Generac 7-Year Extended Limited Warranty – Air-CooledGenerac 7 Year Extended Limited Warranty Air Cooled Evolution Controller 7 Year Extended Limited Warranty for Air Cooled Product Evolution controller models. Warranty covers 7 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