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2. Modine Manufacturing Company Announces AHR Expo Show Lineup - AOL

   www.aol.com/news/2013-01-24-modine-manufacturing...

   Modine Manufacturing Company Announces AHR Expo Show Lineup Company to feature newly acquired Geofinity™ geothermal heat pumps, expanded Effinity 93® unit heater line and Atherion ® packaged ...

3. Modine Manufacturing - Wikipedia

   en.wikipedia.org/wiki/Modine_Manufacturing

   Modine Manufacturing is a thermal management company established in 1916 in the United States. [1] [2] The company started as Modine Manufacturing Company by Arthur B Modine who patented the Spirex radiator for tractors. The Modine company manufactured the Turbotube radiator for Ford Model T cars. [3]

4. Thermal efficiency - Wikipedia

   en.wikipedia.org/wiki/Thermal_efficiency

   An electric resistance heater has a thermal efficiency close to 100%. [8] When comparing heating units, such as a highly efficient electric resistance heater to an 80% efficient natural gas-fuelled furnace, an economic analysis is needed to determine the most cost-effective choice.

5. Coefficient of performance - Wikipedia

   en.wikipedia.org/wiki/Coefficient_of_performance

   [1] [2] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs. The COP is used in thermodynamics . The COP usually exceeds 1, especially in heat pumps, because instead of just converting work to heat (which, if 100% efficient, would be a COP of 1), it pumps additional heat from a heat source to ...

6. Furnace (central heating) - Wikipedia

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

   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] Waste gas and heat are mechanically ventilated through either metal flue pipes or polyvinyl chloride (PVC) pipes that can be vented through the side or roof of the structure.

7. 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 ...