Circor is a leading manufacturer to the Heating, Ventalation and Air Conditioning industry. Many cities around the world have standardized on Circor products to heat and cool their buildings. Whether you are a district energy user/provider, hospital, university, municipality Circor has the products to fulfill your toughest requirements. The Circor brands that are prominent in this industry are Spence Engineering, Leslie Controls, Nicholson Steam Trap and SSI Equipment.