Copeland is leading the charge with innovative technologies that enable the development of hydronic heat pumps and heat pump water heaters that deliver sustainable, reliable comfort.

Heat Pump Water Heater Compression Solutions
Boilers are essential in commercial buildings, providing a reliable heat source and hot water for daily operations and occupant comfort. Today, natural gas and oil are the most common fuel sources for commercial boilers, but decarbonization initiatives are driving the push toward electrification using heat pump water heaters. Copeland compression platforms are engineered to help boiler manufacturers decarbonize legacy fossil-fuel systems.

Hydronic Heat Pump Compression Solutions
Legacy residential hydronic heating systems use gas-fired boilers to generate hot water distributed to radiators, baseboards and underfloor piping. Hydronic heat pumps (air-to-water) are poised to decarbonize these systems, providing year-round cooling and heating, and often domestic hot water (DHW). Copeland compression technologies deliver water-leaving temperatures needed to achieve desired comfort and hot water levels, while continuously maximizing system efficiencies.
Copeland supports the electric water heating market with cutting-edge compression technologies. Fixed- and variable-speed platforms are equipped with enhanced vapor injection (EVI) technologies to enable original equipment manufacturers (OEMs) to achieve sufficient water temperatures in low-ambient conditions.
Enhanced vapor injection technology
Copeland’s fixed- and variable-speed scroll platforms are equipped with enhanced vapor injection (EVI) technology, which enables OEMs to achieve sufficient leaving water temperatures in low-ambient conditions. EVI technology, combined with optimized compressor operating envelopes, delivers best-in-class hydronic heating performance.
Residential & Commercial Products
- YAW
- YHV
- YHW
- YAI
- YHI
- ZB
- ZH
- 4MTLS

Copeland YAW variable-speed scroll compressor with EVI
- Optimized operating envelope for water heating and low ambient conditions
- Enables 140 °F water temperatures
- Optimized for use with lower-GWP R-454B
- Available in smaller (2-, 3-, 4-, 5-ton) and larger (10-, 15- 20-, 25-ton) tonnages

Copeland YHV variable-speed compressor
- Optimized operating envelope for water heating
- Enables 160 °F water temperatures with R-454C; 180 °F with R-290
- Dual-refrigerant compatibility with R-454C and R-290 (for EU and future U.S.)

Copeland YHW variable-speed scroll with EVI (R-454B)
- Optimized operating envelope for water heating
- Enables 140 °F water temperatures

Copeland YAI fixed-speed scroll with EVI
- Optimized operating envelope for water heating and low ambient conditions
- Enables 140 °F water temperatures
- Optimized for use with lower-GWP R-454B
- Available in larger tonnages (12-40 ton) tonnages

Copeland YHI fixed-speed scroll with EVI (R-454B)
- Optimized operating envelope for water heating
- Enables 140 °F water temperatures
- EVI combined with fixed speed is similar to having a second stage of capacity

Copeland ZB compressor platform
- Designed for commercial heat pump water heaters (for DHW)
- Optimized for A1 R-513A refrigerant intended as a direct replacement R-134A
- Complies with the sub-700 GWP requirement
- Enables 150 °F water temperatures

Copeland ZH compressor platform
- Designed for commercial heat pump water heaters (for DHW)
- Optimized for A1 R-513A refrigerant, intended as a direct replacement R-134A
- Complies with the sub-700 GWP requirement
- Enables 165 °F water temperatures

Copeland 4MTLS transcritical CO₂ compressor
- Designed for commercial heat pump water heaters (for DHW)
- Leverages sustainable, ultra-low-GWP natural refrigerant CO2
- Enables +200 °F water temperatures