New Construction HVAC Installation in Long Island, NY | Nassau & Suffolk County Experts

Built for Builders. Trusted by General Contractors Across Long Island

At Around The Clock Refrigeration Inc., we specialize in new construction HVAC installation in Long Island, NY, delivering high-performance heating and cooling systems for residential and light commercial builds across Nassau County and Suffolk County.


From custom ductwork design to final system startup, we work alongside builders, developers, and homeowners to ensure every project is completed on time, on budget, and built for long-term efficiency.

Full-Service HVAC for New Construction Projects

We provide complete HVAC solutions for new builds throughout Long Island, including:

  • Central Air Conditioning System Installation
  • High-Efficiency Heat Pump Systems (R32 & R454B Compliant)
  • Ductless Mini Split Installation (Mitsubishi & Inverter Systems)
  • Custom Fabricated Ductwork (Designed In-House)
  • Boiler & Hydronic Heating Systems
  • Ventilation & Indoor Air Quality Solutions


Every system is engineered with proper load calculations to ensure maximum comfort, efficiency, and code complianc

Why Builders Choose Us in Nassau & Suffolk County

✔ Custom HVAC Design & Load Calculations
We don’t guess — we engineer. Every system is sized using Manual J load calculations to ensure optimal airflow and performance.


✔ In-House Ductwork Fabrication
Our team designs and builds custom duct systems to perfectly match your layout — no shortcuts, no airflow issues.


✔ Code-Compliant Installations
We stay ahead of New York State HVAC regulations, including new refrigerant standards (R32 / R454B systems).


✔ Reliable Project Scheduling
We understand construction timelines and coordinate seamlessly with general contractors and other trades.


✔ Built for Long-Term Efficiency
Our installs focus on energy savings, humidity control, and system longevity, reducing callbacks and warranty issues.

Our New Construction HVAC Process

  1. On-Site Consultation & Blueprint Review
  2. Load Calculations & System Design
  3. Ductwork Fabrication & Rough-In Installation
  4. Equipment Installation (Furnace, Air Handler, Condenser)
  5. System Pressure Testing & Leak Checks
  6. Deep Vacuum (Below 500 Microns – EPA 608 Standard)
  7. Final Startup, Air Balancing & Inspection


We don’t just install — we document, test, and verify every system.

Serving All of Long Island, NY

We proudly provide new construction HVAC installation services in:

  • Nassau County, NY
  • Suffolk County, NY
  • Wantagh, Seaford, Massapequa
  • Hicksville, Levittown, Bethpage
  • Merrick, Bellmore, Freeport
  • Plainview, Port Washington, Roslyn

 Build It Right the First Time

When it comes to new construction, your HVAC system is one of the most important investments in the home. Poor design leads to comfort issues, high energy bills, and premature system failure.


At Around The Clock Refrigeration Inc., we make sure your system is:

  • Sized correctly
  • Installed professionally
  • Built to last

Get a New Construction HVAC Quote Today

Partner with Long Island’s trusted HVAC installation experts for your next build.

Brands We Work With

We install and service industry-leading brands, including but not limited to:

York Heating and Air Conditioning logo with a snowflake design on blue and the brand name in dark grey.
Trane logo with an orange circle and lines, next to the word "TRANE" in orange.
Rinnai logo in red text on white background.
Rheem logo: Red circle with white outline. Rheem text in white within the circle.
Black and white "OXBOX" logo with gold bar, "A Trane Brand."
Carrier logo: white text on a blue oval, with a white outline.