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DIY 5th Gen Multi-Zone

The MRCOOL® DIY® 5th Generation Multi-Zone system lets you heat and cool multiple rooms from a single outdoor condenser — without requiring an HVAC license, vacuum pump, or professional installer. Each condenser supports 3 to 6 independent zones, all controlled separately via the SmartHVAC app, Amazon Alexa, or Google Assistant. R-454B refrigerant and Quick Connect® technology mean no vacuuming is required at installation.

Multi-Zone Condenser Comparison

Zones BTU SEER2 HSPF2-4 Max Coverage
3-Zone 18,000 23.9 10.0 Up to 750 sq. ft.
4-Zone 27,000 23.0 9.5 Up to 1,200 sq. ft.
5-Zone 36,000 23.0 9.9 Approx. 1,500 sq. ft.
6-Zone (48K) 48,000 21.8 10.0 Up to 2,000 sq. ft.
6-Zone (55K) 55,000 22.0 10.6 Up to 2,290 sq. ft.

What’s in This Collection

  • Multi-Zone Condensers — 3 through 6 zone outdoor units, all 230V R-454B
  • 230V Air Handlers — Wall mount indoor units from 6K to 36K BTU for pairing with any multi-zone condenser
  • R-454B Line Sets & Couplers — DIY Pro Cable line sets in 16ft to 50ft and No-Vac Quick Connect sets in 15ft to 50ft

Filters

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MRCOOL DIY Line Set Coupler Kit 24K 36K with 75ft DIY Pro Cable R-454B
$451.00 - $451.00
$451.00
$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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$451.00 - $451.00
$451.00
$541.20
$541.20 - $541.20
$541.20
MRCOOL DIY Line Set Coupler Kit 9K 12K 18K with 75ft DIY Pro Cable R-454B
$427.00 - $427.00
$427.00
$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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$427.00 - $427.00
$427.00
$512.40
$512.40 - $512.40
$512.40
MRCOOL 50ft R-454B No-Vac Quick Connect Line Set NV50-3834-O
$722.00 - $722.00
$722.00
$722.00 - $722.00
$722.00

MRCOOL 50ft R-454B No-Vac Quick Connect Line Set NV50-3834-O

MRCOOL
In stock

The MRCOOL® 50ft R-454B No-Vac Line Set is a pre-charged, quick-connect line set designed for use with compatible R-454B mini-split systems. The No...

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$722.00 - $722.00
$722.00
$722.00 - $722.00
$722.00
MRCOOL 35ft R-454B No-Vac Quick Connect Line Set NV35-3834-O
$550.00 - $550.00
$550.00
$550.00 - $550.00
$550.00

MRCOOL 35ft R-454B No-Vac Quick Connect Line Set NV35-3834-O

MRCOOL
In stock

The MRCOOL® 35ft R-454B No-Vac Line Set is a pre-charged, quick-connect line set designed for use with compatible R-454B mini-split systems. The No...

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$550.00 - $550.00
$550.00
$550.00 - $550.00
$550.00
MRCOOL 25ft R-454B No-Vac Quick Connect Line Set NV25-3834-O
$440.00 - $440.00
$440.00
$440.00 - $440.00
$440.00

MRCOOL 25ft R-454B No-Vac Quick Connect Line Set NV25-3834-O

MRCOOL
In stock

The MRCOOL® 25ft R-454B No-Vac Line Set is a pre-charged, quick-connect line set designed for use with compatible R-454B mini-split systems. The No...

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$440.00 - $440.00
$440.00
$440.00 - $440.00
$440.00
MRCOOL 15ft R-454B No-Vac Quick Connect Line Set NV15-3834-O
$334.00 - $334.00
$334.00
$334.00 - $334.00
$334.00

MRCOOL 15ft R-454B No-Vac Quick Connect Line Set NV15-3834-O

MRCOOL
In stock

The MRCOOL® 15ft R-454B No-Vac Line Set is a pre-charged, quick-connect line set designed for use with compatible R-454B mini-split systems. The No...

