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DIY 5th Gen Systems

The MRCOOL® DIY® 5th Generation mini-split is the only ductless heat pump system on the market designed for true do-it-yourself installation — no HVAC license, no vacuum pump, and no special tools required. The patented Quick Connect® line set arrives pre-charged with next-generation R-454B refrigerant, meaning you simply connect the line set and power on. Installation typically takes a few hours rather than a full day.

This collection includes everything you need for a complete single-zone DIY system: condensers (outdoor units), wall mount air handlers (indoor units), complete system bundles, and compatible R-454B line sets in multiple lengths.

Available Configurations

BTU Voltage SEER2 HSPF2-4 Coverage
9,000 115V 23.6 11.5 Up to 350 sq. ft.
12,000 115V 23.5 10.2 350–550 sq. ft.
18,000 208/230V 22.5 11.5 500–750 sq. ft.
24,000 208/230V 22.7 9.5 750–1,050 sq. ft.
36,000 208/230V 18.0 8.5 1,000–1,500 sq. ft.

What’s in This Collection

  • Condensers — Outdoor units sold separately for pairing with any compatible air handler
  • Air Handlers — Wall mount indoor units in 115V and 208/230V configurations
  • Complete Bundles — Condenser + air handler + 25ft pre-charged Quick Connect® line set
  • Line Sets — R-454B line sets in 16ft, 25ft, 35ft, and 50ft lengths with optional DIYPro® cable

Filters

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MRCOOL EasyPro Air Handler Front View
MRCOOL EasyPro 24K BTU 230V Wall Mount Air Handler EZPRO-24-HP-WMAH-230DE-O
$860.47 - $860.47
$860.47
$860.47 - $860.47
$860.47

MRCOOL EasyPro 24K BTU R-454B Single Zone Mini-Split Wall Mount Air Handler 208/230V w/ 13ft Cable EZPRO-24-HP-WMAH-230DE-O

MRCOOL
In stock

The MRCOOL® Easy Pro® 24K BTU 230V Ductless Mini-Split Heat Pump Air Handler delivers powerful, energy-efficient heating and cooling for spaces up ...

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$860.47 - $860.47
$860.47
$860.47 - $860.47
$860.47
MRCOOL EasyPro Air Handler Front View
MRCOOL EasyPro 18K BTU 230V Wall Mount Air Handler EZPRO-18-HP-WMAH-230DE-O
$693.50 - $693.50
$693.50
$693.50 - $693.50
$693.50

MRCOOL EasyPro 18K BTU R-454B Single Zone Mini-Split Wall Mount Air Handler 208/230V w/ 13ft Cable EZPRO-18-HP-WMAH-230DE-O

MRCOOL
In stock

The MRCOOL® Easy Pro® 18K BTU 230V Ductless Mini-Split Heat Pump Air Handler delivers powerful, energy-efficient heating and cooling for spaces up ...

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$693.50 - $693.50
$693.50
$693.50 - $693.50
$693.50
MRCOOL EasyPro Air Handler Front View
MRCOOL EasyPro 12K BTU 115V Wall Mount Air Handler EZPRO-12-HP-WMAH-115DE-O
$614.02 - $614.02
$614.02
$614.02 - $614.02
$614.02

MRCOOL EasyPro 12K BTU R-454B Single Zone Mini-Split Wall Mount Air Handler 115V w/ 13ft Cable EZPRO-12-HP-WMAH-115DE-O

MRCOOL
In stock

The MRCOOL® Easy Pro® 12K BTU 115V Ductless Mini-Split Heat Pump Air Handler delivers efficient, reliable heating and cooling for spaces up to 550 ...

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$614.02 - $614.02
$614.02
$614.02 - $614.02
$614.02
MRCOOL EasyPro Air Handler Front View
MRCOOL EasyPro 9K BTU 115V Wall Mount Air Handler EZPRO-09-HP-WMAH-115DE-O
$588.85 - $588.85
$588.85
$588.85 - $588.85
$588.85

MRCOOL EasyPro 9K BTU R-454B Single Zone Mini-Split Wall Mount Air Handler 115V w/ 13ft Cable EZPRO-09-HP-WMAH-115DE-O

MRCOOL
In stock

The MRCOOL® Easy Pro® 9K BTU 115V Ductless Mini-Split Heat Pump Air Handler delivers efficient, dependable heating and cooling for spaces up to 400...

