AC Academy
AC Academy
Sizing, install planning, and efficiency guides from our HVAC experts.
Latest guide
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. You’re staring at DIY mini splits and wondering if this is f...
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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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Will a Mini-Split Ceiling Cassette Fit? A Pre-Buy Checklist
Learn whether a mini-split ceiling cassette will fit your joists, ceiling cavity, drain route, line-set path, and service needs before yo...
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How to Measure Mini-Split Line-Set Length (Without Ordering the Wrong Size)
Learn how to measure the real line-set route, choose the next available length, and check refrigerant, fitting, and pipe-size compatibili...
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Daikin ENTRA vs OTERRA vs AURORA: Which Mini Split Should You Buy?
Compare Daikin ENTRA, OTERRA, and AURORA mini splits by climate, efficiency, voltage, warranty, installation needs, and overall value.
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