| Refrigerant type | R454B |
| System type | Multi-zone unit (outdoor) |
| BTU rated | 28,000 Btu/h cooling (range 7,200~32,000) |
| Power source | 208-230V, 1Ph, 60Hz |
| Dehumidification value (pnt/day) | 1.69 |
| Voltage range (V) | 187-253 |
| Refrigerant piping - liquid/gas side (inch) | 4x1/4" - 3x3/8"+1x1/2" |
| EER2 | 13 |
| SEER2 | 25 |
| Net/gross weight (lb) | 138.89/149.69 |
| Unit dimensions (WxDxH) | 37.24 x 16.14 x 31.89 in |
| Packing dimensions (WxDxH) | 42.91 x 19.68 x 34.84 in |
| Operation range - heating | -13~75°F |
| Operation range - cooling | -13~122°F |
| Minimum circuit ampacity (A) | 23 |
| Max fuse (A) | 25 |
| Max zones supported | 4 |
| Heating capacity (Btu/h) | 27,000 (range 8,400~29,000) |
| COP (W/W) | 3.8 |
| HSPF4 | 9.5 |
| HSPF5 | 7.4 |
| Rated current - RLA (A) | 9.2 (4~12) |
| Compressor model | KTM240D46UKT2 |
| Compressor type/brand | Rotary / GMCC |
| Compressor RLA (A) | 12.1 |
| Compressor input (W) | 2,045 |
| Refrigerant oil (oz) | VG74, 21 |
| Outdoor fan motor (qty/input/RLA) | 1 / 120W / 1.2A |
| Outdoor air flow (Max) (CFM) | 2,130.7 |
| Outdoor noise level (Max) (dB) | 61 |
| Refrigerant precharge (ft) | 100 |
| Additional refrigerant charge - liquid pipe (oz) | 84.66 |
| Design pressure (PSIG) | 550/340 |
| Max pipe length - all indoor units (ft) | 262.4 |
| Max pipe length - one indoor unit (ft) | 114.8 |
| Max height difference - indoor/outdoor (ft) | 49.2 |
| Max height difference - between indoor units (ft) | 33 |
Overview
Cooper&Hunter's CH-R28MES-230VO is a 28,000 Btu/h, 230V Regular Multi-Zone outdoor unit that brings efficient, personalized comfort to residential spaces. Designed to support up to four separate zones, it enables precise temperature management in multiple rooms, catering to individual preferences throughout your home.
Advanced inverter technology dynamically adjusts the compressor's performance to match the demands of each zone, achieving SEER2 ratings as high as 25. The unit uses eco-friendly R454B refrigerant with a lower Global Warming Potential (GWP) than standard refrigerants, and is engineered for durability with a compact, space-efficient design that simplifies installation.
Features
- Supports up to 4 zones
- Inverter technology for precise load matching and energy savings
- High-Frequency Racer Technology - compressor reaches max speed within 6 seconds on startup
- High-efficiency pipes (54 teeth) for improved heat exchange
- Intelligent Dusting Switch reverses the fan to clear debris from the coil
- R454B refrigerant with lower GWP
- 7-year compressor / 5-year parts standard warranty
What's Included
- C&H Regular 28,000 BTU Heat Pump
Specifications
| Refrigerant type | R454B |
| System type | Multi-zone unit (outdoor) |
| BTU rated | 28,000 Btu/h cooling (range 7,200~32,000) |
| Power source | 208-230V, 1Ph, 60Hz |
| Dehumidification value (pnt/day) | 1.69 |
| Voltage range (V) | 187-253 |
| Refrigerant piping - liquid/gas side (inch) | 4x1/4" - 3x3/8"+1x1/2" |
| EER2 | 13 |
| SEER2 | 25 |
| Net/gross weight (lb) | 138.89/149.69 |
| Unit dimensions (WxDxH) | 37.24 x 16.14 x 31.89 in |
| Packing dimensions (WxDxH) | 42.91 x 19.68 x 34.84 in |
| Operation range - heating | -13~75°F |
| Operation range - cooling | -13~122°F |
| Minimum circuit ampacity (A) | 23 |
| Max fuse (A) | 25 |
| Max zones supported | 4 |
| Heating capacity (Btu/h) | 27,000 (range 8,400~29,000) |
| COP (W/W) | 3.8 |
| HSPF4 | 9.5 |
| HSPF5 | 7.4 |
| Rated current - RLA (A) | 9.2 (4~12) |
| Compressor model | KTM240D46UKT2 |
| Compressor type/brand | Rotary / GMCC |
| Compressor RLA (A) | 12.1 |
| Compressor input (W) | 2,045 |
| Refrigerant oil (oz) | VG74, 21 |
