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This is no longer applicable to todays modern heating systems - nor the modern vehicle engine. The "keeping it even" is for a vehicle motor at cruising speed.
![carrier fx4cnf carrier fx4cnf](http://lasoparam408.weebly.com/uploads/1/2/5/3/125399547/349549047.jpg)
I know that without even checking my old heating bills. The extra 30 minutes to get it up to "comfortable" is more than paid for by the 6 hours at a very low temperature. Any time you reduce the temp by 1 C (1.8 F) you save money.
![carrier fx4cnf carrier fx4cnf](https://headhouses.weebly.com/uploads/1/2/5/8/125838415/114478168.jpg)
I know from experience living in very cold climates (-40 C = -40 F in the winter) that a programmable thermostat ALWAYS saves money! The colder the climate, the more it saves. This is our program for the thermostat: Night time (9:45pm - 5am): 18 C = 64.5 F Awake (5am - 8:30am): 19.5 C = 66.5 F "Away" (8:30am - 3pm): 17.5 C = 63.5 F Evening (3pm - 9:45pm): 19.5 C = 66.5 F I've been working with this schedule for 3 weeks (rental) and it appears that the 17.5 C drop needed an extra 30 minutes to get it up to a "comfortable" temperature when my family gets home at 3:45pm.
![carrier fx4cnf carrier fx4cnf](http://lasoparam408.weebly.com/uploads/1/2/5/3/125399547/808994685.jpg)
I live on the West Coast of Canada.I'll do my best to get everything in both Celsius and Fahrenheit.
![Carrier fx4cnf](https://kumkoniak.com/9.jpg)