24/7 EMERGENCY SERVICE: (209) 466-1477

JH Simpson Company, Inc. combines proven building experience across many client sectors with expertise in a number of specialty services that are critical to quality commercial and industrial customers. The result is a high level of competency in delivering energy saving service solutions to clients that directly support their business objectives.

Customer Maintenance Audits

JH Simpson Company, Inc. can provide cost-efficient audits for our customers on a onetime basis or ongoing basis through facilities maintenance, production equipment maintenance, and or inclusive maintenance programs. This strategy allows our customers to focus on their core competencies while leaving maintenance issues to people who specialize in that function.

A Culture of Safety

JH Simpson Company, Inc. puts safety at the forefront, regardless of project size or scope. Our principle of doing business extends from top management down to field operations. We worked deliberately to develop a culture where safety comes first, and we are fully committed to sustaining it. As a result, we have zero tolerance for practices that do not promote a safe workplace.

Solutions for Industrial Progress

Whatever your industry, JH Simpson Company, Inc. is here with the expertise needed for your buildings maintenance. Our specialists deliver the highest caliber of quality, safety and efficiency in a wide array of maintenance programs.
We possess the ingenuity, skill, and experience needed to successfully maintain your facility. Whatever the nature or size of your project, our professionals have the proven ability to meet or exceed your expectations.

  • Boilers
  • Chillers
  • Cooling Towers
  • Air Handlers
  • Pumps
  • Package Systems
  • Split Systems
  • Direct Digital Controls
  • Pneumatic Controls
  • Hot Water Piping
  • Piping Insulation
  • Plumbing
  • Valve Replacements
  • Water Balancing
  • Air Balancing
  • Air Compressors
  • Ductwork
  • Sheet Metal Fabrication
  • Johnson Controls


To make an appointment please call (209) 466-1477 or fill out the form below. Someone from J.H. Simpson Company will respond on the day that your email is received.


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