18K BTU Mini-Split Systems

18,000 BTU mini-split systems are sized for larger rooms and open spaces up to around 750 sq ft — ideal for master bedrooms, large living areas, sunrooms, or garages. Browse MRCOOL 18K BTU systems including DIY-installable options with pre-charged Quick Connect® line sets for contractor-free installation and efficient year-round comfort.

6 products
6 products
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MRCOOL® DIY® 5th Gen 18K BTU 3-Zone Mini Split System with 3 × 9K Air Handlers 230V MRCOOL® DIY® 5th Gen 18K BTU 3-Zone Mini Split System with 3 × 9K Air Handlers 230V

3 Zone18K BTU

MRCOOL® DIY® 5th Gen 18K BTU 3-Zone Mini Split System with 3 × 9K Air Handlers 230V

$3,967.00
$3,967.00 -18%
$4,849.00
MRCOOL® DIY® 5th Gen 18K BTU 2-Zone Mini Split System with 2 × 9K Air Handlers 230V MRCOOL® DIY® 5th Gen 18K BTU 2-Zone Mini Split System with 2 × 9K Air Handlers 230V

2 Zone18K BTU

MRCOOL® DIY® 5th Gen 18K BTU 2-Zone Mini Split System with 2 × 9K Air Handlers 230V

$3,163.00
$3,163.00 -17%
$3,849.00
MRCOOL® EasyPro® 5th Gen 18K BTU Mini Split System 230V MRCOOL® EasyPro® 5th Gen 18K BTU Mini Split System 230V

Single Zone18K BTU

MRCOOL® EasyPro® 5th Gen 18K BTU Mini Split System 230V

$1,827.00
$1,827.00 -20%
$2,283.75
MRCOOL® DIY Easy Pro™ 18K BTU Ductless Mini-Split Heat Pump System MRCOOL® DIY Easy Pro™ 18K BTU Ductless Mini-Split Heat Pump System

Single Zone18K BTU

MRCOOL® DIY Easy Pro™ 18K BTU Ductless Mini-Split Heat Pump System

$1,806.00
$1,806.00
MRCOOL® DIY® Hyper Heat 18K BTU Mini Split System 230V MRCOOL® DIY® Hyper Heat 18K BTU Mini Split System 230V

Single Zone18K BTU

MRCOOL® DIY® Hyper Heat 18K BTU Mini Split System 230V

$3,099.00
$3,099.00
MRCOOL® DIY® 5th Gen ENERGY STAR® 18,000 BTU Single-Zone Mini Split Complete System with 25 Ft. Line Set – 230V (DIY-18-HP-WM-230D25-O) MRCOOL® DIY® 5th Gen ENERGY STAR® 18,000 BTU Single-Zone Mini Split Complete System with 25 Ft. Line Set – 230V (DIY-18-HP-WM-230D25-O)

Single Zone18K BTU

MRCOOL® DIY® 5th Gen ENERGY STAR® 18,000 BTU Single-Zone Mini Split Complete System with 25 Ft. Line Set – 230V (DIY-18-HP-WM-230D25-O)

$2,609.00
$2,609.00 -10%
$2,909.00

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