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$334.00 - $334.00
$334.00
$334.00 - $334.00
$334.00
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 5th Gen 50ft 3/8x5/8 R-454B Line Set with DIYPro Cable for 24K-36K | DIY50-3858C-O
$761.98 - $761.98
$761.98
$761.98 - $761.98
$761.98

MRCOOL DIY 5th Gen 50ft 3/8 x 5/8 R-454B Lineset w/ DIY Pro Cable DIY50-3858C-O

MRCOOL
In stock

50ft 3/8" x 5/8" pre-charged R-454B lineset with DIY Pro Cable for DIY 5th Gen 24K & 36K indoor units. Length: 50 ft Liquid Line: 3/8" | Suctio...

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$761.98 - $761.98
$761.98
$761.98 - $761.98
$761.98
MRCOOL DIY 5th Gen 50ft 1/4x1/2 R-454B Line Set with DIYPro Cable for 9K-18K | DIY50-1412C-O
$688.98 - $688.98
$688.98
$688.98 - $688.98
$688.98

MRCOOL DIY 5th Gen 50ft 1/4 x 1/2 R-454B Lineset w/ DIY Pro Cable DIY50-1412C-O

MRCOOL
In stock

50ft 1/4" x 1/2" pre-charged R-454B lineset with DIY Pro Cable for DIY 5th Gen 18K indoor units. Length: 50 ft Liquid Line: 1/4" | Suction Line: 1/...

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$688.98 - $688.98
$688.98
$688.98 - $688.98
$688.98
MRCOOL DIY 5th Gen 50ft 1/4x3/8 R-454B Line Set with DIYPro Cable for 6K-12K | DIY50-1438C-O
$675.98 - $675.98
$675.98
$675.98 - $675.98
$675.98

MRCOOL DIY 5th Gen 50ft 1/4 x 3/8 R-454B Lineset w/ DIY Pro Cable DIY50-1438C-O

MRCOOL
In stock

50ft 1/4" x 3/8" pre-charged R-454B lineset with DIY Pro Cable for DIY 5th Gen 6K, 9K & 12K indoor units. Length: 50 ft Liquid Line: 1/4" | Suc...

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$675.98 - $675.98
$675.98
$675.98 - $675.98
$675.98
MRCOOL DIY 5th Gen 35ft 3/8x5/8 R-454B Line Set with DIYPro Cable for 24K-36K | DIY35-3858C-O
$649.98 - $649.98
$649.98
$649.98 - $649.98
$649.98

MRCOOL DIY 5th Gen 35ft 3/8 x 5/8 R-454B Lineset w/ DIY Pro Cable DIY35-3858C-O

MRCOOL
In stock

35ft 3/8" x 5/8" pre-charged R-454B lineset with DIY Pro Cable for DIY 5th Gen 24K & 36K indoor units. Length: 35 ft Liquid Line: 3/8" | Suctio...

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$649.98 - $649.98
$649.98
$649.98 - $649.98
$649.98
MRCOOL DIY 5th Gen 35ft 1/4x1/2 R-454B Line Set with DIYPro Cable for 9K-18K | DIY35-1412C-O
$586.98 - $586.98
$586.98
$586.98 - $586.98
$586.98

MRCOOL DIY 5th Gen 35ft 1/4 x 1/2 R-454B Lineset w/ DIY Pro Cable DIY35-1412C-O

MRCOOL
In stock

35ft 1/4" x 1/2" pre-charged R-454B lineset with DIY Pro Cable for DIY 5th Gen 18K indoor units. Length: 35 ft Liquid Line: 1/4" | Suction Line: 1/...

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$586.98 - $586.98
$586.98
$586.98 - $586.98
$586.98
MRCOOL DIY 5th Gen 35ft 1/4x3/8 R-454B Line Set with DIYPro Cable for 6K-12K | DIY35-1438C-O
$577.98 - $577.98
$577.98
$577.98 - $577.98
$577.98

MRCOOL DIY 5th Gen 35ft 1/4 x 3/8 R-454B Lineset w/ DIY Pro Cable DIY35-1438C-O

MRCOOL
In stock

35ft 1/4" x 3/8" pre-charged R-454B lineset with DIY Pro Cable for DIY 5th Gen 6K, 9K & 12K indoor units. Length: 35 ft Liquid Line: 1/4" | Suc...

