Tankless Water Heater Install | Existing Home
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- Опубликовано: 11 янв 2021
- In this video Paul installs a tankless water heater in an existing house. This is for some family nearby that wanted to switch from their old 40 gallon to a tankless.
We're waiting on drywall at the Mad County Build, so it seemed like a good time to get this job done!
There will be another video in the coming months installing the tankless water heaters in a new build.
Check out the post on our website for more about this episode including tools and supplies you'll need: marshallremodel.com/tankless-...
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Great video on the installation and troubleshooting the Gas line pressure leak.
One of the best start to finish installations I've watched.
Well done!
Ive been installing tankless water heaters for over thirty years they have come along way but depending on your water quality my suggestion is buy two heaters because when something goes wrong it can take days to get parts if happens Friday order parts on Monday could take four of r five days no hot water trust me
Thank you! This was the best tankless water heater video I've seen so far.
This was an exact replacement for the old one that lasted about 10 years. ruclips.net/user/postUgkx7yWIKcrbA9KMHkGSfcgxW2lsjHT6B8Sh The top of my mitigation tube by my roofline was just a 90 elbow which allowed too much debris to fall down into the fan, eventually ruining it. Without this issue, I bet it would have kept running another 10 years. When I replaced this fan, I added an extra elbow joint so the top tube now it does a 180, which should solve that problem. The radon guys around here wanted to charge me a $300 diagnostic fee, then parts/labor (probably close to $600 total). I installed this all by myself in about an hour for the cost of the fan; it would probably be even easier/faster with two people. FYI the manufacturer's warranty greatly differs depending on whether you install it yourself (1 yr warranty) or have a licensed installer do it (10 yrs).
Thank you for showing what a leak looks like and why it's important to check for them. Great video
Nice clean install, good meticulous workmanship! I, too, am leary of pex. I like soldered copper…..but learned a lot…nice diy job!
Love my tankless hot water heater!
We had a Navien Combi boiler installed during our house remodel back in 2016. The house was damaged from Hurricane Sandy. Entire new heating system was installed. We love the unit, our gas bill went down and the house is much warmer than before.
Great video. You are real professional plumber. You know how to be careful to check the gas leak before making tightening pipe without any further leak. Congratulations!
very well workman and you explain step for step how to install. Thanks a lot.
Great help. I have 90%of my Rinnai water heater hooked up. Now I have the confidence to finish the installation after re-reading the installation manual. Thank you!
@@immachine1565 No need for one on a tankless, they dont hold hot water.. they just heat it and send it through.
Should take off the cover and check for gas leaks inside the unit, the manufacturers work needs to be field checked and twisting on water tank gas connection without a proper hold wrench can twist the connections inside the tankless unit and cause leaks. When tightening fittings in close areas always use two wrenches.
Nothing like a brother-in-law with skills!
It can suck being the brother in-law with skills.
Lol
Im a licensed master plumber and trained by rinnai us as a level 4 tech. I can tell you number 1 the gas line is undersized. Unless you installed the lowest btu possible unit your probably running 150,000btu min. You should be running a 1” gas line from the meter to the tankless directly depending on the length an material it could be larger. Second the flue although spaced properly which is good unfortunately it’s in an inside corner which will cause the exhaust to periodically be sucked into the intake which is bad news for the burn chamber.
And the gas meter is too small.
Yep, another Carpenter playing Licensed Plumber. No issue with insurance and permits? HA!
So many issues...
No Plumbing Permit
No Gas Permit
Sch 40 pvc no longer legal to use (at least here in MASS!) for the guys exhaust
No Liability Insurance
Push to fit valves
Valves under heater not for "draining" but for annual flushing of the heat exchanger
Condensate not proper
I could go on and on...
He is qualified to run those 2x4's down from the floor joist though.
Not doing his family any favors here.
Looks perfect to me
Piping as the crow flies is terrible. Straight, square piping only
@@tomhill9027 This install would never pass inspection in Colorado or not in my county anyways. The issues you mentioned plus a couple more. Rinnai and Rheem both teach a very different setup and installation that would meet code. I usually do not comment but that install would make me nervous. The homeowner can pull a permit personally, but that would fail instantly with about six violations or unacceptable items. I guess as long as it works and nobody gets hurt.
Great Video,,,Thank YOu for Posting.
