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Water tank doesn't keep water hot overnight. First use in morning is warm but not hot as it is after first use.

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Most domestic water heaters have 2 thermostats. 1 at the bottom and 1 near the top. The covers are normally rectangular with 2 screws. Remove the covers and see if they are working by turning each one up and down and listening for the result. Is it gas or electric? If gas, there may be just 1 adjustment and it will be ON the gas valve. Turn it to a higher number. Please let me know how it works out.
Roger

Posted on Apr 02, 2011

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Posted on Jan 02, 2017

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Solar hot water not hot


Solar hot water giving you cold showers? Eight tips to warm you up.
Eight tips to get the most from solar hot water
We argue that policy needs to look beyond installation and that installation practices need improving, but what can you do to get an effective installation?
First, seek out independent advice from sources such as local sustainability events and organisations. They can help you understand what suits your circumstances and what characterises an effective installation.
A good organisation is theAlternative Technology Association. They provide free advice to members, sell a solar hot water guide, and organise open house events where you can see and discuss domestic sustainability technologies.
Second, consider whether solar hot water is the best option. It may be that a hot water heat pump or an instant gas system is a suitable choice, depending on where you live, how much cloud cover you have, or what sort of building you are in.
Third, make sure all your hot water pipes are insulated, especially the pipes that go to and from the tank and solar panels. You typically need insulation to be 15 mm thick. Without proper insulation you could lose half the energy you are trying to collect.
Fourth, get a booster switch installed in a convenient place inside, so you can easily turn the booster off if there is plenty of sun, or on if it's cloudy or you need more hot water.
Fifth, if you go solar, install a system that has a sufficiently large tank matched with a sufficiently large solar array for your needs. Water is very good at storing heat. A large tank could help you store solar energy for those rainy days.
Sixth, you may need to change electricity tariffs if your booster is electric, to ensure the sun gets a chance to heat the water before the electricity does.
Seventh, you may need to change your peak hot water use habits so that the tank water is at its coldest after morning use, after which the sun can then heat it during the day. The booster can "top up" overnight, ready for morning showers.
Eighth, before you install solar hot water, examine and discuss household expectations around hot water use. Will they need to change? Are members of your household prepared to make that change?
This may be the most profound change you can make, but also perhaps the most challenging.

Oct 30, 2016 | Water Water Heaters

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I went to take a shower this morning and the water was ice cold. For more than twenty minutes the water ran and never warmed up. Are there common things to check my hot water heater for in this situ


There is an adjustment knob to control how hot the water can become. There might be a problem at the tap (however, if this is the case, you would still get hot water everywhere in the house). If the entire house isn't getting hot water, and the knob is set at the hottest water, you probably need to get the hot water tank replaced.

Feb 04, 2015 | Rheem Tankless Hot Water Heater...

1 Answer

Whirlpool gas water heater NU40T61-403 No Hot Water


If you are saying the duct going into the chimney is hot, then that means the heater is making hot water, as the pilot alone wouldn't get it hot..... sounds like you have another problem otherwise...

Jan 10, 2014 | Water Heaters

1 Answer

Bosch aq 125


Check for crossover, aka cross connection
http://waterheatertimer.org/Crossover.html
Install ordinary tank electric water heater for $250 and solve problem quick, sure and cheap

Jun 06, 2013 | Water Heaters

1 Answer

Doesn't always come on with hot water is turned on


Water heaters draw water into the bottom, and as the hot water heats, it rises and hot water exits from the top.
You might want to check each fixture, does the hot pipe (tubing)feel warm when you run it for a moment. Can you get warm water from some of the fixtures, but not others?
I'm bet there is a leak at the top of the intake which is filling from the top down, instead of bottom up.

Dec 27, 2012 | Water Heaters

1 Answer

6 gal tank puts out only about 2 gal of very hot water. ADoes the same whether on gas or with electric hot rod.


Have you tried it with both (hot rod and Gas ) turned on at same time? Is tank well insulated? (looking from behind tank.)
Does temperature drop off quickly, or gradually? Did it supply hot water better before, or this is first time you really measured it out? Need to keep in mind that as hot goes out the top fitting to hot lines, cold is coming in the bottom fitting and beginning to mix with hot, which obvioulsy will cause hot to gradually become warm as it enters. 2 gallons out hot tap, 2 gals., at bottom of tank, then mixing as it flows in usually equals, about 2 gal or less of warm, then cold again. Get many complaints of only enough for a short shower when they have 6 gal tank. You can try adjusting temperature up a little to see if it helps. Keep an eye on pressure relief valve dripping excessively as well as shut pump off for 20min-30 min, then turn it back on before touching any taps, to see if it cycles at all, indicating a leak in the system. If pump doesn't cycle when turned back on, no leaks.

Jan 27, 2011 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

Hello we have Bradford hot water tank model #MI65R6DS13. Our problem, I keep having to press the tanks reset switch for us to get hot water. At the same time after I press the reset switch we have hot...


No the top thermostat is the first place I would start to replace. They run about 14.00 more than likely it isn't controling right. Turn power supply to water heater off and replace thermostat.

If you was getting scalding hot and then turning cold without tripping the thermostat it would be the top element working and the bottom one bad.
Bottom element good it will give you luke warm water for a while then gradually turn cold because it's heating the bottom of the tank.

Hope this will help you out.

Oct 09, 2010 | Fasco Bradford White Hot Water Heater...

1 Answer

Have a new electric tank,top element wont come on,replaced thermostat 3 times top element comes on once but next morning not enough hot water&top element wont come on,can someone help? thanks


The top element only comes on when the heater is about out of water. The water is directed to the bottom of the tank. Cold water stays on bottom, Bottom heater element heats water. If you use all that water then the top of the tank gets cold and the top element comes. When the top of the tank is warm, then the bottom element comes on. I would susupect the bottom element as it does most of the work. If you have an ohm meter, turn off electric, and remove wires from element. Check element for continuity. If you don't get reading, then that element is bad.

Oct 04, 2010 | General Electric Water Heaters

1 Answer

Warm water only


You can eliminate the shower control knob possibility by turning on your hot water anywhere else in the house. If you get hot water in other places, then it could be the knob causing it. A substantial lime buildup in the tank can also cause poor heat transfer from the elements to the water.

Sep 16, 2009 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

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