Thoughts?
Playing around with the idea of using one of the tankless hot water heaters along with a water>air heat exchanger + fan etc to provide both hot water and hot air.... Goal would be a single system rather than a diesel heater for air and a propane system for water. (The flip of that: using a diesel air heater to heat water seems less practical.)
An Ecotemp style heater and add some infrastructure: fan, pump, thermostat, valving/switching.
Something like this:
Playing around with the idea of using one of the tankless hot water heaters along with a water>air heat exchanger + fan etc to provide both hot water and hot air.... Goal would be a single system rather than a diesel heater for air and a propane system for water. (The flip of that: using a diesel air heater to heat water seems less practical.)
An Ecotemp style heater and add some infrastructure: fan, pump, thermostat, valving/switching.
Something like this: