Tag: hot water heater

January 31, 2023 – When the Hot Water Doesn’t Flow

January 31, 2023 /

OK, so I underestimated the hassle factor on this. I thought I was going to get off cheap and easy with $30 in parts and an hour of time. First problem, I couldn’t find the breaker. After a bunch of running up and down the stairs, I found out that my breaker panel is actually mislabeled on which breaker actually runs to the water heater.

I figured it was probably a 30 amp breaker, because it was 10 gauge wire coming in to the water heater. The panel was labelled a 20 amp breaker. Now, some years ago, we had some arcing in the panel and we paid an electrician who removed the top level breakers and shoved everything down in the panel. At that time, almost nothing was labeled so I never bothered.

I only label breakers as I find them. Worse case scenario, I can turn everything off with the main on the panel. But, as much a I have dinked around the house, I have never had opportunity to look at every circuit.

After testing to verify the power was finally off, it was time to drain the tank. Hook the hose up and run it to the sump. Open the valve and nothing. Come to find out that the drain valve on the tank is plugged up with mineral build up. So, now I have new problems. How to get the water out of the tank without burning myself or dumping 50 gallons of water all over the floor.

By the time I figured out how to approach this problem, I ran out of time to do what I needed to do. Plus, I needed time to obtain the parts so I spent another $30 on brass tube fittings to build something that could blow air back into the system and clear the drain. That took a couple of hours, but it worked. Finally, after three different attempts, I was able to drain the water heater.

In 2020, when I spent my entire summer remodeling the apartment, I did some water heater work there. I have known since we moved into the house in 2005 that there were a few low risk items that needed to be addressed. One of which was no catchment pan under the water heater. So I bought one. How ever, I wasn’t able to drain the water then either. So, I left it for another time. This was going to be the time.

First, I wanted to get the elements out so I could see how bad the inside of the tank was. Feeling good that I conquered the draining, soon changed to I didn’t have a socket to remove the element. It required a 1 1/2″ socket. So, another trip to the store. I also needed PVC for the drain line, although that was really optional for the initial job. Another $30 for those parts.

I removed the top element an there wasn’t much to see. These tanks are glass lined, so they are pretty impervious on the inside. But when it came to the bottom element, it was heavily corroded and my new $6 element socket quickly met it’s match. It tried penetrating oil, heat and hammering none of them worked. I needed to find a real socket, not the stamped sheet metal one for the most leverage possible.

These are tractor sized dimensions, to the tractor store for tools. Now, add another $40. I also didn’t check my PVC glue before the last trip which was also dried out. I had to get that too. But, finally, I got the bottom element out. All in all, it looked better than I was expecting. That being said, there was definitely some buildup on the elements.

Once drained, I wanted to flush the tank. Ideally, to do that I would get the pan underneath the tank so I could flush without sending water all over the floor. Fortunately, my son is strong enough that he can bear hug the tank while I slid the pan underneath it. I was able to complete the PVC work but ran out of time to actually flush the tank.

End Your Programming Routine: It is nice to have hot water again. I guess the degradation is so slow that you don’t realize what it used to be like. Hot water is continuous throughout my shower and the dishes again. After doing this job, I am convinced that this is a one hour job with the right knowledge and tools. That being said, I overpaid with time and materials. I don’t regret doing it myself because now I know but it wasn’t as cheap or as easy as had planned.

January 18, 2023 – How Hot is Hot Enough?

January 18, 2023 /

Recently, I noticed a problem. It seemed like the first five minutes of the shower was hot and then it went lukewarm. I didn’t think that I was imagining things so I started to ask some questions. Did my wife take a shower before me? Are the kids here? And the answer was no. Hmm, seems like we might have a problem with the hot water heater.

I looked at the date on the water heater, it was dated 1994. So, that is 29 years old folks. The common stated lifecycle is 10-15 years. That means that when we bought the house, we were at the end of the expected duration. But, that is crazy, as long as the tank is not leaking (meaning rusted throughout), then there should be some serviceable parts and some way to check it.

Electric water heaters have two elements at top and a bottom. I surmised that there was a problem with the bottom element because there was some hot water. A quick aside on how water heaters work. Because of the temperature gradient, hot water is on top and cooler water is on the bottom. As you draw from the tank, hot water comes off the top while cooler water is added to the bottom. This actually pushes the hot water out. Time to test things out.

First, take the covers off of the tank. This exposes the elements and thermostats (one per element). Then, with a multi-meter set to resistance (that is the ohm’s symbol omega, sorry I cant add special characters) put the lead on each wire terminal and measure. The expected result depends on your particular element but I was expecting around12 and 13 ohms. From the picture, you can see that the top element measured 13.4 and the bottom measured 0.7 ohms.

If you remember you basic physics and circuits, 1 ohm is a broken circuit. What is likely happened that the element is all gunked up with mineral build-up. But, the element could be burned out and the circuit is completed with the mineral build up, at least that is my speculation.

Had I gotten two good resistance measurements of the top and bottom elements, I might have turned my attention to the thermostat. In theory, those could be tested too, but it is more complicated and I didn’t do it so I am not going to talk any further about it. I am going to attempt to replace the elements.

I say attempt because I hope that I can get the bottom element out. There is a lot of corrosion around the element and who knows what the inside is looking like. I will probably look at the top element and will make a decision as I get there. The replacement I ordered comes with two elements and is billed as a ‘tune-up’.

End Your Programming Routine: If you are interested, stay tuned to follow up on this project. What I am trying to get across today is that things like this are not out of reach of the average homeowner. A little knowledge of how a hot water heater works and what is possible can lead to saving a lot of money. I don’t know this for a fact, but my guess is that a plumber would replace the whole thing because after all, it is three times older than it’s expected life.