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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. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   A drawback is the installation cost, which can be slightly higher than traditional HVAC systems. Energy efficiency can be improved even more in central heating systems by introducing zoned heating. This allows a more granular application of heat, similar to non-central heating systems. Zones are controlled by multiple thermostats.

4. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   The primary energy source is selected on the basis of cost, convenience, efficiency and reliability. The energy cost of heating is one of the main costs of operating a building in a cold climate. Some central heating plants can switch fuels for reasons of economy and convenience; for example, a home owner may install a wood-fired furnace with ...

5. 8 Most Effective Ways To Use Your 2024 Tax Refund To ... - AOL

   www.aol.com/finance/8-most-effective-ways-2024...

   The U.S. DOE reported that a high efficiency air conditioner can reduce your energy expenditure for cooling by 50%. More From GOBankingRates 7 Winter Clothing Items You Should Buy at Costco Now

6. Biden administration updates furnace efficiency standards for ...

   www.aol.com/lifestyle/biden-administration...

   The Energy Department issued its final efficiency rules for residential furnaces on Friday, which it projects will save Americans over $1.5 billion in heating expenses per year. The updated ...

7. Heating system - Wikipedia

   en.wikipedia.org/wiki/Heating_system

   The efficiency of a heating system is typically measured by its AFUE (Annual Fuel Utilization Efficiency) rating. Higher AFUE ratings indicate a more efficient furnace. [ 5 ] Environmental impacts are a concern with heating systems, especially those that burn fossil fuels.