Hot water heater replacement

6,274 Views | 48 Replies | Last: 4 yr ago by 1208HawkTree
aTm2004
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I went up in the attic yesterday to make sure things were good for the upcoming freeze and noticed water in the pan of one of the hot water heaters. Not good, so I had a plumber come out today to see if it was something that could be fixed or if it needed to be replaced, and he stated it was due for replacement. The house is 24 years old and they look to be original, so not going to disagree with him.

The quote he gave me was $3360 to replace both (2 50gal in attic of 2 story). I asked about tankless and he stated it wouldn't be worth it due to the work involved and how they would have to re-pipe everything in the attic, which just wasn't worth the cost. I thanked him and called another plumber for a quote.

2nd guy just left and he echoed what the first guy stated about looking to be original, so replacement was recommended as well. He actually explained why he believed them to be original and it was because they have an old school pilot light vs. electric spark that they have now. His quote was $3100 for replacement of both.

Both quoted Rheem with a 6-year warranty. The 2nd guy did mention that Lowe's and HD would be cheaper if I wanted to do it myself. I asked if there was a difference in what he'd install vs. what I would buy there, and he mentioned the equipment is different than what they'd get at a plumbing supply store due to them having a cost to hit, so they're built a bit differently. I asked what he meant by that, and he said the ones at HD/etc would use plastic in some places for cost savings where the ones they use have brass. Makes sense.

The 2nd guy quoted $5k for a tankless (Navien 11.2 gpm with 14 year warranty...IIRC). I asked if any re-piping needed to be done, and he said there would be a little, but not much. He stated they'd use the studs near where the current heaters are to build a makeshift wall, then do whatever pipe work needed to be done from the current pipes to it. He stated the gas line we have is sufficient size and electric is nearby. They'd also use the current exhaust for both as an intake and exhaust for the tankless.

Not sure if I should get another quote or not as all seem high to me. Both are local guys and not a large company like JM/etc.
Aggie71013
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I think one of the biggest costs to go tankless is a larger gas line as the normal household size is often too small.
aTm2004
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There is a 1" line running in the attic that looks to be feeding both furnaces and both hot water heaters. The lines from that main line to the hot water heaters are 1/2" currently.
Ezra Brooks
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Who did you decide to call?

My neighbor and I replaced mine about 3 weeks ago.

I got a 50 gallon Rheem with 8 year warranty at Moore Supply in Humble for ~$550.

My neighbor was the lead on the plumbing, but it's not a terrible job to tackle... hardest part is getting the old unit out of the attic and the new unit up there.
aTm2004
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Jared's and Gap.
Cowbird
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That price is a rip off.
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P.H. Dexippus
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Assuming its a condensing unit, you can use a PVC exhaust stack
https://www.navieninc.com/series/npe-a
Josepi
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My water heater is on the ground floor, but the first one I replaced, the guy did the entire job (including buying the heater) for $800.

The second one I did myself.
BrazosDog02
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I've always installed my own tankless and tank water heaters but they are all on the first floor. I'd like to personally punch in the neck whichever jerk decided at one point that the best place to stuff a leaky tank with 400lbs of water in it is in the gd ceiling. It's the dumbest place they could put it aside from inside the middle of your living room and makes an already difficult consumable item even more difficult to replace when it comes time.
EW2
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Hot water heater in the attic.... didn't know that was a thing. That sounds like an absolute nightmare to replace.
The Fife
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BrazosDog02 said:

I've always installed my own tankless and tank water heaters but they are all on the first floor. I'd like to personally punch in the neck whichever jerk decided at one point that the best place to stuff a leaky tank with 400lbs of water in it is in the gd ceiling. It's the dumbest place they could put it aside from inside the middle of your living room and makes an already difficult consumable item even more difficult to replace when it comes time.
What's even dumber is that they get installed before things like attic access hatches get put in. Bet you can't guess what I've noticed doesn't always fit through the hole afterwords...

$5K seems kind of plausible. FWIW my very large tankless cost about $1,200 for the unit itself, then another $1,800 for removal of the old one in the garage + capping off the gas and water lines, and running the plumbing and short gas line for the new one outside the house. I handled getting power to the location.

If I had two of those big *******s in the attic that needed to come out I could see the installation/removal portion of the job going up quite a bit.
aTm2004
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aggie2812-2 said:

That price is a rip off.
So, what would be a reasonable price to pay a plumber for 2 50 gal water heaters, removal of the old, and installation of the new in the attic of a 2 story house?
aTm2004
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BrazosDog02 said:

I've always installed my own tankless and tank water heaters but they are all on the first floor. I'd like to personally punch in the neck whichever jerk decided at one point that the best place to stuff a leaky tank with 400lbs of water in it is in the gd ceiling. It's the dumbest place they could put it aside from inside the middle of your living room and makes an already difficult consumable item even more difficult to replace when it comes time.
This is my thing. These things are at least 15 years old, and the 2 plumbers are probably right in they're original to the house, so who knows how much sediment is in them that won't come out. Also, where they are, it's close to the stairs to the attic, but there are braces all over the place and it's going to be a beetch to even get them to the attic stairs, not to mention where they are, you're not able to stand up all the way due to the pitch of the roof.

