Articles by John Siegenthaler, P.E.

Outdoor reset can improve performance.

Outdoor reset can improve performance.

A designer needs to connect an indirect water heater to a multiple boiler system. He selects a hydraulic separator and connects the piping of the indirect water heater on the same side as the boilers.

Details matter when adding a pellet boiler to an existing system.

Details matter when adding a pellet boiler to an existing system.

A heating professional is asked to retrofit a biomass boiler to an existing distribution system consisting of older cast-iron radiators, iron piping and an oil-fired boiler.

With the right design, geothermal heat pumps can work in a variety of applications.

Orchestrating the wet-side hardware.

A multiple boiler system using sectional cast-iron boilers has been configured to supply two loads.

Providing space heating, space cooling and domestic water heating.