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Hot Water Heater Tips

By
©1993-2012 Tim Carter

        
Summary: The hot water heater is one of the friendliest and most dependable home appliances. They are very simple mechanical devices when you think about it. My guess is that the average heater has less than five moving water heater parts. Fewer moving parts often translates into minimal breakdowns. In any event, most of us take these "comfort generators" for granted.

Performance Levels

Are you dissatisfied with the performance of your heater? Does it run out of water too soon? Does it take too long to heat up again? Did you know that the SAME gallon capacity heater can heat water at different rates? This is a well-kept secret many people are unaware of.

The burner at the base of the heater comes in different sizes. The bigger the burner, the faster it can heat water. Often the burner size is related to the warranty. I believe this is a decision the stocking distributor makes. In other words, here in Cincinnati, if you want the powerful large burner, you have to buy a heater with a 10 year warranty. It is worth it! Be sure to investigate this when you purchase your next water heater.

What is the Right Size?

Choosing the correct sized hot water heater depends upon the fuel source. Gas (natural or LP/propane) produces hot water faster than electricity. If your family has five or more people and you use lots of hot water, you should have a 75 gallon gas hot water heater. If you want the ultimate in performance and can afford it, get a commercial hot water heater. These have very large burners and can really heat water quickly. A family with three or four members can usually get by with a 50 gallon heater.

Remember, you can extract more hot water from your tank if you raise the temperature setting. Because you temper the hot water with cold water to make 'lukewarm' water, you will use less volume of hot water from your heater when you wash dishes and take a shower. This means that the 50 gallons of heated water will go a lot farther. DANGER! Be aware that doing this creates a burn hazard. If you raise the temperature too high in the heater (anything over 125 F) you can cause a child, an elderly friend or yourself to get burned!

If you use electric to heat your water, a high demand family of five or more will require a 120 gallon heater. The average family can get by with an 80 gallon tank.

Insulating Heater Tanks

You can purchase hot water heater covers to help insulate the tanks. Don't install one of these unless you are certain the manufacturer permits it. There is always the possibility that adding a kit like this could void the warranty.

Burping & Bubbling

Does your heater groan, bubble, burp, etc. as it heats water? If so, this is a sign of sediment buildup at the base of the tank. The sediment is expanding and popping as it heats. Sediment is bad because it creates a barrier for the burner heat to pass through on its way to the water. Drain one gallon of water from the heater each month.

Shut Off & Temperature/Pressure Valves

If you install a new heater on your own, DO NOT install a shut off valve on the hot water outlet water line. Only install a valve on the cold water side. If a valve is on both lines, and some idiot turns them off while the heater is on, AND the Temperature / Pressure valve fails......BOOM! It has happened before, I have seen a heater go from a basement through two floors and a roof and end up 150 feet away. NEVER re-use a Temperature / Pressure valve from your old water heater. Always buy a new one.



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Comments:

Welcome! I, Tim Carter, don't answer questions here. If you post a question here in the Comments Area, perhaps another visitor will help you. You need to go to the Ask Tim page if you want a question answered. Once there, look closely at how many weeks behind we are. Please be patient as you use this free service. If you have an emergency and need to talk to me, there is an option there for you.
Lloyd
23 Feb 2008, 13:56
Hi. I need to install a new gas water heater tank. The old one was installed on the basement floor on an angle - about a 10 degree slope. Is it all right to install tanks on a slope like this? I'm concerned that the gas burner may not be able to heat the water in the tank evenly, because the flames would tend to go straight up. I'm also wondering if sediment would gather in the lowest point of the sloped tank (the point farthest away from the burner flame). What do you think?
AsktheBuilder
01 Mar 2008, 08:23
Lloyd,
You need to install some steel shims under the legs of the new heater to get it level.
Valentin
10 Mar 2008, 07:29
Hi, I have an electric hot water tank with a 6-year warranty due to expire soon. My condo association send me a letter me that I need to replace the tank. What is the deal? Why I cannot continue to use that tank and if it needs repairs I could pay out of pocket or replace it at that time?
AsktheBuilder
13 Mar 2008, 06:12
Valentin,
Perhaps they are worried a leak will damage a condo below you. I think you should replace the anode rod and all will be fine. Go read all about that in some of my past water-heater columns.
howard
17 Apr 2008, 21:19
my electric hot water tank shuts down were is the reset button and what causes this. i also have a second water tank hooked up to it thats not working.
D Murphy
16 May 2008, 19:01
When i run the hot water anywhere in my house the water comes out brown, but only the hot water not the cold. I went to the drain on the tank and alot of black and brown came out of the tap. Does this meen that i need a new tank or that i just have to drain it?
Kate
26 May 2008, 13:43
I am buying a older home and fixing it up. There is a hot water heater in a fairly big closet. I want to move it and have the Laundry room there. Can I move it? how hard is it to move it to a completely different area?
R Bindschadler
11 Jun 2008, 07:21
The hot water from my 3-yr old water heater suddenly has become very hot. I've turned down the temperature setting on the heater, but it seems to make no difference. I understand the scalding danger at the tap, but is there a danger to the heater unit itself or to my house? What could be the cause of this change and the solution?
janet jones
29 Jun 2008, 18:09
what is the answer to moving the water heater?
Everett
03 Jul 2008, 08:08
I installed a new gas water heater and the condensation keeps tripping the safety by dripping on the burner so it only burns for about 1 minute. Is there a way to fix this so I can get out of hot water with the MRS.and in hot water in the tub?

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