Understanding Improvements to PVC Gas Ventilation | Ask This Old House
HTML-код
- Опубликовано: 9 янв 2020
- Ask This Old House plumbing and HVAC expert Richard Trethewey explains why standard PVC should not be used to vent gas appliances and what should be used instead.
#ThisOldHouse #AskTOH
SUBSCRIBE to This Old House: bit.ly/SubscribeThisOldHouse
Steps:
1. Gas appliances create flue products which include temperature, carbon monoxide, and sometimes moisture. These need to be vented outside to prevent poisoning (in the case of CO), mold, and mildew.
2. As appliances have become more efficient, traditional venting gave way to direct venting outside. This made venting with metal pipes obsolete, since eventually they would rust due to the moisture buildup.
3. For years, contractors vented flue products with PVC pipes. This is no good because PVC can’t withstand the heat that comes out of gas appliances, so eventually they fail and crack.
4. Code now requires that PVC vent pipes and fittings must come from the same manufacturer (to ensure a tight fit) and they must be rated for venting.
Resources:
Richard demonstrated vent piping from IPEX [amzn.to/2MVoFFo].
About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers-and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.
Follow This Old House and Ask This Old House:
Facebook: bit.ly/ThisOldHouseFB
Twitter: bit.ly/ThisOldHouseTwitter
bit.ly/AskTOHTwitter
Pinterest: bit.ly/ThisOldHousePinterest
Instagram: bit.ly/ThisOldHouseIG
Tumblr: bit.ly/ThisOldHouseTumblr
Keywords:
This Old House, Ask This Old House, DIY, Home Improvement, DIY Ideas, Renovation, Renovation Ideas, How To Fix, How To Install, How To Build, plumbing, Richard Trethewey, Kevin O'Connor, PVC, gas appliances, ventilation
Watch the full episode:
www.thisoldhouse.com/watch/ca...
Understanding Improvements to PVC Gas Ventilation | Ask This Old House
/ thisoldhouse 
Хобби
I haven't heard anything about this pipe change. Been using pvc
Great simple video, thanks!
Haven’t seen plumbers using that here in NY in new homes or Reno’s
Valuable, helpful information.
I love these guys. Ty !
Hi TOH , thanks for showing us the proper way too vent the gas out of our home , so it's safe , I'm always afraid of an explosion because of natural gas or propane , with all of the gas explosions that I've seen on the news !!! 👍😃🔨🔩🔧
I like PVC and the better product you are using. Metal corrodes, rusts, forms holes and is usually bent all over the place with all kinds of joint leaks. PVC and PVC rated for venting is much easier and safer. Nice video. Quick and to the point.
I just had a new furnace installed in a mobile home. We were allowed to instal a house furnace because of the higher efficiency and we wouldn't be forced to change the roofjack. The installation was done with white pvc. Do I need to change it out or can it go for a while. We are on a fixed income and can't deal with a costly fix.
Had no clue pvc was even used considering how much of a deal they make about how hot it gets. My pipes from water heater don't get as hot as I thought but the temperature change is excessive and why I think metal is preferred. Most recommend Type B pipes(expensive) over single sheet. I also highly recommend a CO detector, had a co-worker leave car running and it went into the house.
Do you have any information on the HOYME Damper?
Maybe I missed it - but is the black ABS?
When was this new pipe made code? We still install pvc pipe on water heaters and hvac units.
In Massashuett you are allow to use PVC for venting for power vent water heater and furnace. For boilers you must use the black pipe .
Okay but if you use a condensing gas water heater PVC would still be acceptable right? You're just discussing Atmospheric and Direct Vent?
Any answers to cold air coming out of a couple year old hvac system? All enclosed with drywall and I don’t know if it’s insulated per distance and per room?
does black furnace vent pipe safe to hook to the furnace forced hot air furnace and it will not melt.Or does the coupling piece with stand heat from furnace
Code ask in Hamtramck for CPVC
My gas water heater has this problem and is vented to the chimney. When I bought the house, the home inspector told me that carbon monoxide might not exit the chimney properly. In the meantime I put a CO detector with a LED display right by the heater.
