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  1. F

    Tankless Water Heater Valve Kit/Plumbing Help (Texas)

    Another one of the millions affected by the freeze down here in Texas. Have not been able to get a plumber out and cannot get moved back into our house until we get this issue repaired. We drained all the water lines before the freeze so we were fortunate to avoid any broken pipes. However, we...
  2. B

    Tankless Issue (Texas) - HELP

    I'm among the millions of folks impacted by the "big chill" in Texas and could use some help. I have a tankless Navien 240. One of the fittings broke during the freeze, it's leaking water and is the reason I'm getting error code E438 (I believe) and, more importantly, the reason we haven't had...
  3. T

    Tankless Heater Failure

    Hello! New here, not sure if this is the right place to post. We just moved into a home with an older tankless water heater made by a brand that doesn't exist anymore. A few days back it stopped working and starting giving an error message of 11, with an occasional 12 thrown in. The company...
  4. GWolfe

    Instant hot water issues

    Hey everyone this is my first post, and I usually don’t resort to forums to ask for help but I just can not figure out my issue. I have a Bosch AQ 125 - BNG tankless water heater. Which works great. Except for when we try to take showers. I have read about the “cold water sandwhich” but that...
  5. P

    Tankless Hot Water Heaters

    Tankless Hot Water Heater: A lot of development of this product since it came out in the US market. Any general thoughts about tankless vs gas fired hot water heater? Do you think the cost is worth it? Maintenance issues/concerns? Other thoughts? Thank you.
  6. S

    tankless flush turned bad...help!

    Flushed ecosmart27 to descale it. After 30 min the vinegar was blue (normal, I should've stopped here). After 90 min the solution was clearer but the bucket was covered in grimy, grey, greasy coating (see pic). Dry, it's grey soot that smells metallic. Any ideas to clean this stuff out of...
  7. S

    Troubleshooting odd situation

    Hoping someone can help troubleshoot an odd situation that I haven't been able to answer via many Google searches! The hot water in our primary kitchen sink has begun working inconsistently. It may provide hot water immediately and then get cold and take many many minutes to get hot again. Or...
  8. R

    tankless water heater flow sensor

    could a bad flow sensor cause the unit to make a banging noise when the water is turned off at the sink?
  9. R

    Tankless electric water heater makes noise

    I bought a home and the hot water tank was rusted out so I decided to install a tankless water heater. I installed it and it works but after about 3 months i started to hear a loud banging noise when the water was in use. I researched it and most people said it was jackhammering, i think that...
  10. M

    Tankless Water Heater Replacement

    Hello, our Eemax EX280T2T water heater recently sprang a leak. We're hoping to replace it but the reviews for the same unit are not that great and we'd like a solid, reliable replacement, but we'd also prefer to do minimal rewiring and plumbing work. Obviously we already have the three circuit...
  11. D

    Tankless Rinnai That's Never Been Flushed

    Hi All, I'm buying a home built in 2013 that uses a tankless Rinnai water heater. I know the current owner's never flushed or serviced the unit, and I'm trying to decide the best course of action. 1) The seller can hire a plumber - probably the cheapest they can find - to service the unit...
  12. Hamberg

    Tying tankless to tank version

    (short lead in... had an addition build a couple years back and a Rheem ECO200 9.5 GPM tankless unit installed - addition is 1 bth, kitchen and laundry - with the anticipation of tying it into the main section at some point) Question: what is the best practice to do so? Would it be best to run...
  13. T

    Hard water + chloramine with tankless water heater

    I need a new water heater and I'm considering a tankless (on-demand) due to the long term cost/energy savings and space savings. A local plumber has recommended against it due to the water in town. I think he said the water has chloramine which causes problems with the tankless system. It's also...
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