1. How do you vent a tankless gas water heater. I dont want to go through my ceiling if I dont have to my house is 2 to 3 stories. I would rather run it out of my basement window or wall like a dryer vent.
2. If I bought an electric one how many volts or watts would my panel need to be able to handle?
3. Where is a good place to study the tankless water heater with pictures and so forth of its mechanics?

I am referring to gas hot water heaters with tanks and not the tankless models.

I’m looking at several gas tankless water heaters and many of the manufactures are telling me that I should check if the fittings will first fit the new unit. Makes sense but I’m not sure how to check.

If I’m placing the tankless unit relatively near the same place where the storage tank tank is now, am I just looking at the current gas input pipe?

If I wanted to completely change where the unit is installed, does that mean that the pipes will have to be extended?

I fully intend to hire a pro to install the unit (if I decide to get one) but I don’t want to hire a pro just to help me pick out one. I hope this makes sense.

Thanks in advance…

it is leaking at the top, not a relief valve problem. We were told we have to contact Rheem and we are in Mexico. What can we do?

My gas water heater is broken, and I was looking at new ones when I saw the energy efficient ones. Could I replace the gas one with an electric one? The web page mentioned that they can replace the regular electric ones, but nothing was mentioned in the way of a gas heater. Any information you could give would be helpful, thank you.

I recently bought a home that has a tankless hot water heater. I noticed that when i cut the water the unit cuts on lights, goes out and then reattempts to light again. Then it shows reading that says that there in not enough gas going to unit (gas company game out and said I was getting enough to the house). It actually cuts on, lights and then cuts off (saw it through viewing area). Is it possible that it is not getting enough gas even though it lights up initally? Also on it a noticed that it has a flexible pipe that connects to main gas line and to water heater. Is it possible that it is restricting the flow of gas to keep a flame in the unit?
I know that it sounds weird, but I was really wondering if this could be the problem. Thanks in Advance.

Propane water heater Starts out Cold and after the first person takes the cold shower and maybe 10 min later the second person showering gets a hot shower. It is rare for this to happen but it does. I’m going to flush the tank tonight. I’m thinking it is an intermittent problem with the thermostat???

I'm seriously considering purchasing one of these soon and I see that both licensed plumbers and heating and cooling pros offer installation.

I wanted to know whom should I lean towards (even if it may cost more) and what type of questions should I ask in order to ensure I get a real pro?

i had propane gas water heater i made a mistake i bought natural gas heater what shoul i do now

Home depot sells these 18" flexible stainless hoses with threaded, teflon sealed ends. The stainless steel is like a fine braid on the outside, i don't know what is inside. What are these hoses called and are they approved in Ma. for hot water heater connections.? My hot water heater is a tankless gas fired model. I installed them and they are working fine but neither my plumber nor the inspector know if they meet code.

The gas tankless unit only heats water when used. High installation cost but big tax credits and rebates. Hybrid electric is easy to install and has some tax incentives of its own. Nice benefit of the hybrid electric is that it cools and dehumidifies the air in the spring and summer (not such a good thing for the winter months). I have soft water. My water heater will be in the basement. The ground water temps are fairly cold in the winter months.

I have a new trailer stationed out in the woods at a campground and am unsure how the water heater works. The water is hooked up and turned on via a handle outside the trailer. Then the water heater is then turned on via the circuit breaker in the trailer. So far I'm only getting cold water. I also have a propane tank outside - is this necessary to have turned on in order to heat the water? No clue...any ideas?

I need to replace my water heater and am considering a tankless model. My greatest concern is that they all require special all-stainless steel exhaust ventilation. Not only is this impractical for my installation environment, but it suggests that the appliance generates so much waste heat that it's not so energy efficient after all. Are there any natural gas tankless water heaters that can use an existing galvanized steel exhaust vent?

I'm considering switching from our 50 gal hot water heater to a tankless. For those of you who have done this, how much did it cost and are you seeing savings on your gas bill? At our current usage, a 50 gal tank takes care of one load of dishs, two loads of laundry and two showers (10-15 minutes long) before we start to loose hot water.

HI, I am wondering if the fuel and the cost are the same or similar (is the propane used for a home lpg hot water heater the same as used in the small white tanks we refill?) thanks jerry
thanks everyone. To propane man...the tank I refererred to came with the grill, it is an outdoor grill with little lava type rocks?you have heard of these? I did not have to change the connection at all it came set up.

