*"Free Upgrade" offer applies only to residential purchase and payment or financing in full of heating and cooling system. Offer valid at time of signing. Upgrade availability may vary by location, selection, and value, and does not include permitting or inspection requirements. Offer void in the event of delays due to customer, supply-chain, or electrical hook-up, inclement weather, product availability or property accessibility. Limit one per household, multi-systems replacement does not apply. Offer expires 10-31-21.