This project demonstrates an all-electric combined HVAC and domestic hot water system using a single heat pump for both new and existing multi-unit residential buildings, which provides low operational and embodied carbon at a lower cost than competing all-electric solutions.

The project comprises two innovative elements:

1. A single heat pump integrated with a ventilation system to provide the entire building’s heating, cooling, DHW, and ventilation needs.
2. Cold air distribution (CAD), which uses very low temperatures to increase the cooling capacity of the air delivered to indoor spaces, reducing duct size and fan and pump energy.

Project objectives include:

1. Confirm the cost savings compared to the typical alternative all-electric solution.
2. Confirm predicted energy and carbon performance is achieved.
3. Gather, analyze, and report on monitoring data to ensure occupant acceptance; optimize operation of pilot system; and inform optimized design and operation of future installations.
4. Develop and disseminate exportable knowledge and products to support solution scale-up.