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Old 01-31-2012, 01:32 PM   #16
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Question about changing to high efficiency gas furnace


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Originally Posted by how View Post
Is the horizontal section, double walled (B vent)?

A return air grill in the furnace area can cause a negative pressure for the chimney draft to fight against.

If the inducer motor is failing and causing a problem that is new, what is the cost for a replacement ID assy?
I think the horizontal section is B vent. I will try to take some pictures and post here to show everyone later this Thursday. I don't know the cost for a replacement ID assy, but the 2nd professional already replaced THREE parts in this furnace ("limit switch", "pressure switch", and "temperature sensor", total cost around US$500 so far, it is starting to become a money pit). Although it did help with the problem (the furnace won't shut down by itself so frequent now), but it still did not 100% solve the problem.

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Last edited by ohman; 01-31-2012 at 01:52 PM.
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Old 01-31-2012, 02:36 PM   #17
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Question about changing to high efficiency gas furnace


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Originally Posted by hvac5646 View Post
what person installs an 80% furnace with no liner???????
The current chimney and setup was inherited from a old old furnace which we had long long time ago (the house is about 100 years old I believe). I think that's why the 1st guy proposed to replace terra-cotta flue and install new double wall flue.

We really like this 1st guy as he enjoy 5 stars perfect rating on some of the review sites, and he is just so knowledgeable about HVAC and so professional. I wonder the reason why he didn't suggest to replace the existing furnace to a high efficiency one maybe is because high efficiency gas furnace is more prone to problems? According to this article, it seems that it will also cost more to repair for high efficiency furnace. Is this true? Any thoughts or comments? Thanks again!
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Old 01-31-2012, 07:05 PM   #18
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Question about changing to high efficiency gas furnace


Say What? They have a whole series of furnaces.

http://www.bryant.com/products/gasfu...mparison.shtml

The 4 level concept is

1) Builders grade entry level 1 stage
2) Basic 2 stage
3) Deluxe 2 stage with ECM variable speed energy saving motor
4) Cadillac = modulating furnace

Bryant IMO has always been very high quality machines even better than Carrier who now owns them. Payne and Day/Night are the poorer sisters of the Carrier group of companies. Especially when it comes to air conditioners the Bryant is very heavy, quiet and well built. Carrier good, the other 2 a bit noisier and more for the budget market.

Quality high efficiency furnaces, properly installed and maintained DO NOT cost more to repair than a mid efficiency unit. The modulating furnaces have some higher priced circuit boards but if you drive a Lexus and want the ultimate in comfort and quiet that clientele does not worry about the cost of repairs. Not sure why he did not recommend replacing it but we all think differently. Maybe he thinks you want to try get more life out of it. My long term clientele is like that. We will keep repairing until they get tired of it and then they buy a new one from us anyway so we make $$ both ways and are not pushy to just replace it now.
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Last edited by yuri; 01-31-2012 at 07:12 PM.
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Old 02-01-2012, 11:29 PM   #19
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Question about changing to high efficiency gas furnace


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Originally Posted by yuri View Post
Say What? They have a whole series of furnaces.

http://www.bryant.com/products/gasfu...mparison.shtml

The 4 level concept is

1) Builders grade entry level 1 stage
2) Basic 2 stage
3) Deluxe 2 stage with ECM variable speed energy saving motor
4) Cadillac = modulating furnace
Yuri, thanks so much for your reply! I really appreciate it.
So the 2nd HVAC professional quoted us $2600 (labor + furnace), and he said that he will be using a 96.2% efficiency Bryant model. I google'd it and found that he was probably referring to the Bryant "Preferred Series 95t" gas furnace. Any experience about this "Preferred Series" by Bryant? Is this a Lexus or Cadillac or just Toyota or Honda? Thanks!
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Old 02-02-2012, 06:34 AM   #20
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Question about changing to high efficiency gas furnace


I'm going to chime in as a consumer and certainly not as a Hvac pro. I just had that exact model installed...Bryant preferred plus 95%...I'm very happy with my choice. After turning the temp down for sleeping at night or when we are out for the day, it recovers my 1900 sq ft plus basement backsplit in no time at all. Plus in the warmer months I keep the fan running continuously and have eliminated the need for a basement humidifer. Did'nt even ding my electric bill.

