System Highlights
- Three Matched 6K Zones: Each cassette covers up to 200 sq. ft. and runs on its own schedule and setpoint — ideal for three similarly sized rooms.
- Truly Out of Sight: Low-profile cassettes sit flush with the ceiling, leaving walls and floor plans completely open.
- Expansion Headroom: The 27K BTU condenser supports up to four zones, leaving a fourth port available for future growth.
- True DIY Installation: Patented pre-charged Quick Connect® line sets eliminate vacuuming and professional HVAC assistance. Every line set in this kit includes the DIYPro® cable, so no electrical conduit is required.
- Easy Filter Access: The Elevation function lowers the panel so filters can be cleaned without a ladder gymnastics routine.
- Smart Control: Wireless remote, SmartHVAC app for iOS and Android, plus Amazon Alexa and Google Assistant support out of the box.
Built for homeowners who want balanced, even comfort across three comparable rooms without surrendering wall space — with a fourth zone in reserve.
What’s Included
- 1 × DIY-MULTI4-27HP230D-O — 27K BTU Multi-Zone Condenser, 230V (4-zone capable)
- 3 × DIYCASSETTE06HP-230D25-O — 6K BTU OuttaSight® One-Way Ceiling Cassette, 230V
- 3 × Pre-charged 1/4" × 3/8" Quick Connect® line sets with DIYPro® cable — lengths selected above
- Wireless remotes, mounting hardware, and installation documentation
Condenser Specifications — DIY-MULTI4-27HP230D-O
| SEER2 / EER2 | 23 / 12 |
|---|---|
| HSPF2-4 / HSPF2-5 | 9.5 / 7 |
| Cooling / Heating Capacity | 26,000 BTU / 26,000 BTU |
| Zone Capacity | 4 (3 used in this kit) |
| Electrical | 208–230V, 1 Phase, 60 Hz |
| Max Fuse Breaker / MCA | 25A / 23A |
| Refrigerant | R-454B, 84.66 oz (pre-charged) |
| Compressor / Inverter | Rotary / DC |
| Sound Level | 61 dBA |
| Max Total Line Set Length | 221.4 ft |
| Net Dimensions (D×H×W) | 16.14" × 31.89" × 37.24" |
| Net Weight | 140.21 lbs |
Cassette Specifications — DIYCASSETTE06HP-230D25-O (×3)
| Capacity / Coverage | 6,000 BTU — up to 200 sq. ft. per zone |
|---|---|
| Air Flow Direction | 1-Way |
| CFM | 341 / 294 / 259 / 235 / 235 |
| Sound Level | 35.5 dBA (23.5 low / 46.5 high) |
| Blower Motor RPM | 1024 / 944 / 784 |
| Line Set Sizes | 1/4" Liquid • 3/8" Suction |
| Electrical | 208–230V, 1 Phase, 60 Hz — 15A breaker, 3A MCA |
| Rated Load | 0.8 |
| Filter | Reusable, Elevation-function access |
| Net Dimensions (D×H×W) | 13.19" × 8.98" × 50.31" |
| Net Weight | 45 lbs each |
Line Set Options
All three zones use the 1/4" × 3/8" family. Every option below is pre-charged with R-454B and includes the DIYPro® cable.
| Length | Model |
|---|---|
| 25 ft | DIY25-1438C-O |
| 35 ft | DIY35-1438C-O |
| 50 ft | DIY50-1438C-O |
Engineering & Warranty
- Gold Fin® Corrosion Protection: Protective coating shields the condenser coil against humidity and coastal salt exposure.
- DC Inverter Drive: The variable-speed rotary compressor scales output to match thermal load, avoiding hard current-draw spikes.
- R-454B Refrigerant: Next-generation refrigerant with improved efficiency and lower environmental impact than R-410A.
- Certifications: Intertek listed 5031495, UL Listed, ETL Listed, ENERGY STAR® certified, AHRI certified.
- Warranty: 5-year parts and 7-year compressor coverage, with eligibility 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.
