I have a Rheem ROBF-067LBEA949 oil furnace as part of a forced-air Rheem UPNL-036JAZ heat-pump heating-and-cooling system, controlled by a Honeywell TH5220D1029 thermostat in its 2H1C w/ AUX configuration. We've only been in this house through one winter, so I don't know what's "normal", but the oil furnace seems to come on, run for 5-10 minutes, shut off, wait for 5 minutes, then come back on. I know in a compressor A/C system, this would be called "short cycling", and would be bad for the compressor. I'm concerned that this might be bad for the furnace over a long period.
Got any advice?