Tankless Water Heaters - Anyone have one of these?

[CL82]

My current water heater (40 Gal, tall) has been a work horse and still is chugging along, but after 30 years (yep 30) I figure it is time to replace it. I could just swap it out for a new 40 gallon, that would be easiest plumbing-wise, but I guess I should consider a tankless heater. I know very little about them. Does anyone have one? How is it? Is it possible to outrun the capacity (i.e., if volume gets high enough does performance drop)? What should I look for regarding specs? What you do different, if you were to buy one again? Have you seen any savings?

My utility is offering $250 off if I get one, so that makes them pretty affordable. I'd be using a gas one, does that makes a difference?

 

[CL82]

Soft water perhaps. I have an indirect fired tank. Have been through 6-7 of them, all with lifetime warranties. Hard water. Even with the water softener, they can't take it. Killed a dishwasher too.

My water is so hard it comes out of the faucet in cubes....

It's weird; I have no idea what is going on; but I'm not complaining.

 

[bfs3]

My current water heater (40 Gal, tall) has been a work horse and still is chugging along, but after 30 years (yep 30) I figure it is time to replace it. I could just swap it out for a new 40 gallon, that would be easiest plumbing-wise, but I guess I should consider a tankless heater. I know very little about them. Does anyone have one? How is it? Is it possible to outrun the capacity (i.e., if volume gets high enough does performance drop)? What should I look for regarding specs? What you do different, if you were to buy one again? Have you seen any savings?

My utility is offering $250 off if I get one, so that makes them pretty affordable. I'd be using a gas one, does that makes a difference?

I’ve sold both kinds for years. On demand water heaters are great, but most HVAC companies today charge $4200-$5500 to install a gas on demand water heater. If you know a cheap plumber then I’m sure it would be cheaper. Bosch is the best and will last the longest. Pure-Pro is a store brand Bosch and typically costs a few hundred dollars less.

 

[bfs3]

My house was 8 years old when i bought it back in 2014. Had to replace the tankless combo furnace/water heater 3 months after moving in. I can't remember the brand name but apparently everyone thought it was a good model when it first came out so they put them in all the houses in our development. Turns out it was junk and everyone has had to replace their's within 10 years. Was turned off by the combo idea at the time so went back to the traditional tank.

You’re probably talking about Navien. They were junk. Lots of plastic parts that should have been metal.

 

[bfs3]

I had to replace my hot water heater last year. I did not go with a tankless system, but I went with a Rheem hybrid high efficiency tank. It was on sale at Home Depot and I also received an instant $750 rebate from the State of Connecticut. There are three modes that you can use, including energy savings mode. I love it and have saved on my electric bill.

Heat Pump water heater? This is definitely the way to go if you have electric hot water. They can’t be installed in closets or small enclosed areas but they’re awesome for basements. They include a built in dehumidifier and they’re crazy efficient.

 

[Chief00]

I could do the plumbing, but I won't do the natural gas. So I will have someone install.

Smart not doing natural gas plumbing yourself.

 

[NJHusky]

but most HVAC companies today charge $4200-$5500 to install a gas on demand water heater.

Is that just the labor or does that include the unit? that still seems crazy even with the unit since that's probably $1200 or so??

 

[ZackB05]

You’re probably talking about Navien. They were junk. Lots of plastic parts that should have been metal.

Clearly a man who knows his HVAC equipment. That was the one. Complete junk!

 

[Hurleyman216]

I put in an Eco Smart 27 back in 2017 and it's been great. Does the whole house, runs on electricity and never had an issue with it. Less than $500

 

[Minicoop69]

Is that just the labor or does that include the unit? that still seems crazy even with the unit since that's probably $1200 or so??

Usually includes the unit, but could be higher depending upon how far has lines need to be run, water lines run, and how your venting will happen. I was quoted around 6k but that was minimum.

 

[EROCK CONN]

I see a lot of hvac systems in my line of work. The tankless ranai seem to have the best feedback. Weil mclain also good.

Also a good time to lol at the use of the term “hot water heater” ..... If buying a water heater —— that should suffice, hot water heaters have redundant features and cold water heaters seem to have a neutral impact on water temps.

 

[bfs3]

Is that just the labor or does that include the unit? that still seems crazy even with the unit since that's probably $1200 or so??

Includes unit. It’s not that different from installing a high efficiency wall hung boiler. Similar unit cost and operation. A good rule of thumb for residential HVAC by a company you’ve heard of without having to look too hard;

Equipment+ materials (usually $1000+) X 3 or 4. Cost for 2 licensed guys to a company ~ $2500/day.

