System Highlights
- Twin Bedroom Plus Twin Plus One Zoning: Two matched 9K wall mount air handlers at 400 sq. ft. each, two matched 12K units at 550 sq. ft. each, and an 18K unit at up to 1,000 sq. ft.
- Classic Wall Mount Design: Slim, low-profile indoor units that mount high on the wall for unobtrusive, effective airflow.
- Expansion Headroom: The 55K condenser supports up to six zones, leaving one port open for a future handler.
- 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.
- 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)
- 2 × DIY-09-HP-WMAH-230D25-O — 9K BTU Wall Mount Air Handler, 230V
- 2 × DIY-12-HP-WMAH-230D25-O — 12K BTU Wall Mount Air Handler, 230V
- 1 × DIY-18-HP-WMAH-230D25-O — 18K BTU Wall Mount Air Handler, 230V
- 4 × Pre-charged 25 ft 1/4" × 3/8" Quick Connect® line sets with DIYPro® cable (9K/12K zones)
- 1 × Pre-charged 25 ft 1/4" × 1/2" Quick Connect® line set with DIYPro® cable (18K zone)
- 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 (5 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 | DIY-09-HP-WMAH-230D25-O | 9,000 BTU — up to 400 sq. ft. |
| Zone 2 | DIY-09-HP-WMAH-230D25-O | 9,000 BTU — up to 400 sq. ft. |
| Zone 3 | DIY-12-HP-WMAH-230D25-O | 12,000 BTU — up to 550 sq. ft. |
| Zone 4 | DIY-12-HP-WMAH-230D25-O | 12,000 BTU — up to 550 sq. ft. |
| Zone 5 | DIY-18-HP-WMAH-230D25-O | 18,000 BTU — up to 1,000 sq. ft. |
Zones 1–4 use 1/4" liquid × 3/8" suction line sets. Zone 5 uses 1/4" liquid × 1/2" suction.
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.



