AC Academy
AC Academy
Sizing, install planning, and efficiency guides from our HVAC experts.
Latest guide
Can a Mini Split Replace Your Furnace?
Thinking of swapping your furnace for a mini split this fall? Learn when it works, when to keep backup heat, and what to plan before you buy.
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Should You Buy a DIY Mini Split in Fall? What to Know About a Cold Weather Install
Thinking about a DIY mini split this fall? Learn why fall is a smart time to buy, how to plan a cold weather install, and what to check f...
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Why Is My Mini Split Blowing Cold Air in Heat Mode?
Switched your mini split to Heat and got cool air, no air, or steam outside? Learn what's normal this fall, what to check, and when to call.
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Can I DIY a Mini Split If I’ve Never Done HVAC? An Honest Checklist
Can I DIY a Mini Split If I’ve Never Done HVAC? An Honest Checklist You’ve never evacuated a line set. You’ve never charged refrigerant. ...
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Why Is My DIY Mini Split Turning On and Off?
Why Is My DIY Mini Split Turning On and Off? Your DIY mini split runs, stops, then starts again a few minutes later. The room never quit...
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DIY Mini Split First Week: What’s Normal (Quiet + Cold Air) vs What Means Fix It
Just installed a DIY mini split? Here’s what to expect in the first week and the warning signs that mean recheck the install or call supp...
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What Size Mini Split Do You Need for a Garage or Workshop?
Choose a garage or workshop mini split using square footage, insulation, ceiling height, climate, door use, voltage, and real installatio...
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What Comes With a MRCOOL DIY Mini Split? A Complete Buying Checklist
See what normally comes with a MRCOOL DIY mini split, what is commonly sold separately, and what to check before placing your order.
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Can You Mix MRCOOL Wall Mounts and Ceiling Cassettes on One System?
Learn when MRCOOL DIY wall mounts and ceiling cassettes can share one multi-zone condenser, plus the compatibility and installation check...
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MRCOOL vs. Mitsubishi Mini Splits: Which Is Better for Your Home?
Compare MRCOOL DIY and Mitsubishi Electric mini splits by installation, cold-weather performance, indoor-unit choices, cost, service, and...
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How Long Do Mini Splits Last? Lifespan, Maintenance and Replacement Signs
Learn how long a mini split may last, what shortens equipment life, which maintenance matters, and how to decide whether to repair or rep...
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Do Mini Splits Need a Surge Protector? A Simple Buyer’s Guide
Learn whether your mini split needs surge protection, what a surge protector can and cannot do, and how to choose the right type for your...
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