Weber & Grahn Air Conditioning and Heating

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About Weber & Grahn Air Conditioning and Heating
Weber & Grahn Air Conditioning and Heating holds a 4.1-star rating across 36 verified customer reviews, serving residential clients throughout Hampton Bays, East Hampton, Southampton, Sag Harbor, Riverhead, Westhampton, and the broader Hamptons region. Operating since 1968, this contractor maintains New York state mechanical licenses 36162-MP and 38242-ME, qualifying them for both piping and electrical HVAC work. The company offers 24/7 emergency service with standard hours Monday through Friday 7:30 AM to 5 PM and Saturday 8 AM to 4 PM.
What distinguishes Weber & Grahn is their breadth of specialized expertise beyond standard residential heating and cooling. The company designs and installs geothermal systems and handles indoor pool dehumidification projects requiring complex architectural integration. They serve as warranty service providers for major manufacturers and offer smart thermostat integration, indoor air quality solutions, wine room refrigeration, and ductless mini-split installations. Their preventative maintenance programs aim to catch system failures before they occur, and they provide gas heating conversions for homeowners upgrading from older systems.
Customer reviews highlight specific technicians who handled urgent situations. One reviewer described how Nicole at the office expedited a same-day emergency visit for a new customer, dispatching technician Josh by 4:30 PM the same day the call came at 10 AM during a July heat wave. Another client praised technician Justin for diagnostic accuracy and refusing to recommend unnecessary parts, noting the team verifies everything is correct before leaving a residence.
What Customers Say
Across 36 reviews, customers consistently praise the company's responsiveness and honesty. Josh and Justin are specifically named for their technical skill, while Nicole receives recognition for customer service. Four reviewers mention emergency same-day or after-hours service. Negative feedback centers on occasional inconsistent service quality between technicians, while positive reviews emphasize trustworthiness and thoroughness.
Working Hours
| Sunday | Closed |
| Monday | 7:30 AM–5 PM |
| Tuesday | 7:30 AM–5 PM |
| Wednesday | 7:30 AM–5 PM |
| ThursdayToday | 7:30 AM–5 PM |
| Friday | 7:30 AM–5 PM |
| Saturday | 8 AM–4 PM |
Services
Air Conditioning Installation & Repair
Complete AC installation, tune-ups, and repairs for residential systems across the East End.
Heating Solutions
Furnace and boiler services including gas heating repairs, replacements, and conversions.
Geothermal Systems
Design and installation of geothermal heating and cooling systems for residential applications.
Ductless Mini-Split Systems
Installation of ductless mini-split heat pumps for zoned temperature control.
Indoor Air Quality
Solutions to improve air filtration, ventilation, and overall home air quality.
Smart Thermostat Installation
Integration of smart thermostats for remote system control and efficiency optimization.
Wine Room Refrigeration
Specialized refrigeration installation for residential wine storage rooms.
Preventative Maintenance Plans
Scheduled service agreements to maintain system efficiency and prevent unexpected failures.