tankless

This is for a new build, 800 s/f apartment, DW, Sink,Washer, tub/shower combination 30X60 tub, deep, and first floor is enclosed porch with DW and sink. In the apartment 2 people. My builder is suggesting tankless, I think because the plumber already put up the wall for it in the attic...

Hello all, Brand new to this forum and hoping for a little guidance. The set up: I have two tankless Rudds 199,000 btu plumbed in parallel (both inlets to one manifold and both outlets to another manifold). They have been working great for a few years without any issues at all. As of yesterday...

Hello, Is there a solution for Tankless water heaters that don't have an anode? I saw at one time seen a link to an installable electric anode and thought it might be a solution. I don't have rotten egg smell but my tank is being eaten alive. I have had to clear out faucets from large scale...

I have a question related to the radiant floor system I am installing. Context: The previous owner of our homes (two located on one property 60 feet from one another other) had ½ PEX oxygenated lines run throughout the entirety each structure. Both homes are Insulated concrete form...

Tankless water heaters are fairly new to us, and we're just starting to find out the funny little tricks they play on us. The favorite one is water turning cold while in the shower. That like never happens with a standard vented tank water heater. The tankless is different though. For starters...

Hi there, I have noticed some post that have provided me with good information but I thought I would make my own post to more specifically address my questions. I have an outdated electric tank water heater and I am considering switching to a super high efficiency (condensing) natural gas...

I have a Weil-McLain oil boiler, hot water baseboard, and the supply line froze (outside tank, overhead line). This happened last year too, so I had added heating oil additive to this year's tank, wrapped the pipe in heating wire and wrapped that in insulating tape. It still froze this year...

Hello I have a water heater from 1994 that is leaking. I live in Charlotte NC. I’m thinking about going tankless. My concern is that it would be in my crawl space. Fully enclosured crawl space. I have plenty of room all around the tank currently and I don’t really want to move it inside...

Hey everyone, We recently had our house remodeled and we went tankless. We had the plumber run a (copper) line back to the water heater for a recirculation system, but ultimately we stopped working with the plumber and never installed the recirculation pump. Currently, the line just terminates...

I apologize if this has been posted, I looked but did not see a similar situation. I am finishing a bonus room above an attached garage. No gas/ lp available, electric only. The tank water heater is approximately 80' away from the garage. In the bonus room there will be a bathroom shower...

Howdy y'all, Switched to tankless (marey brand - gas and runs on batteries) just shy of two years ago. Pressure was fine in whole house - worked great. Then it sprung a leak and I disconnected it to get it repaired. I left the inlet and outlet setting there in the attic - I did replace...

I am looking to switch over to a tankless water heater but want to learn more, real world info about transitioning from a 30 gal gas traditional to a tankless. I have researched some and know some about flow rate and temp rise desired from input temp to 115 deg f. My situation is that i...

Hey all, So let me describe my problem first and then I'll describe the specifics of my installation. The Problem: Over the past 2 weeks we have began experiencing the cold water sandwich for the first time since installation. It doesn't"t happen consistently, but when it does we often go from...

Before I start calling plumbers I want to know if this is possible and what I need to see if I'm choosing the correct installer. I want a radiant floor heat powered by a wood stove and tankless combiboiler when wood fire dies I want the tankless to pick up the demand. The tankless will be used...

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...

Navien CR-A 240 Tankless Hot Water Heater installed in 2010. Making an unusual clicking sound as heard in linked video. Has anyone heard anything like this? Sound appears to be coming from inlet flow adapter/flow adjustment valve/flow adjustment v/v pipe. Noise begins at 00:15 (sec) in video...

I recently had my 10 year old tankless water heater replaced with a similar model by a professional plumber. The plumber didn’t replace every part though. Actually, he used many of the previoius parts and I was wondering if it was acceptable. They did replace the 2 new vent adapters at the...

I'm in the market for a new hot water system for a large home (5000 sq ft). - 6 bathrooms, 4 full - spa jacuzzi - 2 dishwashers - 1 shower with two lines, 3 heads + 2 body wash - dual laundry rooms - total of 13 sinks in the house Water heaters are quite close to the gas source and exterior...

Thanks in advance guys for all of the great advice on this forum - it has been my go to source for plumbing advice for the past 5 years or better. OK, so I've seen many warnings to avoid tankless units with HE washers, but I'm not sure where else to find a solution: I have a small combo...

Does anyone know the logic behind how Navien controls their internal recirculation pump when it is circulating with an external loop? This would be with the second dip switch in the "On" position and the water valve in the "external loop" position. Here is what I want to do: Turn off the...