When you need quality, state-of-the-art products, qualified technical support and complete customer service and follow-up, Mason-Dallas is here to serve you. No matter how simple or sophisticated the project, we would like to assist you, whether in concept, specification or details. Our founding principles of “Quality Products, Customer Service and Added Value” remain the cornerstone on which the company has grown and prospered. This philosophy, along with disciplined growth through the addition of other quality product lines over the years, has enabled Mason-Dallas to evolve into a multi-faceted organization able to provide a wide range of HVAC, hydronic, vibration/seismic and noise control solutions for your needs. Mason-Dallas is a manufacturers' representative, manufacturer, and distributor of products used in the commercial, industrial, municipal, and waste water treatment industries..