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$588.85 - $588.85
$588.85
$588.85 - $588.85
$588.85
MRCOOL DIY Line Set Coupler Kit 24K 36K with 75ft DIY Pro Cable R-454B
$541.20 - $541.20
$541.20
$541.20 - $541.20
$541.20

MRCOOL DIY Line Set Coupler Kit 24K 36K with 75ft DIY Pro Cable R-454B DIYCOUPLER-3858K75C

MRCOOL
In stock

DIY Line Set Coupler Kit for 24k and 36k line set - 75 ft DIYPro CableProduct DocumentationMRCOOL DIY Line Set Coupler Kit 24K 36K 75ft Installatio...

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$541.20 - $541.20
$541.20
$541.20 - $541.20
$541.20
MRCOOL DIY Line Set Coupler Kit 9K 12K 18K with 75ft DIY Pro Cable R-454B
$512.40 - $512.40
$512.40
$512.40 - $512.40
$512.40

MRCOOL DIY Line Set Coupler Kit 9K 12K 18K with 75ft DIY Pro Cable R-454B DIYCOUPLER-1412K75C

MRCOOL
In stock

DIY Line Set Coupler Kit for 9k, 12k and 18k line set - 75 ft DIYPro CableProduct DocumentationMRCOOL DIY Line Set Coupler Kit 9K 12K 18K 75ft Inst...

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$512.40 - $512.40
$512.40
$512.40 - $512.40
$512.40
MRCOOL DIY Easy Pro 24000 BTU R-454B Ductless Mini-Split Heat Pump Condenser 230V
$1,670.33 - $1,670.33
$1,670.33
$1,670.33 - $1,670.33
$1,670.33

MRCOOL DIY Easy Pro 24K BTU R-454B Ductless Mini-Split Heat Pump Condenser 230V EZPRO-24-HP-C-23011DE-O

MRCOOL
In stock

The MRCOOL® Easy Pro® 24K BTU 230V Ductless Heat Pump Single Zone Mini-Split Condenser is designed to make high-performance home comfort simple and...

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$1,670.33 - $1,670.33
$1,670.33
$1,670.33 - $1,670.33
$1,670.33
MRCOOL DIY Easy Pro 18000 BTU R-454B Ductless Mini-Split Heat Pump Condenser 230V
$1,473.70 - $1,473.70
$1,473.70
$1,473.70 - $1,473.70
$1,473.70

MRCOOL DIY Easy Pro 18K BTU R-454B Ductless Mini-Split Heat Pump Condenser 230V EZPRO-18-HP-C-23011DE-O

MRCOOL
In stock

The MRCOOL® Easy Pro® 18K BTU 230V Ductless Heat Pump Single Zone Mini-Split Condenser delivers powerful, energy-efficient comfort in a system desi...

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$1,473.70 - $1,473.70
$1,473.70
$1,473.70 - $1,473.70
$1,473.70
MRCOOL DIY Easy Pro 12000 BTU R-454B Ductless Mini-Split Heat Pump Condenser 115V
$1,304.78 - $1,304.78
$1,304.78
$1,304.78 - $1,304.78
$1,304.78

MRCOOL DIY Easy Pro 12K BTU R-454B Ductless Mini-Split Heat Pump Condenser 115V EZPRO-12-HP-C-11511DE-O

MRCOOL
In stock

The MRCOOL® Easy Pro® 12K BTU 115V Ductless Heat Pump Single Zone Mini-Split Condenser is designed to make upgrading your home’s comfort simple and...

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$1,304.78 - $1,304.78
$1,304.78
$1,304.78 - $1,304.78
$1,304.78
MRCOOL DIY Easy Pro 9000 BTU R-454B Ductless Mini-Split Heat Pump Condenser 115V
$1,195.55 - $1,195.55
$1,195.55
$1,195.55 - $1,195.55
$1,195.55

MRCOOL DIY Easy Pro 9K BTU R-454B Ductless Mini-Split Heat Pump Condenser 115V EZPRO-09-HP-C-11511DE-O

MRCOOL
In stock

The MRCOOL® Easy Pro® 9K BTU 115V Ductless Heat Pump Single Zone Mini-Split Condenser is designed to make high-efficiency home comfort simple and a...

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$1,195.55 - $1,195.55
$1,195.55
$1,195.55 - $1,195.55
$1,195.55
MRCOOL Monoblock MTHP Wall-Mount Heat Pump - Side View
MRCOOL Monoblock MTHP 10,000 BTU Wall-Mount Heat Pump - Front View
$1,641.60 - $1,641.60
$1,641.60
$1,641.60 - $1,641.60
$1,641.60

MRCOOL Monoblock MTHP 10,000 BTU 115V Wall-Mount Heat Pump MDM10115D

MRCOOL
In stock

The MRCOOL® Monoblock MTHP Series is designed to deliver reliable, energy-efficient heating and cooling for small spaces. Built for year-round comf...

