Thornton Heating & Sheetmetal is a Wood River Valley based residential and commercial HVAC contractor that has been building extraordinary heating and cooling systems since 1973. Our quality workmanship has earned us a reputation as one of Idaho's premier HVAC contractors. We specialize in HVAC system design for new residential and commercial construction as well as renovations, add-ons, and service of existing systems. We are experts in sheetmetal fabrication. On call Sat-Sun.