SunPump can be used for space heating when designed correctly to balance the heating source with the heat emitters. It is important to use Low-Temperature methods of distributing heat for all renewable energy and heat pumps. Do not attempt to use a SunPump with old cast iron radiators or baseboards sized for boilers. It is a Rookie mistake to attempt to satisfy an underfloor Staple Up PEX install (especially without aluminum heat spreaders), because it will fail without high temperature water that Heat Pumps like SunPump cannot supply. Installers be warned!
Do not mistake the maximum water temperature of 140 F. in the tank top for the Entry Water Temp. "EWT" required. Our copper immersion coil can extract a stable "approach temperature" in the range of 90-110 F. when the tank is 130 F. Always design for EWT as low as possible, the lower the better for efficiency, and always less than the maximum of 120 F. Below is a guide to choose low temp emitters and avoid high temp ones. Exceptions are available, we know of some low temp fan coils and baseboards, that transfer heat using greatly increased surface areas. Ask us for help.
If you need a Hydronic Design with optional stamped drawings, Contact us here for complimentary or professional-fee Mechanical Design.
https://www.sunpump.solar/mechanical-design-service