Expert Air Conditioning Installations and
Replacements on Long Island

When it comes to installing or replacing an air conditioning system on Long Island, NJM Mechanical and Contracting stands as a trusted leader. We specialize in delivering top-tier solutions that emphasize efficiency, durability, and long-term cost savings. Whether you're looking to equip your property with a brand-new cooling system or replace an outdated unit, our skilled professionals ensure a seamless and stress-free experience from start to finish.

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

Why Upgrade Your Air Conditioning System?

A modern, properly installed air conditioning system does much more than regulate indoor temperatures-it significantly enhances energy efficiency, reduces monthly utility expenses, and improves overall air quality. If your current system is more than 10-15 years old, struggles to maintain consistent cooling, or frequently requires repairs, it may be time to consider an upgrade. Investing in a new system not only enhances comfort but also increases the value and efficiency of your home or business.

Signs It's Time for a Replacement

  • Rising Energy Bills: An old or inefficient unit consumes more power to deliver the same cooling effect, leading to higher energy costs.
  • Inconsistent Cooling: Uneven temperatures or weak airflow indicate system inefficiencies that impact overall comfort.
  • Frequent Breakdowns: If you find yourself repeatedly calling for repairs, replacement is often the more cost-effective solution..
  • Strange Noises or Odors: Grinding, rattling, or musty smells could signify. serious internal issues requiring immediate attention.
  • Use of R-22 Refrigerant: Older units that rely on R-22 refrigerant are outdated and environmentally harmful. Upgrading ensures compliance with modern eco-friendly standards.
Pipes installed on a construction site.

Our Comprehensive Installation and Replacement Process

At NJM Mechanical and Contracting, we take a structured and meticulous approach to air conditioning installations and replacements, ensuring every step is handled with precision.
1. In-Depth Consultation & System Selection
Every property has unique cooling needs. Our experts conduct a detalled assessment of your space, factoring in square footage, insulation, occupancy, and your specific cooling preferences. We then recommend the most suitable air conditioning system that aligns with your budget and efficiency requirements.
2. Safe and Efficient Removal of Old Equipment
For system replacements, we carefully dismantle and remove the existing unit without disrupting your space. All outdated components are disposed of responsibly, following environmental and safety regulations.
3. Precision-Based Installation by Certified Professionals
Our licensed technicians execute the installation process with unmatched attention to detail. This includes:

  • Ensuring proper airflow distribution for consistent cooling
  • Verifying ductwork integrity to prevent air leaks and inefficiencies
  • Optimizing system placement for maximum performance and longevity
  • Implementing cutting-edge energy-efficient technology to reduce operational costs

4. Thorough System Testing & Performance Calibration
Before completing the job, we conduct a comprehensive inspection and testing phase. This ensures your new air conditioning system is operating at peak