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Serving Long Island Since 1934   516.488.1800

  • bbb a+
  • Contact Us
  • Promotions
  • Air Conditioning
    • New Air Conditioning Installation
    • Air Conditioning Repair
    • Air Conditioning Maintenance
    • AC Service
    • Air Conditioning Systems
    • Ductless Air Conditioning
    • Mini-Split Air Conditioning
    • Variable Refrigerant Volume (VRV) Air Conditioning
    • High Velocity Air Conditioning
    • Thermostat Repair & Replacement
  • Heating
    • Heat Pumps
    • heating system maintenance
    • heating system repair
    • heating systems
    • Heating Service
    • new heating system installation
    • High Velocity Heating
    • Ductless Heating
    • boilers
    • Furnaces
    • Oil Conversions
    • Air Quality Products
    • Replacement Thermostats & Repairs
  • ductless
    • Ductless AC & Heating Installation
    • Ductless Air Conditioner Contractor
    • ductless repair & maintenance
    • Ductless System Warranties and Costs
    • Mini-Split Air Conditioning & Heating
    • Mini-Split Repair & Maintenance
  • Commercial HVAC
    • Commercial Air Conditioning Installation & Repair
    • Commercial Boilers Installation & Repair
    • Commercial Heating Installation & Repair
    • Commercial Maintenance
      • Commercial Cooling System Tune-Ups
      • Commercial Heating System Tune-Ups
    • Commercial Rooftop Installation & Repair
    • Variable Refrigerant Flow (VRF) Commercial Ductless
  • Indoor Air Quality
    • Air Sterilization
    • Air Scrubbers
  • Resources/About
    • Recent Projects and Reviews
    • Kerry’s HVAC Blog
    • Incentives
    • Service Areas Map
    • Careers
      • HVAC Training Program
    • Apply For Financing
    • Installations Before and After
    • HVAC Maintenance Plans
    • Residential HVAC Resources
    • generators
    • Learn About Ductless Systems (Infographic)
    • HVAC Solutions
    • Privacy Policy

Serving Long Island Since 1934
516.488.1800

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    • Ceiling Saver Kit
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Testimonial Rating
Outstanding job on installation. Attention to detail and genuine care about the job!! 🙂 Thank you.

M.W. - Huntington, NY

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Why Choose T.F. O'Brien

T.F. O'Brien
100 Denton Ave., New Hyde Park, NY
(516) 488-1800
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