You Have to Change T-Stat for 14 seer.

[allstar08]

Hey guys,

I have a customer witha 3 year old honeywell stat, and he wants to add A/C.
He was told by another company that he has to change out his stat to get 14 seer because of cycles per hour. I have never heard of this before, is it crap? I know newer stats can be programmed for cycles per hour, but how would the stat know the seer rating of the equipment?

[makinmoney]

The Stat won't know and won't care what the seer rating is. A change of the stat may be necessary if you have a 2 stage cooling and a 2 stage heating system.

What cycles per hour are you referring to? Cooling cycles?

[Twilly]

Hey guys,

I have a customer witha 3 year old honeywell stat, and he wants to add A/C.
He was told by another company that he has to change out his stat to get 14 seer because of cycles per hour. I have never heard of this before, is it crap? I know newer stats can be programmed for cycles per hour, but how would the stat know the seer rating of the equipment?

Tell your customer that your the only one he can get mis-information from.

[allstar08]

From your lips to God's ear.

[mayguy]

I think they are trying to make money.. As said, the t-stat won't know if it's a 5 SEERS or 22 SEERS.. As long it works in cooling it's fine.. True, newer ones has CPH settings.. You know what the model of the current t-stat is?

[heatingairman]

Becareful guys. He may need a time delay of some sort to get 14 SEER and the contractor prefers to use a thermostat time delay rather than a time delay relay AT the furnace.

[Twilly]

Becareful guys. He may need a time delay of some sort to get 14 SEER and the contractor prefers to use a thermostat time delay rather than a time delay relay AT the furnace.

How will time delay increase seer?

[heatingairman]

How will time delay increase seer?

If you look on ARI's website, some match ups need a TDR (time delay relay) in order to reach a certain SEER.

[Twilly]

You could be correct, I have never read or heard that, but hey even Twilli can learn something. The equipment that I install the ecm motor ramps up slower and helps with humidity removal by making the coil colder. Also isn't this adjustment usually made at the furnace????

[heatingairman]

YES!!! It is USUALLY made at the furnace, however some furnaces do not have a TDR built into the circuitry (especially old units). Also, some states will not recognize an ECM motor for an increase in SEER, like WISCONSIN!!!!!
It's very frustrating! Hopefully someone from Focus on Energy will read this post!!!!!

[Twilly]

YES!!! It is USUALLY made at the furnace, however some furnaces do not have a TDR built into the circuitry (especially old units). Also, some states will not recognize an ECM motor for an increase in SEER, like WISCONSIN!!!!!
It's very frustrating! Hopefully someone from Focus on Energy will read this post!!!!!

I guess I was assuming

[comfortdoc]

I guess I was assuming

... that everyone installs Coleman?

[catmanacman]

i installed a 5 ton trane last week that that took a 401 tstat to be 14 seer but not really sure y