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What Caused My Heat Exchanger To Fail - Check out these real examples
WEBVTT Kind: captions Language: en
00:00:00.030 hello I'm mark Boston Oh with tradesman 00:00:01.85000:00:01.860 mechanical this video is going to focus 00:00:04.16000:00:04.170 on heat exchangers why they fail why 00:00:07.55000:00:07.560 they crack we have collected an 00:00:11.45000:00:11.460 assortment of heat exchanges over the 00:00:14.18000:00:14.190 last little while and put them aside and 00:00:15.89000:00:15.900 actually shot some video on on them for 00:00:19.04000:00:19.050 you to see we'll be explaining from one 00:00:22.46000:00:22.470 model to another when may have happened 00:00:25.55000:00:25.560 and this will be a combination of you 00:00:28.82000:00:28.830 know poor maintenance poor design to 00:00:33.68000:00:33.690 some extent and poor installation which 00:00:36.08000:00:36.090 in most cases would relate to poor 00:00:38.15000:00:38.160 insulation so hang tight and we're going 00:00:41.86900:00:41.879 to look at those exchanges right now 00:01:07.66000:01:07.670 okay starting with this carrier mid 00:01:10.34000:01:10.350 efficient this is a wave model WAV we 00:01:13.34000:01:13.350 call them they made these for quite a 00:01:16.07000:01:16.080 few years and I guess in part this is a 00:01:18.89000:01:18.900 bit of a design flaw because a lot of 00:01:21.28900:01:21.299 them do fail and typically they'll crack 00:01:24.05000:01:24.060 in in this location this one just a 00:01:26.35900:01:26.369 barely barely noticeable here but they 00:01:28.94000:01:28.950 can get quite more crack than than this 00:01:31.60900:01:31.619 amount and for it to get this weight you 00:01:33.95000:01:33.960 know having a dirty air filter and 00:01:36.28900:01:36.299 letting the furnace run harder than it 00:01:37.76000:01:37.770 should that's going to put stress on it 00:01:39.28900:01:39.299 and so you know part that part of this 00:01:41.71900:01:41.729 would be designed but also would be a 00:01:44.03000:01:44.040 little bit of poor maintenance moving on 00:01:47.30000:01:47.310 to the next one this is your newer 00:01:50.35900:01:50.369 Lennox model and whisper heat and again 00:01:54.16000:01:54.170 you know in this particular model is a 00:01:56.51000:01:56.520 cracklin on this location here and it's 00:01:59.38900:01:59.399 typical of of this model to crack in 00:02:02.99000:02:03.000 that location if not in this cell in one 00:02:05.35900:02:05.369 of the other ones this one's actually 00:02:06.46900:02:06.479 starting to crack a bit too but 00:02:08.86900:02:08.879 nevertheless you know 00:02:10.62000:02:10.630 Furness too hot from not cleaning the 00:02:12.87000:02:12.880 furnace is is definitely the reason why 00:02:17.73000:02:17.740 these things fail before they should the 00:02:22.32000:02:22.330 next model we have here is a Bryant unit 00:02:24.99000:02:25.000 this is actually a 2001 which is already 00:02:28.86000:02:28.870 a high efficient furnace and we're 00:02:31.92000:02:31.930 looking at the secondary heat exchanger 00:02:33.66000:02:33.670 here and as you can see you've got all 00:02:35.64000:02:35.650 this corrosion buildup and this could 00:02:38.22000:02:38.230 happen for a couple of reasons 00:02:40.41000:02:40.420 one of them is poor maintenance as far 00:02:44.19000:02:44.200 as it running hot and not keeping the 00:02:47.13000:02:47.140 condensate because this is a condensing 00:02:48.99000:02:49.000 furnace and at the condensate trap isn't 00:02:51.42000:02:51.430 kept clean all the water that it 00:02:53.43000:02:53.440 collects can't get out of it and 00:02:55.01000:02:55.020 basically you get buildup from it 00:02:57.39000:02:57.400 sitting between cycles and it just keeps 00:02:59.76000:02:59.770 building up and again all these calcium 00:03:01.32000:03:01.330 deposits so the other reason this could 00:03:05.40000:03:05.410 fail is also poor installation by having 00:03:08.76000:03:08.770 the furnace slope the wrong way the 00:03:11.22000:03:11.230 condensate needs to all run out to the 00:03:12.99000:03:13.000 front and drain out and if someone 00:03:15.27000:03:15.280 didn't level it properly then you can 00:03:17.58000:03:17.590 get it sitting between cycles and and 00:03:20.19000:03:20.200 building up this corrosion and basically 00:03:22.14000:03:22.150 there isn't much you can do with this 00:03:23.49000:03:23.500 it's got to be the place moving on to 00:03:27.93000:03:27.940 the next one which is a carrier similar 00:03:30.00000:03:30.010 product this is a 2007 model so it's you 00:03:34.41000:03:34.420 know not quite ten years old and you can 00:03:37.35000:03:37.360 see all the all the damage that it's 00:03:39.27000:03:39.280 that has had and this one in particular 00:03:41.94000:03:41.950 I remember that it was strictly because 00:03:44.58000:03:44.590 the furnace was sloped the wrong way it 00:03:47.19000:03:47.200 and the water between cycles would just 00:03:49.41000:03:49.420 