Air Conditioning Repair & Maintenance on Long Island, NY
Restore comfort quickly with NJM’s reliable air conditioning repair and maintenance services. Our licensed HVAC technicians diagnose issues, perform tune-ups, and provide ongoing system care to keep your AC running smoothly throughout the summer — serving Nassau and Suffolk County.
Fast Repairs • Preventive Maintenance • Emergency AC Service
Reliable & Professional AC Repair Services Backed by 33+ Years of Experience
When your AC system fails or struggles to keep your home cool, NJM Mechanical and Contracting provides expert diagnostics and fast, effective repairs. Our technicians service all major AC brands and system types, ensuring safe operation and long-lasting performance.
Regular maintenance is essential to prevent breakdowns, improve efficiency, and extend equipment life. From seasonal tune-ups to emergency repairs, NJM delivers dependable cooling solutions tailored to your comfort nee
Complete diagnostics and repairs for cooling issues including refrigerant leaks, electrical failures, compressor problems, and airflow restrictions.
Seasonal inspections, coil cleaning, filter replacement, lubrication, and full system optimization to improve efficiency and prevent breakdowns.
Fast-response emergency cooling repair for units that stop working unexpectedly during peak heat.
Complete performance testing including airflow analysis, thermostat calibration, electrical component checks, and temperature differential monitoring.
Refrigerant leak detection, sealing, recharging, and correction of pressure issues to restore proper cooling performance.
Clearing clogged condensate drains, servicing pumps, and inspecting duct airflow to prevent water damage and cooling loss.
Expert Cooling Solutions Backed
Backed by Over 33 Years of Experience
Why Choose NJM for AC Repair or Maintenance?
With certified technicians and decades of hands-on experience, NJM delivers reliable and efficient cooling services for homes and commercial properties.
Fully certified to diagnose and repair all major AC brands and system types.
Quick troubleshooting and on-the-spot repairs to restore comfort promptly.
Tune-ups designed to reduce breakdowns, improve efficiency, and extend system life.
Rapid response for AC failures during extreme heat or unexpected system breakdowns.
Serving Long Island since 1991 with proven reliability and technical expertise.
Upfront quotes, no hidden fees, and clear explanations for every service.
Electrical & Control System Inspection
Checking wiring, relays, breakers, and control boards for safe operation.
Condensate Drain & Pump Check
Verifying proper drainage to prevent clogs, leaks, and water damage.
Refrigerant Level & Leak Detection
Ensuring safe refrigerant pressure and identifying leaks that impact performance.
Filter & Blower System Inspection
Examining filters, blowers, and air movement systems for optimal performance.
Coil Cleaning & Airflow Evaluation
Cleaning condenser and evaporator coils while checking airflow for efficient cooling.
Long Island Code & Safety Compliance Review
Ensuring all AC repairs and maintenance follow local mechanical and safety standards.
Trusted Cooling Expertise for Long Island Homes & Businesses
Our AC Repair & Maintenance Safety Services Include:
NJM performs detailed AC inspections to ensure your system runs safely, efficiently, and reliably throughout the summer.
Find Cooling Services Near You!
Service Area Links:
- Long Island
- Nassau County
- Suffolk County