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Programmable home A/C thermostats

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Programmable home A/C thermostats

Old 01-16-2015, 04:03 AM
  #21  
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Originally Posted by RGrew176 View Post
I bought a house many years ago and the gas budget for that home was $157 per month. It was an older home but fairly well insulated. It also had a boiler for heat. Once I installed the programmable thermostat I noticed my budget dropping each year until it bottomed out at $106 per month. That programmable thermostat paid for itself over and over again.

I have put one in every place I have owned since. There is a savings by reducing heat or A/C when no one is home and when sleeping.

I have mine set at 73* for both the heat and A/C when we are home. At night for sleeping the heat drops to 64* and the A/C is set for 77* when no one is home.

I would not be without one.

For your northern climate I agree with you.

The op is in Florida I believe.

Whether or not you save on energy costs when using a programmable thermostat to change temp while you are away depends greatly on system type and climate.
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Old 01-16-2015, 04:20 AM
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Originally Posted by slper View Post
I didn't go back to a heat pump this time. Just addition parts to fail when I only run the heat a few days out of the year. I have had the system a week and I tried working out a comfortable temp based on a more accurate stat vs. The old analog one. This in it's self has started to aggravate me to the point I'm not going to use the program feature. I traveled for work this week and I come home, wake up with a wet pillow from sweat. Not happy...
Waking up with a wet pillow from sweat is not being caused by your thermostat. Did the HVAC contractor do a heat load calculation on your home to determine the proper size of ac system or did he just put in the same size you had before ? A lot of consumers belief, I have a 15 yr old 4ton system that has worked great the last 15 years and that is what I want for the new system. The problem is the new R410a system does not produce the same amount of sensible and latent btu. Without doing a proper Maual J load calculation and using manual S for proper sizing, you will oversize a house. This over sizing causes the loss of humidity control thus unit does not run long enough to dehumidify properly and you sweat at night with the same temperature you use to set the old stat and not sweat.
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Old 01-16-2015, 07:48 AM
  #23  
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Originally Posted by bsh102 View Post
Waking up with a wet pillow from sweat is not being caused by your thermostat. Did the HVAC contractor do a heat load calculation on your home to determine the proper size of ac system or did he just put in the same size you had before ? A lot of consumers belief, I have a 15 yr old 4ton system that has worked great the last 15 years and that is what I want for the new system. The problem is the new R410a system does not produce the same amount of sensible and latent btu. Without doing a proper Maual J load calculation and using manual S for proper sizing, you will oversize a house. This over sizing causes the loss of humidity control thus unit does not run long enough to dehumidify properly and you sweat at night with the same temperature you use to set the old stat and not sweat.
That is good to know. He did a load calculation though. My wife has been jacking with the stat I found out... Last night I was comfortable. My old unit was 10 seer and the new is 15. I hope to see a $100 month savings as others in my neighborhood have...
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Old 01-16-2015, 08:09 AM
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Originally Posted by slper View Post
My wife has been jacking with the stat I found out...
Is she one of those people who think the A/C will cool the house faster if she turns the thermostat down further?
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Old 01-16-2015, 08:19 AM
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I installed two Honeywell Wi-Fi programmable thermostats in our house last year and have been really happy with them. I have ours programmed for our seven day schedule and our settings are as follows.

Winter: Heat on 68 degrees when home, 65 degrees at night and while we are gone.
Summer: AC on 76 degrees when home, 79 degrees when we are gone.

On the weekends when we are at the coast I set the thermostat up to 80 degrees. For vacations where we will be away for a week at a time I usually set it to 85 degrees and turn it back on remotely when we start home.

Over the last year our average savings has been right around $70-$75 per month compared to what we were paying. Lets just say the thermostats have long since paid for themselves! This past month we received the highest electrical bill of the year thanks to the really cold days we had. It was just under $200 and this is an all electric 3000 + sq ft home!
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Old 01-16-2015, 09:31 AM
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Originally Posted by yarcraft91 View Post
Is she one of those people who think the A/C will cool the house faster if she turns the thermostat down further?
No, she had auto heat and auto cool on with the settings all wrong.
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Old 01-16-2015, 04:58 PM
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As I have said, I prefer to set the thermostat at what I feel is comfortable. Depending on a few factors such as day vs night, active vs inactive, windy days make this old house seem cold, so I might change the setting one or two degrees depending on said factors. Honeywell or whoever isn't going to make much money off of me.

I do know what would be a great invention that would make someone a billionaire. I grew up with 5 sisters, an aunt, a grandmother and my mother, 8 women in one house. I've also been through "the change" with 2 ex's and now my GF seems to be starting. If someone can come up with a thermostat that a women can understand, operate and be happy with, I'm all in and I'll be rich!
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Old 01-16-2015, 05:07 PM
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Originally Posted by slper View Post
No, she had auto heat and auto cool on with the settings all wrong.
Oh, way better!
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Old 01-17-2015, 06:16 AM
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I recently replaced my Honeywell stat with a new programmable stat. Was having prob with short cycling and very small deadband or swing value and no minimum off timer. Stat had fixed deadband of .25 degrees. System would come on for 3 minutes, go off for 20 seconds, come on for 3 minutes, etc. I guess a super tight swing value works with a well insulated home. Mine is marginal at best and is on stilts with no floor insulation.

I set the swing value on the new stat to 1.25 degrees and it made a huge difference in cycling and humidity control. Hopefully I can save a few bucks and extend the life of the equipment as well by eliminating the short cycling. Have it set up for 4 program periods per day and it really does help with remembering to setback the stat in the morning when I leave.
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Old 01-17-2015, 07:53 AM
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Originally Posted by davedowneast View Post
If someone can come up with a thermostat that a women can understand, operate and be happy with, I'm all in and I'll be rich!
Dave there is such a stat, it is called a decoy, tell her the new one is the one to use from now on. I would suggest setting it when she is looking as to make it believable.
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Old 01-17-2015, 08:09 AM
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If someone can come up with a thermostat that a women can understand, operate and be happy with, I'm all in and I'll be rich! [/QUOTE]

Ain't that the truth!
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