Rolf L. Strand

Thermostat for a variable capacity HVAC and method for providing a ramping set point on a setback thermostat

Indoor climate controller system adjusting both dry-bulb temperature and wet-bulb or dew point temperature in the enclosure

Warm air furnace with premix burner

Feedback control for modulating gas burner

Fail-safe gas valve system with solid-state drive circuit

System and method of fault detection in a warm air furnace

Premix burner for warm air furnace

Hot surface ignitor

Vibration isolating motor mount

Water heater stacking detection and control