| Outdoor fan motor (qty/input/RLA) | 1 / 120W / 1.2A |
| Outdoor air flow (Max) (CFM) | 2,130.7 |
| Outdoor noise level (Max) (dB) | 61 |
| Refrigerant precharge (ft) | 100 |
| Additional refrigerant charge - liquid pipe (oz) | 84.66 |
| Design pressure (PSIG) | 550/340 |
| Max pipe length - all indoor units (ft) | 262.4 |
| Max pipe length - one indoor unit (ft) | 114.8 |
| Max height difference - indoor/outdoor (ft) | 49.2 |
| Max height difference - between indoor units (ft) | 33 |
Details
Overview
Cooper&Hunter's CH-R28MES-230VO is a 28,000 Btu/h, 230V Regular Multi-Zone outdoor unit that brings efficient, personalized comfort to residential spaces. Designed to support up to four separate zones, it enables precise temperature management in multiple rooms, catering to individual preferences throughout your home.
Advanced inverter technology dynamically adjusts the compressor's performance to match the demands of each zone, achieving SEER2 ratings as high as 25. The unit uses eco-friendly R454B refrigerant with a lower Global Warming Potential (GWP) than standard refrigerants, and is engineered for durability with a compact, space-efficient design that simplifies installation.
Features
- Supports up to 4 zones
- Inverter technology for precise load matching and energy savings
- High-Frequency Racer Technology - compressor reaches max speed within 6 seconds on startup
- High-efficiency pipes (54 teeth) for improved heat exchange
- Intelligent Dusting Switch reverses the fan to clear debris from the coil
- R454B refrigerant with lower GWP
- 7-year compressor / 5-year parts standard warranty
What's Included
- C&H Regular 28,000 BTU Heat Pump
Manuals
Submittals
Compatibility
Frequently Asked Questions
Who do you sell to?
We sell exclusively to licensed HVAC contractors and industry professionals. Professional installation by a licensed technician is recommended to ensure proper installation, system performance, code compliance, and maximum manufacturer warranty coverage.
What brands do you carry?
We specialize in high performance brands like Cooper and Hunter along with ductless and mini split systems that meet California low GWP and energy compliance standards. We also stock trusted installation and service brands including NAVAC, RectorSeal, Fieldpiece, Armbridge, Olmo, and Diversitech.
Do you stock equipment locally?
Yes. We have a ton of equipment and accessories in stock across the Bay Area and Sacramento, available for local pickup or freight shipping. More locations coming soon.
Can I get help sizing a system?
Absolutely. We help contractors with equipment selection, line set sizing, refrigerant matchups, and other technical questions. Reach out via phone or email for support.
Do you offer volume discounts?
Yes. We offer contractor pricing and volume breaks for bulk orders. Reach out directly if you're planning a multi-unit install or need project pricing.
Do you help with warranty claims?
Yes, you will need to first reach out to the Cooper & Hunter Technical Support line 1 800-977-0722 to go through troubleshooting, and if it is determined to be a defective unit, we will work with the manufacturer and you as the customer to source you a replacement unit under warranty. If it is determined to need replacement parts, you as the customers will work with Cooper & Hunter to source replacement parts.
Can I buy online?
Yes. As long as you have a licensed contractor account with us, you can place orders online for delivery or pickup at any of our branch locations.
What makes CoolMan different?
We’re not just a supplier — we’re a partner. We know the ductless business, we understand California codes, and we move fast to help you win jobs and keep clients happy.
