System Highlights
- Compact Plus Balanced Zoning: Three matched 9K cassettes at 400 sq. ft. each, plus an 18K cassette at up to 800 sq. ft.
- Flush Ceiling Integration: Low-profile cassettes fit between 16" joists for a clean architectural finish — no ductwork, no wall penetrations.
- Maximum Expansion Headroom: The 55K condenser supports up to six zones, leaving two ports open for future handlers.
- True DIY Installation: Patented pre-charged Quick Connect® line sets eliminate vacuuming, charging, and professional trade labor. Every line set in this kit includes the DIYPro® cable.
- Elevation Filter Access: The panel lowers on demand so filters can be cleaned without dismantling the unit.
- Smart Control: Wireless remotes, the SmartHVAC app for iOS and Android, plus Amazon Alexa and Google Assistant support out of the box.
What's Included
- 1 × DIY-MULTI6-55HP230D-O — 55K BTU Multi-Zone Condenser, 230V (6-zone capable)
- 3 × DIYCASSETTE09HP-230D25-O — 9K BTU OuttaSight® One-Way Ceiling Cassette, 230V
- 1 × DIYCASSETTE18HP-230D25-O — 18K BTU OuttaSight® One-Way Ceiling Cassette, 230V
- 3 × Pre-charged 25 ft 1/4" × 3/8" Quick Connect® line sets with DIYPro® cable (Zones 1–3)
- 1 × Pre-charged 25 ft 1/4" × 1/2" Quick Connect® line set with DIYPro® cable (Zone 4)
- Wireless remotes, mounting hardware, and installation documentation
Condenser Specifications — DIY-MULTI6-55HP230D-O
| Cooling / Heating Capacity | 52,000 BTU / 55,000 BTU |
|---|---|
| Tonnage | 4.6 |
| Zone Capacity | 6 (4 used in this kit) |
| Electrical | 208–230V, 1 Phase, 60 Hz |
| Refrigerant | R-454B (pre-charged) |
| Compressor / Inverter | Rotary / DC |
| Max Total Line Set Length | 221.4 ft |
Zone Configuration
| Zone | Model | Capacity & Coverage |
|---|---|---|
| Zone 1 | DIYCASSETTE09HP-230D25-O | 9,000 BTU — up to 400 sq. ft. |
| Zone 2 | DIYCASSETTE09HP-230D25-O | 9,000 BTU — up to 400 sq. ft. |
| Zone 3 | DIYCASSETTE09HP-230D25-O | 9,000 BTU — up to 400 sq. ft. |
| Zone 4 | DIYCASSETTE18HP-230D25-O | 18,000 BTU — up to 800 sq. ft. |
Cassettes measure 50.31"W × 13.19"D × 8.98"H and weigh 45 lbs each. Air flow is 1-Way with Swing Technology and reusable filtration.
Engineering & Warranty
- Gold Fin® Corrosion Protection against humidity and coastal salt exposure.
- DC Inverter Drive scales output to match thermal load.
- R-454B Refrigerant — more efficient and eco-friendly than R-410A.
- Certifications: Intertek listed, UL Listed, ETL Listed, ENERGY STAR® certified, AHRI certified.
- Warranty: 5-year parts and 7-year compressor coverage, eligible for the MRCOOL® Care Program.
Shipping restrictions: Ceiling cassettes cannot be shipped to Guam, Puerto Rico, or the U.S. Virgin Islands.
Proposition 65 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.
Proposition 65 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.
Download the MRCOOL Brochure
Get the full official MRCOOL DIY 5th Generation Brochure PDF — specs, lineup, and details.