But here's my beef. I paid waaay more then your quoted price. I went for it because the fed's are offering a $750 rebate and Ontario hydro is offering $250.
So $4100 including 10 yrs. parts and labour, minus $1000 = $3100. Your price is still a lot cheaper.

Happy shopping!
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Old 02-07-2012, 12:36 AM   #21
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Question about changing to high efficiency gas furnace


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Originally Posted by creeper View Post
I'm going to chime in as a consumer and certainly not as a Hvac pro. I just had that exact model installed...Bryant preferred plus 95%...I'm very happy with my choice. After turning the temp down for sleeping at night or when we are out for the day, it recovers my 1900 sq ft plus basement backsplit in no time at all. Plus in the warmer months I keep the fan running continuously and have eliminated the need for a basement humidifer. Did'nt even ding my electric bill.
Happy shopping!
Hi Creeper, thanks for chiming in as a consumer. YES I think we will go with the exact model you have too (Bryant preferred plus 95%).

So couple of quick questions:
1. For correct installation, what size (diameter) of exhaust vent pipe should this HVAC professional use? And what size of condensate drain hose should he use?

2. For high efficiency furnace, the air filter requirement should be the same with the conventional 80% one, right? I mean I guess we still have options to choose from a "washable" filter and a regular filter, right?

3. We don't have snow here in San Francisco, does that mean that probably there is no code to regulate the height (where it sticking out of the wall) of the condensate drain hose?? We found a drain right outside of the wall, would it be a good idea to drill a hole and directly channel the condensate drain hose into the drainage? How much water usually it would generate per day from the high efficiency furnace (the house is about 3,600 sq ft, 3 floors).

Oh by the way, here are some pictures that I promised to post here for the OLD furnace set up (wasn't installed correctly I think)...

http://postimage.org/image/l8opeok2d/
http://postimage.org/image/q9i318jzr/

Thanks

Last edited by ohman; 02-07-2012 at 12:44 AM.
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Old 02-07-2012, 09:21 AM   #22
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Question about changing to high efficiency gas furnace


Quote:
Originally Posted by creeper View Post
I'm going to chime in as a consumer and certainly not as a Hvac pro. I just had that exact model installed...Bryant preferred plus 95%...I'm very happy with my choice. After turning the temp down for sleeping at night or when we are out for the day, it recovers my 1900 sq ft plus basement backsplit in no time at all. Plus in the warmer months I keep the fan running continuously and have eliminated the need for a basement humidifer. Did'nt even ding my electric bill.

But here's my beef. I paid waaay more then your quoted price. I went for it because the fed's are offering a $750 rebate and Ontario hydro is offering $250.
$4100 including 10 yrs. parts and labour, minus $1000 = $3100. Your price is still a lot cheaper.

Happy shopping!
yeah, i agree there is something fishy with that price of $2600.00........sound way to cheap.
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Old 02-07-2012, 10:41 PM   #23
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Question about changing to high efficiency gas furnace


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Originally Posted by dosy777 View Post
yeah, i agree there is something fishy with that price of $2600.00........sound way to cheap.

Especially in San Francisco. But times are hard and, in some markets, competition is fierce. Check if the guy is getting a permit - the tree huggers in SF might not like your pouring carbonic acid into their drain system! Confirm the price and, if it's real and the guy knows what he's doing, I'd go fo it.
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Old 01-19-2013, 05:10 PM   #24
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Question about changing to high efficiency gas furnace


I'm in Northern California just across the bay from @ohman and am getting quotes. $2600 is very much like the quotes I'm getting for a basic 80% furnace (Bryant or Rheem) installed. $2800 for a 80% two stage Bryant, $3400 for a 92% two stage Rheem, and $3800 for a 95% two stage Bryant preferred 95t.

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