Question

differentiate between high efficiency and low efficiency fuel. ​

Answer 1

Answer:

Standard-efficiency furnaces convert roughly 80% of the energy from gas into heat. High-efficiency furnaces convert 90-97% (depending on the model) of the energy from gas into heat. So basically: high-efficiency furnaces use less fuel.

High-efficiency furnaces have two CPVC vent pipes, whereas older, less efficient furnaces only have one steel exhaust pipe. ... Additionally, high-efficiency models condense, meaning they have a built-in system to remove moisture that forms inside the heat exchanger.

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