What to do if Heatmaster C-150 Furnace water is hot but buildings have no heat?
- JjohnsonstevenAug 12, 2025
If your furnace water is hot, but your buildings aren't getting heat, here are a few things you can check: * Make sure all pumps in the system are running. * Check the filter cartridge for any flow blockages, if one is installed. * Bleed off any air that may be in the system at the exchanger. * Make sure there are no closed valves that are preventing water flow. * Check the temperature of the water as it exits the furnace, enters the building, and before and after each heat exchanger.