Find the right mini split for your space.
Independent mini-split research - sizing, electrical requirements, real operating costs, and honest comparisons. Every published spec traced to a manufacturer document or AHRI certificate.
Size a room
Turn room dimensions and climate into a sizing range.
Quick BTU check
Use square footage, ceiling height, and insulation for a rough class.
Find matching systems
Filter to systems that publish the specs you need.
Compare models
Put capacity, efficiency, electrical, and warranty data side by side.
Estimate operating cost
Compare cooling and heating electricity cost from SEER2 and HSPF2.
Estimate payback
Compare project cost against annual savings assumptions.
Estimate installation cost
Separate equipment price from labor and job complexity.
Plan the electrical
Check published voltage and circuit requirements early.
Fix a problem
Start with error codes, symptoms, and source-backed next steps.
Buying guides
The best mini splits
Our top picks by category - best overall, DIY, value, efficiency, and cold-climate - each verified against AHRI data.
Mini split buying guide
The six decisions that choose your system, in order - size, climate, zones, voltage, install path, then brand.
How much does a mini split cost?
Honest installed price ranges - equipment versus labor, DIY versus professional, and the costs people forget.
Featured comparisons
MRCOOL DIY vs Pioneer 12k
DIY quick-connect install versus lower equipment price with a qualified installer.
Cold-climate performance
Low-ambient operation, rated heating capacity, and design-temperature fit.
Single-zone vs multi-zone planning
Room coverage, control, cost, and the places a simple room estimate stops.
How we verify
We read the spec sheets so you don't have to. Every number on this site links back to a manufacturer document, AHRI record, or Energy Star listing - and shows you when we last checked it.
Step one
Find the primary source.
Manufacturer documents, AHRI records, and Energy Star listings outrank retailer copy.
Step two
Resolve conflicts.
Conflicting claims are held back until a higher-priority source resolves them.
Step three
Show the verification date.
Heating in a cold climate? Start with systems rated for your design temperature.