There is a growing interest in adding air-to-water heat pumps to existing hydronic heating systems. While I support their use, I do not recommend replacing a perfectly good cast-iron boiler that still has a long service life.

Find out about piping options for retrofitting an air-to-water heat pump into an existing hydronic system.

Electro Industries is a manufacturer of electric boilers, air-to-water heat pump technology, electric duct heaters and controls. 

Hydronic-based heating and cooling systems stand ready to offer plenty of design and performance benefits. One of them is the potential for thermal storage.

A home in New Hampshire offers a glimpse of how the landscape might be changing within the next decade.

Last month, we began discussing the HVAC system installed at my church’s newly-constructed parsonage. In this month’s column, we’ll complete the picture.

More and more hydronic heating and cooling systems are being designed around air-to-water and water-to-water (geothermal) heat pumps. When the heating distribution system is extensively zoned, a buffer tank is typically installed between the heat pump and that distribution system.

Johnson Controls-Hitachi’s new Yutaki M R32 monobloc air-to-water heat pump is an all-in-one solution, delivering heating, cooling and domestic water heater with an external tank.

Government planners, taking their queues from politicians and advocacy organizations, have steered the future of energy supply away from fossil fuels and toward renewably-sourced electricity. It’s happening on every level from the feds right down to local city councils.

The System M consists of a sleek, quiet, inverter-driven outdoor heat pump that can be up to 4 times more efficient than a gas furnace, the company says.