Generac 10-Year Extended Limited Warranty – Air-CooledGenerac 10 Year Extended Limited Warranty Air Cooled Evolution Controller 10 Year Extended Limited Warranty for Air Cooled Product Evolution controller models. Warranty covers 10 years parts and labor*. Can be purchased within 12 months of end user purchase date, which will remain as the start date. Unit must be registered and end user proof of purchase must be available upon request. Available on Generac, Honeywell and Centurion brand products. Air