lay there and a little bit of rust would 00:03:51.51000:03:51.520 just continue to develop more and more 00:03:53.28000:03:53.290 and so poor installation on this one and 00:03:56.90000:03:56.910 our last one basically is the Goodman 00:04:00.00000:04:00.010 believe it or not only less than six 00:04:02.67000:04:02.680 years old at 19 2010 model and this was 00:04:06.99000:04:07.000 basically from poor installation and 00:04:09.50000:04:09.510 overheating so this the gas valve on 00:04:12.27000:04:12.280 this one was over firing and as you can 00:04:14.64000:04:14.650 see all the heat marks on this thing and 00:04:16.34900:04:16.359 it just really burnt this thing badly 00:04:18.21000:04:18.220 and 00:04:19.55000:04:19.560 that's that was the end result for this 00:04:21.34900:04:21.359 guy didn't talk didn't take long for us 00:04:23.75000:04:23.760 to figure out this was a really 00:04:24.95000:04:24.960 dangerous situation so as you can see 00:04:28.46000:04:28.470 there's a number reason why heat 00:04:30.17000:04:30.180 exchangers can fail and crack and at the 00:04:33.05000:04:33.060 same time we're gonna go back and I'll 00:04:34.37000:04:34.380 give you some of my recommendations okay 00:04:39.20000:04:39.210 welcome back so now that we've gone 00:04:42.35000:04:42.360 through all those heat exchangers I 00:04:45.46000:04:45.470 guess the situation is if that's that's 00:04:48.50000:04:48.510 something that you've ended up with you 00:04:51.14000:04:51.150 know replacing the heat exchanger you 00:04:53.75000:04:53.760 know in a lot of cases can be under 00:04:55.21900:04:55.229 warranty but then you'd still be you 00:04:57.83000:04:57.840 know responsible for thee for the labor 00:04:59.57000:04:59.580 of a component unless of course that's 00:05:02.03000:05:02.040 part of your warranty as well so some of 00:05:05.09000:05:05.100 the reasons as we've discussed I think 00:05:09.17000:05:09.180 most of them actually boil down to just 00:05:11.45000:05:11.460 poor installation so I guess it's 00:05:14.81000:05:14.820 important you know if you've you know 00:05:18.11000:05:18.120 moved into a house and you're not sure 00:05:19.76000:05:19.770 of you know how well it was installed 00:05:21.80000:05:21.810 and you're worried about it you should 00:05:22.96900:05:22.979 definitely have the furnace checked you 00:05:25.34000:05:25.350 know you have someone that's a reputable 00:05:26.87000:05:26.880 come out and do an annual service on it 00:05:29.71900:05:29.729 which would involved as we would do as a 00:05:32.12000:05:32.130 first time out we would definitely check 00:05:34.04000:05:34.050 the heat exchanger and whatever 00:05:36.20000:05:36.210 parameters would be required to make it 00:05:39.11000:05:39.120 as a qualified install it's going to you 00:05:41.57000:05:41.580 where you're going to get the full life 00:05:43.13000:05:43.140 in the furnace so as it stands if you 00:05:45.80000:05:45.810 have a cracked heat exchanger when we 00:05:48.68000:05:48.690 when we do an annual service and that it 00:05:51.65000:05:51.660 becomes apparent we always recommend 00:05:54.32000:05:54.330 that you have it the second opinion and 00:05:57.32000:05:57.330 typically sent your gas or hydro you til 00:05:59.93000:05:59.940 atte would be the ones that would verify 00:06:01.64000:06:01.650 that and just because the heat exchanger 00:06:04.64000:06:04.650 is cracked doesn't mean that you're in a 00:06:07.19000:06:07.200 completely dangerous situation it just 00:06:09.20000:06:09.210 puts you in a different category where 00:06:11.81000:06:11.820 it's going to be required to to keep 00:06:14.39000:06:14.400 track of it and to have it checked more 00:06:16.01000:06:16.020 regularly at that point you know having 00:06:18.68000:06:18.690 a crack in a heat exchanger 00:06:20.73000:06:20.740 can become dangerous but once it cracks 00:06:22.83000:06:22.840 in the crack isn't necessarily causing a 00:06:25.40900:06:25.419 problem but it can just get larger and 00:06:27.87000:06:27.880 become an opportunity for carbon 00:06:32.55000:06:32.560 monoxide to to get into your residence 00:06:36.40900:06:36.419 and if that is the case if you're 00:06:38.76000:06:38.770 getting that carbon dioxide detector 00:06:41.43000:06:41.440 going off you should definitely call the 00:06:42.93000:06:42.940 fire department right away and get out 00:06:45.15000:06:45.160 of the house nevertheless as far as heat 00:06:49.23000:06:49.240 exchangers go we can come out you know 00:06:52.43900:06:52.449 and if you haven't had your furnace 00:06:53.93900:06:53.949 check for a while 00:06:55.17000:06:55.180 we're definitely available to come out 00:06:57.02900:06:57.039 and help you with that I hope you got 00:06:59.12900:06:59.139 some value from this video please check 00:07:02.76000:07:02.770 on a ruddy vide other videos on YouTube 00:07:04.80000:07:04.810 and thank you for watching 00:07:15.39000:07:15.400 you
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