Plans auto-renew for monthly or yearly periods upon completion of the initial 12 month term. Cancellation requires a letter sent to Hexagon Air & Heat within 15 days of the renewal date to avoid charges. All money paid are non-refundable. Note: Membership cancellation prior to 12-month term will result in a required reimbursement payment by the customer for the sum of all discounts applied toward services by Hexagon Air & Heat