Coupons & Special Offers At Walker Heating & Air Conditioning, we are very competitive with our HVAC pricing. Check out our coupon page regularly for new promotions, specials and seasonal coupons. Thank you for trusting us with your HVAC services! 5% OFF Senior Military Veteran $50 OFF ANY REPAIR $79 Tune-Up Maintenance $350 OFF FULL HVAC INSTALL $200 OFF NEW AC UNIT FREE HVAC Consultation $50 OFF NEW HUMIDIFIER $100 OFF ANY AIR PURIFIER