I was unable to pay my pg&e bill and they shut off my gas. I'm not thinking of trying to use propane in place of natural gas for all of my gas appliances or anything. And I would only turn the propane on when I needed hot water for a shower or something and then I'd shut it off. It would only be occasionally if it is able to work.

I'm thinking of buying a tank-less hot water heater for my whole house but i've read that the natural gas heaters don't put out the flow that they advertise and it is best to go with an electric.I have a 40 gallon electric now that i bought 2 years ago.It is turned up all the way.I have never been able to take a 15 minute shower without using up all the hot water.I never had that problem with my old 40 gallon gas heater.Also my shower head plugs up with lime deposits so often that many times i cannot finish 1 shower without taking it apart and rinsing it out.The gas heater did that only 3 or 4 times a year.That makes me very reluctant to use another electric heater even a tank-less.I don't want a water softener.I am willing to put up with cleaning the shower head 3 or 4 times a year.If anyone is using a tank-less now i would like to know what brand it is,how strong it is and how happy they are with it.Thanks!
The first 4 answers seem very knowledgable but it does not sound like you are using one in your home.I need an answer from someone who is actually using one.Do you like it? What size and brand is yours? Can you take a long,hot shower? Gas or electric? What about lime deposits? Thanks!

We're on a well & the water is hard. We do have a softener. Any advice and knowledge would be appreciated. Thank you!

We have 2 bathrooms, a washing machine, a diswasher with 2 adult living in the house.

My propane tanks are full. The stove, oven and heater all work. When I try and light the water heater, the igniter does spark, there is flamage. but this last only about 2 to 3 seconds ( the igniter is sparking this entire time) then it shuts off. It will cycle like this for 3 times. Any ideas??

Can't afford gas bill.

Where can a turn on my water heater for a 1997 winnebago motor home model ithasca?

What is the typical cost of buying the equipment and installation of tankless 'Gas' water heater? For my house we need 2 of them.

My house is being constructed right now, so I asked my builder to put this instead of regular tank. They are charging 00 for each unit. I think this is too high and payback time will also be long. Am I right?

Also, any idea about cost of installing hot water circulation system to conserve water. Push of a button will bring the hot water within a minute to the faucet.

Thanks You!
Thanks Eric.

What will be the payback period if I'm replacing tank one with this Tankless Gas Hot water system? If I save a month, then it is more than 10yrs. Seems not worth it. What you guys think.

I have purchased a practically new liquid propane hot water heater for 0, and would like to further my savings by installing it myself. I am an intermediate do-it yourselfer, but wanted to get feedback from those with experience in installing them.

How important is it to use a surge protector with a gas tankless hot water heater (I have a Noritz if that matters)?
I'm talking about a surge protector for power surges, not water pressure. Also, I prefer to hear from people with specific knowledge about the issues with these types of units. I know that, in general, it's good to use surge protectors on electronics, but is there anything unique about using them with a tankless hot water heater? Thank you.

I have a fairly new natural gas hot water heater but where I'll be using it at has a propane bulk tank. A friend of mine said he heard that the burner has to be changed but we aren't sure about that at all.

to increase the gas pressure from 8" WC to 2PSI when converting from a gas hot water heater to gas tankless heater? Gas line is 1" entering the house, then 3/4" to each appliance. House is in Texas, 2 stories, 3200 SF, 3-1/2 baths (with a whirlpool tub), 2 furnaces, fireplace, dryer and tankless heater. If increased to 2PSI, gas pressure regulators will be needed at each appliance, as well as a 2PSI meter installed by the gas company. Sounds more expensive than necessary to this unknowing consumer. Comments are welcome.

As of right now I have a 40 gallon propane hot water heater without a timer. I was wondering how much money a tankless unit would save on the propane bill. How big are the units? My house has one bathroom, washing machine, and a kitchen faucet that would use the hot water. I live in Louisiana so the temp never really gets that cold. How big of a unit would I need and what kind of saving would I be looking at? What are the dimensions of the unit I would need?

If I turn on the hot water in my tankless water heater, it only puts out hot water. That's good because that's what it's supposed to do. However when I turn on the cold water faucet, the hot water goes off and I only get cold water. I can't understand how turning on the cold water can affect the hot water my tankless hot water heater (gas) is producing. Any info would be great!
How can I fix it?