AC Academy
AC Academy
Sizing, install planning, and efficiency guides from our HVAC experts.
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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Best Temperature for a Mini Split: Summer, Winter, Sleep and Away Settings
Find practical mini-split temperature settings for summer, winter, sleep and vacations, plus simple advice for humidity, fan speed and en...
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How Much Electricity Does a Mini Split Use? A Simple Cost Guide
Learn how mini-split watts, run time, efficiency, weather and electric rates affect operating cost, with a simple formula and monthly cos...
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How Often Should You Clean a Mini Split? A Simple Maintenance Guide
Learn when to clean mini-split filters, check the drain and outdoor unit, and schedule professional service with this simple maintenance ...
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Best Mini Split Brands of 2026: Six Top Brands Compared
Compare Daikin, Mitsubishi, Senville, Pioneer, MRCOOL and Perfect Aire mini splits by installation type, cold-weather performance, produc...
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Do Mini Splits Bring In Fresh Air? Ventilation and Filtration Explained
Learn why most ductless mini splits recirculate indoor air, what their filters actually do, and when a home needs exhaust ventilation, an...
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What Size Mini Split Do I Need? A Sizing Chart by Square Feet
Not sure what size mini split you need? A 500 sq ft room needs about 12,000 BTU. Use the ENERGY STAR chart, adjust for sun, kitchens, cei...
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R-32 vs. R-454B Mini Splits: What Buyers Need to Know
An expert buyer’s guide to R-32 and R-454B mini splits, covering GWP, A2L safety, efficiency, service compatibility, existing R-410A syst...
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