If the drain fittings were rotated about 45 degrees or so towards the front it would then be much easier to connect hoses for flushing the unit as required.
Great video!!! Thank you very much for posting this I am glad i found you .
Glad it was helpful!
Love the title of the video, Would be amazed to see you install a water heater in a non-existing home.
It's a retro-fit install, versus a new build home which is very different - hence the title.
Nice job you make it look easy!
Thanks 👍
Clean and great…!!!
Good job…!!!
Thank you!
Thank you sir! Me and my wife used your video to install the same water heater .
Awesome!
You do nice work! Wish you were close by....plenty of projects around here! LOL!
I have never had a tankless, have had water heaters installed myself pretty easy (last one cost me $600) lasted about 10-15 years little maintenance. Tankless DYI like this guy if not you probably need to get some pro to install $3k to $6k. 1 )Biggest selling point of tankless used to be instant hot water (I was always skeptical-how!?) now it comes to light that that is bogus... 2) Also big energy cost savings $8 a month = that will take 50 years to pay for itself. Total no brainer for me (my opinion vast majority of people) tank water heater until tankless gets way way cheaper which doesn't seem to be anytime soon.
Well tony d..would like to go see u buy a tank heater now for 600 bucks u would end up with a 40 gallon cheapy from manards that would only last u prolly 8 years if u lucky & that would be no where as efficient..and yes if the unit is hooked up properly & every thing is sized accordingly or unit is not undersized u will get hot water to the fixture very quickly..far as only saving 8 bucks a month on cost to run I would say that's a little off as well.. considering the tankless does not need to hold water and continuously heat it as a tank type does or take the amount of time the tank type does to get u up and running to have hot water again after your teenager drains it with half hour showers or more..also most likely depending on what u would need to keep up with your use load u would only spend around $1500 for a quality brand tankless not 3 to 6k..well add around 3 hundred bucks or so for the material still way under plus u do your own like u said so save ton on labor too right..
At this point, a tankless heater costs just about the same as a decent tank heater, sometimes less. They aren't that expensive.
5gpm tankless are around $800 now, not much more than a tank
Thank- you for taking the time to make video excellent workmanship.
done this many times when I worked in residential. There are a few things people need to consider before switching to one of these, first, if your house is still plumbed in old galvanized pipe forget getting a tankless unless your going to rip it all out and replumb in copper. secondly you need to have the right size gas line available and the BTUH available to run the tankless. I have seen on some small houses with small meters that have multiple gas burning appliances run out of gas cfm running multiple appliances while trying to run the tankless. I personally run both the intake and exhaust at the same angle just for the symmetry of railroad tracking the lines but to each their own.
Johnny B. What about galvanized pipe doesn’t work with a tankless heater? I mostly switched to pex but some of my hidden piping I left alone
@@jeffhuntley2921 The problem with galvanized pipe is that it rusts closed and restricts the water flow. Tankless water heaters heat large volumes of water with high delta T in short amount of time, water flow is important. If it works at all, it will only cause premature failure of the heater over time and unsatisfactory performance.
If I walked into that basement and saw that "shoe-makers" assortment of plumbing issues(tub drain blocking window from opening? Haha),rat's-nest of pex piping and electrical wires,cinder block foundation,too?
I'd walk away.
@@jeffhuntley2921 👋
@@raycumpian2864 ya thats not a basement I would use for a first date
Great job!!
Tankless is awesome. Had mine for 6 years no complaints. Annual servicing but that's it. Good investment.
Hey man I wanna tell you I enjoy your videos. Like you I have just build my post frame house in southern indiana. Worked on it every day for the last 6 months and it's coming to a close. I have had help from a couple family members. Every time I come up the driveway my sense of accomplishment is like nothing I have ever felt. Thanks for your videos I found alot of inspiration when times got tough by watching your videos. Also alot of good ideas and tips along the way. You have been a real blessing to me and my project.
Thank you so much for your comment and encouragement. That's amazing. We'd love to see photos of it if you want to share.
Don’t like how many gaskets on the the more seals more chance of leaks there are better gas piping systems to use
Que padre amigo, gracias. I'm ready to get my tankless installed, I now know what to expect.
Also make sure unit is serviced once to twice a year also add a filter onto the cold water inlet to the tank to keep scale build up down on unit.
