System Highlights
- Graduated Zone Sizing: A 9K cassette (up to 400 sq. ft.), a 12K cassette (up to 550 sq. ft.), and an 18K cassette (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.
- Substantial Expansion Headroom: The 48K condenser supports up to six zones, leaving three 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-MULTI6-48HP230D-O — 48K BTU Multi-Zone Condenser, 230V (6-zone capable)
- 1 × DIYCASSETTE09HP-230D25-O — 9K BTU OuttaSight® One-Way Ceiling Cassette, 230V
- 1 × DIYCASSETTE12HP-230D25-O — 12K BTU OuttaSight® One-Way Ceiling Cassette, 230V
- 1 × DIYCASSETTE18HP-230D25-O — 18K BTU OuttaSight® One-Way Ceiling Cassette, 230V
- 2 × Pre-charged 1/4" × 3/8" Quick Connect® line sets with DIYPro® cable (for the 9K and 12K zones)
- 1 × Pre-charged 1/4" × 1/2" Quick Connect® line set with DIYPro® cable (for the 18K zone)
- Wireless remotes, mounting hardware, and installation documentation
Condenser Specifications — DIY-MULTI6-48HP230D-O
| SEER2 / EER2 | 21.8 / 12 |
|---|---|
| HSPF2-4 / HSPF2-5 | 10 / 7.8 |
| Cooling / Heating Capacity | 43,000 BTU / 48,000 BTU |
| Tonnage | 4.0 |
| Zone Capacity | 6 (3 used in this kit) |
| Electrical | 208–230V, 1 Phase, 60 Hz |
| Max Fuse Breaker / MCA | 45A / 40A |
| Refrigerant | R-454B, 148.15 oz (pre-charged) |
| Compressor / Inverter | Rotary / DC |
| Sound Level | 64 dBA |
| Max Total Line Set Length | 221.4 ft |
| Net Dimensions (D×H×W) | 16.34" × 52.48" × 37.48" |
| Net Weight | 223.77 lbs |
Zone Configuration
| Specification | Zone 1 — 9K | Zone 2 — 12K | Zone 3 — 18K |
|---|---|---|---|
| Coverage Area | Up to 400 sq. ft. | Up to 550 sq. ft. | Up to 800 sq. ft. |
| Line Set Sizes | 1/4" Liquid • 3/8" Suction | 1/4" Liquid • 3/8" Suction | 1/4" Liquid • 1/2" Suction |
| Dimensions & Weight | 50.31"W × 13.19"D × 8.98"H (45 lbs) | 50.31"W × 13.19"D × 8.98"H (45 lbs) | 50.31"W × 13.19"D × 8.98"H (45 lbs) |
Note: the 18K zone uses a different line set size (1/4" × 1/2") than the 9K and 12K zones (1/4" × 3/8").
Line Set Options
| Length | 9K & 12K Zones (1/4" x 3/8") | 18K Zone (1/4" x 1/2") |
|---|---|---|
| 25 ft | DIY25-1438C-O | DIY25-1412C-O |
| 35 ft | DIY35-1438C-O | DIY35-1412C-O |
| 50 ft | DIY50-1438C-O | DIY50-1412C-O |
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 5031495, 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.
