This Coupon entitles a Homeowner to a $25 Discount off any Heating or Cooling Diagnostic Fee on a Repair Service or maintenance performed by Homer Nine & Sons, Inc. at their residence. Only one (1) coupon per service address will be accepted. Coupon must be printed and presented to your technician at the time the service is performed. This offer may not be combined with any other offer. Payment for the balance of the work is expected at the time of Service.