MRCOOL
MRCOOL® 18k DIY 5th Generation 3 Zone Multi-Zone Mini-Split Condenser 230v
1.5 Ton | SEER2 23.9 | R-454B | 208/230V
- 18000 BTU cooling capacity
- Up to 23.9 SEER2 rated efficiency
- Rotary compressor
- Uses R-454B refrigerant
Key Specifications
Product Overview
We’re excited to introduce the 5th Generation MRCOOL® DIY® 18k BTU Multi-Zone Ductless Mini-Split Condenser—our most advanced and convenient comfort solution yet. Designed for true do-it-yourself installation, this system eliminates the need for an HVAC professional. With an impressive SEER2 rating of 23.9 and HSPF2-4 rating of 10, it delivers energy savings while keeping your home comfortable year-round.
This condenser can support up to three air handlers and heat or cool a combined space of up to 750 square feet—ideal for spare bedrooms, home offices, or small apartments. At the core of its simplicity is our patented pre-charged Quick Connect® line set, now filled with R-454B, a high-efficiency, environmentally friendly refrigerant. This system is designed to be sustainable, user-friendly, and cost-effective.
Smart home compatibility is built in. With the Smart HVAC app, Amazon Alexa, or Google Home, you can manage temperature settings, set custom schedules, and monitor performance with ease—from anywhere, at any time. Total climate control is just a tap or voice command away.
Every DIY® condenser comes backed with exceptional peace of mind. Backed by a 7-year compressor and 5-year parts warranty, the MRCOOL® DIY® 18K system offers dependable protection, with included eligibility for the MRCOOL® Care Program.
With unmatched efficiency, eco-friendly design, and DIY simplicity, the MRCOOL® DIY® 5th Gen 18k BTU Multi-Zone system is the ultimate choice for personalized comfort.
Features
- Intertek listed 5031495
- Easy DIY installation
- Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit.
- Keep the included remote close by, and MRCOOL DIY®'s Follow Me® function will track the air temperature around you to ensure maximum comfort.
- The MRCOOL® Smart HVAC Controller® Module and App fully support Google Assistant & Amazon Alexa out of the box.
Additional specifications
| UPC | 840255587617 |
|---|---|
| Series | DIY 5th gen Multi-Zone Mini-splits |
| Refrigerant charge (oz) | 61.73 |
| Heating capacity (BTU/h) | 18000 |
| HSPF2 (region V) | 7.8 |
| Cycle (Hz) | 60 |
| Min circuit ampacity (A) | 16 |
| Max fuse / breaker (A) | 20 |
| Inverter | DC |
| Line set included (ft) | 25 |
| Max line set length (ft) | 172.2 |
| Aux heater included | No |
| Aux heater available | No |
| Wi-Fi capable | Yes |
| AHRI certified | Yes |
| ENERGY STAR certified | Yes |
| UL listed | Yes |
| ETL listed | Yes |
| Parts warranty (years) | 5 |
| Compressor warranty (yrs) | 7 |
| Shipping W x H x D (in) | 40.55 x 29.53 x 17.24 |
| Shipping weight (lbs) | 109.57 |
Documents
- Installation manual (PDF)
- Service manual (PDF)
- Remote manual (PDF)
- Brochure (PDF)
- Warranty (PDF)
- AHRI certificate (PDF)
- EnergyGuide label (PDF)
WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
Technical Specifications
Performance
| System Type | Mini Split Condenser |
|---|---|
| Capacity | 18000 BTU |
| Tonnage | 1.5 Ton |
| Compressor / Stages | Rotary |
| SEER2 | 23.9 |
| EER2 | 13 |
| HSPF2 | 10 |
| Sound Level | 60 dBA |
Electrical & Fuel
| Voltage | 208/230V |
|---|---|
| Phase | Single Phase |
| Refrigerant | R-454B |
| Connection Size | Liquid 1/4" / Suction 3/8" |
Physical & Certifications
| Dimensions (W x H x D) | 35.04 x 26.5 x 13.46 |
|---|---|
| Weight | 101.63 lb |
| Color / Finish | White |
Shipping & Delivery
Installation video
Published by MRCOOL. Watch the full walkthrough before you start, and follow the installation manual for this model — the video is a guide, not a substitute for it.
Manufacturer Warranty
Covered by MRCOOL's limited warranty. Warranty terms are set by MRCOOL and differ by product line — whether registration is required, and whether the installation has to be performed by a state-licensed HVAC contractor, is not the same across the range. In every case coverage depends on the unit being installed according to MRCOOL's instructions and all applicable codes and permits. MRCOOL's warranty document for this model is the controlling source; ask us and we'll send you the one that applies.
Professional Installation Recommended
Most HVAC equipment must be installed and connected by a licensed professional to remain safe, code-compliant, and eligible for manufacturer warranty coverage. If you're unsure about installation requirements, contact us before you order.
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