Your older air conditioning system is eating up energy and dollars. New AC systems are more efficient and less expensive.
There's no need to suffer when the weather outside on Long Island is sweltering - trust T.F. O'Brien to help you cool off with new air conditioning installation. We're committed to providing the absolute best customer service and expert advice to Long Island residents - we've been doing so for more than 90 years!
"Did you know that HVAC systems account for nearly half of your home’s energy use? Upgrading to a high-efficiency system can significantly lower your energy bills."
Nikola Jaric
Service Technician
Save Thousands On Qualifying Heat Pump or Central Air Conditioning System Installations
- PSEG: Save up to $11,000 on a new heat pump whole home project
- NYS Clean Heat: Save up to $2,000 on a new heat pump
- IRA: Save up to $2,000 on a new heat pump or $600 on central A/C
- PSEG: Save $250 on a new heat pump
"Did you know that your outdoor unit needs at least two feet of clearance around it to work properly? Keep bushes and debris away for optimal airflow."
Nick Betka
Lead Service Technician
Get Started with an Estimate
Call T.F. O'Brien Cooling & Heating at (516) 488-1800 or complete our short form below and a representative will reach out to you.
"Completely Satisfied"
"I was completely satisfied with the professionalism, quality, and courteousness of your service. I will continue to call on and recommend you all future AC/Heating needs. Thank You."
- T.F., Baldwin, NY
4.8
1,538 reviews
4.7
63 reviews
T.F. O’Brien review scores as of 3/13/25
T.F. O'Brien is a full-service air conditioning contractor. In addition to new AC installation on Long Island, NY we also provide:
Click For Areas We Provide Air Conditioning Services:
We provide air conditioning on Long Island, including Nassau County, Suffolk County and the following areas:
- Bayside, NY
- Bellerose, NY
- Breezy Point, NY
- Brooklyn, NY
- Brookville, NY
- Cold Spring Harbor, NY
- Commack, NY
- Dix Hills, NY
- Douglaston, NY
- East Meadow, NY
- East Williston, NY
- Elmont, NY
- Floral Park, NY
- Flushing, NY
- Fort Salonga, NY
- Franklin Square, NY
- Freeport, NY
- Fresh Meadows, NY
- Garden City, NY
- Glen Cove, NY
- Glen Head, NY
- Great Neck, NY
- Greenlawn, NY
- Hauppauge, NY
- Huntington, NY
- Jericho, NY
- Kings Park, NY
- Long Island, NY
- Lloyd Harbor, NY
- Manhasset, NY
- Melville, NY
- Merrick, NY
- Mineola, NY
- New Hyde Park, NY
- Northport, NY
- Oceanside, NY
- Oyster Bay, NY
- Park Slope, NY
- Plainview, NY
- Port Washington, NY
- Queens, NY
- Queens Village, NY
- Rockaway Point, NY
- Rockville Centre, NY
- Roslyn, NY
- South Hempstead, NY
- Smithtown, NY
- Syosset, NY
- Valley Stream, NY
- West Hempstead, NY
- Westbury, NY
- Whitestone, NY
- Williston Park, NY
Excellent HVAC Service Backed By a 100% Satisfaction Guarantee
T.F. O'Brien will always look out for your best interest and provide exceptional, high-quality, new air conditioning installation to ensure expected comfort and safety.
Our entire company strives to make sure you enjoy working with us and never have to deal with a hassle. We guarantee that you, the customer, after purchasing our products and/or services will be 100 percent satisfied - in fact, you won't pay until you are.
Benefits of a New Air Conditioning System
- Save money with lower energy bills
- Lessened likelihood of costly repairs
- Quieter operation
- More environmentally friendly
- Improved sleep, work, and exercise
- Decrease chances of asthma and allergy attacks
- Improve indoor air quality
- A variety of options specific to your home's needs
- Even, consistent home cooling
- Protects furniture and electronics
At T.F. O'Brien, we’re pleased to provide Long Islanders with what we believe to be some of the best quality, most efficient, new air conditioning products on the market. If you're looking for a quiet, attractive and energy efficient air conditioning system, T.F. O'Brien is ready to assist you. T.F. O'Brien proudly serves all of Long Island, including Nassau County, Suffolk County, and Brooklyn. Simply call us at 516.488.1800.