Promotional value expires 150 days after purchase. Amount paid never expires. May be repurchased every 180 days. Valid only within 5 miles of zip code 11226. Valid for Customers who reside in Brooklyn. Outside of service area additional fees and tolls may apply. Appointment required. Limit 1 per person. Limit 1 per household. Valid only for option purchased. Valid only for Natural gas Steam Boiler Or Hot water Hydronic Boilers.Does not apply to hot air furnaces, tankless units, split or PTAC systems or oil systems. Valid during normal business hours M-F 9am-5pm. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings