The heat pump works very well, the emergency heat never came on last winter - not even close. There's just one problem - when in a/c mode, the temperature spread between on/off cycles is WAY too large - sometimes upwards of 6-7 degrees. The thermostat (simple White-Rogers 'heat pump thermostat') was replaced about a year ago. Made no difference.
I've tried to read up on this on the internet but still have no clear idea - the engineers here tell me such thermostats are not adjustable for sensitivity. There is an anticipator dial, but I believe that only affects electric heating if/when it's ever used as backup. Is this true? Could a better thermostat result in shorter cycles (no, not REAL short, but perhaps a temperature difference of 3 degrees would be great).
Thanks for any advice - Bill