Client Portal

Thayer LLC – Portsmouth, NH

Thayer LLC
1465 Woodbury Ave PMB 804
Portsmouth NH 03801
(800) 649-4197

Since 1981, the Thayer Corporation has been committed to providing the highest quality, performance-based services and business solutions to each individual customer. Our dedicated team of professionals takes the time to understand the complexity of each unique system to deliver the design, installation, maintenance, and repairs that our clients expect when it comes to their HVAC/R and mechanical systems.

Hours of Operation



  • Building Control Systems
  • Design Build
  • Equipment Installation and Replacement
  • HVAC Preventative Maintenance
  • Precision Agriculture
  • 24-Hour Emergency Service

Partner Contact

Greg Marles
(800) 649-4197

Additional Media

As Computrols partner in Maine and New Hampshire we are committed to ensuring our facility and building managers have the highest-level system when it comes to building automation so they can ensure occupant safety while operating as efficiently as possible. Our mission to create and maintain healthy, comfortable, efficient and productive environments is a top-down value and one that has built decades of trust between our company and the customers we serve.

Newmarket Case Study – Thayer