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00:00 [Music] 00:09 the ninth question we get asked all the 00:11 time is how do you know my duct systems 00:13 leaking or is it leaking depending on 00:15 the variation of the the question it's 00:19 easy on some duct systems to do a visual 00:21 inspection and see that the duct system 00:24 is leaking if you have an old metal duct 00:26 system that has a yellow fiberglass on 00:28 it you'll see black rings every three to 00:31 five feet and where you see the elbows 00:33 where it turns those 90s and 45s you'll 00:35 see black rings around there most people 00:38 can easily walk into their garage if 00:39 that's where their furnace is located 00:41 and they'll see a bunch of black rings 00:42 around the ductwork in the garage 00:43 what's happening there again is the 00:45 venturi effect where there is a high 00:47 pressure leak to a low pressure area it 00:50 creates a suction so that fiberglass 00:52 acts like a filter so the filter in your 00:54 home that you're supposed to be changing 00:55 every sixty to ninety days is the 00:59 fiberglass and that fiberglass turns 01:00 black or at least and pulls that air 01:03 back in that's an easy way to visually 01:05 inspect that the duct system is leaking 01:07 on some of the newer duct systems it's 01:11 not as easy to see that sometimes you 01:13 got to peel back the connections and see 01:14 if it's properly affixed to the system 01:17 but we have guys that can come out and 01:19 actually pressure test the duct system 01:20 and tell you what your leak rate is and 01:23 what it should be so we can we do it 01:26 either way some people want the service 01:28 of the guy to come out with all his flow 01:30 hoods and it's pressure testing 01:31 equipment some people just need the 01:32 visual inspection and they can see that 01:34 it's leaking put a tissue up to it and 01:36 the tissue starts wiggling around it's 01:38 you know it's all about just inspecting 01:40 the duct system whether it be with 01:42 computer equipment or just a visual 01:44 inspection 01:45 [Music]
