Promotional value expires 180 days after purchase. Amount paid never expires. Limit 2 per person. Offer valid within 50 mile radius of zip code Richmond Hill. Not valid for cash back. Offer includes all tax (HST). Cannot be combined with other specials or offers, nor applied to current or past jobs. Residential service only. Appointments are to be performed during normal business hours. Normal cancellation policies apply. One Groupon per gas heating unit; must buy multiple coupons if you have more than one unit. Quote will be given on site for any additional work or repairs required. Does not apply to oil based furnaces; additional fees will apply for oil systems. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Learn about Strike-Through Pricing and Savings