00:00:00.000 all right welcome Steve Holland here 00:00:02.09000:00:02.100 with rapid tech one of the brands and 00:00:04.34000:00:04.350 ethos skill let's go over we're going to 00:00:06.34900:00:06.359 talk about or we're gonna go over the 00:00:07.57900:00:07.589 Goodman model gks tubular heat exchanger 00:00:09.95000:00:09.960 just reminder all of these videos that 00:00:13.82000:00:13.830 are on are a rapid tech program each one 00:00:16.82000:00:16.830 of these videos is part of that rapid 00:00:18.43900:00:18.449 tech heat exchanger certification and 00:00:20.45000:00:20.460 remember rapid tech is a nationally 00:00:22.82000:00:22.830 recognized certification program so if 00:00:26.45000:00:26.460 you are entering the HVAC world and you 00:00:28.31000:00:28.320 want to join rapid tech or if you are 00:00:30.56000:00:30.570 already working for a company or you're 00:00:32.24000:00:32.250 an owner and you want to get your 00:00:33.47000:00:33.480 technicians certified without sending 00:00:35.24000:00:35.250 them off to school you can use our 00:00:37.13000:00:37.140 program super affordable excellent 00:00:39.92000:00:39.930 program and we don't have a 27 year 00:00:43.45900:00:43.469 veteran of the heating and air business 00:00:44.75000:00:44.760 I go out work on furnaces all the time 00:00:47.45000:00:47.460 my trained technicians so we're not just 00:00:50.56900:00:50.579 some polished up actor on a video trying 00:00:52.93900:00:52.949 to sell you something you will love 00:00:55.36900:00:55.379 rapid tech you'll love how it works 00:00:56.75000:00:56.760 let's go ahead and get into that video 00:00:57.92000:00:57.930 real quick by the way every single video 00:01:00.26000:01:00.270 that we do in heat exchangers or many of 00:01:01.93900:01:01.949 the other failures that we find we not 00:01:04.42900:01:04.439 only video the the failure but we 00:01:07.94000:01:07.950 photograph it and in Rapid tech all the 00:01:10.94000:01:10.950 supporting documents are there that you 00:01:12.59000:01:12.600 can pull up right on you are tablets or 00:01:14.33000:01:14.340 cell phones 00:01:15.05000:01:15.060 you only need a tablet your cell phone 00:01:16.91000:01:16.920 is you can watch these right on a cell 00:01:18.44000:01:18.450 phone but you can also pull up all the 00:01:20.74000:01:20.750 supporting documents so you can pull 00:01:23.48000:01:23.490 that supporting document up and it's got 00:01:25.28000:01:25.290 pictures of where look for the failures 00:01:27.14000:01:27.150 so it's right there let's go ahead and 00:01:29.33000:01:29.340 take a look and we'll watch the video 00:01:30.80000:01:30.810 and then we'll do a quick recap I took 00:01:39.53000:01:39.540 it all apart and you know with rapid 00:01:41.53900:01:41.549 tech we break down every furnace that we 00:01:44.03000:01:44.040 possibly can to investigate somebody in 00:01:48.05000:01:48.060 the shop called me the first detected 00:01:49.81900:01:49.829 the other day I don't know if that's 00:01:50.89900:01:50.909 quite the right label but let's go ahead 00:01:53.14900:01:53.159 and show you what I found first things 00:01:55.96900:01:55.979 first if you notice right here some of 00:02:01.76000:02:01.770 you may notice this 00:02:06.78000:02:06.790 would that help me that tells me that 00:02:10.30000:02:10.310 somebody may have bent the plan and the 00:02:12.34000:02:12.350 plan may have started here and went to 00:02:15.52000:02:15.530 here which means we restricted air flow 00:02:17.80000:02:17.810 on this entire section on the spa heat 00:02:20.65000:02:20.660 exchanger that could be why we found the 00:02:23.38000:02:23.390 problem that we found let me just show 00:02:24.64000:02:24.650 you what I discovered here do it a few 00:02:39.61000:02:39.620 reasons why that could have happened and 00:02:41.11000:02:41.120 I think I figured out why I'll tell you 00:02:45.64000:02:45.650 I don't know who installed this furnace 00:02:48.54000:02:48.550 but there's clearly a problem with this 00:02:50.89000:02:50.900 tubular heat exchanger another area to 00:02:53.11000:02:53.120 look on this model you want to look 00:02:55.78000:02:55.790 right down here and if you see holes 00:03:00.01000:03:00.020 there could be a problem I can even look 00:03:02.35000:03:02.360 down in this section and that crimp 00:03:05.47000:03:05.480 where he crimped in to bend the tube 00:03:10.06000:03:10.070 into chamber let's go ahead and look 00:03:12.49000:03:12.500 down here get back in there see if we 00:03:16.06000:03:16.070 can see any pitting our holes so here's 00:03:20.02000:03:20.030 a couple thing that could be happening 00:03:21.04000:03:21.050 one if there's any pitting or holes that 00:03:24.43000:03:24.440 you find down on this lower section okay 00:03:29.72900:03:29.739 picking our holes in that lower section 00:03:31.90000:03:31.910 what's gonna happen is remember what we 00:03:34.30000:03:34.310 teach erratic actions that are 00:03:35.74000:03:35.750 condensing gas furnaces with an induced 00:03:38.08000:03:38.090 draft floor or an event for assembly 00:03:40.09000:03:40.100 cannot really induce traps because it is 00:03:42.00900:03:42.019 actually the entire venting process the 00:03:45.31000:03:45.320 old Mattox pulse at an induced draught 00:03:47.11000:03:47.120 where it actually induced it started it 00:03:48.85000:03:48.860 but these are really vent runners that 00:03:50.14000:03:50.150 are pushing the exhaust out so what that 00:03:52.09000:03:52.100 means is this entire primary heat 00:03:54.07000:03:54.080 exchangers under negative pressure so if 00:03:56.59000:03:56.600 we start to draw air in any other holes 00:03:58.44900:03:58.459 if we find holes and that's where you're 00:04:00.04000:04:00.050 gonna find them if you're gonna look at 00:04:01.24000:04:01.250 by pitting you're gonna find them down 00:04:03.16000:04:03.170 in here and the reason that's happening 00:04:05.08000:04:05.090 is you're getting some condensation as 00:04:06.88000:04:06.890 you're condensing in the primary and 00:04:08.59000:04:08.600 remember anytime you condense in a 00:04:10.30000:04:10.310 primary and bad 00:04:12.86000:04:12.870 here and there you could get something 00:04:15.08000:04:15.090 like this to happen now again I don't 00:04:16.49000:04:16.500 know exactly why this happened I've got 00:04:17.96000:04:17.970 my theories number to share with you you 00:04:21.28900:04:21.299 know that one's ready to bust through 00:04:24.70000:04:24.710 that one's bust it up so let's look at 00:04:27.65000:04:27.660 one other thing and it will recap what 00:04:30.14000:04:30.150 I've discovered and what I've been 00:04:31.43000:04:31.440 discovering on some of these models is 00:04:32.96000:04:32.970 gasket right here 00:04:34.36000:04:34.370 if you look so you know that gasket on 00:04:38.87000:04:38.880 that coupler box they call this this 00:04:41.21000:04:41.220 here is the coupler box it connects the 00:04:43.39000:04:43.400 connects the secondary in the primary 00:04:45.56000:04:45.570 together but if you look down here at 00:04:48.74000:04:48.750 the bottom what do you notice 00:04:51.89000:04:51.900 let's just check in here see what I'm 00:04:57.65000:04:57.660 noticing you noticing leakage see that 00:05:04.65900:05:04.669 leakage and possibly a breach so if 00:05:09.50000:05:09.510 we're drawing air through that gasket we 00:05:13.58000:05:13.590 could end up with this so here's my 00:05:15.80000:05:15.810 summary of this particular chamber this 00:05:19.49000:05:19.500 particular chamber nice number is this 00:05:22.25000:05:22.260 or a heat exchanger number one the 00:05:26.42000:05:26.430 plenum may have been too small so we 00:05:28.19000:05:28.200 could have had airflow problems and we 00:05:30.02000:05:30.030 overheated the primary number two we 00:05:33.11000:05:33.120 could have been over firing the furnace 00:05:34.49000:05:34.500 I have no idea what the gas pressure was 00:05:36.46900:05:36.479 set at number three this furnace I have 00:05:41.30000:05:41.310 no idea what size return air dropper 00:05:42.83000:05:42.840 what size filter they had at it number 00:05:45.71000:05:45.720 four that gasket could be leaking all 00:05:48.56000:05:48.570 right so we could have a number of 00:05:49.87900:05:49.889 different things here's the deal 00:05:52.57000:05:52.580 yeah service techs out there when you 00:05:55.58000:05:55.590 find these kinds of issues don't just 00:05:57.92000:05:57.930 change the furnace investigate check 00:06:00.52900:06:00.539 your static pressures check your 00:06:02.00000:06:02.010 temperature eyes we exert that your 00:06:04.10000:06:04.110 filters are sized according to the 00:06:05.68900:06:05.699 manufacturers specs and on maintenance 00:06:08.21000:06:08.220 for those of you that are out there 00:06:09.80000:06:09.810 performing maintenance and repairs on 00:06:11.30000:06:11.310 these furnaces don't just go in and do a 00:06:13.67000:06:13.680 repair make sure you do a full 00:06:15.50000:06:15.510 evaluation because you can change out a 00:06:17.08900:06:17.099 mint motor on this furnace or capacitor 00:06:19.07000:06:19.080 or a circuit board and then find out a 00:06:21.20000:06:21.210 month later or two 00:06:22.23900:06:22.249 later a year later you have a failed 00:06:23.67900:06:23.689 heat exchanger that you never checked to 00:06:26.10900:06:26.119 start checking those are those clear 00:06:27.60900:06:27.619 bends in love to look for holes and 00:06:29.94900:06:29.959 pitting that's a problem number two you 00:06:34.20900:06:34.219 have to get around that coupler box from 00:06:35.70900:06:35.719 the back and if that gasket is weakened 00:06:37.26900:06:37.279 guess what you have challenges so that's 00:06:40.02900:06:40.039 a little bit of in the rabbit Tech 00:06:41.76900:06:41.779 program as you know recover why heat 00:06:43.95900:06:43.969 exchangers fail we'll talk about all of 00:06:45.84900:06:45.859 those but hopefully this helps you this 00:06:47.61900:06:47.629 the model GTS by Goodman alright so 00:06:52.28900:06:52.299 there you have it sorry about the 00:06:54.09900:06:54.109 sniffles in the video I'm sure somebody 00:06:55.86900:06:55.879 I'll come it down that then beating a 00:06:57.72900:06:57.739 fighting it cold but I'm not one of 00:06:59.16900:06:59.179 those guys that doesn't go to work 00:07:00.54900:07:00.559 because I have a cold I work I love 00:07:02.40900:07:02.419 doing what I do I love doing this stuff 00:07:04.80900:07:04.819 by the way this is awesome so let's just 00:07:07.95900:07:07.969 hop really quick let's let's just talk 00:07:09.36900:07:09.379 about what to look for our soul anytime 00:07:11.73900:07:11.749 if you're a maintenance tech if you're a 00:07:13.74900:07:13.759 repair tech out there or if you're 00:07:15.06900:07:15.079 entering the HVAC trade if you come 00:07:18.42900:07:18.439 across a furnace that has a tubular heat 00:07:20.61900:07:20.629 exchanger like this one number one check 00:07:23.88900:07:23.899 those crimps on those two bends you have 00:07:26.52900:07:26.539 to check all of them and you have to 00:07:27.96900:07:27.979 look for very tiny holes we're seeing it 00:07:30.57900:07:30.589 and we're seeing lots of them one of the 00:07:33.36900:07:33.379 companies I own we probably change out 00:07:35.52900:07:35.539 on an annual basis we probably change 00:07:38.22900:07:38.239 out north of 100 heat exchangers a year 00:07:40.89900:07:40.909 or even more so make sure you check in 00:07:44.01900:07:44.029 those two bends check that gasket behind 00:07:46.14900:07:46.159 the furnace you have to have the correct 00:07:47.64900:07:47.659 tools to do it but check that gasket 00:07:49.23900:07:49.249 because if that gasket is rotted out or 00:07:51.27900:07:51.289 leaking there could be a problem the 00:07:54.15900:07:54.169 other thing every single demand call or 00:07:56.52900:07:56.539 no heat call and every single 00:07:58.65900:07:58.669 maintenance call you need to check your 00:08:00.66900:08:00.679 temperature eyes your static duct 00:08:02.76900:08:02.779 pressures your gas pressures your Delta 00:08:06.10000:08:06.110 T's make sure that your filter sizes are 00:08:08.85900:08:08.869 compliant with the manufacturers specs 00:08:11.33900:08:11.349 those are the things to check now 00:08:13.74900:08:13.759 possible causes in this particular model 00:08:17.01900:08:17.029 so we could have had a high static 00:08:19.08900:08:19.099 pressure problem as a result of a couple 00:08:21.81900:08:21.829 of things one undersized plenum - it 00:08:25.86900:08:25.879 could have been too small of a return 00:08:28.01900:08:28.029 three it could have been too small of a 00:08:30.24900:08:30.259 filter or lack of maintenance where the 00:08:32.61900:08:32.629 filter was was not being changed off not 00:08:34.99000:08:35.000 often enough 00:08:36.02000:08:36.030 and also be really careful with some of 00:08:38.39000:08:38.400 these filters with the high Merv ratings 00:08:39.95000:08:39.960 there - air restrictive three or 00:08:42.62000:08:42.630 manometers or check that to check that 00:08:44.27000:08:44.280 pressure drop