A1 Heating and Air Conditioning

A1 Heating and Air Conditioning holds a 4.9-star rating across 168 verified reviews, positioning them among the highest-rated HVAC contractors serving Suffolk and Nassau Counties on Long Island. This family-owned business operates with full licensing and insurance, offering around-the-clock emergency response alongside scheduled same-day appointments. Their service area encompasses communities throughout Setauket-East Setauket and neighboring towns, delivering both residential heating and cooling solutions under one roof.

What distinguishes A1 Heating and Air Conditioning from competitors is their commitment to transparent pricing and comprehensive warranty coverage. They back qualifying installations with up to 10-year warranty protection on both parts and labor, a terms package that few Long Island contractors match. Their technicians maintain NATE certification and receive ongoing factory training across all major equipment brands. The business offers flexible financing including promotional 0% interest options, making system replacements more accessible for homeowners facing unexpected equipment failures.

Reviewers consistently highlight specific technicians who exceeded expectations during stressful situations. One customer described how A1 dispatched a technician within four hours of a Saturday morning call, with the team that had originally installed the heat pump years earlier returning to diagnose and repair a refrigerant leak under warranty. Another reviewer praised technician Ricardo for arriving promptly, explaining the repair process clearly, and restoring heat within hours on the same day the thermocouple failed. A third customer noted the crew's meticulous approach to a ductless mini-split installation, taking time to demonstrate system operation to the entire family and leaving the worksite immaculate.