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Message
Question for OT HVAC engineers
Posted on 1/5/18 at 8:53 pm
Posted on 1/5/18 at 8:53 pm
Should you turn the heat down when you're gone all day, or leave the house at a constant temperature?
Same question goes for AC in summer.
Same question goes for AC in summer.
6
Posted on 1/5/18 at 8:53 pm to Jim Rockford
Constant temp
Posted on 1/5/18 at 8:53 pm to Jim Rockford
Set a fire while you’re gone so you have that crackling natural warmth when you come back home
Posted on 1/5/18 at 8:57 pm to Walt OReilly
Walt is correct
Constant during the day rad lower at night
No need for extreme fluctuations
Constant during the day rad lower at night
No need for extreme fluctuations
Posted on 1/5/18 at 9:24 pm to Fusaichi Pegasus
Mine is 74 now and 69 in the summer. Seldom changes.
Posted on 1/5/18 at 9:30 pm to Jim Rockford
I get cheaper bills when it doesn’t run while I’m away. FWIW YMMV
ETA: Insulation of the house and quality of the HVAC are big variables.
I have shitty insulation and pretty good and new HVAC.
ETA: Insulation of the house and quality of the HVAC are big variables.
I have shitty insulation and pretty good and new HVAC.
This post was edited on 1/5/18 at 9:35 pm
Posted on 1/5/18 at 11:04 pm to Bullfrog
The vast majority of homes will see a decrease in energy use by shifting the temperature during the day when no one is at home.
Posted on 1/5/18 at 11:08 pm to Jim Rockford
It has been proven that lowering the heat while you are away does save money....however, I crunched the numbers and it is just not worth the additional hassle for me, so I don't do it. Probably would be smart for me to buy a thermostat that can do that for me...
Posted on 1/6/18 at 12:24 am to Jim Rockford
it takes more energy to bring the house back to temperature then you save by turning it off.
what you should do though is turn it down a little, with a/c turn it up to around 80 during the day while you are at work. it oinly takes about 30 minutes to recool the house as well as walls and furniture (yes they all hold trapped in heat).
it is just the opposite for heating, turn it to 65 while you are at work.
doing this saves money but doesnt waste all the savings of it not running as much, by making the system run for well over an hour to get the temperatures back to normal settings and stop short cycling after shutting off.
what you should do though is turn it down a little, with a/c turn it up to around 80 during the day while you are at work. it oinly takes about 30 minutes to recool the house as well as walls and furniture (yes they all hold trapped in heat).
it is just the opposite for heating, turn it to 65 while you are at work.
doing this saves money but doesnt waste all the savings of it not running as much, by making the system run for well over an hour to get the temperatures back to normal settings and stop short cycling after shutting off.
Posted on 1/6/18 at 12:30 am to Jim Rockford
The only real savings I can see with constant temps and using a heat pump is to try to heat your house during the daylight hours, when the heat pump is more productive and efficient, as opposed to heating it a lot when you get home and it is dark and colder.
This will lead to the auxillary heat coming on as well, which will drive up your power bill.
I can not see the savings benefit in any type "constant" temp using AC, or a gas furnace heater.
This will lead to the auxillary heat coming on as well, which will drive up your power bill.
I can not see the savings benefit in any type "constant" temp using AC, or a gas furnace heater.
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