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  2. 6 Home Depot Products Under $50 That Will Reduce Your ... - AOL

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    A water heater insulation blanket can make your water heater more efficient. ... 6 Home Depot Products Under $50 That Will Reduce Your Utility Bills This Winter. Show comments.

  3. Your Heating Costs Will Plummet This Winter With These 8 Home ...

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    Dr Infrared Heater Infrared Portable Space Heater Price: $100.99 Rather than turn on the heat to your entire home to warm up a room, using a portable space heater can save energy while still ...

  4. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    All new gas storage tank water heaters with capacities smaller than 55 US gal (210 L; 46 imp gal) sold in the United States in 2015 or later shall have an energy factor of at least 60% (for 50-US-gallon units, higher for smaller units), increased from the pre-2015 minimum standard of 58% energy factor for 50-US-gallon gas units.

  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. Liquefied petroleum gas - Wikipedia

    en.wikipedia.org/wiki/Liquefied_petroleum_gas

    LPG is composed mainly of propane and butane, while natural gas is composed of the lighter methane and ethane. LPG, vaporised and at atmospheric pressure, has a higher calorific value (46 MJ/m 3 equivalent to 12.8 kWh/m 3 ) than natural gas (methane) (38 MJ/m 3 equivalent to 10.6 kWh/m 3 ), which means that LPG cannot simply be substituted for ...

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