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$577.98 - $577.98
$577.98
$577.98 - $577.98
$577.98
MRCOOL DIY 5th Gen 25ft 3/8x5/8 R-454B Line Set with DIYPro Cable for 24K-36K | DIY25-3858C-O
$704.98 - $704.98
$704.98
$704.98 - $704.98
$704.98

MRCOOL DIY 5th Gen 25ft 3/8 x 5/8 R-454B Lineset w/ DIY Pro Cable DIY25-3858C-O

MRCOOL
In stock

25ft 3/8" x 5/8" pre-charged R-454B lineset with DIY Pro Cable for DIY 5th Gen 24K & 36K indoor units. Compatible with EZ Pro systems. Length: ...

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$704.98 - $704.98
$704.98
$704.98 - $704.98
$704.98
MRCOOL DIY 5th Gen 25ft 3/8x5/8 R-454B Pre-Charged Line Set for 24K-36K | DIY25-3858-O
$525.98 - $525.98
$525.98
$525.98 - $525.98
$525.98

MRCOOL DIY 5th Gen 25ft 3/8 x 5/8 R-454B Lineset DIY25-3858-O

MRCOOL
In stock

25ft 3/8" x 5/8" pre-charged R-454B lineset for MRCOOL DIY 5th Gen 24K & 36K indoor units. Length: 25 ft Liquid Line: 3/8" | Suction Line: 5/8"...

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$525.98 - $525.98
$525.98
$525.98 - $525.98
$525.98
MRCOOL DIY 5th Gen 25ft 1/4x1/2 R-454B Line Set with DIYPro Cable for 9K-18K | DIY25-1412C-O
$501.98 - $501.98
$501.98
$501.98 - $501.98
$501.98

MRCOOL DIY 5th Gen 25ft 1/4 x 1/2 R-454B Lineset w/ DIY Pro Cable DIY25-1412C-O

MRCOOL
In stock

25ft 1/4" x 1/2" pre-charged R-454B lineset with DIY Pro Cable for DIY 5th Gen 18K indoor units. Compatible with EZ Pro systems. Length: 25 ft Liqu...

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$501.98 - $501.98
$501.98
$501.98 - $501.98
$501.98
MRCOOL DIY 5th Gen 25ft 1/4x1/2 R-454B Pre-Charged Line Set for 9K-18K | DIY25-1412-O
$312.98 - $312.98
$312.98
$312.98 - $312.98
$312.98

MRCOOL DIY 5th Gen 25ft 1/4 x 1/2 R-454B Lineset DIY25-1412-O

MRCOOL
In stock

25ft 1/4" x 1/2" pre-charged R-454B lineset for MRCOOL DIY 5th Gen 18K indoor units. Length: 25 ft Liquid Line: 1/4" | Suction Line: 1/2" Refrigera...

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$312.98 - $312.98
$312.98
$312.98 - $312.98
$312.98
MRCOOL DIY 5th Gen 25ft 1/4x3/8 R-454B Line Set with DIYPro Cable for 6K-12K | DIY25-1438C-O
$470.98 - $470.98
$470.98
$470.98 - $470.98
$470.98

MRCOOL DIY 5th Gen 25ft 1/4 x 3/8 R-454B Lineset w/ DIY Pro Cable DIY25-1438C-O

MRCOOL
In stock

25ft 1/4" x 3/8" pre-charged R-454B lineset with DIY Pro Cable for DIY 5th Gen 6K, 9K & 12K indoor units. Length: 25 ft Liquid Line: 1/4" | Suc...

