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MRCOOL DIY

Power your home or off-grid comfort with MRCOOL DIY mini splits, the industry’s leading do-it-yourself ductless HVAC solution designed for simple installation without the need for specialized tools or professional refrigerant handling. Built with pre-charged Quick Connect® line sets, these systems make it easy to add efficient heating and cooling to bedrooms, garages, RV spaces, cabins, and full homes—giving you reliable climate control with lower installation costs and modern inverter efficiency.

Engineered for convenience and performance, MRCOOL DIY systems deliver year-round comfort with smart features, energy-efficient operation, and app-based control options for easy temperature management anywhere. Whether you're upgrading an existing space or building a new off-grid setup, this collection offers dependable, flexible, and cost-effective HVAC solutions designed for real-world simplicity and long-term comfort.

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MRCOOL DIY | 5th Gen E Star 36,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O image 2
MRCOOL DIY | 5th Gen E Star 36,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O image 1
$3,769.00 - $3,769.00
$3,769.00
$3,769.00 - $3,769.00
$3,769.00

MRCOOL DIY | 5th Generation 36k BTU Heat Pump Mini Split - Complete System (454B Refrigerant)

MRCOOL DIY

5th Gen E Star 36,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O DIY Installation. Pro-Level Perfor...

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$3,769.00 - $3,769.00
$3,769.00
$3,769.00 - $3,769.00
$3,769.00
MRCOOL DIY | 25ft 1/4 x 1/2 Lineset | DIY 9K, 12K & 18K Indoor image 2
MRCOOL DIY | 25ft 1/4 x 1/2 Lineset | DIY 9K, 12K & 18K Indoor image 1
$233.00 - $233.00
$233.00
$233.00 - $233.00
$233.00

MRCOOL DIY | 25ft 1/4 x 1/2 Lineset | DIY 9K, 12K & 18K Indoor

MRCOOL DIY

25ft 1/4 x 1/2 Lineset | DIY 9K, 12K & 18K Indoor Ensure a smooth, reliable connection between your indoor and outdoor units with the MRCOOL DI...

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$233.00 - $233.00
$233.00
$233.00 - $233.00
$233.00
MRCOOL DIY | DIY 4th Generation | E Star | 12000 BTU | Ductless Mini-Split Air Handler 208-230V/60Hz image 1
$574.00 - $574.00
$574.00
$574.00 - $574.00
$574.00

MRCOOL DIY | DIY 4th Generation | E Star | 12000 BTU | Ductless Mini-Split Air Handler 208-230V/60Hz

MRCOOL DIY

DIY 4th Generation | E Star | 12000 BTU | Ductless Mini-Split Air Handler 208-230V/60Hz The MRCOOL® 4th Generation DIY 12K BTU Ductless Wall Mounte...

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$574.00 - $574.00
$574.00
$574.00 - $574.00
$574.00
MRCOOL DIY | DIY 4th Generation E Star | 12,000 BTU | Ductless Mini-Split Air Handler | 115V/60Hz image 1
$668.00 - $668.00
$668.00
$668.00 - $668.00
$668.00

MRCOOL DIY | DIY 4th Generation E Star | 12,000 BTU | Ductless Mini-Split Air Handler | 115V/60Hz

MRCOOL DIY

DIY 4th Generation E Star | 12,000 BTU | Ductless Mini-Split Air Handler | 115V/60Hz The MRCOOL® DIY 4th Gen Energy Star Series 12,000 BTU ductless...

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$668.00 - $668.00
$668.00
$668.00 - $668.00
$668.00
MRCOOL DIY | 5th Gen E Star 36,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O image 2
MRCOOL DIY | 5th Gen E Star 36,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O image 1
$3,329.00 - $3,329.00
$3,329.00
$3,329.00 - $3,329.00
$3,329.00

MRCOOL DIY | 5th Generation 24k BTU Heat Pump Mini Split - Complete System (454B Refrigerant)

MRCOOL DIY

5th Gen E Star 24,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-24-HP-WM-230D25-O DIY-Friendly Installation. Energy ...

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$3,329.00 - $3,329.00
$3,329.00
$3,329.00 - $3,329.00
$3,329.00
MRCOOL DIY | 5th Gen E Star 36,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O image 2
MRCOOL DIY | 5th Gen E Star 36,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O image 1
$2,909.00 - $2,909.00
$2,909.00
$2,909.00 - $2,909.00
$2,909.00

MRCOOL DIY | 5th Generation 18k BTU Heat Pump Mini Split - Complete System (454B Refrigerant)

MRCOOL DIY

5th Gen E Star 18,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-18-HP-WM-230D25-O Smart Comfort. DIY Installation. H...

