The MRCOOL® DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Condenser is a 3-zone ductless heating and cooling condenser designed to provide customizable comfort for multiple rooms or zones throughout your home. This outdoor condenser is part of the MRCOOL® DIY® 5th Gen system and is compatible with select MRCOOL® DIY® indoor air handlers and pre-charged QuickConnect® line sets.
Built with environmentally friendly R-454B refrigerant, inverter-driven technology, and smart home compatibility, the DIY-MULTI3-18HP230D-O delivers efficient year-round comfort while simplifying installation with MRCOOL's innovative DIY platform.
Key Features & Benefits
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18,000 BTU Capacity: Provides efficient heating and cooling for multi-room applications.
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3-Zone System: Connect up to three compatible indoor air handlers for independent room-by-room comfort.
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DIY QuickConnect® Technology: Compatible with pre-charged QuickConnect® line sets for simplified installation.
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R-454B Refrigerant: Environmentally friendly refrigerant with lower global warming potential.
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DC Inverter Technology: Designed for efficient performance and lower energy consumption.
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Gold Fin® Condenser: Corrosion-resistant coating helps extend system life.
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DIYPRO® Cable Compatible: Durable outdoor installation solution.
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SmartHVAC® App Compatible: Control your system remotely using your smartphone.
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Voice Control Compatible: Works with Amazon Alexa and Google Assistant where supported.
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Provides Heating and Cooling: One system for year-round comfort.
Perfect For
- Homes with multiple rooms requiring independent temperature control
- Bedrooms and master suites
- Home offices and studios
- Basements and bonus rooms
- Garages and workshops
- Home additions and converted spaces
- Areas without existing ductwork
What's Included
- 18,000 BTU MRCOOL® DIY® 5th Gen Multi-Zone Outdoor Condenser
- Manufacturer documentation
Note: Indoor air handlers, line sets, communication cables, and accessories are sold separately unless specifically stated in the selected package configuration.
Specifications & Dimensions
General Specifications
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Model: DIY-MULTI3-18HP230D-O
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System Type: Multi-Zone Ductless Mini Split Condenser
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Series: MRCOOL® DIY® 5th Gen
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Capacity: 18,000 BTU (1.5 Ton)
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Zone Capacity: Up to 3 Zones
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Voltage: 208-230V
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Phase: 1
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Frequency: 60 Hz
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Refrigerant: R-454B
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Installation Type: DIY QuickConnect® Compatible
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Smart Controls: SmartHVAC® App Compatible
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Voice Control: Amazon Alexa & Google Assistant Compatible
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ETL / Intertek Listed: Yes (5031495)
Dimensions & Weight
Certifications & Warranty
- Intertek Listed (ETL 5031495)
- 7-Year Compressor Warranty
- 5-Year Parts Warranty
- Limited Lifetime Replacement Warranty with MRCOOL Care Program Enrollment
Why Buy from CulinaryProfis?
CulinaryProfis is an authorized online dealer offering secure checkout, expert product support, and nationwide shipping throughout the contiguous United States. If you need assistance selecting compatible MRCOOL® indoor units and accessories for your multi-zone application, our team is here to help.
Frequently Asked Questions
Does this condenser include indoor air handlers?
No. Indoor air handlers are sold separately unless specifically included in a package configuration.
Can this system control multiple rooms independently?
Yes. This condenser supports up to three compatible indoor units for independent room-by-room comfort.
Does this system provide both heating and cooling?
Yes. This is a heat pump system that provides year-round comfort.
Can I install this system myself?
The system is designed for DIY installation when used with compatible MRCOOL® QuickConnect® components.
Shipping Information
Free shipping is available on qualifying MRCOOL orders over $1,000 within the 48 contiguous United States.
Freight & Delivery Policy
Please inspect your shipment immediately upon delivery and note any visible damage before signing.
