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Get $100 Cash Back on Your Qualifying Purchase
- Spend over $1000 on heating and air equipment.
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- Get a check mailed to you for $100.
Limited Time Offer. Act Now!
Rebate only valid for qualifying purchases made after September 19, 2022 until further notice. Rebate claim limited to one per customer. Purchase must be made prior to sharing video. Please allow 1-2 weeks for processing. May not be used in conjunction with any other offer or discount. Video privacy setting must be public.
Contact an expert now.
The next generation of comfort is here.
With a new MrCool DIY 5th Gen Multi-Zone Mini-Split. Our patented MRCOOL® Series heat pump is the only ductless mini-split system on the market specifically designed for amateur installation.
Customize Your Comfort
Choose Your System Size
Select the outdoor condenser that matches your home’s square footage and zone needs. The all-new MrCool DIY Multi-zone goes up to 6 zones to meet your home’s needs.
Easy DIY® installation
Leakage Detection
DIY Pro® Cable
Match Each Zone to Your Ideal Air Handler
Choose a wall-mounted, ceiling-mounted, or the all-new DIY Hybrid Central Ducted air handler to create a multi-zone system built around your home and your needs.
Smartphone App
Low Ambient Cooling*
Easy Quick Connect
Explore the lineup.
SmartPhone App
Control your MRCOOL® DIY® anywhere with your Apple or Android smart device and an internet connection.
® DIY® Anywhere and manage
App Available in Apple & Android
Follow Me Function
Keep the included remote close by, and MRCOOL DIY® will track the air temperature around you to ensure maximum comfort.
Tracks temperature around you for personalized comfort.
Auto Restart
Multi-Zone Solutions
Individual Rooms?
Individual Results.
Each zone can choose settings that won’t influence the others
Every air handler can use the Follow Me feature for maximum comfort
The MrCool DIY has 2, 3, 4, 5 and 6 zone options, the best warranties in the business, even better efficiency ratings, and a new Armored Pro Cable.
DIY made easy.

No refrigerant? No problem. With our patented, pre-charged quick connect line sets you'll be able to install your MRCOOL® DIY® without needing specialized training or expensive tools.
The ends use proprietary Quick Connect® Threaded fittings that seal tight without needing brazing or soldering.
Made to be secure, lead-free, and DIY-safe - even for first-timers
U.S. patented technology that sets MRCOOL apart in the ductless market.

Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit.
Armored metal casing protects your electrical connection from damage, pests, and the elements.
Especially useful in garages, basements, sheds, or exterior walls where exposure is a concern.
Protect your Purchase.
Warranty Programs
Each unit comes backed with a standard 5-year warranty on replacement parts and a 7-year warranty on the compressor. For even greater protection, upgrade to the MrCool Care Kit Program and enjoy an extended limited lifetime replacement warranty—because long-term comfort shouldn’t come with surprises.

Fighting off whatever weather comes your way shouldn’t be a difficult task for your home heating and cooling system. With the MrCool DIY Multi Zone Mini Split 48k BTU 2 Zone Ductless AC & Heat Pump - 5th Generation - R454B for your home, staying comfortable is a breeze. Backed by AHRI and Energy Star certifications, plus ETL and UL listings, this MrCool Mini Split passes rigorous third-party evaluations to prove the legitimacy of every functional, efficiency, and safety claim. Make every inch of your 2000 to 2400 square foot space feel exactly how you want with the 48k BTU MrCool AC & Heat Pump.
When it comes to tackling the problem head-on, the MrCool DIY Multi Zone Mini Split 48k BTU 2 Zone Ductless AC & Heat Pump - 5th Generation - R454B puts the power in your hands to make sure every piece gets up and running. With gold fin condensers that help protect the internal hardware safe from corrosion, this MrCool Heat Pump is a great solution for coastal areas and regions with higher than average corrosive particulate in the air. Thanks to intelligent creations like the DIYPro armored cable and the quick connect DIY line sets that let you connect the indoor and outdoor units with ease, this MrCool AC & Heat Pump is designed to make sure you can enjoy comfortable temperatures as quickly as you can get everything hooked up.
Effortlessly meeting your preferences, even as they shift throughout the day, the MrCool DIY Multi Zone Mini Split 48k BTU 2 Zone Ductless AC & Heat Pump - 5th Generation - R454B is the perfect solution to make the most of your space at every turn. Both air handlers can use the Follow Me function autonomously, using built-in sensors in the remote control to keep track of the current conditions in the room and adjust the system as necessary to better optimize them. Between the remote and the smartphone app that allows you to change up your preferences regardless where you are in the world, this MrCool Mini Split puts every tool you could need and then some within your grasp.