I HIGHLY suggest having a carbon monoxide detector in your house.
Where do you find the black gas vent pipe?
The 2020 NEC is out; maybe the HVAC instal was updated with there’s?
where to buy these gas vent categories pipe? amazon or home depot link?
There is dripping inside the part of the furnace exhaust pipe that is still inside my house. How can this be fixed? The dripping noise is very annoying which can be heard on the upper level of the house.
Hi, I have been watching this old house for as long as I can remember. One thing that has never been talked about (as far as I know) is where to place the carbon monoxide detector. I have always put it near the ground as the gas is heavier than air so to get the most amount of warning it should be there. I have been in hundreds of houses and the detector has been on the ceiling with the smoke detector, and now you can get them both in one unit, so where should it be located!.
Where Should I Place a Carbon Monoxide Detector?
Because carbon monoxide is slightly lighter than air and also because it may be found with warm, rising air, CO detectors should be placed on a wall about 5 feet above the floor. The detector may also be placed on the ceiling. Do not place the detector right next to or over a fireplace or flame-producing appliance. Keep the detector out of the way of pets and children. Each floor needs a separate detector. If you are getting a single carbon monoxide detector, place it near the sleeping area and make certain the alarm is loud enough to wake you up. -EPA
Follow the manufacturer's directions in the paperwork you get with your CO detector. It clearly states exactly where to put the detector.
Natural gas is lighter than air, propane is heavier.
If you have natural gas put it on the ceiling
that ipex 1738 is great for the consumer but hell on the installer it's filled with harmful chemicals and even a quick glue up in a small mechanical room without a respirator will have you dizzy af
Centrotherm is the best plastic vent pipe on the market. it's not PVC it is polypropylene and polypropylene can handle higher temperatures, and it is the only plastic vent pipe that is UL-1738 in the USA
Why we don't heat the water with the hot CO2 from the combustion of the furnace exhaust (Winter), a spiral cooper pipe thru the outer pipe that go to the roof?
Maybe in the old days when they were 60 70 80% efficient you could have reclaimed the heat but now with 96 98 99% efficient furnaces you're not going to get much heat from the exhaust.
I'll stick to inefficiently venting it out the top.
while you can
What do you recommend about those of us who have older houses with flues and who have upgraded to more efficient appliances? Should I install a fan?
1stGruhn A fan for what?
@@DONALD1951 If I understood him, he said that more efficient water heaters don't have as hot of exhaust thus don't create the same draft speed thus normal flues don't vent properly. Thus a fan to power exhaust the fumes from the gas water heater. My heater is in the middle of my basement, side venting isn't really an easy option.
what kind of appliance you talking about?
@@QnQoooo a recent and efficient conventional gas water heater
1stGruhn a tank type chimney vent water heater like the one shows in the video?
Taking efficiency to extremes can be just plain silly. I believe in the KISS rule for many things in life including HVAC.
Why does the Resource link Richard demonstrated vent piping from IPEX go to a paid web site ?
no info on CPVC here ..... Not Like TOH.
I always wondered about those PVC installations when I saw them here. It's not like someone couldn't have figured this out in advance. I guess american building codes aren't that strict?
Sorry, I'm calling BS on this. Canada requires this special heat vent PVC, but the US does not. Just look at the fact that in Canada Home Depot stocks 636 PVC, and in the US they don't even list it on the website. Anybody know of an actual document that shows this PVC is REQUIRED and not just "recognized as acceptable"? And it's clear the examples they have combine both PVC elbows (bright white) and CPVC (more yellowish). The color is not from aging, it's the type of pipe.
Just use metal!
I heard Richard is still driving around with the toilet cut in half in his truck.
What would the average home owner care. This is for installers, and if a home owner is trying, they have a fool for a client.
Hi this is cool i am the 2nd comment hi tj
Blame California.