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![]() thompson@cass.net Emergency Service 1-734-279-1244 |
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![]() "Whatever It Takes" |
| Boilers | Return to heating and cooling products |
Features |
Preferred™ BW9 Boiler |
Preferred™ BW 4/5 Boiler |
Preferred™ BW 3 Boiler |
Legacy™ BW/BS Boiler |
| Efficiency AFUE | Up to 90% AFUE |
Up to 86.5% AFUE |
Up to 84.4% AFUE |
Up to 82.7% AFUE |
| Energy Star Rated | ![]() |
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No | No |
| Fuel Type | Gas | Oil | Gas | Gas |
| Heat Exchanger | Cast Aluminum | Cast-iron | Cast-iron | Cast-iron |
| Electronic Ignition | Yes | No | No | Yes |
| Factory Warranty Parts | 10 yrs. | 10 yrs. | 10 yrs. | 10 yrs. |
| Factory Warranty Heat Exchanger | 15 yrs. | 20 yrs. | 20 yrs. | 12 yrs. |
| Cost | $$$$ | $$$ | $$ | $ |