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  2. Tips for troubleshooting water heater issues - AOL

    www.aol.com/tips-troubleshooting-water-heater...

    Always turn off the gas and power before working on your heater. And if there’s a standing pool of water, shut off the gas and water supply to the heater and step away. Contact a licensed ...

  3. Here's How Often You Should Drain Your Water Heater ... - AOL

    www.aol.com/lifestyle/heres-often-drain-water...

    Step 1: Shut off the cold water supply on the top of the water heater. Step 2: Next, disconnect the power to the water heater or shut off the gas supply. The water inside the tank will be hot, so ...

  4. Condensing boiler - Wikipedia

    en.wikipedia.org/wiki/Condensing_boiler

    Condensing boilers are water heaters typically used for heating systems that are fueled by gas or oil. When operated in the correct circumstances, a heating system can achieve high efficiency (greater than 90% on the higher heating value ) by condensing water vapour found in the exhaust gases in a heat exchanger to preheat the circulating water.

  5. 13 reasons why your electric bill is so high—plus tips to ...

    www.aol.com/13-reasons-why-electric-bill...

    Check your water heater's thermostat dial and ensure it isn't too high. Lowering it to 120 degrees will save on power and offer all the hot water you need. In fact, going above 120-140 degrees can ...

  6. Boiler - Wikipedia

    en.wikipedia.org/wiki/Boiler

    Low-water cutoff: It is a mechanical means (usually a float switch) or an electrode with a safety switch that is used to turn off the burner or shut off fuel to the boiler to prevent it from running once the water goes below a certain point. If a boiler is "dry-fired" (burned without water in it) it can cause rupture or catastrophic failure.

  7. Boiler blowdown - Wikipedia

    en.wikipedia.org/wiki/Boiler_blowdown

    A steam boiler evaporates liquid water to form steam, or gaseous water, and requires frequent replenishment of boiler feedwater for the continuous production of steam required by most boiler applications. Water is a capable solvent, and will dissolve small amounts of solids from piping and containers including the boiler.

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