactly where you need it with our ductless mini-split options. Our DIY® series allows you total control over your HVAC and lets you save hundreds when you install the system yourself.

Explore the MRCOOL DIY 5th Gen mini-split—easy to install, efficient, and designed for true home comfort.

The MRCOOL® Easy Pro® is an efficient and affordable ductless mini-split heat pump system that you can install yourself! This system comes with 16' pre-charged Fast Connection line set that eliminates …

The MRCOOL® Olympus Multi-Zone is a hyper-efficient mini-split system that allows for multiple air handlers to be attached to a single condenser. You can potentially heat and cool your entire home …

Discover MRCOOL's innovative heating and cooling solutions, including ductless mini-splits, heat pumps, and more. Comfort made simple.

Discover the MRCOOL Advantage 3rd Gen mini-split for energy-efficient, easy-to-install heating and cooling.

The MRCOOL DIY® 5th Generation Mini Split is a versatile, energy-efficient heating and cooling solution designed for homeowners seeking a straightforward, do-it-yourself installation.

Need help choosing a system? Try our system selector to help decide on the best DIY® ductless mini-split for you.

In this post, we’ll break down what qualifies as the smallest mini split, how it stacks up against traditional systems, what features matter most, and how to choose the best one for your space.

Jul 30, 2025 · An error code is a way for an HVAC system (like a mini-split or central unit) to communicate that something isn’t working properly. Instead of just shutting down with no …