Think about having two car mechanics come to you. Equipment/materials plus a mark up and a rate of $130-$150 per guy per hour.

If you know and trust a small time plumber and the project can be done by one plumber then that’s going to be your lowest price. That’s why I was wondering why the OP was so focused on small rebates and equipment cost. It should cost him at least 3 or 4 times more to put in an on demand instead of a tank.

 

[CL82]

I was wondering why the OP was so focused on small rebates and equipment cost. It should cost him at least 3 or 4 times more to put in an on demand instead of a tank

I was really just curious about how effective they were. If people hated them it would make no sense to price out the install.

 

[GG]

Heat Pump water heater? This is definitely the way to go if you have electric hot water. They can’t be installed in closets or small enclosed areas but they’re awesome for basements. They include a built in dehumidifier and they’re crazy efficient.

Yes, we actually did put it in a rather large basement closet, but we added vents to help with circulation. The one problem, especially in the winter, is that it generates very cold air into the rest of the basement. My son will not go in the basement to play his video games anymore in the winter.

 

[dvegas]

This Old House just did a triple decker in Dorchester and devoted pretty much an entire episode to tankless boilers hot water heaters. I know they can shill a bit for whichever company donates the supplies, but it was pretty informative and current

 

[Exit 4]

This Old House just did a triple decker in Dorchester and devoted pretty much an entire episode to tankless boilers hot water heaters. I know they can shill a bit for whichever company donates the supplies, but it was pretty informative and current

Did they shill for tankless - it’s the right choice

 

[dvegas]

Yes

 

[ctbbfn]

IiioIiiop

 

[CL82]

My current water heater (40 Gal, tall) has been a work horse and still is chugging along, but after 30 years (yep 30) I figure it is time to replace it. I could just swap it out for a new 40 gallon, that would be easiest plumbing-wise, but I guess I should consider a tankless heater. I know very little about them. Does anyone have one? How is it? Is it possible to outrun the capacity (i.e., if volume gets high enough does performance drop)? What should I look for regarding specs? What you do different, if you were to buy one again? Have you seen any savings?

My utility is offering $250 off if I get one, so that makes them pretty affordable. I'd be using a gas one, does that makes a difference?

I never got around to swapping out my water heater and last night I saw a little bit of pooled water around the hot water outlet connection. I’m having it replaced today with an A.O. Smith 40 gallon tall tank.

I had this tank installed in my house in April 1991. I’m not expecting the new one last quite as long.

RIP Kenmore Powermiser 8. You served us well.

 

[Sifaka]

For what it's worth….I trust the two techs-lady and a gent-who maintain my coil in boiler domestic hot water system. It's a Weil Mclain, and pretty efficient for its age. When the domestic hot water mixing valve died (third time in ten years ) they suggested that I go to a basement heat pump hot water system.

I happily defer to their knowledge, especially because Maine HVAC licenses do not allow them to install the unit. I need a plumber for that.

Heat Pump water heater? This is definitely the way to go if you have electric hot water. They can’t be installed in closets or small enclosed areas but they’re awesome for basements. They include a built in dehumidifier and they’re crazy efficient.

 

[temery]

My current water heater (40 Gal, tall) has been a work horse and still is chugging along, but after 30 years (yep 30) I figure it is time to replace it. I could just swap it out for a new 40 gallon, that would be easiest plumbing-wise, but I guess I should consider a tankless heater. I know very little about them. Does anyone have one? How is it? Is it possible to outrun the capacity (i.e., if volume gets high enough does performance drop)? What should I look for regarding specs? What you do different, if you were to buy one again? Have you seen any savings?

My utility is offering $250 off if I get one, so that makes them pretty affordable. I'd be using a gas one, does that makes a difference?

Get one with a dehumidifier built it.

 

[bfs3]

For what it's worth….I trust the two techs-lady and a gent-who maintain my coil in boiler domestic hot water system. It's a Weil Mclain, and pretty efficient for its age. When the domestic hot water mixing valve died (third time in ten years ) they suggested that I go to a basement heat pump hot water system.

I happily defer to their knowledge, especially because Maine HVAC licenses do not allow them to install the unit. I need a plumber for that.

With a tankless coil they can attach a 50 gallon electric as a sort of holding tank. It’s a much less expensive alternative if the heat pump is out of your budget. It greatly improves your hot water output as well.