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R-410A Refrigerant

DIY Multi-Zone 2-Zone 18K BTU Condenser, 4th Gen Series, DIY-MULTI2-18HP230C

DIY Multi-Zone 2-Zone 18K BTU Condenser, 4th Gen Series, DIY-MULTI2-18HP230C

Regular price $1,499.00
Sale price $1,499.00 Regular price $1,903.73
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⛔ Discontinued
🔄 Replaced by 5th Gen

📦

🚨 Check out this alternative:

Grade A - 18k BTU 21 SEER MrCool DIY Ductless Heat Pump Condenser - 4th Generation - 2 Zone 240v (S&D)

View Product $1,399.00

SKUDIY-MULTI2-18HP230C

TypeMulti-Zone Condenser

Refrigerant Type: R-410A

❌ Out of Stock

This product is currently unavailable.

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PRODUCT DESCRIPTION

MRCOOL DIY 18k BTU 2-Zone Ductless Heat Pump Condenser – 4th Generation (DIY-MULTI2-18HP230)

Efficient, Multi-Zone Heating and Cooling You Can Install Yourself

Experience unmatched comfort and energy savings with the 4th Generation MRCOOL DIY 18,000 BTU 2-Zone Ductless Heat Pump Condenser (Model: DIY-MULTI2-18HP230). Designed for homeowners and professionals seeking a high-performance, DIY-friendly HVAC solution, this advanced system offers 21 SEER energy efficiency, dual-zone support, and year-round climate control—even in sub-zero temperatures.

This condenser powers up to two MRCOOL wall-mounted air handlers and is ideal for homes, garages, workshops, additions, and more. With heating performance down to -13°F, it’s built to tackle harsh winters and hot summers alike.


🔧 DIY Installation Made Easy

Skip the HVAC technician and install it yourself with confidence. The MRCOOL DIY system features Pre-Charged Quick Connect® Line Sets that come pre-loaded with R-410A refrigerant. These connections allow for secure, tool-free installation using just basic hand tools—no vacuum pump, gauges, or certifications required.


🏡 Perfect for Multi-Zone Climate Control

Pair this 2-zone condenser with your choice of:

  • (2) x 9,000 BTU Wall-Mounted Air Handlers

  • (1) x 9,000 BTU + (1) x 12,000 BTU Wall-Mounted Air Handlers

Pre-charged line sets are available in 16', 25', and 35' lengths (sold separately), allowing for a flexible, custom fit to your space.


💡 Key Features & Benefits

21 SEER Efficiency Rating
Reduce your utility bills with ultra-efficient performance and advanced DC inverter technology.

Built for Harsh Climates
Provides dependable heating in temperatures as low as -13°F, making it a great choice for cold-weather regions.

Gold Fin® Condenser Coating
Corrosion-resistant and built to last, even in coastal or high-moisture environments.

Environmentally Friendly
Uses R-410A refrigerant for high performance with lower environmental impact.

Quiet, Powerful Operation
Low-noise design keeps your space comfortable without disruption.

Industry-Leading Warranty
Includes a 7-year compressor warranty, 5-year parts warranty, and the option to register for a limited lifetime compressor warranty.


🛠️ Model Specifications:

  • Model Number: DIY-MULTI2-18HP230

  • BTU Rating: 18,000 BTU

  • Zones Supported: 2

  • Voltage: 240V

  • Refrigerant Type: R-410A

  • SEER Rating: Up to 21

  • Line Sets Required: (2) pre-charged Quick Connect® line sets (sold separately)


Why Choose MRCOOL DIY Direct?

As the USA’s leading independent MRCOOL dealer, MRCOOL DIY Direct offers genuine MRCOOL systems with expert support, fast shipping, and competitive pricing. We’re a family-operated business based in Joplin, Missouri, proudly helping homeowners across the country achieve comfort on their own terms.


💬 Have Questions?

We’re here to help you select the right air handler sizes, line set lengths, and accessories for your setup. Call us today to speak with our expert team and get started with your DIY mini split installation—and start saving on heating and cooling the smart way.

SPECIFICATION & DIMENSIONS

Product Dimensions 35.04"W x 13.46"D x 26.50"H
Product Weight 100.53 lbs
SEER2 21.2
EER2 12.5
HSPF2 9.6
SEER 21
EER 12.5
HSPF hspf4/hspf5 : 10.6/8.6
CFM 1764.71
Cooling Capacity 18,000 BTU
Heating Capacity 19,000 BTU
Voltage Requires a minimum of 208V-230V/60HZ/18-25A (please check your home meets this electrical requirement prior to purchase)
Phase 1
Cycle 60Hz
Min Circuit Ampacity 18A
Color White
Zone Capacity 2
Refrigerant Type R-410A
Refrigerant Volume 65.26 oz
Decibel Rating 59 dBA
Inverter Yes
Min Ambient Cool 5°F ~ 122°F
Min Ambient Heat -13°F ~ 75.2°F
Max Lineset Length 123 ft TOTAL
Liquid Line Size 1/4in
Suction Line Size 3/8in
Compressor Motor Type Twin - Rotary
Condenser Fan Motor RPM 750/600/500
Wifi Compatibility Yes
App Compatibility Yes
Compatible with IOS
Android
Includes Remote
Batteries
Warranty Limited Lifetime on the Compressor
5-year Parts on Base Parts

WHAT'S INCLUDED

  • Condenser

Rated 4.7 / 5 Stars
4700+ Verified Reviews

Comfort That Speaks for Itself

See why homeowners and pros alike trust MRCOOL DIY systems to deliver comfort, savings, and easy installation.

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee

I never thought I’d install my own HVAC system, but MRCOOL made it possible. The instructions were easy, and the pre-charged lines saved me from hiring a tech. Cools my garage workshop perfectly!

Jason R., North Carolina

Our MRCOOL mini-split runs really quiet — you can barely tell it’s on. Our electric bill dropped about 35% this summer. Very impressed with the efficiency

Megan L., Arizona

Installed this in my detached office. Took me a Saturday morning and a friend to lift the outdoor unit. Works flawlessly — heats in winter and cools in summer.

Daniel P., Texas

I swapped my old central unit for two MRCOOL DIY mini-splits. Same comfort, way lower bills. The inverter technology really makes a difference.

Jennifer C., Florida

Had a small question during installation and Vanessa picked up right away. They walked me through it step by step — best customer service I’ve had in years.

Chris B., Ohio

Keeps our sunroom comfortable in 100°F summers and comfy in the winter. The heat pump feature is amazing — one system for both heating and cooling!

Angela K., Kentucky

I’ve remodeled a few homes, and MRCOOL DIY systems are a game-changer. No need for HVAC pros or special tools — everything is plug-and-play.

Brandon S., Tennessee