高效炉分为一般高效炉(Single Stage), 和两阶段加热试(Two Stages),而后者又分交流马达风机和直流马达风机之分。How to know mine is which one?

[super123]

Here is the detail from the inspector (old house)
Fuel/energy source: Gas
System type: Furnace
Furnace manufacturer: Bryant
Heat distribution: Ducts and registers
Approximate capacity: 80,000 BTU/hr
Efficiency: High-efficiency
Exhaust venting method: Induced draft
Approximate age: 7 years
Typical life expectancy: Furnace (high efficiency) 15 to 20 years
Main fuel shut off at:
Meter
Located at the right of the building.
Failure probability: Medium
Exhaust pipe (vent connector): PVC plastic
Chimney/vent: Masonry
Combustion air source: Outside - sealed combustion
Mechanical ventilation system for home: Bathroom exhaust fan

 

[uf65ca]

找型号啊，网上查啊
估计是 Single Stage / AC motor, 否则会列出来的。

 

[OTW100]

"How to know which is mine" ? But not " How to know mine is which one " -- It sounds like Chinglish.