Generac 7 Year Liquid Cooled Extended Limited Warranty Extension - 70Kw To 150KwGenerac 7 Year Liquid Cooled Extended Limited Warranty Extension 70kW to 150kW 7 Year Extended Limited Warranty for liquid cooled units up to 60kW with the Nexus or Evolution controller. Warranty covers 7 years parts, labor and travel*. 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. Generac Power Systems 7 Year (7C)