24/7 Emergency Service
216 East Montauk Highway, Hampton Bays, NY 11946
License #:   36162-MP   |   38242-ME
Air Conditioning

Air Conditioning Service & Installations In East Hampton, Hampton Bays, Hamptons, Riverhead, Sag Harbor, Southampton, Westhampton, and Surrounding Areas

Weber & Grahn is known as the Gold Standard of HVAC

Weber & Grahn is dedicated to proving that excellence in the air conditioning industry is not just a lofty goal but an achievable reality. Our team strives to set a benchmark for superior service and quality workmanship in every project we undertake, whether it involves the installation of a new system or the repair of an existing air conditioning unit.

With a focus on continuous improvement and customer satisfaction, we go above and beyond to exceed expectations and maintain our reputation as the Gold Standard of HVAC.

Geothermal in Smithtown, Islip, Southampton

Air Conditioning Repair

We provide 24/7 service through W&G Service Company

Our service vans are stocked with parts to respond quickly to your needs. Weber & Grahn ensures your satisfaction, no matter the issue or time. Our experienced technicians are NATE-certified and receive ongoing training to stay updated on emerging technologies and can perform warranty services and maintenance on various equipment models.

As an authorized warranty service provider for major manufacturers, W&G Service can handle all your warranty needs, even if we didn’t install the equipment.

Weber & Grahn is a Warranty Service Provider for:


When your problem can’t wait, W&G Service is available 24/7/365.

Our off-hours dispatcher places you in touch with our skilled technicians to address your specific emergency service needs with the utmost courtesy, and expediency.

Air Conditioning Replacement

Repair or Replace?

Since 1968, homeowners have chosen Weber & Grahn to replace their air conditioning systems. Our clients trust us because we have earned their trust while maintaining and repairing their systems with precision and integrity. We take pride in always doing the right thing, even when no one is watching. That’s what sets us apart at Weber & Grahn.

When a system starts to show signs of aging like frequent breakdowns or poor performance, the main question is whether to repair or replace it. If a system is failing, it’s likely to keep breaking down. Instead of spending money on more repairs, it’s best to consider replacing the unit. New high-efficiency equipment can cut your energy bills by more than half. Keeping the old system could end up costing you more than you think.


Before installing your new air conditioning and heating system, we ensure it will keep you comfortable. We explain our recommendation thoroughly, addressing any questions or concerns you may have. We guide you through the process, so you know what to expect. If you prefer, we can handle everything from selecting the system to installation. Either way, you’ll be comfortable even before the job is done.

Why Choose Weber & Grahn?

At Weber & Grahn, we believe in providing a comfortable indoor environment for your family with precision, professionalism, and integrity.

We handle tasks like designing and installing HVAC systems for new construction, installing wine systems, and repairing existing systems. We aim for excellence in every job because our reputation relies on it. Your satisfaction is how we measure our success.


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The Comfort of Knowing

Weber & Grahn

Ready To Get Started?

If you need a new system installed or an existing unit serviced, call us today!