ℹ️ This listing has not been claimed by the business owner. Information shown
is compiled from public records and may not be current.
Claim this listing to update your business information.
Webber Grahn demonstrates strong response times and technician knowledge, with multiple reviewers praising quick emergency service, accurate diagnostics, and professional repairs across HVAC systems. However, consistency issues emerge across some accounts, with concerns about incomplete work on first visits, inadequate technician preparation, and organizational inefficiencies that occasionally require follow-up appointments to address missed tasks.
Based on Google reviews
About the Contractor
Weber & Grahn has served the East End of Long Island from Hampton Bays since October 1968, holding a reputation as the premier HVAC and geothermal contractor across East Hampton, Southampton, Westhampton, Riverhead, and Sag Harbor. The company began designing and installing geothermal heat pump systems in 1985 using FHP/Bosch equipment, making it one of the region's longest-standing geothermal specialists. NATE-certified technicians handle geothermal heat pump installations, repairs, and Geothermal Warranty Service for most manufacturers. Weber & Grahn is WaterFurnace dealer and also installs Mitsubishi ductless systems and custom HVAC for high-end architectural projects. The firm holds Master Plumber licence 36162-MP and Master Electrician licence 38242-ME, and offers 24/7 emergency service across eastern Long Island. Licensed, fully insured, bilingual support available.
Specializes in ground-source heat pump installations across eastern Long Island with expertise in the South Fork's unique climate demands for year-round heating and cooling.
Geothermal heat pump installations in New York require specific permits and compliance with state regulations regarding well drilling, loop installation, and refrigerant handling. Contact your local building department for specific requirements in your area.
Weber & Grahn installs ground-source heat pump systems that take advantage of stable earth temperatures for year-round comfort in Hampton Bays and eastern Long Island.
Geothermal installations by Weber & Grahn lower monthly energy expenses by reducing dependency on traditional fossil fuels while providing reliable heating during winter and efficient cooling in summer.
Weber & Grahn serves communities throughout eastern Long Island, including Hampton Bays and the South Fork area, where homeowners increasingly choose geothermal systems for their environmental benefits and superior efficiency.
Weber & Grahn geothermal projects are designed to deliver dependable performance for decades.
Own this business?
Claim this listing to update services, pricing, and respond to quote requests.
Our team reviews your request before sending it to Weber & Grahn. If they can help, they will contact you directly.
✓
Quote Request Received
Thanks — we'll review your request and forward it to Weber & Grahn within 1 business day. If you asked to compare quotes, we'll pass it to up to two more local installers as well. They typically respond within 1–2 business days after that.
If you need to reach Weber & Grahn directly: (631) 728-1166
Geothermal heat pump installations in New York may require drilling permits, environmental site assessments, and compliance with local well and thermal energy regulations. Requirements vary by jurisdiction and system type (vertical, horizontal, open-loop). Contact your local municipality, state energy office, or a licensed geothermal installer for specific permitting requirements in your area.