Flush , clean flame rods and check filter just a few tips and info also put a gas shut off before sediment trap so it can be serviced if need be.
Hard water is never a friend to a tankless. Low volume of water with a lot of Btu's= lime scale in the heat exchanger. At least once a year a clean and flush. Also no condensate neutralizer, by product of any modulating condensing unit is acidic water. It can and will eat through copper and cast iron pipe and etch concrete. Also not good on septic systems.
@@mattjarchow4965 The unit comes with a built in condensate neutralizer.
Awesome video as usual, very informative thank you
Thanks for watching!
Fantastic video, nice clean job
Thank you very much!
I know your family is going to love the benefits of a tankless water heater system. Nicely Done!
You all prolly dont care but does anybody know of a way to get back into an Instagram account??
I was dumb forgot my login password. I love any assistance you can give me.
@Gordon Cullen i really appreciate your reply. I found the site through google and im trying it out atm.
Takes a while so I will reply here later with my results.
@Gordon Cullen It worked and I now got access to my account again. I am so happy:D
Thanks so much you saved my ass :D
@Bentlee Remy Glad I could help =)
Very good video, easy to follow and understand.
Thanks for watching!
dude, great video. thanks for your time.
Super video!
Though get some better csst, without an o-ring. I have never seen that stuff.
Usually you put the clip 2 rings back and it presses the stainless against a brass surface to seal...
Also two more things 1"x3/4" npt "bushing" and what you guys call a sediment trap. In gas we call that a "drip leg".
Thank you. Needed this.
Thanks for watching!
. Also I avoid csst as I feel it can be dangerous. I use iron pipe or soft copper and silver braze.
Nice install, very clean and you covered every step. Impressed by your approach, attention to detail and most of all your care to doing the job right. God bless!!
Much appreciated!
Clean install? 🤣😂
@@plumber79 I was thinking the same. Think of it this way, at least it’s not in your house. It’s funny how my wife complains about me being a perfectionist, but my customers don’t.
One of the most thorough installation videos I've seen - well done
Thank you!
How do you determine the size gas line needed?
@@phillipmontoya5326 The Richmond units require a 1/2 gas feed. Other units may vary, just read the installation instructions.
Excellent video 😊
Great video. Much appreciated!!
Any reason you didn't hang the water heater nearer to the vent exit? I find the small pressure lines (incl gas) easier to run and they take less space than running the vent lines to the other side of the room.
greetings to all who like this show I enjoy it too
Greetings Rosy:)
The electrical wiring blows my mind.
Hey bro, this looks really straightforward, I really appreciate the info and play by play. Our hot water heater (from 1993 lol) just died, and you’ve instilled confidence in this machinist/fabricator to install a tankless on my own. Only questions I have are regarding permitting and insurance after the fact. If there’s something you could say with regards to that I’d be very appreciative. Cheers.
Thanks for your comment! Homeowners insurance doesn’t seem to be an issue. Permitting is going to be based on where you live and what your county/city requires.
Holy shit 1993 dam built well
@@MrPostFrame Till the home inspector shows up.
@@MrPostFrame insurance isnt going to pay to fix their slab after you destroyed it with condensate.
From what I've read, if the work is not done by a licensed installer, the warranty is void on the unit and possibly your homeowners insurance won't cover any issues caused by incorrect installation
Nice work man! I learned a lot! Thank you for posting!
Bushings on gas fittings? Use bell reducers👍!
Really appreciate this video! Trying to decide if I should go tankless or not and if i do if I can handle the install myself.
If you do not need big demand of hot water, do not get a tankless, DO THE RECEARCH
Thanks for posting! Looking at replacing my boiler with one of these combos. What do they require from the electric panel? Thinking just a dedicated 20amp?
If I was inspecting this installation, I would cite and write 3 corrections: 1] The T & P valve needs to terminate to an approved location. 2] PEX needs supporting every 32".3] Provide a gas line schematic when tying into an existing system. Other than that, nicely done!
Mike, any ideas about this 👇
For anyone watching this, what kind of hangers and brackets can be used to secure the iron gas pipe ?
I’ve run into a situation where the gas pipe has a long run without support. It just hangs there and will wobble around if anything disturbs it. Just touching it, makes it shake badly.
It’s not good.
