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2. Masonry heater - Wikipedia

   en.wikipedia.org/wiki/Masonry_heater

   A masonry heater is defined by ASTM International as a "vented heating system of predominantly masonry construction having a mass of at least 800 kg (1,760 lb), excluding the chimney and masonry heater base. In particular, a masonry heater is designed specifically to capture and store a substantial portion of the heat from a solid fuel fire in ...

3. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   The energy source selected for a central heating system varies by region. 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.

4. 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 ]

5. Cost estimate - Wikipedia

   en.wikipedia.org/wiki/Cost_estimate

   Labor burdens, material costs, construction equipment costs, and, if applicable, subcontractor costs are also extended on the estimate detail form. [30] Other costs and pricing are added, such as overhead, profit, sales or use taxes, payment and performance bonds, escalation, and contingency. [31]

6. How Much Does It Cost to Replace a Water Heater? - AOL

   www.aol.com/much-does-cost-replace-water...

   Gas water heaters cost between $600 and $2,700 to replace, for an average cost of about $1,650. Electric water heaters cost between $600 and $3,500 to replace, for an average cost of about $2,100 ...

7. Rocket mass heater - Wikipedia

   en.wikipedia.org/wiki/Rocket_mass_heater

   Rocket mass heaters are developed from rocket stoves, a type of wood-burning stove, and masonry heaters. A primary design of a rocket mass heater consists of an insulated combustion chamber where fuel is burned with high efficiency at high temperature, and a large thermal mass in contact with the exhaust gases , which absorbs most of the ...