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9

Check out the 1 or 2 gallon point of use heaters that install under the sink. They run on 120VAC and are fairly easy to install with minimal plumbing changes. There are also above sink mounted hot taps that mount into the sprayer hole in the sink. These are usually used for hot water for coffee/tea etc. Both of these type products are available at your local ...


8

The drip pan's drain tube may not be large enough to handle the flow if you drain the entire water heater through it, leading to an overflow of the drip pan. I would be safe and use a hose to connect the outlet to the drain.


6

How often does your heating system spring a leak? It's not particularly often in my (long) experience with closed-crcuit hot water heating systems - less than once per 20 years, I'd say, and usually with some outside cause. In general, it is a waste of money to remove/replace a system that's working. To address one of your "benefits" - where do you suppose ...


5

Water heaters have a dip tube on the cold water side that puts the cold water into the bottom of the tank. If water pressure is lost on the cold water side, the tank can siphon down through the cold water inlet till it reaches the bottom of the dip tube. Then since there's no water in the tank to absorb heat, the dip tube can melt and the tank can be ...


4

It sounds like you are describing two different problems. FIRST PROBLEM: Turning off a hot water heater. First, there are two ways to hook up two water heaters: series and parallel. SERIES In series, the water comes in to the first water heater, then passes through the second hot water heater, and finally goes to your fixtures. If you turn off the ...


4

The most likely reason is a degraded/broken dip tube in the hot water heater. If this were the case, there would likely be little bits of plastic in your water, which perhaps could be seen if you removed a faucet aerator. To replace the dip tube, the cold water inlet must be removed, and the new tube installed. One related cause is if the inlet and outlet ...


4

I'd suggest you use a watering can or pitcher to test where the drain tube goes before you crack the hot water heater drain. Pour a half-gallon to a couple of gallons down the tube and see if it shows up somewhere below. It probably should be more or less directly below in the basement, but it's always a good thing to check that it works before asking it to ...


4

You can buy an electric tea kettle. It looks like a coffee thermos but it has a cord. No modifications to the plumbing needed!


4

It's mostly the gas pipe. A tankless water heater is going to need a 1" or even 1.5" pipe to feed it. Your current water heater probably uses a 1/2" pipe. The new pipe probably needs to come off the main trunk, and replacing it requires a precise gas volume calculation and gas plumbing work that is very skilled labor and not cheap. If your plumber can't do ...


4

Yes, it's possible to bench solder, and in fact you should generally avoid soldering on an assembled threaded assembly. "Oven soldering" is a completely absurd approach to plumbing. Save it for your SMT electronics projects. If you are very uncomfortable about soldering, just use threaded pipe (steel, brass, stainless steel...) and threaded fittings.


3

There are one user failure and 2 equipment fails that usually contribute to non lighting water heaters" User Not pressing down the pilot button long enough. After lighting the pilot flame initially, you must hold down the pilot button long enough (30 seconds) to allow the thermocouple (a detector of heat, which sents its signal to the main gas valve) to ...


3

Only "power-vent" type gas water heaters can be vented with plastic pipe. These are gas water heaters with a fan on top which blows the flue gas (and cools it by mixing surrounding cool air with it, hence plastic vent is OK) out of the house. Most can be vented with 3" PVC (white), ABS (black), or CPVC (kinda tan colored). These vents can be run horizontally ...


3

It turns out it's nothing to do with the water heater. The sump pump's backup battery, which is pretty close to the water heater, exploded inside its container. That's what caused the smell.


3

Model the water heater as a continuously stirred tank reactor (CSTR), so it is always at a uniform temperature. Assume the recovery time is not dependent on temperature and completely accounts for insulation losses and the like. Neglect losses in pipes and assume the operator controls the shower temperature to 105°F perfectly. Taking the stopping criterion ...


3

Concentric PVC is a thing. I like concentric pipes because they only require a single penetration rather than two. Honestly, any of your options should be fine for a high-efficiency gas appliance and a three foot pipe run. The exhaust temperature of condensing, high-efficiency gas appliances is pretty low, which is why PVC is an option. PVC might be expected ...