And any answers will be “for entertainment only.”
Thanks.
My dad taught me to do pipe dope, tape and then pipe dope🤷♂️ we all got taught differently clean install👍.
Your dad isnt the plumbing code
@@greencolombiano never said I do it that way just a way my dad taught me at work I do tape and then pipe dope 🤦♂️
When I built this house 5 years ago I chose a tankless water heater/boiler. I have no regrets. I've never run out of hot water. We're on well water so I'm more likely to run out of water before I run out of hot. I do the annual maintenance on the water heater side which consists of recirculating a mild acetic solution for about an hour.
Do you have hard water is it filtered and water softener used from the well. I was thinking of installing one I’m a seasoned DIY .
@@blt981 We are on well water, It's not softened or filtered. I clean annually with pump and dilute acid. They sell kits with a bucket, a pump and the hoses to connect to your heater as well as the chemical. Our water is pretty soft. Soap lathers readily. We do get mineral deposits from water but it is in solution within the system and doesn't form until exposed to air.
I saw a suggestion about screens on the PVC due to rodents. It's usually a bad idea on the exhaust, and some instruction manuals will say that. Flue gases on high efficiency units are cool and moist, so will immediately condense on cold hardware cloth screens. (rapidly) That starts a death spiral and an ice dam is built quickly in cold temps. The pressure switch sees an obstruction and the unit shuts down. In practical terms rodents don't enter, but ice dams will form all the time below 20F. FYI.
Great explanation of this. I was looking thru comments to see if anyone had already said this. Obviously doesn't apply with homes in warmer climates.
Nice job very nice job
Very nice , Great job . Thank you for the share. RL
Thank you!
In Massachusetts we can’t use pvc anymore for venting the glue dries up depending on temperature and btu rating the glue dries out and leaks we now can only use polypropylene pipe and have to have an acid neutralizer kit for condensation so it doesn’t cause acid erosion of drain pipes and sump pumps nice clean install except the pen could have been a little neater they do make elbows and straight pipe with clamps to make a nice neat professional job
Nice job dad.
You didn't mention that if the power goes out there's no hot water. Secondly the system has to be cleaned out at least a year. Another great video. Thank you.
How’s that different from any other electric hot water heater? U may get what’s warm in the tank but you’d have to use it right away.
@@malinoisnation9392 he replaced nat gas w/h not electric. Electricity goes out, no hot water. Once a year flush and clean or warranty is void too. I like tankless w/h, easy service calls
The system really needed a anti-scale filter and a water softener installed together to keep from having to flush the system. It really makes a huge difference.
It would be nice if you would mention about making sure with the BTU's you are adding to the gas system,, that everyone needs to make sure your gas piping is sized correctly to handle all the gas appliances, I got to jobs everyday and see that problem, plus jack legs in our area are installing these units and not getting them inspected like they are suppose to, to make sure these units are installed the way they need to be.
Nice handyman work
So I have heard that the maintenance is much more involved with tankless systems. Do you have a video on that aspect of the tankless water heaters? Thanks for the videos, they are very informative.
We don't, but still need to do a video on the install in our new build. That's a great aspect to include in a video.
Sounds great!
Circulate vinegar through the system. Doesn’t get my mor straight forward that thank.
Didn't know you could use flex for gas, good to know.
That's the only thing I don't like . Little scary.. 😂
Thank you alot
Thanks for watching!
Great stuff as always. Appreciate it!
Thanks for watching!
Nice video. Easy to follow. One question, what is the reason for having two valves on both the hot and cold? If you already have the valve kit that screws directly to the heater, why put yet another set before/after?
Just for whatever in case you need to remove the hot water heater maybe to a different location. Other then that there’s really no purpose.
This is why you get someone who knows what they are doing. Great job! Enjoyed.
Thanks for watching!
There were a few mistakes made. Read the comments. Other people have pointed them out.
@@SergioPena20 I don’t think you want a shut off on your hot water side either, I don’t know much about tankless water heaters but I’m familiar with hot water tanks
@@murkyturkey5238 with the tankless you have a valve on the hot and the cold so you can flush out the heat exchanger once a year we have one and we love it
So exhaust and intake can be side by side? Thanks for the share
Hey Marshall, you mentioned it was a family member you did the work for, and keeping costs down is pretty important.