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$470.98 - $470.98
$470.98
$470.98 - $470.98
$470.98
MRCOOL DIY 5th Gen 25ft 1/4x3/8 R-454B Pre-Charged Line Set for 6K-12K | DIY25-1438-O
$303.98 - $303.98
$303.98
$303.98 - $303.98
$303.98

MRCOOL DIY 5th Gen 25ft 1/4 x 3/8 R-454B Lineset DIY25-1438-O

MRCOOL
In stock

25ft 1/4" x 3/8" pre-charged R-454B lineset for MRCOOL DIY 5th Gen 6K, 9K & 12K indoor units. Length: 25 ft Liquid Line: 1/4" | Suction Line: 3...

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$303.98 - $303.98
$303.98
$303.98 - $303.98
$303.98
MRCOOL DIY 5th Gen 16ft 3/8x5/8 R-454B Pre-Charged Line Set for 24K-36K | DIY16-3858-O
$311.98 - $311.98
$311.98
$311.98 - $311.98
$311.98

MRCOOL DIY 5th Gen 16ft 3/8 x 5/8 R-454B Lineset DIY16-3858-O

MRCOOL
In stock

16ft 3/8" x 5/8" pre-charged R-454B lineset for MRCOOL DIY 5th Gen 24K & 36K indoor units. Length: 16 ft Liquid Line: 3/8" | Suction Line: 5/8"...

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$311.98 - $311.98
$311.98
$311.98 - $311.98
$311.98
MRCOOL DIY 5th Gen 16ft 1/4x1/2 R-454B Pre-Charged Line Set for 9K-18K | DIY16-1412-O
$274.98 - $274.98
$274.98
$274.98 - $274.98
$274.98

MRCOOL DIY 5th Gen 16ft 1/4 x 1/2 R-454B Lineset DIY16-1412-O

MRCOOL
In stock

16ft 1/4" x 1/2" pre-charged R-454B lineset for MRCOOL DIY 5th Gen 18K indoor units. No vacuum pump required. Length: 16 ft Liquid Line: 1/4" | Suc...

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$274.98 - $274.98
$274.98
$274.98 - $274.98
$274.98
MRCOOL DIY 5th Gen 16ft 1/4x3/8 R-454B Pre-Charged Line Set for 6K-12K | DIY16-1438-O
$261.98 - $261.98
$261.98
$261.98 - $261.98
$261.98

MRCOOL DIY 5th Gen 16ft 1/4 x 3/8 R-454B Lineset DIY16-1438-O

MRCOOL
In stock

16ft 1/4" x 3/8" pre-charged R-454B lineset for MRCOOL DIY 5th Gen 6K, 9K & 12K indoor units. No vacuum pump required — connect and go. Length:...

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$261.98 - $261.98
$261.98
$261.98 - $261.98
$261.98
55k 6-Zone bundle
MRCOOL DIY 5th Gen 6-Zone 55k Condenser
$4,570.80 - $4,570.80
$4,570.80
$4,570.80 - $4,570.80
$4,570.80

MRCOOL DIY 5th Gen 55k BTU 6-Zone Multi-Zone Condenser 230V DIY-MULTI6-55HP230D-O

MRCOOL

The 5th Generation MRCOOL® DIY® 55k BTU 6-Zone Multi-Zone Condenser is MRCOOL's largest DIY system. Supports up to 6 air handlers covering up to 2,...

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$4,570.80 - $4,570.80
$4,570.80
$4,570.80 - $4,570.80
$4,570.80
6-Zone bundle
MRCOOL DIY 5th Gen 6-Zone 48k Condenser
$3,873.60 - $3,873.60
$3,873.60
$3,873.60 - $3,873.60
$3,873.60

MRCOOL DIY 5th Gen 48k BTU 6-Zone Multi-Zone Condenser 230V DIY-MULTI6-48HP230D-O

MRCOOL

The 5th Generation MRCOOL® DIY® 48k BTU 6-Zone Multi-Zone Condenser supports up to 6 air handlers covering approximately 2,000 sq. ft. total. SEER2...

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$3,873.60 - $3,873.60
$3,873.60
$3,873.60 - $3,873.60
$3,873.60