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Tankless Water Heater Article

icesailoricesailor Member Posts: 7,265

Comments

  • SWEISWEI Member Posts: 7,356
    Not much depth, but thankfully lacking in flat out bad information.

    Almost every tankless problem we see reported by owners can be attributed to one of two things: Improper application or improper installation. Promises of performance made by salesmen/installers are the #1 issue by far.
  • RobGRobG Member Posts: 1,850
    SWEI said:

    Not much depth, but thankfully lacking in flat out bad information.

    Almost every tankless problem we see reported by owners can be attributed to one of two things: Improper application or improper installation. Promises of performance made by salesmen/installers are the #1 issue by far.

    And reps (I guess they qualify as salespeople though). I had a rep try to tell me that if I turned the temp up on the unit and used a mixing valve I would get more volume from the unit.
  • BobCBobC Member Posts: 4,507
    I looked into the tankless WH when my 40gal gas tank was at 10 years, the cost vs benefit was just too high. I figured if your hot water usage is modest the tank heaters would do the job at a reasonable price; if you used a lot of hot water an indirect would be the way to go.

    My tank sprang a leak a couple of years later, I installed another 40 gallon gas hot water tank. My luck being what it is that was after the state mandated explosion proof water heaters and that pushed the cost of the tank up several hundred dollars. Thanks to that law a lot of folks have an explosion proof tank a few feet away from a gas atmospheric furnace or boiler.

    Fat lot of good that law did.

    Bob
    Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
    Vaporstat with a 12oz cut-out and 4oz cut-in
    3PSI gauge
  • icesailoricesailor Member Posts: 7,265
    They had to do that. Too many homeowners storing flammable fluids around water heaters. Or installing them in garages and not keeping the bottom of the water heaters above 18" from the ground.

    The stupidity and greed of some, cost the rest of us a lot of money.
  • BobCBobC Member Posts: 4,507
    I understand the intent of the law but as long as atmospheric heating equipment can be in the same environment will the combustible vapors really care?

    Will the be requiring explosion proof heating equipment soon?

    Bob
    Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
    Vaporstat with a 12oz cut-out and 4oz cut-in
    3PSI gauge
  • LarryLarry Member Posts: 181
    I have a takagi tk3 for 8 years now and only ran descaler three times didn,t even need to. Never gave problem once and my old 40 gallon tank heater real estate has been replaced by the the takagi and my 80 gallon air compressor. Love the thing, " knock on wood"

    Initially it dropped my actual gas consumption by a third, then my family got bigger. The biggest complaint should be its requirement for electric supply, losing power and hot water is a real short coming.
  • SnowmeltSnowmelt Member Posts: 752
    Lol Larry Yeaaaaaaaaa that's one of the downfalls, you must have decent water, as far as I'm concerned that's the only thing that really messes them up after the initial install is passable

    The other story I have with them is that if the gas regulater or meter or just say there is a break in the street. The tankless will feel the after affects by losing temperature. I seen this roughly a 1/2 dozen times. The gas company comes over and has to dig and replaces the gas line from street to house.
  • JackJack Member Posts: 946
    Tankless are great...when properly sold & installed. I ran one in my MA home for 12 years and never touched...except when the town flushed the hydrants. When I put the house on the market I installed a new one, took the 12 yr old out and cut it in half with a sawz-all. Clean as a whistle.

    The other thing I always recommend is that yes, do bid the job where the existing water heater is, but do go for a walk and look to see if there is another spot for the tankless that is better. Quite that location and tell the customer why it is better. In home sales is about building a relationship. In part that means having the customer understand that you have their best interests at heart. In other words, don't perpetuate and exaccerbated the mistakes of the original low cost bidder.

  • njtommynjtommy Member Posts: 1,072
    edited April 2015
    RobG said:

    SWEI said:

    Not much depth, but thankfully lacking in flat out bad information.

    Almost every tankless problem we see reported by owners can be attributed to one of two things: Improper application or improper installation. Promises of performance made by salesmen/installers are the #1 issue by far.

    And reps (I guess they qualify as salespeople though). I had a rep try to tell me that if I turned the temp up on the unit and used a mixing valve I would get more volume from the unit.
    That Rep would be correct if and only if your storing hot water. If you store you hot water at a higher temp IE 150-160 degrees and mix it down to 115-120 it gives you a larger tank capacity. It would take your 40 gallon tank and turn it in to a 60 gallon. I do this on all indirect tank installs.
  • njtommynjtommy Member Posts: 1,072
    I installed a Navien Tankless hot water heater for a buddy of mine who uses propane. After a Year of running we figured out he was saving roughly 15 gallons of propane a month at a cost of $3.00 per gallon it adds up quick for the savings. When Propane spikes to $4.00 per gallon again he will be saving more money.
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