3

Yes, it's good possibility that if you don't purposefully depressurize the lines first, you will get spray. But this is easy to do. Turn off the hot water heater. If it's electric, there is usually an off position on the knob on the front, or turn it off at the breaker panel. If it's gas, just turn the knob to pilot. Turn off the cold water supply to the ...


2

This answer is my opinion as a technician to the simple question: If my water heater is left on, and the water is shut off, will this damage the gas fired water heater if the hot water will not be used very much, or not at all? Considering you wont be using the water, and it will only be off for a short time there is no risk at all. You can also shut off ...


2

To be clear for future searchers: the nut is critical, it provides half of the electrical connection. A thermocouple requires two wires to function: electricity is generated at the junction of two different metals and two wires are needed for current to flow. While some thermocouples have two wires, the original poster is talking about a model with one ...


2

Before the use of pressure relief valves, homeowners were always urged to shut off the gas or electricity to a water heater which has the water cut off. The reasoning was simple: When the water heater came on to heat up its reservoir, it would cause the water to expand, and therefore pressurize, to the point where the tank or a pipe would rupture. As long ...


2

Time to call a professional; either a plumber or the local fire department. They can use more sophisticated leak detectors to pinpoint the leak, and know how to do so safely. Leaking gas is not something to trifle with. Liquid leak detectors (the type that bubble up when gasses are leaking) are great for simple threaded connections, but you've got a whole ...


2

You would gain... Sewer gas explosion. Never should sewer vents be exposed to any ignition source... In mines it's known as firedamp and it kills indiscriminately. All it takes is the proper ratio of flammable gas to oxygen and you have a fuel-air explosive. Sewer gas is vented to the atmosphere for several reasons: it displaces oxygen sulphide gasses ...


2

Installing a pan under a water heater is always a good idea. As a contractor, I have responded to many leaking tanks over the years and a drained pan would have made the situation a lot cheaper and easier for the customer. the leak is one thing, but the collateral damage is another. If you have clearance above the water heater, you could raise the level ...


2

You have used the wrong type of teflon tape - for gas the thicker yellow teflon tape should be used. Another option which many prefer is to use a pipe sealant like RectorSeal. If after replacing the white teflon the smell persists I would check the other end of the gas line. It's possible that when removing the old gas line an existing fitting was ...


2

If you eventually get hot water, it is more likely due to the flow rate of the sink vs. the flow rate of the shower. This determines how fast the cooled water sitting in the pipes is pushed out before the hot water from the heater reaches the faucet. In half inch pipe at a typical faucet flow rate of 1.5gpm, it will take 1 minute to clear roughly 18' of ...


2

Did you ask the maintenance guy what he did to "fix" it the first two times? This should give a pretty good clue as to what might have gone wrong. Seeing the picture we can see that this is a natural gas water heater. Is it possible that the pilot is going out? Pilot lights can be going out for a number of reasons: 1) The water tank is old and holes have ...


2

Such a variation is not normal unless you are using an abnormally high amount of water so that the water heater does not have enough time to recover. Otherwise, since the heater worked properly when first installed, I would recommend calling the installer.


2

Unless your hot water heater is positively vented (i.e. an exhaust blower), you need a draft hood in order to prevent back pressure in the vent line. If you connect directly to the hot water heater without a draft hood, you are risking having the pilot light blown out by pressure in the vent (think wind) or letting exhaust gases escape into your house. It's ...


2

Do a quick search online for the brand and model of the water heater. Most manuals for install are available online, but of course this will depend on the age of the unit. The manual (in most cases) describes the limitations of exhaust pipe distances and in particular the inclusion of elbows in the flue. It is important to check as elbows reduce the ease of ...


2

Many homes suffer from low pressure/flow issues for various reasons. This regular drop in pressure/flow seems to indicate an external problem, such as a large water user (commercial or industrial) using water from your water main line for some automated process. Also, check with your water distribution entity to see if they have changed the way they ...


2

15 years old, "heated the water nearly to the boiling point", and breaker tripping would tend to point to the bottom heating element in the tank becoming buried in sediment. Higher water temperatures accelerate sediment formation, and after all of the available surfaces become scaled with deposits, it is free to settle to the bottom of the tank. When it ...



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