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$1,641.60 - $1,641.60
$1,641.60
$1,641.60 - $1,641.60
$1,641.60
MRCOOL DIY Hybrid 36K BTU Air Handler - Side View
MRCOOL DIY Hybrid 36K BTU 3-Ton Ducted Air Handler DIY-36-HP-MUAH-230D25-O - Front View
$1,299.00 - $1,299.00
$1,299.00
$1,299.00 - $1,299.00
$1,299.00

MRCOOL DIY Hybrid 36K BTU 3-Ton Ducted Air Handler Multi-Position 208/230V DIY-36-HP-MUAH-230D25-O

MRCOOL
In stock

The 36K MRCOOL® DIY Hybrid Air Handler offers a powerful and adaptable solution for heating and cooling areas up to 1,500 square feet. Engineered f...

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$1,299.00 - $1,299.00
$1,299.00
$1,299.00 - $1,299.00
$1,299.00
MRCOOL DIY Hybrid 24K BTU Air Handler - Side View
MRCOOL DIY Hybrid 24K BTU Ducted Air Handler DIY-24-HP-MUAH-230D25-O - Front View
$1,299.00 - $1,299.00
$1,299.00
$1,299.00 - $1,299.00
$1,299.00

MRCOOL DIY Hybrid 24K BTU 2-Ton Ducted Air Handler Multi-Position 208/230V DIY-24-HP-MUAH-230D25-O

MRCOOL
In stock

The 24K MRCOOL® DIY Hybrid Air Handler is a smart, flexible solution for heating and cooling spaces up to 1,000 square feet. Designed for easy pair...

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$1,299.00 - $1,299.00
$1,299.00
$1,299.00 - $1,299.00
$1,299.00
MRCOOL DIY 5th Gen Hyper Heat 18K BTU Condenser - Side View
MRCOOL DIY 5th Gen Hyper Heat 18K BTU 230V Single Zone Condenser DIYHH-18-HP-C-230D25-O - Front View
$2,690.40 - $2,690.40
$2,690.40
$2,690.40 - $2,690.40
$2,690.40

MRCOOL DIY 5th Gen Hyper Heat 18K BTU 230V Single Zone Condenser w/ 25ft Install Kit DIYHH-18-HP-C-230D25-O

MRCOOL
In stock

Experience year-round comfort with the MRCOOL® DIY® 18k BTU 208/230V Hyper Heat 21.2 SEER Ductless Heat Pump Single Zone Mini Split Condenser—a hig...

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$2,690.40 - $2,690.40
$2,690.40
$2,690.40 - $2,690.40
$2,690.40
MRCOOL DIY 5th Gen Hyper Heat 12K BTU Condenser - Side View
MRCOOL DIY 5th Gen Hyper Heat 12K BTU 230V Single Zone Condenser DIYHH-12-HP-C-230D25-O - Front View
$2,211.60 - $2,211.60
$2,211.60
$2,211.60 - $2,211.60
$2,211.60

MRCOOL DIY 5th Gen Hyper Heat 12K BTU 230V Single Zone Condenser w/ 25ft Install Kit DIYHH-12-HP-C-230D25-O

MRCOOL
In stock

The MRCOOL® DIY® 12K BTU 208/230V Hyper Heat 23.5 SEER Ductless Heat Pump Single Zone Mini Split Condenser delivers powerful, high-efficiency clima...

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$2,211.60 - $2,211.60
$2,211.60
$2,211.60 - $2,211.60
$2,211.60
MRCOOL DIY Installation Tool Kit M-DIY-TK - Tool Bag, Crescent Wrench Set, and Hole Saw
$91.98 - $91.98
$91.98
$91.98 - $91.98
$91.98

MRCOOL DIY Installation Tool Kit M-DIY-TK

MRCOOL
In stock

MRCOOL DIY Tool Kit — everything you need for a mini-split installation in one bag. Includes tool bag, crescent wrench set, and 3.5" hole saw with ...

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$91.98 - $91.98
$91.98
$91.98 - $91.98
$91.98
MRCOOL 3.5in Bi-Metal Hole Saw w/ Locking Quick Change Arbor MHS3-5
$22.98 - $22.98
$22.98
$22.98 - $22.98
$22.98

MRCOOL 3.5in Bi-Metal Hole Saw w/ Quick-Change Arbor MHS3-5

MRCOOL
In stock

MRCOOL 3.5" bi-metal hole saw with locking quick-change arbor. Designed for cutting the wall penetration needed during mini-split installation. 3.5...

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$22.98 - $22.98
$22.98
$22.98 - $22.98
$22.98
MRCOOL DIY Line Set Coupler Kit 3/8x5/8 24K-36K with 75ft Wire | DIYCOUPLER-3858K75
$225.98 - $225.98
$225.98
$225.98 - $225.98
$225.98

MRCOOL DIY Line Set Coupler Kit 24K/36K w/ 75ft Wire DIYCOUPLER-3858K75

MRCOOL
In stock

The MRCOOL DIY Coupler Kit (DIYCOUPLER-3858K75) extends a DIY lineset run with two coupler sets and 75ft of communication wire. For 24K and 36K sys...

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$225.98 - $225.98
$225.98
$225.98 - $225.98
$225.98
MRCOOL DIY 4th Gen 50ft 3/8x5/8 R-410A Line Set with Cable for 24K-36K | DIY50-3858C
$649.98 - $649.98
$649.98
$649.98 - $649.98
$649.98

MRCOOL DIY 4th Gen 50ft 3/8 x 5/8 R-410A Lineset w/ Cable DIY50-3858C

MRCOOL
In stock

50ft 3/8" x 5/8" R-410A lineset with cable for MRCOOL DIY 4th Gen 24K & 36K indoor units.Length: 50 ft | Liquid: 3/8" | Suction: 5/8" | Include...

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$649.98 - $649.98
$649.98
$649.98 - $649.98
$649.98
MRCOOL DIY 4th Gen 50ft 1/4x1/2 R-410A Line Set with Cable for 9K-18K | DIY50-1412C
$589.98 - $589.98
$589.98
$589.98 - $589.98
$589.98

MRCOOL DIY 4th Gen 50ft 1/4 x 1/2 R-410A Lineset w/ Cable DIY50-1412C

MRCOOL
In stock

50ft 1/4" x 1/2" R-410A lineset with cable for MRCOOL DIY 4th Gen 9K, 12K & 18K indoor units.Length: 50 ft | Liquid: 1/4" | Suction: 1/2" | Inc...

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$589.98 - $589.98
$589.98
$589.98 - $589.98
$589.98
MRCOOL DIY 4th Gen 35ft 3/8x5/8 R-410A Line Set with Cable for 24K-36K | DIY35-3858C
$555.98 - $555.98
$555.98
$555.98 - $555.98
$555.98

MRCOOL DIY 4th Gen 35ft 3/8 x 5/8 R-410A Lineset w/ Cable DIY35-3858C

MRCOOL
In stock

DIY 4th Generation 35ft 3/8 x 5/8 Lineset for DIY 24K & 36K Indoor Technical Specifications Length 35 ft Liquid Line Size 3/8 in. Suction...

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$555.98 - $555.98
$555.98
$555.98 - $555.98
$555.98
MRCOOL DIY 4th Gen 35ft 1/4x1/2 R-410A Line Set with Cable for 9K-18K | DIY35-1412C
$503.98 - $503.98
$503.98
$503.98 - $503.98
$503.98

MRCOOL DIY 4th Gen 35ft 1/4 x 1/2 R-410A Lineset w/ Cable DIY35-1412C

MRCOOL
In stock

35ft 1/4" x 1/2" R-410A lineset with cable for MRCOOL DIY 4th Gen 9K, 12K & 18K indoor units.Length: 35 ft | Liquid: 1/4" | Suction: 1/2" | Inc...

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$503.98 - $503.98
$503.98
$503.98 - $503.98
$503.98
MRCOOL DIY 4th Gen 25ft 3/8x5/8 R-410A Pre-Charged Line Set for 24K-36K | DIY25-3858
$294.98 - $294.98
$294.98
$294.98 - $294.98
$294.98

MRCOOL DIY 4th Gen 25ft 3/8 x 5/8 R-410A Lineset DIY25-3858

MRCOOL
In stock

25ft 3/8" x 5/8" R-410A lineset for MRCOOL DIY 4th Gen 24K & 36K indoor units.Length: 25 ft | Liquid: 3/8" | Suction: 5/8" | R-410A compatible

$294.98 - $294.98
$294.98
$294.98 - $294.98
$294.98
MRCOOL DIY 4th Gen 16ft 3/8x5/8 R-410A Pre-Charged Line Set for 24K-36K | DIY16-3858
$265.98 - $265.98
$265.98
$265.98 - $265.98
$265.98

MRCOOL DIY 4th Gen 16ft 3/8 x 5/8 R-410A Lineset DIY16-3858

MRCOOL
In stock

16ft 3/8 x 5/8 Lineset for DIY 24K & 36K Indoor Technical Specifications Length 16 ft Liquid Line Size 3/8 in. Suction Line Size 5/8 in. ...

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$265.98 - $265.98
$265.98
$265.98 - $265.98
$265.98