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  2. Is It Time for a Furnace Upgrade? 10 Warning Signs to ... - AOL

    www.aol.com/time-furnace-upgrade-10-warning...

    6. Continuously Cycles On and Off. Generally, a furnace activates when the thermostat detects that the home's temperature has dropped below the set point, running until it reaches the desired ...

  3. 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: A flame rectification device ...

  4. Oil burner - Wikipedia

    en.wikipedia.org/wiki/Oil_burner

    An oil burner is a part attached to an oil furnace, water heater, or boiler. [1] It provides the ignition of heating oil/biodiesel fuel used to heat either air or water via a heat exchanger . The fuel is atomized into a fine spray usually by forcing it under pressure through a nozzle which gives the resulting flame a specific flow rate, angle ...

  5. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    This limit controller may shut the furnace off if the blower fails or if something is blocking the air flow. The heated air is then sent back through the home through supply ducts. In larger commercial applications, central heating is provided through an air handler which incorporates similar components as a furnace but on a larger scale.

  6. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    The fourth category of furnace is the high-efficiency condensing gas furnace. High efficiency condensing gas furnaces typically achieve between 90% and 98% AFUE. [3] A condensing gas furnace includes a sealed combustion area, combustion draft inducer and a secondary heat exchanger. The primary gain in efficiency for a condensing gas furnace, as ...

  7. Mystery surrounds shooting death of beloved Altadena couple - AOL

    www.aol.com/news/mystery-surrounds-shooting...

    One week after an Altadena couple — married for more than 30 years and beloved in their neighborhood — was found slain in their home, friends and family held a candlelight vigil in their honor ...

  8. Steve Guttenberg Goes Unrecognized as He Comes to the Rescue ...

    www.aol.com/lifestyle/steve-guttenberg-goes...

    Steve Guttenberg hit the ground running to help people impacted by the fires in Pacific Palisades — and he was almost unrecognizable. The flames first began around 10:30 a.m. local time on ...

  9. Thermal cutoff - Wikipedia

    en.wikipedia.org/wiki/Thermal_cutoff

    Thermal switches are included in turn signals on older vehicles, some light fixtures, particularly with recessed lights, where excessive heat is most likely to occur. This may lead to "cycling" , where a light turns off and back on every few minutes. Flashing incandescent Christmas lights take advantage of this

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