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2. Pilot light - Wikipedia

   en.wikipedia.org/wiki/Pilot_light

   In natural gas furnaces, water heaters, and room heating systems, a safety cut-off switch is normally included so that the gas supply to the pilot and heating system is shut off by an electrically operated valve if the pilot light goes out. This cut-off switch usually detects the pilot light in one of several ways:

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

   www.aol.com/heres-often-drain-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 you’ll want to wait for the tank to cool completely, typically just a ...

4. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   Gas tankless water heaters shall have an energy factor of 82% or greater under the 2015 standards, which corresponds to the pre-2015 Energy Star standard. In 2022 the Department of Energy proposed rules that would take effect in 2026 and would effectively eliminate inefficient non-condensing gas water heaters in commercial buildings.

5. New Biden water heater ban will drive up energy prices for ...

   www.aol.com/biden-water-heater-ban-drive...

   A Biden administration ban on certain natural gas water heaters as part of the lame duck president’s ... a Rinnai America tankless non-condensing natural gas water heater goes for roughly $1,000 ...

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. 12 Most Expensive Home Repairs (and How to Prevent Them) - AOL

   www.aol.com/12-most-expensive-home-repairs...

   There’s nothing worse than turning on the shower to discover there’s only cold water coming out. That means you might need a new water heater. Unfortunately, it’ll cost you. A new water ...