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Replacement furnace - is it compatible?

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Onslaughs

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Hi All,

My 1996 Bryant 350MAV048100 furnace (pic below) crapped out, and the home warranty company is replacing it with a Goodman GMES921004CN. I was wondering if the HVAC specialists on here could let me know if there is anything I should watch out for during the installation, and if it is generally compatible with the rest of the system.

Here are the specific questions:

1. Is it roughly equivalent to the current model?
2. Will it be able to keep up with the existing A/C? The outside unit is a 1988 TRANE TTB742A100A0 (pic of tag below). Any compatibility issues?
3. Will it still use the two pvc pipes coming out of the side of the house for the combustion air inflow and outflow?
4. Anything I should watch out for as to how the replacement unit it is installed?

Here is the pic of the existing furnace:

2020-10-08 17.29.41.jpg

And the outdoor A/C unit model tag:

2020-10-08 17.44.39.jpg

Thanks, everyone, for your help!
 

kok328

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Sorry, not an HVAC Specialist, just a guy with an opinion.

1. Is it roughly equivalent to the current model? NO, Lots of new technology in this one.

2. Will it be able to keep up with the existing A/C? YES.
The outside unit is a 1988 TRANE TTB742A100A0 (pic of tag below). Any compatibility issues? NO

3. Will it still use the two pvc pipes coming out of the side of the house for the combustion air inflow and outflow? YES

4. Anything I should watch out for as to how the replacement unit it is installed? INSTALLER SHOULD TAKE CARE OF ALL THE PARTICULARS, NO WORRIES.
 

Onslaughs

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Hello Kok328, thank you for your response!

Can you please elaborate as to what new technology is in the new Goodman furnace? It's 92% efficient, just like the current one, it has multi-speed motor (not variable), just like my current one, it's single-stage, just like my current one, same CFM. What are some of the technological advances that you were referring to?
 

kok328

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Hello Kok328, thank you for your response!

Can you please elaborate as to what new technology is in the new Goodman furnace? It's 92% efficient, just like the current one, it has multi-speed motor (not variable), just like my current one, it's single-stage, just like my current one, same CFM. What are some of the technological advances that you were referring to?
I was referring to the motor and it's efficiency, didn't realize they had come that far in 1996.
The last website I went to to check it out indicates that the item is "Discontinued".
Might want to do some checking before agreeing to this unit.
 

Onslaughs

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Hi all,

thanks for all the replies. The installer is here now installing the Goodman GMES921004CN furnace. He insists that:

A. the fresh air intake pipe does not need to be connected. Is this accurate?

B. he can connect it, but the furnace will start failing on cold days if he does. Is this also accurate?
 

Sparky617

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The tag on the AC unit says it was built in July 1988, impressive run. Newer units are much more efficient, might not last as long as your 32 year old unit though. I'd replace both. A AC from that era uses Freon which isn't made any more. What is available (made from recycled stuff from retired units, I believe) is getting more expensive every year.
 
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