Promotional value expires 120 days after purchase. Amount paid never expires. May be repurchased every 30 days. Appointment required. Limit 2 per person, may buy 2 additional as gifts. Valid only within 500 miles of zip code 08510. Only valid for one heating/A/C zone (most single-family homes only have one zone). For more information on how many zones you have please contact Crystal Clean. Does not include drier vent exhaust, blower fan/housing, indoor coils and burners, chimney/fireplace, mold remediation, flood damage, and fire restoration. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings