New Thermostat verus old thermostat

My old thermostat when set to 68, for heating, would come on at 67 and turn off around 69 - 79. My new thermostat with a new furnace, 93%, comes on at 68, set at 68, and goes off at 68. Is this normal for the new thermostat to stay constant temp? If I put the old one back on, would I not be saving gas and wear and tear on my new furnace if it runs the same as when it was on my old furnace?

 

It kind of comes down to comfort or economy. A wider temperature swing will be more economical but you won't be as comfortable. Economy & comfort is where variable speed, two stage furnaces really shine. I'm wating for someone to come out with a true modulating furnace similar to the modulating boilers.

 

What Brand/Model of t-stat do you have?

On the Honywell lines, you can set CPH (Cycles per hour) to provide comfort.

Other brands has temp swing like you've mention about on your old t-stat.

The tight temp is good for comfort, our body can feel 2 degree temp swing.

Grady,

Rheem and York has a Modulating furnace. (13 stages)

 

Its a Honeywell Electronic Programmable Thermostat, 4 settings for Mon thru Fri and two settings for Sat and Sun. Does both heating and cooling. Cannot find a model number on manual or Thermostat. Find nothing on setting CPH as you call it. UPS code is 69-0862-3. Next time I go to Menards will have to look as I believe they sell the same thing there.

Anyplace I could find model number on thermostat?

 

The model # should be on back of the t-stat it self when you remove it from the sub base.

The chaper end of the HOnywell will have switch or screws on the back.

I don't think Mendards carries the Honywell lines.. Just Home Depot.

 

That sounds scary, especially with York. Reminds me of their wonderous Triathlon heat pump. Do you, by any chance, have a link to either one?

 

I'll e mail it to you Grady.

Rheem has been using it for 5+ years, and been going well. York just came out with it.

 

C'mon Jay, post a link here so we can all see this 13 stage furnace. I would REALLY like to see a 13 stage gas-fired unit for residential use.

 

Personally, I am not impressed with the modulating furnaces. Or even 2- stage furnaces for that matter.

All they are doing is underfiring the furnace. That means a colder flame temp and a longer run time. That means it cost a lot more money for you to heat your home.

As far as comfort goes, I am more comfortable with warmer air coming out of those registers.

 

Most 2 stage furnaces are more efficient on low fire than high. The cooler flame is matched with a lower fan speed to keep the temperature rise within spec. It is a fact that if you had a furnace which exactly matched the heat loss of the structure at any given time this system would run constantly & provide a constant temperature & be as efficient as you could get.

 

Allright, here ya go!

York's

and

Rheem's


BigD,

Grady made the right point. I'll add my point on it....

2-stage and Modualting been around awhile, and there has been no trouble with it.

The ideal behind this is COMFORT. Yes, it may cost a little more to run, but People are willing to pay for comfort.

I have a two stage Trane and a couple family members as well and been VERY happy with it. They said the comfort is there, and both my uncle and I have older homes, and before the two stage, temp in the home was never even from one area to to another, Now with two stage, it's with in 2 degrees.

Also, what I like most about is it's QUIET running on low stage..