Is anyone out there happy with their tankless water heater?
fiddleddd
13 years ago
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camp9
9 years agolast modified: 9 years agoEdDunn
9 years agolast modified: 9 years agoRelated Discussions
service from BOTH old water heater and tankless water heater ?
Comments (4)We don't want to shut off the water when the remodel to the room is finished. We just want to switch the water source . For example after finishing the hall bath, can water coming from the water heater in the attic be switched via the remodel process to the new tankless water heater that will not be in the attic? But still will need the old water heater for rooms not yet remodeled and whose plumbing hasn't been upgraded to copper,etc. Can both water heaters be running at same time? For example keeping the master bath and the kitchen still using the water heater in the attic because plumbing will not be complete yet that routes them to tankless. So we will have both tankless not in the attic and the old water heater in the attic working at the same time but just servicing different rooms. Can we do that? I didn't specify since I'm not a plumber but I can't help thinking that main issue is that you need gas going to both water heaters and water from the outside being routed into both water heaters. Not sure if this is possible to do. Then after 6 months or a year when all rooms are remodeled and have their galvanized pipes replaced with copper, etc. and have plumbing routed to new location of tankless, the old water heater in the attic can be shut down because it won't be used....See MoreCombine Tankless Water Heater with Tank Water Heater?
Comments (9)The disadvantage of tankless is that you may not have enough hot water to supply multiple simultaneous uses (running 3 showers at a time, for example). So what I'm thinking is a tankless and a tank heater feeding into a mixing valve such as a Watts LFMMV. Set the tankless to deliver 110F and the tank to deliver 120F and set the mixing valve to supply 110F. Then under normal conditions the the mixing valve calls for "cold water" of 110F from the tankless but if the tankless can't keep up and falls below 110F then the mixing valve mixes in hot water from the tank to maintain the 110F. Would this work?...See MoreAnyone have experience with hybrid-tankless water heaters?
Comments (8)I recently installed a tankless water heater to get rid of a tank heater that was near its end of life and had issues with placement. The tankless water heater hangs on a wall and is easily accessible. I had some unique requirements. I wanted to be able to run as many things at one time as possible. I live in a ranch style home and with the tank heater, I never had hot water in my master bathroom sink. I did not expect a tankless water heater to change that. I had tried a recirculation system and it did not work because of the layout of my pipes. About 3yrs ago, I purchased point of use heaters for the bathroom sinks so I could have hot water. I had concerns about the tankless but really did not have anywhere to put a tanked system in my home. I bought a Rinnai RUR98i. It is rated at over 9gpm and has a built in recirculation unit. I have never thought I would love a water heater. I set the timer for the recirculation and always have hot water in my master bathroom sink. It takes about 5secs for the shower to get hot. I have been using the tankless water heater for about 1month now. I have not received my gas bill yet so don't really know how much I am saving. My home has three bathrooms and we have run two showers simultaneously with the dishwasher and washer running at the same time. I have not experienced a cold water sandwich as often referred to. I live in cold weather so I will have to see how the unit behaves once the incoming water temperature drops. I already have water saving appliances. My grohe and hangrohe shower heads are 2.5gpm max. My washer heats its own water as needed. I plan to replace my dishwasher soon and will connect the new one to cold water only. My current dishwasher is connected to hot water and does not really need it. The post is long winded but I wanted to let you know that Tankless heaters have come a long way since I started researching them five years ago. Noritz makes some units that go above 10gpm. Good luck with your search....See MoreAnyone installing tankless water heaters?
Comments (41)AnnKH, Your incoming water temp is 36F? I have an uninsulated crawl space where my plumbing comes through to the majority of the house and my incoming water temperature in the winter is never below 50F. I live in the Northeast and we get winters where the temp is consistently at 10 degrees with ice to boot. Rinnai and Noritz both originated in Japan where winters can be quite brutal too. I am not sure a tank or tankless in a 36F water temperature situation would be very efficient. When I first started researching tankless, I was really worried about temperature rise which is why I kept a log of incoming water temp for one year in my home. I also converted one of my showers to Thermostatic valves. We have the temp turned to 110 at the heater. I originally set it to 130 and it was so hot, it was unusable:-) At 50F, I am looking at a 70F temp rise and according to the Rinnai chart, I can get 5.5gals per minute. This is enough for two showers that are not using any cold water to temper the incoming water feed to run unfettered. My shower heads are 2GPM and 2.5GPM units. My faucets are now 2GPM including the kitchen faucet. I have a Rinnai RUR98i. Abick, Do you know your showerhead flow rates? Have you had someone come out and look at the performance of the water heater? You should be getting roughly 4gpm at a 70 degree rise. Good luck!...See Morejakethewonderdog
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