When your impressive new system even comes with a warranty that covers 5 years on parts and 7 years on the compressor, plus the means to extend that coverage into a limited lifetime for the compressor after enrolling in the MrCool Care Program, what reason is there to hold back any longer? Opt for this 5th Generation 48k BTU MrCool DIY Multi Zone Ductless Mini Split AC & Heat Pump system with an air handler and line set using energy-efficient R454B refrigerant per zone today.
| Model | DIYM248HPW04D |
|---|---|
| AHRI Number | 216032595 |
| Bundle Avg Coverage Area | 2,000 - 2,400 Sq Ft |
| Bundle Cooling Capacity | 4 Ton |
| Bundle Cooling Efficiency (SEER2) | 21.8 |
| Heat Pump Efficiency (HSPF2) | 10 |
| Series | DIY |
| Region Compatibility | Nationwide |
| California Residents | see Prop 65 WARNING |
DIY-MULTI6-48HP230D-O Specifications:
| Model | DIY-MULTI6-48HP230D-O |
|---|---|
| UPC | 840255587471 |
| AHRI Number | 216032595 |
| Product Height (in) | 52.5 |
| Avg Coverage Area | 2,000 - 2,400 Sq Ft |
| Product Length (in) | 16.3 |
| Compressor | Inverter |
| Product Width (in) | 37.5 |
| Cooling Capacity | 4 Ton |
| Electrical Phase | 1-Phase |
| Heat Pump Efficiency (HSPF2) | 10 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 1/4 inch |
| Max Overcurrent Protection | 40 amps |
| Weight (lbs) | 223.800000 |
| Primary Heating Capacity | 45,001 - 50,000 BTU |
| Refrigerant | R-454b |
| Cooling Efficiency (SEER2) | 21.8 |
| Series | DIY |
| Suction Line Size | 3/8 inch |
| System Application Type | Ductless Split Systems |
| Voltage | 240 |
| Warranty | 5 Year Parts, 7 Year Compressor |
| Region Compatibility | Nationwide |
DIY-12-HP-WMAH-230D25-O Specifications:
| Model | DIY-12-HP-WMAH-230D25-O |
|---|---|
| UPC | 840255587037 |
| Product Height (in) | 11.7 |
| Configuration | Wall Mounted |
| Product Length (in) | 7.4 |
| Air Flow Direction | Horizontal |
| Product Width (in) | 31.6 |
| Blower Motor | Variable Speed |
| Cooling Capacity | 1 Ton |
| Electrical Phase | 1-Phase |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 1/4 inch |
| Weight (lbs) | 24.500000 |
| Refrigerant | R-454b |
| Series | DIY |
| Special Features | Alexa, Google Assistant, WiFi Capable |
| Suction Line Size | 3/8 inch |
| System Application Type | Ductless Split Systems |
| Voltage | 240 |
| Warranty | Lifetime, 5 Year Parts, 7 Year Compressor |
DIYCASSETTE12HP-230D25-O Specifications:
| Model | DIYCASSETTE12HP-230D25-O |
|---|---|
| UPC | 840255587518 |
| Product Height (in) | 8.9 |
| Configuration | Ceiling Mounted |
| Product Length (in) | 13.2 |
| Air Flow Direction | Downflow |
| Product Width (in) | 50.3 |
| Blower Motor | Variable Speed |
| Cooling Capacity | 1 Ton |
| Electrical Phase | 1-Phase |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 1/4 inch |
| Weight (lbs) | 45.000000 |
| Refrigerant | R-454b |
| Series | DIY |
| Special Features | Alexa, Google Assistant, WiFi Capable |
| Suction Line Size | 3/8 inch |
| System Application Type | Ductless Split Systems |
| Voltage | 240 |
| Warranty | Lifetime, 5 Year Parts, 7 Year Compressor |
DIY-24-HP-WMAH-230D25-O Specifications:
| Model | DIY-24-HP-WMAH-230D25-O |
|---|---|
| UPC | 840255587051 |
| Product Height (in) | 13.19 |
| Configuration | Wall Mounted |
| Product Length (in) | 8.9 |
| Air Flow Direction | Horizontal |
| Product Width (in) | 42.52 |
| Blower Motor | Variable Speed |
| Cooling Capacity | 2 Ton |
| Electrical Phase | 1-Phase |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 3/8 inch |
| Max Overcurrent Protection | 25 amps |
| Weight (lbs) | 54.670000 |
| Refrigerant | R-454b |
| Series | DIY |
| Suction Line Size | 5/8 inch |
| System Application Type | Ductless Split Systems |
| Voltage | 240 |
| Warranty | 5 Year Parts, 7 Year Compressor |
DIY-24-HP-WMAH-230D25-O Specifications:
| Model | DIY-24-HP-WMAH-230D25-O |
|---|---|
| UPC | 840255587051 |
| Product Height (in) | 13.19 |
| Configuration | Wall Mounted |
| Product Length (in) | 8.9 |
| Air Flow Direction | Horizontal |
| Product Width (in) | 42.52 |
| Blower Motor | Variable Speed |
| Cooling Capacity | 2 Ton |
| Electrical Phase | 1-Phase |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 3/8 inch |
| Max Overcurrent Protection | 25 amps |
| Weight (lbs) | 54.670000 |
| Refrigerant | R-454b |
| Series | DIY |
| Suction Line Size | 5/8 inch |
