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2. Pilot light - Wikipedia

   en.wikipedia.org/wiki/Pilot_light

   A pilot light is a small gas flame, usually natural gas or liquefied petroleum gas, which serves as an ignition source for a more powerful gas burner. Originally a pilot light was kept permanently alight, but this wastes gas. Now it is more common to light a burner electrically, but gas pilot lights are still used when a high energy ignition ...

3. HVAC control system - Wikipedia

   en.wikipedia.org/wiki/HVAC_control_system

   The program features include time schedules, set points, controllers, logic, timers, trend logs, and alarms. The unit controllers typically have analog and digital inputs that allow measurement of the variable (temperature, humidity, or pressure) and analog and digital outputs for control of the transport medium (hot/cold water and/or steam ...

4. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   Under the pre-2015 standard, a 75 US gal (280 L; 62 imp gal) gas storage water heater with a nominal input of 22 kW (75,000 BTU/h) or less was able to have an energy factor as low as 53%, while under the 2015 standard, the minimum energy factor for a 75-US-gallon gas storage tank water heater is now 74%, which can only be achieved by using ...

5. Storage water heater - Wikipedia

   en.wikipedia.org/wiki/Storage_water_heater

   Solar heat is clean and renewable. This is the most modern system. Increasingly, solar powered water heaters are being used. Their solar thermal collectors are installed outside dwellings, typically on the roof or walls or nearby, and the potable hot water storage tank is typically a pre-existing or new conventional water heater, or a water heater specifically designed for solar thermal.

6. Gas lighting - Wikipedia

   en.wikipedia.org/wiki/Gas_lighting

   The use of gas lights in Rembrandt Peale's Museum in Baltimore in 1816 was a great success. Baltimore was the first American city with gas street lights; Peale's Gas Light Company of Baltimore on 7 February 1817 lit its first street lamp at Market and Lemon Streets (currently Baltimore and Holliday Streets).

7. Prepare for the coldest Arctic blast: How to keep your pipes ...

   www.aol.com/prepare-coldest-artic-blast-keep...

   Water expands when it freezes, Sperlich said, so people should drip indoor facets when temps dip below 32 degrees. Just make sure you drip the farthest faucet from your main valve. "You don't have ...