Emergency Service

Going Above and Beyond from Start to Finish

Cox is the leading local HVAC company who provides more – more of the talent you need, more attention to detail, more value from the relationship. Our culture of going above and beyond shows up in the top-tier service we deliver to you every day. With a lead and backup technician on every account – and access to a company-wide team of expertise – you can have total confidence that anything you might need is a just call away.

Preventative Maintenance Services

At Cox, optimization is what we do – from what we help clients achieve to the way our teams work each day. This philosophy drives our preventive maintenance offering: Our deeply experienced operations teams ensure that clients’ HVAC systems maintain peak efficiency, reduce the risk of costly breakdowns and system failures, lower the rate of emergency calls, minimize downtime, and otherwise maximize the value you get from your HVAC infrastructure. We work with you to develop the program that’s just right for your needs – whether that’s a Custom Agreement or a Full Maintenance package. Programs can cover a range of elements such as:

  • Condenser Coil Cleaning
  • Air Filter Change
  • Tube Brushing
  • And More

Repair, Replacement, Design-Build Services

When problems do occur, you can have complete peace of mind in the response that Cox provides. Our service techs are familiar with your systems and on-site demands, and you can trust them to be as responsive as your own team. We are ready to handle a full range of issues, including:

  • 24 Hour Emergency Repairs
  • Equipment Replacement
  • System Design/Re-Design
  • Equipment Upgrade
  • Energy Audit
  • Staffing Services

We serve all of the Boston Area, with technicians able to get on site quickly. And with paperless documentation, we further streamline and speed the response and repair process.

Clients Served

Every industry has its own unique requirements and demands. Our teams combine their HVAC service expertise with an understanding of the unique considerations specific to your particular business and sector.

  • Life Science
  • Healthcare
  • Manufacturing/Industrial
  • Mission Critical
  • Education
  • Luxury Apartments
  • Office/Commercial
  • Pharmaceutical


With over 100 years of industry experience, there’s little that our talented crews haven’t handled before. Our technicians come prepared to address the full range of equipment and systems you employ. This includes:

  • Chillers
  • Cooling Towers
  • Boilers
  • Air Handling Units
  • Roof Top Units
  • VRF Systems
  • Mini Splits
  • Heatpumps
  • Vane Axial Fans
  • Make Up Air Units
  • Pumps
  • Exhaust Fans