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2. Furnace (central heating) - Wikipedia

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

   In some areas electrical resistance heating is used, especially where the cost of electricity is low or the primary purpose is for air conditioning. Modern high-efficiency furnaces can be up to 98% efficient and operate without a chimney, with a typical gas furnace being about 80% efficient. [ 1 ]

3. Annual fuel utilization efficiency - Wikipedia

   en.wikipedia.org/wiki/Annual_fuel_utilization...

   The annual fuel utilization efficiency (AFUE; pronounced 'A'-'Few' or 'A'-'F'-'U'-'E') is a thermal efficiency measure of space-heating furnaces and boilers.The AFUE differs from the true 'thermal efficiency' in that it is not a steady-state, peak measure of conversion efficiency, but instead attempts to represent the actual, season-long, average efficiency of that piece of equipment ...

4. 3 Top Oil Stocks to Buy Before 2024 Is Over - AOL

   www.aol.com/3-top-oil-stocks-buy-150000000.html

   Oil prices bounced around quite a bit in 2024. They rallied more than 20% at one point -- topping $85 per barrel -- before cooling off toward the end of the year. Oil was recently below $70 a ...

5. Natural gas prices - Wikipedia

   en.wikipedia.org/wiki/Natural_gas_prices

   Price per million BTU of oil and natural gas in the US, 1998-2015 Natural gas prices , as with other commodity prices, are mainly driven by supply and demand fundamentals. However, natural gas prices may also be linked to the price of crude oil and petroleum products, especially in continental Europe.

6. Oil prices are rising despite a rough start to 2024 — here's ...

   www.aol.com/finance/oil-prices-rising-despite...

   Oil's bumpy start in 2024 has turned into a steady climb in recent weeks, with futures for West Texas Intermediate and Brent up more than 9% and 7% year to date, respectively.. On Friday, WTI ...

7. Heating oil - Wikipedia

   en.wikipedia.org/wiki/Heating_oil

   #2 Heating oil price, 1986–2022 Kerosene inventory stock levels (United States), 1993–2022. Heating oil is known in the United States as No. 2 heating oil. In the U.S., it must conform to ASTM standard D396. Diesel and kerosene, while often confused as being similar or identical, must each conform to their respective ASTM standards. [3]