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hvacr and plumbing service

Beyond construction, we offer an array of mechanical services in HVACR; plumbing; process and high purity piping; sheet metal repair; and equipment setting. Available 24 hours a day, 7 days a week, our Service group employs the best professionals in the industry. With QR-coded equipment tags, our technicians can track and document the history of maintenance, saving the client time and money while keeping systems operating day in and day out. To ensure continuous, around-the-clock service, each customer account is assigned a primary and secondary technician -- experts dedicated to your facility and to your success.


Keeping San Diego cool with our mechanical expertise is only part of our HVACR service offerings. With our skilled techs and customer-first philosophy, our clients also receive:

  • Ground-up and tenant improvement
  • Facilities staffing
  • Equipment service and repairs
  • Building commisioning services
  • Reduced service rates for contract customers
  • Install, service, and repair low/med refrigeration systems
  • VFD installation, maintenance, and service



From basic plumbing service needs to maintaining complex systems and installations, our service team of skilled techs keep our clients' facilities running effiiciently with offerings like:

  • Ground-up and tenant improvement
  • Private property site utility installation
  • Domestic water, drain waste and vent, and fuel gas
  • Medical plumbing services (Med Gas Certified)
  • Full project management services
  • Conventional plumbing systems
  • Commercial boilers, pumps, and compressed air system repair and replacement
  • Hot taps of live systems
  • Repair of all plumbing fixtures
  • Steam and steam condesate systems
  • Condensing water, chill water, heating hot water & glycol systems
  • High-purity water systems
  • Backflow certification
  • Cable, camera, jetting, and location services for sewer and storm drain lines
  • Drain maintenance and grease trap services
  • Pipe freezing


"Countywide Mechanical Systems has responded to and exceeded our every business need. In often hectic situation, we have repeatedly received courteous, prompt, and reliable service. They are one of the best mechanical service companies I have had the privilege to work with."

- Jim Jennings, CCAM