Using the water from a faucet furthest from the water heater, allow the hot water to run for a minute and then collect some in a cup. Step 3 The Home Depot offers traditional water heater tanks and modern tankless units, both powered by either gas or electricity. Shut off the main water supply as well and drain the lines by opening a faucet on the lowest floor. This can be metal or plastic, depending on the efficiency level of your hot water heater. Push insulation away from the thermostat or remove it. Amid the current public health and economic crises, when the world is shifting dramatically and we are all learning and adapting to changes in daily life, people need wikiHow more than ever. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. Gas hot water heater troubleshooting guide will assume that the gas unit was correctly sized, professionally installed, per codes and manufacturers' instructions. Turn off the water supply to the heater. Call a plumber if you often get cold water and have adjusted your water heater many times. Finally, re-cover the opening of the heater. If you need assistance on finding the breaker panel or the dial to a gas unit, please do not hesitate to contact us. If your water heater is wet or in a pool of water, do not touch it. There are 11 references cited in this article, which can be found at the bottom of the page. Turn on a hot water faucet and let the water run until there is no sputtering. If the pilot flame on your gas storage hot water system needs relighting, the instructions below show you how. Natural gas is flammable and, while you should not come in direct contact with the gas, safe is better than sorry. For units that don’t have temperatures listed, you can generally assume “warm” will be from 90°-110° and “hot” will be 140°-150°. A … Rheem Water Heaters are efficient appliances used to heat your household water. After 3 hours, test the temperature to see if it's hot enough. As water temperature increase, the pressure builds up. When it is turned off, the handle will be at a 90-degree angle to the pathway of the pipe itself; a handle parallel to the pipe indicates an open valve. After checking each of these, if you still can’t find the reason why you have no hot water, it might be time to call a professional. Move the new natural gas water heater to the installation site. Fill a glass and check the hot temperature. Water heaters do leak when they get old. Turn on the hot water and let it run until it runs cool. Check to see that the RV water heater tank is full. From there, you’re almost done. You should see a shut-off valve on the gas line somewhere near the heater. (Follow the manufacturer's recommendations). Turn off the water supply to the heater. Or maybe your dishes aren’t getting as sparkly clean as you’d like them to be. 1. Press down on the pilot knob and hold it down while lighting the pilot, either manually or by pressing your spark igniter. For old wall heaters, after turning the dial towards ‘Pilot’, hold down on the pilot gas button, instead of the ignite button. References. We use cookies to make wikiHow great. Open the closest water faucet and attach a hose to the tank drain valve. ; If you’re going to replace the water heater in your RV, keep in mind that not all systems are the same size. Whether it’s a new home or a new water heater, there shouldn’t be too much stress to turn it on. If you have a gas-powered unit, turn the control valve to the “pilot” setting. With the information in this article, you should be able to turn almost any water heater on without any complications. Use a cooking thermometer to check the temperature. My hot water heater is leaking. Read more: Top 5 Best Bathroom Heaters in 2020 – Buyer’s Guide and Review. Find this knob and turn it slightly before testing the tap water temperature. If you find that your water is too hot, you might need to turn down the temperature on your Rheem water heater. For electric tanks, be careful not to cover the thermostat, and for natural gas or oil hot water storage tanks, be careful not to cover the water heater's top, bottom, thermostat, or burner compartment. Depending on your selection, the average cost for water heater installation is between $1,000 to $3,000. 3 easy steps. These units ensure that water runs hot throughout your home, allowing you to bathe, wash dishes, and do laundry with ease. When you find it, turn the dial all the way to off. Please consider making a contribution to wikiHow today. 2. To check the venting on your existing unit, close all windows and doors and turn on all gas appliances and exhaust fans and turn up the temperature on your water heater for a few minutes. Store the insulation somewhere safe—it will need to go back in the water heater to keep the thermostat temperature accurate. In such a case, the first step in troubleshooting the nature of the problem is to turn off the gas feeding the hot water heater. To turn off the gas supply to the water heater: There are two basic types of water heaters: gas and electric. Before You Begin a Water Heater Flush. Light a match or prepare your lighter (for the manual water heaters only). The number of panels more has to do with the water heater's design, as both panels should open up to the same thermostat. Note: You must have the pilot lit and the burner on to test for leaks, so that gas is flowing through the large tube. If you consistently notice cooler water temperatures, you may need to turn up your water heater's temperature. Below you will see a few RV water heater problems most commonly reported for the various types of travel trailers and RVs. An electric water heater requires finding the circuit breaker and turning it on, while a gas water heater needs the pilot light to be lit. Find the access panel for the thermostat (s) and use a screwdriver to remove the panel. Make sure your gas water heater is venting properly. On-demand RV water heaters use a heat exchanger rather than a storage tank. For units that don’t have temperatures listed, you can generally assume “warm” will be from 90°-110° and “hot” will be 140°-150°.