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tankless water heater

  1. Plumbing
    Hi, First time user here ... I have a bathroom far away from my ordinary hot water tank. Consequently, it takes a long time to get hot water to that bath. I'm thinking of installing a small(ish) electric tankless water heater near that bath and running the "tanked" hot water into it so the...
  2. HVAC
    We recently moved into a new home that currently has a Super Hot MG-100 Hydronic Boiler (installed in 1986, when the house was built). Clearly, the boiler is way past its life expectancy and in need of replacement. We had a couple of boiler companies come give us a quote and one of them...
  3. Plumbing
    Hi Everyone, I have been thinking ahead about replacing my Navien CR-A 240, which has been running relatively well for the past 8 years. I assume that at a certain point, the repair bills will make this a reality. My unit has the two vents at the top, water into/out of the bottom and gas on the...
  4. Plumbing
    I have a gas tanked water heater in an upstairs closet venting upward out through the roof. I'm considering replacing it with a Gas Tankless system. Years back I was told that venting for my existing water heater would need to be replaced with heavier gauge pipes if I were to go tankless. Was...
  5. Plumbing
    Rinnai (R94LS) I have two faucets that are separate handles for hot and cold. Both of those draw hot water. But in the last two months my shower and kitchen sink faucet (which are single handle faucet mixer values do not draw hot water all the time. However, if I start the hot water off the hot...
  6. Plumbing
    Any input out there on good electric tankless water heaters? I am looking for options for a 400 sq ft apartment over a detached garage, so I just need enough flow for a 3/4 bath, kitchen sink and laundry. I am leaning toward tankless as the apartment will not be occupied full time.
  7. Plumbing
    I am in escrow to buy a newly remodeled home. Its a long skinny home, not a box. Think a box of aluminum foil in your kitchen cabinet. I estimate it's about 100' long. There are two Rheem 199,900 BTU hot water heaters on opposite sides of the house--about 100' apart. It takes forever to...
  8. Electrical
    My (4,500 watt) water heater burst. So instead of simply replacing it like-for-like, I decided to upgrade to an electrical tankless (11,800 watt) water heater. It's much smaller and should give me great savings. Best yet, I won't run out of hot water if I'm not the first in the shower! So...
  9. Plumbing
    I live in New York state and had a Rinnai RU80i tankless water heater installed in the basement of my house. I am doing the plumbing for the cold and hot water pipes and wanted to get some feedback on if I designed the system correctly (a diagram is attached--larger PDF too). There are fixtures...
  10. Electrical
    I have a tankless electric water heater running on two 30-amp 240 volt circuits. I want to add a 4-pole disconnect switch near the heater but I can't figure out if I need a disconnect rated at 120V (because 120V is passing through each pole of the switch) or 480V (because 480V is the total...
  11. Electrical
    Our neighborhoods builder was thinking ahead and wired all the houses for 400 amp service. We have 2 200amp panels. I'm now looking at replacing the water heater and going tankless. The model I'm looking at requires 3 50amp circuits. It leads me to a question I haven't seen asked before...
  12. HVAC
    Hi, I have a Baxi Luna 24fi that's probably 12 years old. Was serviced about 4 months ago and was fine. The heat works fine, but I'm having problems with the DHW (no hot water). I noticed if I turn on the washer set on hot, the unit ignites and works. If I then turn in the bathroom tap and...
  13. HVAC
    Hey There... I have 5 Seahorse brand "water heaters" (though they are used in a radiator system) made by Gas-Fired Products, Inc. They are governed by electronic control. The company doesn't appear to make them any more. I need to replace them and wondered who makes a similar system of...
  14. Plumbing
    I'm in the process of having an AO Smith NEXT Hybrid Water Heater installed. Due to space limitations in my Charlotte, NC home, it's being installed in the attic. I'm concerned about the winter storms we have every few years that knock the power out for several days. Does anyone have any...
  15. Plumbing
    I have a long run from my hot water heater to the kitchen sink. Often need to run the water for 2 -3 minutes before I actually getting any hot water. I'd like an easy to install 120V electric unit that provides like a booster of hot water until regular water from the tank can hit. But also don't...
  16. Plumbing
    I have just moved into a brand new house. It's a 3 storey house with the bottom storey being a kinda basement (even though this bottom storey is above ground) with the other 2 storeys being the regular 2 of a traditional 2 storey house. The house has a tankless water heater that is located in...
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