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$2,909.00 - $2,909.00
$2,909.00
$2,909.00 - $2,909.00
$2,909.00
MRCOOL DIY | 5th Gen E Star 36,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O image 2
MRCOOL DIY | 5th Gen E Star 36,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O image 1
$2,359.00 - $2,359.00
$2,359.00
$2,359.00 - $2,359.00
$2,359.00

MRCOOL DIY | 5th Generation 12k BTU Heat Pump Mini Split - Complete System (454B Refrigerant)

MRCOOL DIY

5th Gen E Star 12,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 115V, DIY-12-HP-WM-115D25-O DIY Installation. Smart Control. E...

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$2,359.00 - $2,359.00
$2,359.00
$2,359.00 - $2,359.00
$2,359.00
MRCOOL DIY | 5th Gen E Star 36,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O image 2
MRCOOL DIY | 5th Gen E Star 36,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-36-HP-WM-230D25-O image 1
$2,329.00 - $2,329.00
$2,329.00
$2,329.00 - $2,329.00
$2,329.00

MRCOOL DIY | 5th Generation 9k BTU Heat Pump Mini Split - Complete System (454B Refrigerant)

MRCOOL DIY

5th Gen E Star 9,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 115V, DIY-09-HP-WM-115D25-O Energy Star® Certified • Smart Cont...

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$2,329.00 - $2,329.00
$2,329.00
$2,329.00 - $2,329.00
$2,329.00
MRCOOL DIY | 24k DIY 5th Generation Mini-split Air Handler 230v
MRCOOL DIY | 24k DIY 5th Generation Mini-split Air Handler 230v
$1,281.00 - $1,281.00
$1,281.00
$1,281.00 - $1,281.00
$1,281.00

MRCOOL DIY | 36k DIY 5th Generation Mini-split Air Handler 230v

MRCOOL DIY

Overview 36K DIY 5TH GENERATION MINI-SPLIT AIR HANDLER 230V The 5th Generation MRCOOL® DIY® 36K BTU Ductless Mini-Split offers efficient heating an...

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$1,281.00 - $1,281.00
$1,281.00
$1,281.00 - $1,281.00
$1,281.00
MRCOOL DIY | 24k DIY 5th Generation Mini-split Air Handler 230v
MRCOOL DIY | 24k DIY 5th Generation Mini-split Air Handler 230v
$965.00 - $965.00
$965.00
$965.00 - $965.00
$965.00

MRCOOL DIY | 24k DIY 5th Generation Mini-split Air Handler 230v

MRCOOL DIY

Overview 24K DIY 5TH GENERATION MINI-SPLIT AIR HANDLER 230V The 5th Generation MRCOOL® DIY® 24K BTU Ductless Mini-Split provides efficient heating ...

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$965.00 - $965.00
$965.00
$965.00 - $965.00
$965.00
MRCOOL DIY | 18k DIY 5th Generation Mini-split Air Handler 230v
MRCOOL DIY | 18k DIY 5th Generation Mini-split Air Handler 230v
$931.00 - $931.00
$931.00
$931.00 - $931.00
$931.00

MRCOOL DIY | 18k DIY 5th Generation Mini-split Air Handler 230v

MRCOOL DIY

Overview 18K DIY 5TH GENERATION MINI-SPLIT AIR HANDLER 115V The 5th Generation MRCOOL® DIY® 18K BTU Ductless Mini-Split delivers powerful heating a...

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$931.00 - $931.00
$931.00
$931.00 - $931.00
$931.00
MRCOOL DIY | Line Set Coupler Kit | 24k and 36k line set | 75 ft DIYPro Cable image 1
$393.00 - $393.00
$393.00
$393.00 - $393.00
$393.00

MRCOOL DIY | Line Set Coupler Kit | 24k and 36k line set | 75 ft DIYPro Cable

MRCOOL DIY

Line Set Coupler Kit | 24k and 36k line set | 75 ft DIYPro Cable Extend the reach of your MRCOOL DIY 4th Gen Energy Star Series heat pump with the ...

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$393.00 - $393.00
$393.00
$393.00 - $393.00
$393.00
MRCOOL DIY | Line Set Coupler Kit | 24k and 36k line set | 75 ft DIYPro Cable image 1
$196.00 - $196.00
$196.00
$196.00 - $196.00
$196.00

MRCOOL DIY | Line Set Coupler Kit | 24k and 36k line set | 75 ft DIYPro Cable

MRCOOL DIY

Line Set Coupler Kit | 24k and 36k line set | 75 ft DIYPro Cable Extend your MRCOOL DIY 4th Gen system with confidence using the MRCOOL DIYCOUPLER-...

