Four New Central Heat Pump Water Heaters Debut at Heat Pump Water Heater Week

Central heat pump water heating for big buildings just had its busiest week of the year. Heat Pump Water Heater Week, a free virtual event series hosted by the New Buildings Institute from Monday, October 26 through Thursday, October 29, opened with a full day on central heat pump water heaters (CHPWHs), the large systems that serve apartment complexes, hotels, and other commercial buildings. CleanTechnica’s Joe Wachunas live-blogged the sessions on October 27, and the takeaway is simple: more manufacturers are entering the market, and the products are getting easier to fit into real buildings.

Four manufacturers presented central systems brought to market within the last year. Daikin showed its Mega Q, a cascading system that reaches high water temperatures without a swing tank or electric resistance backup. Eco2Systems introduced a 40 kW unit that packs the capacity of 8 to 10 of its heat pumps into a single cabinet, running on CO2 refrigerant with no electric resistance backup. Rheem presented the Torin, an inverter-driven central heat pump housed in the company’s familiar air conditioning cabinet, designed primarily for domestic hot water but capable of hydronic heating, and able to be chained in groups of up to 16 units. PHCP Pros reported in September that Torin ships in 68,000 and 120,000 BTU per hour models aimed at multifamily housing, hotels, offices, schools, and university campuses. Nyle rounded out the group with its Velo system, built to fit through standard doors and into tight spaces, with no swing tank and support for both single-pass and multi-pass designs.

The day also covered packaged systems. Water Drop’s Albert Rooks walked through skid-mounted central plants that are assembled and tested in a lab, then delivered to the site and connected with no field assembly. Ecotope’s Madison Johnson shared a field case study with a practical lesson: keep swing tank temperatures in check, because those tanks rely on electric resistance and running them hot drags down efficiency. Lync’s Jake Bucklin described specified systems, engineered by one manufacturer but shipped in pieces and assembled on site, a better fit when a retrofit mechanical room is short on space.

Why it matters to JFN

Domestic hot water is the single largest plumbing system in most of the buildings we build. A 300-unit apartment community or a 700-bed student residence runs on a central plant with storage, recirculation, and mixing valves that have to hold temperature at every fixture, every morning. When a central heat pump plant arrives on a skid, pre-piped and factory-tested, the rough-in sequence, the housekeeping pad, the electrical coordination, and the commissioning plan all change, and when units can be cascaded or chained, redundancy and future capacity become design decisions rather than afterthoughts. Arizona’s climate suits air-source water heating, and more developers and general contractors are asking about all-electric paths for hot water. We follow weeks like this one so that when the question comes up on a Tempe or Tucson project, we can speak to the equipment, the footprint, and the schedule with confidence.

Sources: CleanTechnica, October 27, 2026; New Buildings Institute, Heat Pump Water Heater Week 2026 event listing; PHCP Pros, September 9, 2026