Consider a generator in high dust conditions
This unit requires air filter replacement every 500 hours.
The Air Filter costs $100, The labour to replace it runs at $25,
If Mandated, filter disposal can run as high as $10 per filter. Assuming a 6000 hour run for this generator per year, 12 filter services will cost a total of between $1500 and $1620 per year.
By utilizing a Centri costing aproximately $500, a doubling of air filter life will give you a savings of $250 to $310 in year one(after absorbing the capital cost of Centri), with long term savings of $750 to $810.
Thereafter should you increase your filter life further, the savings are obviously greater. One issue that is not included in the above is the human factor. If the air filter is serviced improperly, you have the potential for accelerated engine wear and failure. Many of us deal with difficult air filter situations, in a high dirt environment. Every time the housing is opened for service, there is a real posibility for dirt and debris to travel down the intake tubing into the engine. By reducing the necessity to service, Centri reduces the risk.