We curently have three models of TRANE Humidifers and all models can be used with all furnace models:
* THUMD500APA00A - which is fan powered with auto control. Good for homes of up to 4200 sq. ft. and has up to 18 Gal. per day capacity output.

* THUMD300APB00A - which has a large bypass with auto control. Good for homes of up to 4000 sq. ft. and has up to 16.8 Gal. per day capacity output.

* THUMD200ABM00A - which has a small bypass with manual control. Good for homes of up to 300 sq. ft. and has up to 12 Gal. per day capacity output.