across some of these 00:08:45.89000:08:45.900 filters today you're gonna find out that 00:08:47.36000:08:47.370 they're too restrictive so what you do 00:08:49.61000:08:49.620 in that case is if you want to install a 00:08:51.17000:08:51.180 good filter on a furnace oversize the 00:08:53.87000:08:53.880 filter you can never go wrong over 00:08:55.91000:08:55.920 sizing the filter and by the way I 00:08:58.16000:08:58.170 always recommend if you can bottom-mount 00:09:00.41000:09:00.420 returns bottom on return is the best on 00:09:03.08000:09:03.090 any furnace today with a large filter 00:09:05.71000:09:05.720 all right back to possible causes too 00:09:09.08000:09:09.090 high of gas pressure that could be an 00:09:12.14000:09:12.150 issue you know you start running into 00:09:13.31000:09:13.320 higher gas pressures you're going to see 00:09:16.34000:09:16.350 problems like this the other thing that 00:09:18.38000:09:18.390 I didn't mention in the video vent 00:09:20.99000:09:21.000 piping so let's just say that each one 00:09:23.72000:09:23.730 of those items we talked about let's 00:09:25.16000:09:25.170 just say a little bit of it's a problem 00:09:27.29000:09:27.300 or a little bit of his out of spec maybe 00:09:30.11000:09:30.120 the venting is a little too small maybe 00:09:32.21000:09:32.220 the duct works a little too small it 00:09:34.25000:09:34.260 makes just a little bit well guess what 00:09:35.99000:09:36.000 that all adds up to create a major 00:09:37.28000:09:37.290 failure so that's all you need to know 00:09:41.09000:09:41.100 about that model gks heat exchanger just 00:09:43.55000:09:43.560 check those check those items and I 00:09:46.28000:09:46.290 think you'll you'll do well for your 00:09:47.87000:09:47.880 customers but but don't be lazy guys 00:09:50.18000:09:50.190 we're changing this industry through 00:09:51.50000:09:51.510 rapid tech we're trying to change the 00:09:52.76000:09:52.770 industry and get technicians the proper 00:09:55.28000:09:55.290 real life experience training that they 00:09:57.68000:09:57.690 need so that when you go into a home to 00:09:59.87000:09:59.880 change an igniter or an inducer motor or 00:10:02.00000:10:02.010 a capacitor you're also checking some of 00:10:04.22000:10:04.230 these other things and you basically go 00:10:06.32000:10:06.330 from being a zero to a hero right 00:10:07.79000:10:07.800 because some technicians out there they 00:10:10.64000:10:10.650 don't check it and when you start 00:10:12.44000:10:12.450 checking it you're going to start to see 00:10:14.12000:10:14.130 see the problems and you'll be able to 00:10:16.40000:10:16.410 bring it up and address it with your 00:10:17.48000:10:17.490 customers and by the way when you have a 00:10:19.73000:10:19.740 furnace that's up that has the correct 00:10:21.23000:10:21.240 static pressure correct filter correct 00:10:23.51000:10:23.520 venting correct gas pressure you throw 00:10:25.67000:10:25.680 your combustion analyzer on there you're 00:10:27.92000:10:27.930 gonna you're going to give that customer 00:10:29.35000:10:29.360 exactly what they want the comfort all 00:10:32.00000:10:32.010 right you're giving them comfort you're 00:10:33.47000:10:33.480 giving them efficiency and you're giving 00:10:35.96000:10:35.970 a peace of mind and longevity out of a 00:10:37.70000:10:37.710 out of a furnace so last thing is my 00:10:43.34000:10:43.350 name is again Steve Holland if you want 00:10:44.93000:10:44.940 to email me it's etho skill e th OS ki 00:10:47.99000:10:48.000 ll at GE 00:10:49.25000:10:49.260 calm or you can call Scott at eight six 00:10:52.49000:10:52.500 six nine nine to 1717 if you'd like to 00:10:56.48000:10:56.490 join the rapid tech program take the 00:10:58.10000:10:58.110 heat exchanger certification and like I 00:11:00.29000:11:00.300 mentioned rapid tech is a national 00:11:02.23000:11:02.240 nationally recognized certification 00:11:04.01000:11:04.020 program and you'll love it in the 00:11:07.31000:11:07.320 courses that we have available what we 00:11:09.05000:11:09.060 have in store for 2017 and 2018 will 00:11:12.50000:11:12.510 blow your mind as technicians so anyway 00:11:15.02000:11:15.030 have a great evening 00:11:15.83000:11:15.840 thank you so much and I look forward to 00:11:18.28000:11:18.290 getting you some more videos
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