1.

Induced draft venting

2.

Multi-port in-shot burners

3.

Adaptive hot surface silicon nitride igniter

4.

Sealed combustion

5.

Aluminized steel heat exchanger

6.

Heavy steel insulated cabinet

7.

Self-diagnostic controls

8.

AL29-4C™ stainless steel secondary heat exchanger

9.

Internal vent pipe

10.

Variable speed blower motor operates at a lower, more efficient speed than conventional blowers. American Standard’s exclusive Comfort-R™ feature is an added bonus with variable speed. Comfort-R™ provides greater humidity control in cooling.

11.

Dual door latches

12.

Cleanable filter

13.

Spring-loaded filter rack

14.

Automotive grade gaskets and insulated blower door

15.

Direct vent option

16.

Two-stage gas valve

17.

Variable speed draft inducer

Convertible to horizontal; 2-stage gas valve; 2-speed power venter; PVC venting; Variable speed blower; Multi-port In-shot burners; Heavy gauge aluminized steel heat exchanger up to 96.7 AFUE; Lifetime limited primary heat exchanger or secondary heat exchanger warranty; 5-year limited parts warranty.