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27 Years
experience
Emergency
services
Commercial HVAC Solutions New York
County Fair Air Conditioning has been delivering premier HVAC solutions for commercial properties for over 25 years. Our expertise spans energy-efficient installations, comprehensive maintenance programs, and 24/7 emergency response services tailored to New York City and Long Island businesses. With a team of certified technicians from Local Union 638 and Union 30, we combine decades of collective experience with cutting-edge diagnostic tools to maximize equipment efficiency and minimize downtime. Our commitment to innovation is demonstrated through advanced asset management systems, QR code technology integration, and AI-driven dispatching for rapid service delivery.

As a leader in sustainable HVAC solutions, we hold CBCP certification and LEED AP credentials, enabling us to provide environmentally responsible systems that reduce operational costs. Our 50-year industry experience, supported by a modern fleet of service vehicles under five years old, ensures reliable support for over 2,000 client locations managing 10 million square feet of commercial space. We stand behind our work with a one-year satisfaction guarantee on all design-build installations, maintaining our reputation as a trusted partner for HVAC needs since 1999.
Services
HVAC Installation Preventive Maintenance Emergency Repairs Energy Audits System Retrofitting
Details
  • Year established: 1999
Highlights and features
  • We offer 50 years of combined HVAC industry experience
  • Our team provides 24/7 emergency response services
  • Certified technicians from Local Union 638 and Union 30
  • We utilize AI-driven dispatching and diagnostic technology
  • Equipment financing options available for installations
Services
HVAC Installation
Our design-build team creates custom HVAC systems for commercial properties, focusing on energy efficiency and long-term cost savings. We handle complete system replacements, including modular chiller installations and VRF equipment upgrades. With in-house engineering expertise and substantial bonding capacity, we manage projects of all sizes from initial design to final implementation.
Preventive Maintenance
Regular maintenance programs extend equipment lifespan while maintaining optimal efficiency. Our technicians perform comprehensive inspections, cleaning, and adjustments using advanced diagnostic tools. This proactive approach prevents unexpected failures and maintains peak performance for commercial HVAC systems across diverse facility types.
Emergency Repairs
We provide immediate HVAC repair services with live tracking of technician arrival times. Our AI-powered dispatch system identifies the nearest qualified technician for urgent issues. This rapid response capability ensures minimal business disruption for critical HVAC failures in commercial environments.
Energy Audits
Using IoT sensors and emerging technology, we identify energy inefficiencies and potential system issues. Our audits provide actionable recommendations to reduce operational costs while improving environmental performance. This data-driven approach supports LEED certification goals and sustainability initiatives for commercial properties.
System Retrofitting
We modernize outdated HVAC systems to improve efficiency and reduce energy consumption. Our retrofitting solutions incorporate the latest technology while maximizing existing infrastructure investments. This cost-effective approach extends equipment lifespan while achieving significant operational savings for commercial facilities.
People
Michael S. Herman
CEO & President
With over 35 years in HVAC services, Mike Herman leads MJI as CEO. Certified CBCP and LEED AP, he expanded the company through strategic acquisitions and co-founded MJI Energy Services Group in 2025 to advance building automation solutions.
Questions
Do you offer 24/7 emergency HVAC services?
Yes, our emergency service team is available 24 hours a day, 365 days a year for urgent HVAC repairs.
What areas do you service?
We serve New York City and Long Island commercial properties, supporting over 2,000 client locations across the metropolitan area.
Are financing options available for HVAC installations?
Yes, we offer equipment financing options for new system installations and major retrofitting projects.
What types of service agreements do you offer?
We provide comprehensive service agreements including preventive maintenance, warranty coverage, and asset management programs for commercial HVAC systems.
How do you ensure technician expertise?
Our technicians come from Local Union 638 and Union 30 with over 30 years' experience, plus ongoing manufacturer training for modern equipment diagnostics.