The following professionals are members of LI-GEO

Please click on a category to find:
Installation & Service Professionals
Installation & Service Professionals
Accelerated Services, Inc.
856 Johnson Avenue, Suite 1
Ronkonkoma, NY 11779

Accelerated Services is a Heating and Cooling Company committed to providing the highest quality and integrity to its customers. We are dedicated to providing reliable, competent, honest sales, service and preventative maintenance to Long Island. Whether you are in need of a service call for your heating and cooling equipment or need a new installation, our experienced team is here to assist you in all of your commercial or residential comfort needs.

Air Ideal

Air Ideal, Inc.
51 Windsor Avenue
Mineola, NY 11501

AIR IDEAL, INC. is a full service HVAC contractor established in 1927. We service and install both conventional and geothermal heating and cooling equipment in commercial and residential applications. Our service territory is Nassau, Suffolk, Manhattan, Queens, Brooklyn, the Bronx and lower Westchester. Over 80 years of engineering and design experience make us the right company for your design/build project. We are members of ACCA, ASHRAE and RSES and certified by IGSHPA and NATE.

American Well & Pump

American Well & Pump
21 Prince St
Farmingdale, NY 11735


Apollo HVAC Corp.
225 North Fehrway
Bay Shore, NY 11706
Associated Environmental Services
25 Central Ave
Hauppauge, NY 11788

Delta Well and Pump

Delta Well & Pump Co Inc.
97 Union Avenue
Ronkonkoma, NY 11779

In addition to all types of groundwater and environmental drilling, Delta Well & Pump Co. Inc. specializes in the construction of large scale residential and industrial open loop supply and diffusion wells. Our well maintenance division excels in rehabilitation of poorly performing open loop diffusion wells.


Dynaire Corporation
134 Herricks Road
Mineola, NY 11501
Dynaire is a full service HVAC mechanical contractor in business 56 years. Projects range from small residential home to large industrial projects. We deal with plan and spec jobs as well having on staff full time engineers for design and build applications. Service area: Long Island, NYC. Certifications: NATE, OSHA.

Earthlinked Logo

Earthlinked Technologies
4151 S Pipkin Road
Lakeland, FL 33811
Established in 1980, EarthLinked Technologies, Inc. is a research and technology company committed to simple, efficient and effective ways to make life easier for people and the planet. The EarthLinked geothermal renewable energy systems not only challenge the status quo in heating and cooling, but alter the way people think about geothermal technology as it currently exists. EarthLinked systems are operating in a variety of applications and climates, saving energy and the environment globally.

Integrated Geothermal

Integrated Geothermal, LLC
410 Sunrise Highway
West Babylon, NY 11704
631-321 7500
Since 2000, we’ve taken a systems approach to commercial spaces and homes throughout New York and New Jersey. We don’t just treat one part of a building’s mechanical system; we look at the building as a whole and integrate the right mix of technology and know-how to maximize energy efficiency and save money for our clients. We’d love to do the same for you. Our team of experts specializes in commercial and residential heating, air conditioning, ventilation, building-automation systems, geothermal, solar photovoltaics (PV) and solar thermal, LED lighting, and much more, all with a focus on sustainability. Using proven, modern technology, and a holistic approach, we will install and maintain a system that is good for the environment and your budget. Learn more about how you can benefit from an Integrated energy-saving solution.

Integrated HVAC

Integrated HVAC Systems & Services Inc.
52 Columbia Street
Islip, NY 11751
631-859 8800

Island Pump & Tank

Island Pump & Tank
40 Doyle Court
East Northport, NY 11731
At Island Pump & Tank Corp we pride ourselves in doing the job right the first time. IPT delivers a high quality service that is cost effective and fulfills your needs. Our office is strategically located in East Northport, NY ready to serve Nassau, Suffolk, and the five boroughs. From Montauk to Manhattan, NJ, CT, and lower Westchester we help you with any environmental problems you may face.
 miller Miller Environmental Group
538 Edwards Ave
Calverton, NY 11933
Miller Environmental Group’s (MEG’s) Geothermal and Alternate Energy installations provide commercial, municipal and residential customers the ability to save on long-term energy bills. MEG’s expertise makes available this clean, modern, and efficient source for climate control that’s as natural as the earth itself. MEG prides itself on constant upgrading of our skills, knowledge and equipment base.With specialized equipment and a certified engineering staff, MEG is the knowledgeable choice for providing customers with the very best in contemporary, value-added heating and cooling technology regardless of building size or design of property. We keep in mind constantly when designing and installing geothermal systems all local regulatory, geological and ecological considerations specific to a job: MEG assures the right design for the right project.


1750 New Highway
Farmingdale, NY 11735
PGI Corporation
PO Box 1236
Melville, NY 11747


Suffolk Systems
200 East 2nd Street
Huntington Station, NY 11746

Our specialty is providing a highly trained, highly skilled, and thoroughly knowledgeable team about all things geothermal. Design, consulting, load calculations, new installations and retrofits for residential and commercial applications. Whatever your needs are, routine maintenance, equipment repair, or a complete geothermal system, our highly trained staff has the expertise to help. Serving Nassau and Suffolk Counties for over 35 years.

