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2. Construction bidding - Wikipedia

   en.wikipedia.org/wiki/Construction_bidding

   Construction bidding is the process of submitting a proposal to undertake, or manage the undertaking of a construction project. The process starts with a cost estimate from blueprints and material take offs .

3. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   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 electrical backup for occasional unattended operation.

4. List of most expensive U.S. public works projects - Wikipedia

   en.wikipedia.org/wiki/List_of_most_expensive_U.S...

   The following list includes projects to build new highways or improve existing ones, including roadways, bridges, and tunnels. It includes only projects that are underway or completed. Additionally, projects with multiple independent segments (e.g., I-69 Indiana-Texas Extension , Trans-Texas Corridor ) are not included, though individual ...

5. New efficiency standards for home furnaces unveiled [Video] - AOL

   www.aol.com/news/biden-administration-unveils...

   Close-up of flames on a natural gas furnace burner in the HVAC system of a suburban home in San Ramon, Calif., Dec. 29, 2019. (Photo by Smith Collection/Gado/Getty Images) (Smith Collection/Gado ...

6. 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]

7. EnergyGuide - Wikipedia

   en.wikipedia.org/wiki/EnergyGuide

   Clothes washers, dishwashers, refrigerators, freezers, televisions, water heaters, window air conditioners, mini split air conditioners, central air conditioners, furnaces, boilers, heat pumps, and other electronic appliances are all required to have EnergyGuide labels. [1]

8. Passive house - Wikipedia

   en.wikipedia.org/wiki/Passive_house

   In the United Kingdom, an average new house built with the passive house standard used 77% less energy for space heating compared to the house built under circa-2006 Building Regulations. [ 70 ] In Ireland , a typical house built to passive house standards instead of to the 2002 Building Regulations consumed 85% less energy for space heating ...

9. Digging - Wikipedia

   en.wikipedia.org/wiki/Digging

   Digging, also referred to as excavation, is the process of using some implement such as claws, hands, manual tools or heavy equipment, to remove material from a solid surface, usually soil, sand or rock on the surface of Earth.