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RUUD UGGD-10EZCMS Furnace

The RUUD UGGD-10EZCMS is a natural gas furnace. Its efficiency rating of 91.2% AFUE makes it a high-efficiency model. The first year that this furnace appears in our records is 2002.

Brand: RUUD
Manufacturer: RHEEM
Model Number: UGGD-10EZCMS
Product Family Name: FURN/Achiever 90 Plus w/CCC
Fuel: Natural Gas
Input Capacity: 105,000 BTUH
Output Capacity: 99,000 BTUH
Efficiency: 91.2 % AFUE
Energy Star Qualified: yes
Air Flow Configuration: Down
Electrical Phase: Single-phase
Combustion Type: Condensing

High efficiency furnaces are also known as "condensing" furnaces. This is because the gases generated by the furnace's initial combustion are forced through a series of pipes, where they give up more and more of their heat. Eventually, these gases cool enough that their water vapor condenses into liquid water, and is discarded. The extra efficiency of these furnaces is due to their ability to capture heat during this "condensing" phase.

One disadvantage of condensing furnaces is that they need a drain to discard the (often quite acidic) condensed water that is generated as the furnace extracts heat from water vapor.

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