ZBF Geothermal

ZBF Geothermal
667 Larkfield Road.
Commack, NY 11725
ZBF Geothermal, LLC is a full service geothermal design, installation and service contractor. Installations and services accounts range from 1,000 square foot houses to large hotel and commercial systems. We have a full time staff of geothermal designers, consultants, installers and service technicians to help you on your next project. ZBF Geothermal is proud to be the largest WaterFurnace Geo-Pro dealer on Long Island.

The Cotocon Group

The Cotocon Group
300 West Old Country Road
Hicksville, NY 11801
The Cotocon Group is a leading source of technical expertise for increasing the efficiency of buildings through better energy management. Our comprehensive services help clients understand their current energy performance, assess the strengths and weaknesses of their portfolios, and then determine and implement feasible solutions to effectively improve energy performance.

loreto logo

Loreto Calcagni & Associates
322 Jericho Turnpike
Floral Park, NY 11001

Next Energy

NextEnergy USA
10 East 40th Street, Suite 1310
New York, NY 10016

PW Grosser

PW Grosser
630 Johnson Avenue, Suite 7
Bohemia, NY 11716

P.W. Grosser Consulting (PWGC) is a full-service civil and environmentaengineering firm specializing in the application of geothermal technology inthe commercial and residential market segments. PWGC has designed anddeveloped a wide variety of geothermal systems ranging in size from smallcommercial sites to area-wide projects for the public and private sector.PWGC’s geothermal services include timely upfront due diligence andfeasibility analysis, filings and planning, cost analysis, field-testingprograms, modeling, design, construction management, system start-up, anddeveloping maintenance programs.

WSP Flak Kurtz

WSP Flack & Kurtz
512 Seventh Avenue
New York, NY 10018
WSP is an engineering consultancy proficient in every aspect of design and construction. We can supply advanced design, energy modeling, computation fluid dynamics calculations and other services. We can design and model commercial spaces from 5,000 SF to an entire campus. In business for 45 years. Service area: all United States. Certifications: PE, LEED AP, BCP, EM, GBE.

Energy Tax Savers

E-Capital Development
323 Merrick Avenue
North Merrick, NY 11566

E-Capital Development, Inc. provides underwriting and brokerage services to originate, insure, and finance sustainable energy projects.

Energy Tax Savers

Energy Tax Savers
144A Jackson Avenue
Syosset, NY 11791
Financial Incentives & Tax Accountants

Grassi and Co

Grassi & Co
50 Jericho Quadrangle
Jericho, NY 11753
Accounting & Business Services
Assurance Services
Business Consulting
Forensic, Litigation & Valuation
Tax Compliance

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Green Choices Consulting
Huntington Station, NY 11746
We work with home, business and commercial property owners to bring more energy efficiency, renewable energy, health and environmental responsibility to existing and new spaces. Our systems-approach gives you the big picture to determine your needs and who can best deliver them. Service area: Northeast US.
Karl Silverberg PC
320 Carleton Ave. Suite 6400
Central Islip, NY 11722

Silverberg P.C. is a law firm focused on serving the construction industry; handling litigation involving construction contract disputes, payment and collection issues, mechanic’s liens, and related matters. Silverberg P.C. is dedicated to providing the highest quality legal services to owners, general contractors, subcontractors and suppliers, as well as architects and engineers.


Air Control Supply

Air Control Supply
1580 Lakeland Avenue
Bohemia, NY 11716
Air Control Supply is a Wholesale HVAC Distributor with its 25,000 sq ft warehouse located at 1580 Lakeland Ave in Bohemia serving installation & Mechanical contractors from Montauk to Manhattan with its own fleet of trucks on a daily basis. We inventory all parts, supplies & equipment for all types of Residential & Commercial installations. We Stock and distribute Central Air Conditioning, Furnaces, Boilers, Radiant heat , all types of Electric heat , Ventilation, kitchen Exhaust fans , HRVs ,, and specialize in the Sale and application of water to water and water to air geothermal Equipment & Supplies from the manufacturers such  as Geocomfort, Climate Master with hundreds of installations throughout the metropolitan area.


The Blake Group
34 Executive Drive
Danbury, CT 06811
Blake Equipment is in the business of Moving, Heating and Treating Water through heat transfer equipment, heat pumps, renewable energy equipment, hydronic components, water systems, pumps, water treatment equipment, controls and instrumentation to Residential, Commercial, Municipal, Institutional, Industrial and Power Generation markets in the Northeast.


Water Furnace
9000 Conversation Way
Fort Wayne, IN 46809
Whales Darby
Wales-Darby, Inc.
2910 Express Drive South
Islandia, New York 11749
For over 40 years Wales-Darby, Inc. has been dedicated to providing the highest caliber of sales, engineering, customer service and training to the HVAC and Plumbing industries.  Founded by Richard Darby, family-owned Wales-Darby has grown to be a leading Manufacturer’s Representative serving the Long Island / NYC Metro / Downstate NY and Northern NJ area.  We represent only quality manufacturers enabling us to offer a complete package of high-efficiency products and systems.  Our staff of over 65 is second to none in our industry providing the service and reliability for which we are known.  Among the services we offer are complete system engineering, application and design assistance; full marketing support and a premier education program that reaches all segments of our market.