I dont know your background but I do have a couple of questions if you wouldn't mind answering.
1) why use pex over copper for the cold supply and hot supply? You secured the 2"x4" to the wall. Why not just use bell hangers to secure the piping to the to a 2"x 6" instead? I also noticed that you've used shark bite valves, I've had terrible luck with those on huge temperature swings.
2) do they not require a condensate neutralizer where you live? We do up in Canada. The condensate is very acidic and eats out old underground piping unless it's the very old clay tile.
Great video otherwise 👍
1. pex is resistant to corrosion and acidity more than copper is, I agree SharkBite's are garbage and not even allowed at most professional plumbing outfits
2. most residential codes do not require a neutralizer kit below a certain BTU value
This unit, like all the Richmonds comes with a built in condensate neutralizer.
Tremendous video, one question, I can do all of that, I'm a plumber, but they tell me that they have to be someone with a license, when the inspection arrives, they will have a problem for me, which is true ?
Great job explaining and doing it. Appreciate it.
Great vid! Thnx
while you were there, shoulda put a master shutoff valve inside the house. :)
Love the Thomas Edison quote!
I’ve always thought these were a lot more difficult to install. Nice job. What is the GPM on this unit?
I thought the same thing! Good video, less fear now... 👍
thank you
another interesting video Marshall, quite complex really.
Thanks for sharing
Glad you enjoyed it
Can you use these with propane? Do they come with the orifice or do you have to switch it out.
Excellent tutorial and such a simple clean set-up!
Thank you!
The intake vent has to be at least 30" from the ground to avoid the white stuff covering it
How much is the approximate cost of installing a thankless water heater. With and without partsm
I get made fun of at work for being a nj plumber who runs pvc working in nyc where they still do cast-iron, kinda mind blowing what other people around country are doing we sweat copper pipe and run black steal for gas this type of work being done realy takes the art and skill out of the trade, take the extra time to do things like a pro your work will last longer and you're customers will know the difference.
Those gas fittings he installed would eventually dry out...black pipe,baby!
Was that your complete test procedure for the gas?
I not sure but in California we use copper from water heater up the wall exposed mount to the ceiling and from the ceiling we use Brass Adapters to pex and ur missing insulation on the line
This doesn’t need an expansion tank? What if it does both hot water and heating concrete floor with pex in it?
Great stuff! Keep it coming!
Thanks! Will do!
I always use the Polish chart for torque specs. Tighten til it break. The 1/2 turn flex gas line remind me of that chart
Which drain did you use for the condensation?
I am planning on removing my water heater and put tankless water heater. My current water heater is using PvC for vent. And it goes up in the attic to the roof.
So my question is can I use my vent That I currently have on my tankless water heater? It about 20 to 30 going up? Pvc
I have a tankless water heater in a tiny house in the mountains that is powered by a generator…I have winterized in the past with antifreeze but heard these units have freeze protection! Can you provide any recommendations?
Looks like the same Richmond I have. I hope you have better luck. In 5 years I'm on my 3rd mother board, constantly have to clean my flame rods and get a new error code monthly. It's nice when it works but has proven to be unreliable.
200K Btu tankless/ 60k furnace/38K Stove = 298,000 Btu 1inch line....10ft of one inch does 387K.....20ft of pipe on 1inch 280K btu.............250k btu meter....... every 90 elbow is 5 feet ...... Have ya had issues with it especially in the winter? Confused .....Curious thanks
I believe the relief valve needs a line close to the ground
If it is close enough can you you use the old metal tank exhaust duct that goes up the chimney? If not, can you duct the pvc up the chimney?
No, this is a cold exhaust. Can not go in the chimney.
How long did it take you to do that job?
hi, nice work. so no need for an expansion tank?
Good job, the only thing I can see that would be called by the inspector is you have to bush down at least 2 pipe sizes with gas or use a reducer.
The valve kit has built in shut off's, but you also installed them on the lines. Is there a particular reason to have both? Sorry if I'm missing something obvious and thanks for the video.
Yes it is for flushing purposes
hack and slash job, brutal
I don’t have a drain nearby you think I can just dig a whole and put some rocks and have the condensation line drain there ?
Yeah, no way. I would definitely not do that. Condensate is acid and that would never pass any sort of code requirements.