| System Application Type | Ductless Split Systems |
| Voltage | 240 |
| Warranty | 5 Year Parts, 7 Year Compressor |
DIY-36-HP-WMAH-230D25-O Specifications:
| Model | DIY-36-HP-WMAH-230D25-O |
|---|---|
| UPC | 840255587068 |
| Product Height (in) | 14.25 |
| Configuration | Wall Mounted |
| Product Length (in) | 11.1 |
| Air Flow Direction | Horizontal |
| Product Width (in) | 49.57 |
| Blower Motor | Variable Speed |
| Cooling Capacity | 3 Ton |
| Electrical Phase | 1-Phase |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 3/8 inch |
| Max Overcurrent Protection | 35 amps |
| Weight (lbs) | 70.990000 |
| Refrigerant | R-454b |
| Series | DIY |
| Suction Line Size | 5/8 inch |
| System Application Type | Ductless Split Systems |
| Voltage | 240 |
| Warranty | 5 Year Parts, 7 Year Compressor |
DIY16-1438-O Specifications:
| Model | DIY16-1438-O |
|---|---|
| UPC | 840255589154 |
| Product Length (in) | 192 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 1/4 inch |
| Weight (lbs) | 7.900000 |
| Suction Line Size | 3/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |
DIY16-3858-O Specifications:
| Model | DIY16-3858-O |
|---|---|
| UPC | 840255587082 |
| Product Length (in) | 192 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 3/8 inch |
| Weight (lbs) | 19.000000 |
| Suction Line Size | 5/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |
DIY25-1438-O Specifications:
| Model | DIY25-1438-O |
|---|---|
| UPC | 840255589161 |
| Product Length (in) | 300 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 1/4 inch |
| Weight (lbs) | 10.400000 |
| Suction Line Size | 3/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |
DIY25-3858-O Specifications:
| Model | DIY25-3858-O |
|---|---|
| UPC | 840255587112 |
| Product Length (in) | 300 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 3/8 inch |
| Weight (lbs) | 19.000000 |
| Suction Line Size | 5/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |
DIY35-1438C-O Specifications:
| Model | DIY35-1438C-O |
|---|---|
| UPC | 840255589185 |
| Product Length (in) | 420 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 1/4 inch |
| Weight (lbs) | 17.600000 |
| Suction Line Size | 3/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |
DIY35-3858C-O Specifications:
| Model | DIY35-3858C-O |
|---|---|
| UPC | 840255587143 |
| Product Length (in) | 420 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 3/8 inch |
| Weight (lbs) | 23.000000 |
| Suction Line Size | 5/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |
DIY50-1438C-O Specifications:
| Model | DIY50-1438C-O |
|---|---|
| UPC | 840255589192 |
| Product Height (in) | 36.5 |
| Product Width (in) | 35.5 |
| Product Length (in) | 600 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 1/4 inch |
| Weight (lbs) | 24.000000 |
| Suction Line Size | 3/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |
DIY50-3858C-O Specifications:
| Model | DIY50-3858C-O |
|---|---|
| UPC | 840255587167 |
| Product Length (in) | 600 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 3/8 inch |
| Weight (lbs) | 37.000000 |
| Suction Line Size | 5/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |
DIY16-3858-O Specifications:
| Model | DIY16-3858-O |
|---|---|
| UPC | 840255587082 |
| Product Length (in) | 192 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 3/8 inch |
| Weight (lbs) | 19.000000 |
| Suction Line Size | 5/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |
DIY25-3858-O Specifications:
| Model | DIY25-3858-O |
|---|---|
| UPC | 840255587112 |
| Product Length (in) | 300 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 3/8 inch |
| Weight (lbs) | 19.000000 |
| Suction Line Size | 5/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |
DIY35-3858C-O Specifications:
| Model | DIY35-3858C-O |
|---|---|
| UPC | 840255587143 |
| Product Length (in) | 420 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 3/8 inch |
| Weight (lbs) | 23.000000 |
| Suction Line Size | 5/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |
DIY50-3858C-O Specifications:
| Model | DIY50-3858C-O |
|---|---|
| UPC | 840255587167 |
| Product Length (in) | 600 |
| Line Set Connection Type | Quick Connect |
| Liquid Line Size | 3/8 inch |
| Weight (lbs) | 37.000000 |
| Suction Line Size | 5/8 inch |
| System Application Type | Ductless Split Systems |
| Warranty | None |



