What Carpet Cleaning Extractor I can use to clean Airduct?

[Jay P]

Im starting a new business Im looking to do Carpet Cleaning and Airduct using the same machine (Extractor) which one you recommend except the Goliath, and what equipment/attachment brushes that would be ideal with that Extractor? The

[Donald]

Using the same machine for both Duct Cleaning and Carpet Cleaning

You can use the same machine for both types of work.
You should read the earlier post at

http://www.steam-bright.net/showthread.php?1408-What-can-I-use-with-a-Truck-Mounted-Carpet-Cleaning-Machine

This is a more complete list of each type of agitation system that can be used with a carpet cleaning vacuum

I think you are asking what currently is the 2nd strongest electric machine?
Please read post at

http://www.steam-bright.net/showthread.php?3799-What-carpet-cleaning-machines-are-designed-to-operate-over-100-ft-of-hose

Currently 2nd place is held by Mytee Escape with a 40 amp vacuum making 59,800 vacuum units.

http://www.steam-brite.com/advanced_search_result.php?keywords=mytee+escape