Is it the same thermostat used on the new furnace?
If you have a new Honeywell , FocusPROtm TH6000 Series installed with the new furnace. Don't compare the operating time between the old and new furnace/ thermostat operating
Your new thermostat has a "Smart function". It will "Learn" how long will it take to have your home reach to the temperature set point after the furnace cycle started, there for this feature will operates more frequently
Read the instruction manual "page 16, Adaptive Intelligent Recovery". This setting will change the "Heat calling Frequency" and the "Length" of Heat ON Cycle Time.
If you have a new Honeywell , FocusPROtm TH6000 Series installed with the new furnace. Don't compare the operating time between the old and new furnace/ thermostat operating
Your new thermostat has a "Smart function". It will "Learn" how long will it take to have your home reach to the temperature set point after the furnace cycle started, there for this feature will operates more frequently
Read the instruction manual "page 16, Adaptive Intelligent Recovery". This setting will change the "Heat calling Frequency" and the "Length" of Heat ON Cycle Time.