• Aire Serv of Smith County Aire Serv of Smith County Pay Nothing for 12 Months Get a brand-new HVAC system with $0 payments and 0% interest if paid in full within 12 months. Don't wait, upgrade your home's comfort today! * Interest waived if amount financed is paid in full within 12 month Promo Period. No payments during Promo Period; 84 monthly payments after Promo Period. Expires: 5/01/2025