Mini-Splits
Ductless heating and cooling — including DIY systems you can install yourself and save thousands.
Recommended by Rehman Ali, EPA 608 Universal Certified HVAC technician.
Mini-split (ductless) systems are the fastest-growing way to heat and cool homes without ductwork. They're efficient, quiet, and zone-controllable — and DIY-friendly models like the MRCOOL DIY series let handy homeowners skip the contractor bill entirely. Our guides cover sizing (BTUs), efficiency (SEER2), single vs. multi-zone setups, and which units are genuinely worth your money.
All Mini-Splits Articles
Every guide and review below, tagged by what matters most to you.
Best Ductless Heat Pump System: 3 I'd Install in 2026
A working HVAC technician's picks for the best ductless heat pump system in 2026 — compared by price, value, and efficiency, with honest buying advice.
Best DIY Mini-Split Systems for 2026
The top do-it-yourself ductless mini-splits you can install without a contractor — ranked by value, efficiency, and ease of installation.
What Size Mini-Split Do I Need? (BTU Sizing Guide)
A simple guide to sizing a ductless mini-split correctly. Learn how many BTUs you need by room size, plus the factors that change the math.
MRCOOL DIY 4th Gen Review: Is It Worth It?
An honest, in-depth review of the MRCOOL DIY 4th Gen ductless mini-split — installation, performance, efficiency, noise, and whether it's worth the price.