As a new member, let me first thank everyone in advance for their help.
I have a dual fuel system - an oil-burning furnace and a 13 year-old Trane heat pump which I'm replacing. I have gotten two quotes from two very reputable service providers.
However, shop A gave me a quote that included a Trane XL803 thermostat AND the Fossil Fuel Kit (plus bonnet switch & outdoor sensor). Shop B gave me a quote with a Honeywell 6000 thermostat but no fuel kit.
After reading the forums here and doing a bit of searching, it appears that with the XL803, the fuel kit would not be necessary (even though they spec'd it) but that with the 6000, it would indeed be necessary. But I'm a novice and don't know for certain. so I'm wondering, under what circumstances is the fuel kit actually needed? And do I need it?
Secondly, between the two - the XL803 and the Honeywell 6000 - which is the better choice for my situation (although I believe the XL803 is a rebadged Honeywell)?
Your assistance is greatly appreciated.