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$196.00 - $196.00
$196.00
$196.00 - $196.00
$196.00
MRCOOL DIY | DIY 4th Generation | Line Set Coupler Kit | 9k, 12k and 18k line set | 75 ft DIYPro Cable image 1
$427.00 - $427.00
$427.00
$427.00 - $427.00
$427.00

MRCOOL DIY | DIY 4th Generation | Line Set Coupler Kit | 9k, 12k and 18k line set | 75 ft DIYPro Cable

MRCOOL DIY

DIY 4th Generation | Line Set Coupler Kit | 9k, 12k and 18k line set | 75 ft DIYPro Cable Enhance your MRCOOL DIY 4th Generation Energy Star Series...

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$427.00 - $427.00
$427.00
$427.00 - $427.00
$427.00
MRCOOL DIY | DIY 4th Generation | 50ft 3/8 x 5/8 Lineset | DIY 24K & 36K Indoor image 2
MRCOOL DIY | DIY 4th Generation | 50ft 3/8 x 5/8 Lineset | DIY 24K & 36K Indoor image 1
$565.00 - $565.00
$565.00
$565.00 - $565.00
$565.00

MRCOOL DIY | DIY 4th Generation | 50ft 3/8 x 5/8 Lineset | DIY 24K & 36K Indoor

MRCOOL DIY

DIY 4th Generation | 50ft 3/8 x 5/8 Lineset | DIY 24K & 36K Indoor Simplify your MRCOOL DIY installation with the MRCOOL 50' Pre-Charged Line S...

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$565.00 - $565.00
$565.00
$565.00 - $565.00
$565.00
MRCOOL DIY | DIY 4th Generation | 35ft 3/8 x 5/8 Lineset | DIY 24K & 36K Indoor
MRCOOL DIY | DIY 4th Generation | 35ft 3/8 x 5/8 Lineset | DIY 24K & 36K Indoor
$483.00 - $483.00
$483.00
$483.00 - $483.00
$483.00

MRCOOL DIY | DIY 4th Generation | 35ft 3/8 x 5/8 Lineset | DIY 24K & 36K Indoor

MRCOOL DIY

Overview Effortlessly link your air handler to its designated condenser using the MRCOOL 35' pre-charged line set DIY25-3858C. Crafted from robust ...

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$483.00 - $483.00
$483.00
$483.00 - $483.00
$483.00
MRCOOL DIY | 25ft 3/8 x 5/8 Lineset | DIY 24K & 36K Indoor image 2
MRCOOL DIY | 25ft 3/8 x 5/8 Lineset | DIY 24K & 36K Indoor image 1
$256.00 - $256.00
$256.00
$256.00 - $256.00
$256.00

MRCOOL DIY | 25ft 3/8 x 5/8 Lineset | DIY 24K & 36K Indoor

MRCOOL DIY

25ft 3/8 x 5/8 Lineset | DIY 24K & 36K Indoor Ensure a fast, reliable connection between your air handler and condenser with the MRCOOL DIY25-3...

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$256.00 - $256.00
$256.00
$256.00 - $256.00
$256.00
MRCOOL DIY | DIY 4th Generation | E Star | 24000 BTU | Ductless Mini-Split Air Handler 208-230V/60Hz image 1
$824.00 - $824.00
$824.00
$824.00 - $824.00
$824.00

MRCOOL DIY | DIY 4th Generation | E Star | 24000 BTU | Ductless Mini-Split Air Handler 208-230V/60Hz

MRCOOL DIY

DIY 4th Generation | E Star | 24000 BTU | Ductless Mini-Split Air Handler 208-230V/60Hz The MRCOOL® 4th Generation DIY 24K BTU Ductless Wall Mounte...

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$824.00 - $824.00
$824.00
$824.00 - $824.00
$824.00
MRCOOL DIY | DIY 4th Generation | E Star | 18000 BTU | Ductless Mini-Split Air Handler 208-230V/60Hz image 1
$724.00 - $724.00
$724.00
$724.00 - $724.00
$724.00

MRCOOL DIY | DIY 4th Generation | E Star | 18000 BTU | Ductless Mini-Split Air Handler 208-230V/60Hz

MRCOOL DIY

DIY 4th Generation | E Star | 18000 BTU | Ductless Mini-Split Air Handler 208-230V/60Hz The MRCOOL® 4th Generation DIY 18K BTU Ductless Wall Mounte...

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$724.00 - $724.00
$724.00
$724.00 - $724.00
$724.00
MRCOOL DIY | DIY 4th Generation | E Star | 9000 BTU | Ductless Mini-Split Air Handler 230V/60Hz image 1
$442.00 - $442.00
$442.00
$442.00 - $442.00
$442.00

MRCOOL DIY | DIY 4th Generation | E Star | 9000 BTU | Ductless Mini-Split Air Handler 230V/60Hz

MRCOOL DIY

DIY 4th Generation | E Star | 9000 BTU | Ductless Mini-Split Air Handler 230V/60Hz The MRCOOL® 4th Generation DIY 9K BTU Ductless Wall Mounted Air ...

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$442.00 - $442.00
$442.00
$442.00 - $442.00
$442.00

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