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  2. 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 ...

  3. Energy Star - Wikipedia

    en.wikipedia.org/wiki/Energy_Star

    Energy Star qualified heat pumps, boilers, air conditioning systems, and furnaces are available. In addition, cooling and heating bills can be significantly lowered with air sealing and duct sealing. Air sealing reduces the outdoor air that penetrates a building, and duct sealing prevents attic or basement air from entering ducts and lessening ...

  4. Pulverized coal-fired boiler - Wikipedia

    en.wikipedia.org/wiki/Pulverized_coal-fired_boiler

    Coal is ground to the size of a fine grain, mixed with air and burned in the flue gas flow. Biomass and other materials can also be added to the mixture. Coal contains mineral matter which is converted to ash during combustion. The ash is removed as bottom ash and fly ash. The bottom ash is removed at the furnace bottom.

  5. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    Electric storage tank water heaters with capacities less than 55 US gallons sold in the United States shall have an energy factor of at least 95%, increased from the pre-2015 minimum standard of 90% for 50-US-gallon electric units.

  6. Condensing boiler - Wikipedia

    en.wikipedia.org/wiki/Condensing_boiler

    Condensing boilers are water heaters typically used for heating systems that are fueled by gas or oil. When operated in the correct circumstances, a heating system can achieve high efficiency (greater than 90% on the higher heating value) by condensing water vapour found in the exhaust gases in a heat exchanger to preheat the circulating water.

  7. Big Three (credit rating agencies) - Wikipedia

    en.wikipedia.org/wiki/Big_Three_(credit_rating...

    In 2023, the Indian government's Chief Economic Advisor, V Anantha Nageswaran questioned India's sovereign credit rating of BBB- by S&P and Baaa3 by Moodys and called for a review of the big three's rating methods. [14] In January 2024, CareEdge Ratings issued its Sovereign Ratings Framework for public consultation. [15]

  8. The Fed could be on the verge of ripping up its rate script ...

    www.aol.com/finance/fed-could-verge-ripping-rate...

    But traders reacted to the new readings by boosting their bets for a Fed cut this week even higher, pushing the odds above 95%. And some don’t expect the Fed’s 2025 predictions to budge either.

  9. European Union energy label - Wikipedia

    en.wikipedia.org/wiki/European_Union_energy_label

    Example EU energy label for a refrigerator. EU Directive 92/75/EC (1992) [1] established an energy consumption labelling scheme. The directive was implemented by several other directives [2] thus most white goods, light bulb packaging and cars must have an EU Energy Label clearly displayed when offered for sale or rent.