Single Zone Mini-Splits

Single zone DIY mini splits heat and cool one room — bedrooms, garages, additions, and home offices from 450 to 900 sq ft. Every Zone Air® system here is true DIY: the R454B lineset comes pre-charged with quick-connect fittings, so installation needs no vacuum pump, no refrigerant handling, and no EPA certification.

Choose 115V models (9K and 12K BTU) to run on a standard household circuit, or 230V models (9K, 12K, and 18K BTU) for up to 24 SEER2 efficiency. All wall-mount units heat down to −13°F and include WiFi app control. Prices start at $1,899.99.

Not sure which brand to trust? See how Zone Air stacks up in our guide to the best DIY mini split heat pump brands for 2026. Cooling more than one room? Read the best DIY multi-zone mini split systems for 2026. Deciding between 12K 115V brands? Read our DIY 12,000 BTU 115V mini split comparison (MRCOOL vs Pioneer vs Senville vs EG4 vs Zone Air). Installing one yourself? Read our pre-charged 12K and 18K DIY mini split installation guide before you order.
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