I'm normally one that will read on how to do something I'm not familiar with, watch some YouTube videos, and go at it. There have been a few times in the past where I was in the middle of it and said "paying someone probably would have been better," and I'm honestly thinking that's the best thing to do here due to where it's located, the possible weight of the existing tanks, and having to find a friend to come help.
aTm2004
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Mr. AGSPRT04 said:

Assuming its a condensing unit, you can use a PVC exhaust stack
https://www.navieninc.com/series/npe-a
Yeah, it's a condensing unit. The first guy said they'd have to rip out the current exhaust to make it work and the 2nd guy said it's a 3" exhaust there now and the intake/exhaust on the tankless is a 2" PVC, so they can use the current exhaust as a sleeve and run it through that. Not sure if that's correct or the right thing to do, but I'd think the 2" intake/exhaust is the most important, and as long as it's venting out, whether or not it's run in a sleeve shouldn't make a difference...kind of like gas lines being run in PVC.
maddiedou
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Did I miss a location
maddiedou
aTm2004
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Humble/Kingwood area.
The Fife
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After swapping either a 40 or 50 gallon in San Antonio that about that age IMO you're looking at a 3 person job. It was installed in a small closet where the only entrance was a vented exterior door and took two of us just to kick it out of its spot and onto the ground. It left a pretty good dent where it landed.

The new one going in was the same size and a whole lot easier to handle.
Ikanizer
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When I replaced the water heaters in a house I owned in Sugar Land I just moved the old ones off to the side after draining them. I guess they are still up there.
Macarthur
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Ikanizer said:

When I replaced the water heaters in a house I owned in Sugar Land I just moved the old ones off to the side after draining them. I guess they are still up there.
Kinda wondering this....If you went with a tankless, why couldn't you just drain the old ones, shut off the gas & water line coming into them and just leave them there?
Agzonfire
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This price doesn't sound crazy when you figure it's in the attic of a two story home. They're no doubt filled with sediment and will be beasts to get out. The price of the new units is only a fraction of the total cost. What's the plan if/when they damage the attic access or stair walls getting the old units out? I'd pay it, there's no way this is a weekend warrior type of job.
lotsofhp
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I may be wrong but it seems like some of you are missing the fact that it's 2 units being replaced from the attic. Pay the man, crack open a beer and watch some March madness
Jack Klompus
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I paid $1995 last month for a new 40 gallon installed in attic. Located in Cypress.
agracer
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how big is your house that you need TWO 50 G hot water heaters? I have 6 people in the house and only had a single 50 G and we never ran out of hot water.
JP76
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Location ?
Ted Logan
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After the freeze a couple weeks ago, I had a plumber out to fix a broken pipe and asked him about going tankless on my water heaters. One of them developed a small leak and they are nearly ten years old. He said that's about the life span of water heaters now and suggested I replaced them (or plan to, soon). The plumber himself said he would do tankless if I asked him to but that he didn't recommend it. The cost was too high, the annual maintenance was burdensome and expensive that it would take forever to make them pay off. And they still won't last forever and need to be replaced again.

I really wanted to go tankless when it came time to replace my water heaters but now I'm thinking otherwise.
lotsofhp
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Ted Logan said:

After the freeze a couple weeks ago, I had a plumber out to fix a broken pipe and asked him about going tankless on my water heaters. One of them developed a small leak and they are nearly ten years old. He said that's about the life span of water heaters now and suggested I replaced them (or plan to, soon). The plumber himself said he would do tankless if I asked him to but that he didn't recommend it. The cost was too high, the annual maintenance was burdensome and expensive that it would take forever to make them pay off. And they still won't last forever and need to be replaced again.

I really wanted to go tankless when it came time to replace my water heaters but now I'm thinking otherwise.


Man, this is starting to be a pretty common story with plumbers recommending sticking with a tank water heater
JP76
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lotsofhp said:

Ted Logan said:

After the freeze a couple weeks ago, I had a plumber out to fix a broken pipe and asked him about going tankless on my water heaters. One of them developed a small leak and they are nearly ten years old. He said that's about the life span of water heaters now and suggested I replaced them (or plan to, soon). The plumber himself said he would do tankless if I asked him to but that he didn't recommend it. The cost was too high, the annual maintenance was burdensome and expensive that it would take forever to make them pay off. And they still won't last forever and need to be replaced again.

I really wanted to go tankless when it came time to replace my water heaters but now I'm thinking otherwise.


Man, this is starting to be a pretty common story with plumbers recommending sticking with a tank water heater



It cost 3x to replace a tankless versus a tank.
People neglect the maintenance on them and a tank is more forgiving if maintenance is neglected
A 50 gallon heater with a tank booster goes a long way
Dill-Ag13
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When I replaced my water heater in January, the main thing that swung me towards an old-school tank was that I could still have plenty of hot water if the power went out That decision became the right one with the big freeze last month
sellthefarm
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Do gas tankless continue working in a power outage?
Milwaukees Best Light
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sellthefarm said:

Do gas tankless continue working in a power outage?
Pretty sure they use an electric spark ignitor and not an old school pilot, so no, they wouldn't work without power. Maybe some way to light it once with a long lighter, but that is not cool.
akaggie05
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Nah, they also have all kinds of complicated control electronics and monitoring. They are toast without power.
one MEEN Ag
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sellthefarm said:

Do gas tankless continue working in a power outage?
No, but you've got 50 gallons of hot water to ration through. Tankless your immediately running into cold water.

MrPlow2010
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I'm having a new hot water heater installed when I repipe my house in a few weeks. I wanted to go tankless but didnt want to spend that much on top of the repiping cost. My current hot water heater is like 12-15 years old.
12th Man Ag
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BrazosDog02 said:

I've always installed my own tankless and tank water heaters but they are all on the first floor. I'd like to personally punch in the neck whichever jerk decided at one point that the best place to stuff a leaky tank with 400lbs of water in it is in the gd ceiling. It's the dumbest place they could put it aside from inside the middle of your living room and makes an already difficult consumable item even more difficult to replace when it comes time.

Here is a pic of the water heater location in a new townhome we are building in College Station! I feel like this is the tree or whatever they put at the highest point on new buildings as they are building them. I hope I sell this place before it has to be replaced!
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