We have a complete heating and air conditioning service department of highly-skilled and trained technicians who are available twenty-four (24) hours per day for residential, commercial and industrial environmental issues. We can service and repair a variety of heating and cooling systems, ranging from simple package units to complex applied systems, whether installed by NESM or another contractor. We also specialize in options for indoor air quality, whether for medical, education, public, commercial, industrial or residential utilization.

24/7 Emergency HVAC Services. Our team is always on call to address any service or repair need.


Maintenance & REPAIR

Customized preventative and repair maintenance for medical, commercial, industrial, education and residential HVAC to improve the efficiency, performance, reliability, and longevity of heating, ventilation, and air conditioning equipment.


Estimate and install all facets of HVAC unit and system replacements/ upgrades/ additions as required, with site specific needs and goals in mind. Capital expenditure planning and help with budgeting to proactively replace equipment.


  • Higher efficiency equipment solutions.
  • Energy usage analysis.
  • Solutions and maintenance specifically engineered to reduce energy consumption.


  • Strongest team of local mechanics, from around the State of California
  • Superior ability to diagnose and fix issues
  • Higher quality work – more likely to resolve problems on first visit
  • Because of enhanced skill level, we work faster – and therefore bill you for less time
  • Unionized: better trained, held to a higher standard
  • Skills, knowledge, and experience to competitively maintain and repair full spectrum of equipment: from simple rooftop units to high-end, complicated equipment and systems


  • Mike Hensley, Sr. Vice President and Department Manager has +30 years in industry, both as a mechanic and in management
  • Charles Franks, Controls Manager, has +35 years in the industry
  • Abel Lara, Service HVAC Foreman, has +10 years in the industry
  • Jerry Hyde, Superintendent Overall Plumbing and Pipe Fitting Dept. and has +30 years in the industry
  • Donovan Mayhue, Dr. General Plumbing Foreman with over +25 years in the industry
  • All of our service mechanics and plumbers have several years’ experience in the trade.