Replacement furnace - is it compatible?

[Onslaughs]

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:



And the outdoor A/C unit model tag:



Thanks, everyone, for your help!

 

[user 4883]

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]

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?

 

[user 4883]

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]

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]

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.

 

[Jim greengo]

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?

It will gain a little efficiency with combustion air brought in from outside,but will work either way as long as it has enough combustion air.
What is his reason for issues with 2nd pipe?

 

[BuzzLOL]

LOL! This is an OLD thread...
BTW, I bought two of the Whirlpool (under another brand name) 90+% efficiency furnaces for two different houses (at the same time) about, oh, 20-30 years ago. They've been totally dependable and really cut the heat bills down. I picked them because, at the time, they were the only brand with both heat exchangers made out of stainless steel. And also because they use readily available Honeywell controls instead of proprietary controls only available through one high priced source. I see on here that later models have a troublesome 'smart gas valve' with a printed circuit board on it and condensation drips on it damaging it.