ECO™ Hybrid Dual Fuel Hydronic System
Integrating an air-to-water heat pump within a boiler hydronic heating system
The New ECO Hybrid is a dual-fuel hydronic system that integrates our ECO™ HP air-to-water heat pump with a high-efficiency boiler, providing optimal heating performance. It automatically switches between the heat pump and boiler based on outdoor temperatures to maximize energy efficiency and comfort. Ideal for retrofits and new installations, the ECO HP helps homeowners reduce their carbon footprint and may reduce energy costs while maintaining reliable heat.
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Product Features
Achieves efficiencies up to 5.37 COP for optimal savings
Heat pump uses R32 refrigerant for improved sustainability
Use for radiant heating and domestic hot water
Easy-Up manifold included and accessory kit available
Low decibel, quiet operation plus compact design
Minimal maintenance, rebates and tax credits available in some areas
See it in Action
Product Specifications
| Capacity | 19.04–41.29 MBH - ECOHP-41 20.2–49.48 MBH - ECOHP-48 21.94–54.25 MBH - ECOHP-55 |
| Efficiency | 4.96–5.37 COP - ECOHP-41 4.60–5.29 COP - ECOHP-48 4.50–5.06 COP - ECOHP-55 |
| Power Input | 19.04–41.29 MBH - ECOHP-41 4.60–5.29 COP - ECOHP-48 21.94–54.25 MBH - ECOHP-55 |
| Current Input | 19.04–41.29 MBH - ECOHP-41 20.2–49.48 MBH - ECOHP-48 21.94–54.25 MBH - ECOHP-55 |
| Delivery Temp | 19.04–41.29 MBH - ECOHP-41 4.50–5.06 COP - ECOHP-48 21.94–54.25 MBH - ECOHP-55 |
| Outdoor Temp | 19.04–41.29 MBH - ECOHP-41 20.2–49.48 MBH - ECOHP-48 21.94–54.25 MBH - ECOHP-55 |
| Type | R-32 |
| Charge | 4.04 LBS |
| Pressure Low Side | 377.1 PSIG |
| Pressure High Side | 623.6 PSIG |
| Type | Rotary |
| Quantity | 1 |
| Speed | 24-92 RPS |
| Flow | 12.1 GPM |
| Max Temp | 149 Deg°F |
| Piping Conn. | 1 Inch |
| Pressure Drop @ 12.1 rpm | 3.9 PSI |
| ODU Power | 208–230/1/6 V/Ph/Hz |
| ODU Fan Motor | 1.3 A |
| ODU Compressor | 26 A |
| ODU MCA 41/48/55 | 25/26/27 A |
| ODU MOPD | 30 A |
| ODU SCCR | 5 kA |
| IDU Power | 110-120/1/60 V/Ph/Hz |
| IDUMCA | 1.5 A |
| IDUMOPD | 15 A |
| IDU Net | 69 LBS |
| IDU Shipping | 78 LBS |
| ODU Net | 212 LBS |
| ODU Shipping | 255 LBS |
| Type | Brushless DC |
| Quantity | 1 |
| Input | 170 W |
| Speed | 200-730 RM |
In The News
Feature Article
Decarbonization and Energy Efficiency: The Role of Heat Pumps and Boilers in a Changing Industry
A feature article highighting how hybrid systems combining heat pumps and boilers help achieve greater energy efficiency and support decarbonization goals in the HVAC industry.
Feature Article
Air-to-water heat pumps — a game changer for the hydronics industry
A feature article discussing the rising role of air-to-water heat pumps in the hydronics market, highlighting the benefits of Weil-McLain’s ECO Hybrid system for energy efficiency and system flexibility.
News Article
Weil-McLain air-to-water heat pump
News coverage introducing Weil-McLain’s ECO Hybrid system, emphasizing its role in delivering efficient, dual-fuel heating solutions for residential and light commercial applications.
News Article
Residential Heating Showcase
Weil-McLain’s ECO Hybrid system is featured in ACHR News' Residential Heating Showcase, spotlighting its energy-efficient performance and compatibility with both new construction and retrofits.
News Article
Weil-McLain® Introduces ECO™ HP Air-to-Water Heat Pump for Hybrid Dual-Fuel Hydronic Heating
A news post announcing the launch of the ECO HP air-to-water heat pump, detailing its application for sustainable hydronic heating in homes and small businesses.
News Article
Weil-McLain ECO HP Air-to-Water Heat Pump
An announcement covering the key features of the new ECO HP, including high-efficiency operation, dual-fuel capabilities, and easy integration with existing boiler systems.
Feature Article
Overview Video: Weil-McLain ECO Hybrid Dual Fuel Hydronic System Overview
An article featuring Weil-McLain’s new ECO Hybrid overview video, showcasing the system’s innovative dual-fuel design and energy-saving benefits.
News Article
Weil-McLain air-to-water heat pump
A news announcement highlighting the launch of Weil-McLain’s ECO HP, designed to meet the growing demand for sustainable hydronic heating solutions.
News Article
Weil-McLain Introduces Air-to-Water Heat Pump for Hybrid Dual-Fuel Hydronic Heating
Coverage of the new ECO HP air-to-water heat pump introduction, emphasizing Weil-McLain’s commitment to efficient, modern heating technologies.
News Article
Weil-McLain launches dual-fuel heat pumps for residential, light commercial applications
A news story detailing Weil-McLain’s ECO HP launch, focusing on its dual-fuel capabilities and the system’s relevance for renewable energy markets.
News Article
Weil-McLain introduces ECO HP Air-to-Water Heat Pump for hybrid dual-fuel hydronic heating
Announcement of the ECO HP system, underlining its high-efficiency performance and flexible integration into existing boiler-based hydronic systems.
News Article
Weil-McLain: ECO HP Air-to-Water Heat Pump
FacilitiesNet highlights the key features of the ECO HP, noting its ability to improve energy efficiency and heating reliability where it's needed.
News Article
ECO HP AIR-TO-WATER ELECTRIC HEAT PUMP
An overview of the ECO HP’s electric heat pump capabilities, promoting its advantages in decarbonizing and modernizing home heating systems.
News Article
Weil-McLain introduces ECO HP Air-to-Water Heat Pump for hybrid hydronic heating
Indoor Comfort Marketing covers the launch of the ECO HP, emphasizing its role in offering contractors and homeowners a reliable, energy-smart heating option.
News Article
Heat Pump Combines Efficiency with Reliability
Retrofit Magazine profiles the ECO HP, focusing on how the system blends high energy efficiency with proven reliability for renovation and retrofit projects.