Expert Air Conditioning Repairs &
Maintenance on Long Island

When your air conditioning system malfunctions, it can disrupt your comfort, especially during Long Island's sweltering summer months. At NJM Mechanical and Contracting, we specialize in fast, efficient, and reliable air conditioning repairs and maintenance, ensuring your home or business remains cool and comfortable. Whether you're facing an unexpected system failure or simply need routine servicing, our skilled technicians are here to help.

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Comprehensive AC Repair Services

Even the most advanced air conditioning systems can develop issues over time. Our team is equipped with the expertise and tools necessary to diagnose and resolve a
wide range of AC problems. If your cooling system is not functioning optimally, we can pinpoint the problem and provide a swift, effective solution.

Common AC Problems We Resolve

  • Weak or Inconsistent Airflow – Poor air circulation can make certain areas of your home feel warmer than others, reducing overall comfort.
  • Blowing Warm Air Instead of Cool – This issue often stems from refrigerant leaks, compressor malfunctions, or thermostat misconfigurations.
  • Frequent Cycling or Short Cycling – If your system turns on and off more frequently than usual, it may indicate an oversized unit, a clogged filter, or an electrical issue.
  • Unusual Noises or Foul Odors – Loud banging, hissing, or grinding noises can signal mechanical failure, while musty odors may indicate mold growth inside your ducts or unit.
  • Refrigerant Leaks – Low refrigerant levels compromise cooling performance and can cause long-term damage to your system.
  • Frozen Evaporator Coils –Ice buildup on your evaporator coils can restrict airflow and prevent your AC from cooling effectively.
  • Thermostat Malfunctions – A faulty thermostat can lead to temperature inconsistencies and energy inefficiencies.

No matter the problem, our highly trained HVAC professionals are equipped to diagnose and repair any AC issue, restoring your system to peak performance quickly.

Pipes installed on a construction site.

Proactive Maintenance for Long-Term AC Efficiency

Regular maintenance is crucial to keeping your air conditioning system running smoothly, preventing unexpected breakdowns, and maximizing energy efficiency. NJM Mechanical and Contracting offers comprehensive maintenance services designed to extend the lifespan of your AC unit and reduce energy costs.

Pipes installed on a construction site.

Our Preventative Maintenance Services Include:

  • Filter Replacements – Dirty filters restrict airflow and force your system to work harder, increasing energy consumption. We replace or clean filters regularly to keep your system running efficiently
  • Refrigerant Level Checks & Refills – Low refrigerant levels can significantly impact cooling performance. We inspect and top off refrigerant levels as needed to maintain optimal operation.
  • Coil Cleaning & Condenser Maintenance – Dust, dirt, and debris can accumulate on your evaporator and condenser coils, reducing efficiency. We thoroughly clean these components to ensure proper heat exchange.
  • Comprehensive System Inspections – Our technicians conduct detailed inspections to identify worn-out parts, loose connections, and potential hazards before they cause major issues.
  • Thermostat Calibration & Programming – Proper thermostat settings can enhance energy efficiency and maintain consistent indoor temperatures.
  • Drain Line Cleaning & Mold Prevention –Clogged condensate drains can cause water leaks and mold growth. We clear blockages and treat your system to prevent future problems.

By scheduling routine AC maintenance, you can avoid costly emergency repairs and ensure your air conditioner operates at peak performance throughout the summer season.

Seasonal Tune-Ups: Prepare Your AC for Summer

Don’t wait until the first heatwave to check your air conditioning system. Our seasonal tune-ups ensure your AC is ready to handle rising temperatures with ease. During a tune-up, we:

  • Perform a full-system diagnostic test
  • Tighten electrical connections and inspect wiring
  • Test and calibrate the thermostat for accurate temperature control
  • Lubricate moving components to reduce friction and wear
  • Inspect ductwork for leaks and blockages
  • Check for unusual vibrations or sounds that may indicate impending issues
A toilet and sink in a bathroom on top of wooden floor.

A well-maintained AC unit not only cools your home more effectively but also operates more efficiently, helping to reduce your monthly energy bills.

A toilet and sink in a bathroom on top of wooden floor.

Emergency AC Repair: Fast & Reliable Service When You Need It Most

Air conditioning failures rarely happen at convenient times. Whether it’s the middle of the night, a scorching summer afternoon, or a holiday weekend, our emergency repair services ensure you won’t be left sweating it out. Our rapid-response team is available to address urgent cooling issues and restore comfort to your home or business as quickly as possible.

We arrive equipped with industry-leading tools and high-quality replacement parts, allowing us to diagnose and fix most problems on the spot. With our expertise and commitment to customer satisfaction, you can trust NJM Mechanical and Contracting to provide timely and effective solutions whenever you need them.

Why Choose NJM Mechanical and Contracting?

With so many HVAC service providers available, choosing the right company for your air conditioning repair and maintenance needs is essential. Here’s why NJM Mechanical and Contracting stands out:

  • Experienced & Certified Technicians – Our team consists of highly trained HVAC professionals with years of hands-on experience in diagnosing, repairing, and maintaining all AC makes and models.
  • Prompt & Reliable Service – We value your time and understand the importance of a functioning air conditioning system. Our team works quickly and efficiently to resolve issues with minimal disruption to your daily routine.
  • Transparent Pricing – We provide upfront, competitive pricing with no hidden fees, ensuring you get the best value for your investment.
  • Customer Satisfaction Guarantee –Your comfort and satisfaction are our top priorities. We stand behind our work and are committed to delivering top-quality service every time.
  • Locally Owned & Operated – As a trusted local business serving Long Island, we are dedicated to supporting our community with honest, dependable HVAC services.
Pipes installed on a construction site.
A toilet and sink in a bathroom on top of wooden floor.

Schedule Your AC Repair or Maintenance Today

Don’t let a faulty air conditioning system disrupt your comfort this summer. Whether you need emergency repairs, routine maintenance, or a seasonal tune-up, NJM Mechanical and Contracting has the expertise to keep your AC running efficiently.

Contact us today to schedule your service appointment and experience the difference of working with Long Island’s premier HVAC specialists.