Our Qualifications Make You Comfortable
Why T.F. O’Brien? We’re:
- Factory Trained Technicians
- NATE Certified Technicians
- EPA Certified
- BPI Heating Certified
- Professional Engineers (PE)
- Family Owned since 1934
- National Association of the Remodeling Industry (NARI) Member
- Air Conditioning Contractors of America (ACCA) Member
- A Huntington Township Chamber of Commerce Member
- A New Hyde Park Chamber of Commerce Member
We service all industries, including:
- Banks
- Schools
- Industrial Buildings
- Funeral Parlors
- Medical Offices
- Houses of Worship
- Retail Spaces
- Restaurants
We help businesses control their heating and cooling cost through proper maintenance and operation.


