
EXINDA Heat Pumps and ERVs Support Year-Round Comfort
This four-storey rehabilitation and long-term care center in Duluth, Minnesota requires continuous heating, cooling and fresh air for approximately 90 patient rooms and shared spaces. Because the facility operates 24/7, individual equipment maintenance cannot interrupt essential building services.
EXINDA Heat Pumps and ERVs Support Year-Round Comfort
This four-storey rehabilitation and long-term care center in Duluth, Minnesota requires continuous heating, cooling and fresh air for approximately 90 patient rooms and shared spaces. Because the facility operates 24/7, individual equipment maintenance cannot interrupt essential building services.


5 EXINDA 24 Ton R32 Commercial Inverter Air-to-Water Heat Pumps are arranged in a four-duty, one-standby configuration. EVI inverter scroll technology, low-ambient operation and modular staging allow capacity to follow actual demand, while the existing boilers remain available for extreme winter conditions and emergency backup.
36 EXINDA 153 CFM Top-Port ERVs provide balanced ventilation to ordinary patient rooms and non-clinical areas. Constant airflow, automatic balancing, ECM motors and energy recovery support reliable fresh-air delivery while reducing the additional heating and cooling load created by outdoor air.
5 EXINDA 24 Ton R32 Commercial Inverter Air-to-Water Heat Pumps are arranged in a four-duty, one-standby configuration. EVI inverter scroll technology, low-ambient operation and modular staging allow capacity to follow actual demand, while the existing boilers remain available for extreme winter conditions and emergency backup.
36 EXINDA 153 CFM Top-Port ERVs provide balanced ventilation to ordinary patient rooms and non-clinical areas. Constant airflow, automatic balancing, ECM motors and energy recovery support reliable fresh-air delivery while reducing the additional heating and cooling load created by outdoor air.

Together, EXINDA’s water-side heat pumps and air-side ERVs are designed to operate as a fully coordinated HVAC system, where hydronic heating and cooling and ventilation work in parallel rather than as separate subsystems. The water loop provides stable thermal energy distribution across multiple heat pump units, while the ERVs independently manage fresh air supply, exhaust, and heat recovery. This separation of functions allows each system to perform at optimal efficiency while still responding to the same building-wide control strategy.
This integrated approach significantly improves operational flexibility and system resilience. The modular heat pump configuration allows staged operation based on real-time load demand, while the ERVs ensure consistent indoor air quality regardless of thermal load fluctuations. Together, they help maintain stable temperature and humidity conditions, which is especially important in healthcare environments where patient comfort, recovery conditions, and environmental stability are critical.
At the system level, this solution demonstrates EXINDA’s capability to deliver fully integrated heating, cooling, and energy recovery ventilation for continuously occupied healthcare buildings. The design emphasizes long-term maintainability, simplified hydraulic and airside coordination, and reduced operational complexity for facility teams. It reflects a lifecycle-oriented approach that supports reliable performance, energy efficiency, and serviceability in demanding medical environments.
Testimonials
Rachel Bennett
Director of Resident Care
“Temperature and fresh-air conditions now feel more consistent across patient rooms and common areas. For a facility operating around the clock, that stability makes a noticeable difference for both residents and staff.”
Daniel Brooks
Mechanical Project Manager
“The EXINDA heat pumps and ERVs were straightforward to coordinate with the building systems. The modular hydronic design simplified commissioning, while the decentralized ERVs made it easier to balance ventilation across patient rooms and shared areas.”
Kevin Marshall
Building Services Engineer
“What stood out was the combination of low-ambient heat pump operation and balanced energy-recovery ventilation. The two systems perform separate functions but work together effectively to support comfort, fresh air and year-round operation.”
Partner With EXINDA
Global HVAC Manufacturer & Customized HVAC Solutions Provider
EXINDA is a global HVAC manufacturer specializing in heat pumps, ventilation systems, and customized climate solutions for residential and commercial applications.
We partner with distributors, engineers, contractors, and OEM partners worldwide.
1. HVAC Distributors & Dealers
Supporting global partners with reliable heat pump and ventilation solutions.
2. Engineering Companies & Contractors
Providing technical documentation, product selection, and project support.
3. OEM / ODM Partners
Offering customized HVAC solutions, private label manufacturing, and product development support.

