Heat Pump System - Single Stage or 2 Stages?

Posted by Bob Simon on May 11, 2008, 12:29 pm

I'm looking at programmable thermostats for my heat pump -- Goodman
GSH14030 compressor and ARUF3030 air handler with a 10kW heat kit.
I want to determine how many stages of heating and cooling I have so I
went to the Goodman web site and searched the spec sheets for the word
"stage" but it was not listed this way.

Can someone please tell me if this is a single stage system or
multi-stage? For two stage systems do both the compressor and air
handler need to be two stage or is this determined by only one of
these components?

Posted by Noon-Air on May 11, 2008, 12:36 pm

> I'm looking at programmable thermostats for my heat pump -- Goodman
> GSH14030 compressor and ARUF3030 air handler with a 10kW heat kit.
> I want to determine how many stages of heating and cooling I have so I
> went to the Goodman web site and searched the spec sheets for the word
> "stage" but it was not listed this way.
> Can someone please tell me if this is a single stage system or
> multi-stage? For two stage systems do both the compressor and air
> handler need to be two stage or is this determined by only one of
> these components?

If the system isnt working correctly, there is a 99.999% chance that its
*NOT* a problem with the thermostat. Your local *COMPETENT*, licensed,
insured, professionally trained, HVAC technician will know what your system
needs, and should have one on the truck. FWIW, I understand that the big box
stores will no longer take thermostats back, unless you exchange it for the
exact same one you bought in the first place....even if its the wrong one.

Posted by Bob Simon on May 11, 2008, 1:57 pm

wrote:

>> I'm looking at programmable thermostats for my heat pump -- Goodman
>> GSH14030 compressor and ARUF3030 air handler with a 10kW heat kit.
>> I want to determine how many stages of heating and cooling I have so I
>> went to the Goodman web site and searched the spec sheets for the word
>> "stage" but it was not listed this way.
>> Can someone please tell me if this is a single stage system or
>> multi-stage? For two stage systems do both the compressor and air
>> handler need to be two stage or is this determined by only one of
>> these components?

>If the system isnt working correctly, there is a 99.999% chance that its
>*NOT* a problem with the thermostat. Your local *COMPETENT*, licensed,
>insured, professionally trained, HVAC technician will know what your system
>needs, and should have one on the truck. FWIW, I understand that the big box
>stores will no longer take thermostats back, unless you exchange it for the
>exact same one you bought in the first place....even if its the wrong one.

The system is working fine. What did I say that makes you think
otherwise?

Posted by Noon-Air on May 11, 2008, 2:39 pm

> wrote:

>>> I'm looking at programmable thermostats for my heat pump -- Goodman
>>> GSH14030 compressor and ARUF3030 air handler with a 10kW heat kit.
>>> I want to determine how many stages of heating and cooling I have so I
>>> went to the Goodman web site and searched the spec sheets for the word
>>> "stage" but it was not listed this way.
>>> Can someone please tell me if this is a single stage system or
>>> multi-stage? For two stage systems do both the compressor and air
>>> handler need to be two stage or is this determined by only one of
>>> these components?

>>If the system isnt working correctly, there is a 99.999% chance that its
>>*NOT* a problem with the thermostat. Your local *COMPETENT*, licensed,
>>insured, professionally trained, HVAC technician will know what your
>>system
>>needs, and should have one on the truck. FWIW, I understand that the big
>>box
>>stores will no longer take thermostats back, unless you exchange it for
>>the
>>exact same one you bought in the first place....even if its the wrong one.

> The system is working fine. What did I say that makes you think
> otherwise?

*most* of the time when folks comfort systems are not working properly, they
automaticaly think its the thermostat that is the problem, without realizing
thats like saying my car is broke, if I get a new key for it, it will run
again. Or that it needs some more of that "freezone" stuff. Never mind that
the system is over 10 years old and has never been serviced since the day it
was installed. Yes its real obvious to a *competent* Technician when the
system was hacked in by the lowest bidder, that its never been serviced,
lots of candles have been burnt over the years, lots of fried food, smokers,
etc.

Posted by Zyp on May 11, 2008, 1:02 pm

Bob Simon wrote:

Bob;

Your system is a 14 SEER 2.5 Ton Heat Pump. You will need a single stage
cool, 2 stage heating thermostat. The second stage for heat is the strip
heaters. Look in the instructions that came with the indoor unit. It will
show you how to connect your new thermostat to your system. Good luck.

And if you find a problem call your local HVAC repair people. They'll help
you, but there will be a fee tied to the help. We have bills to pay too.

--
Zyp

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