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The Steam Heating Professionals

Welcome to GS Dunham, the New York Metropolitan Area’s Manufacture’s Representative for Mepco, Vent-Rite, Vari-Vac and Elge products. Backed by a service department with over 100  years of cumulative experience, our customer service and complete system knowledge is unmatched in the industry. We combine quality engineered equipment, with technical experience to install, service and maintain steam heating systems at peak efficiency.

We are your one stop source for all things S T E A M.

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Our Parts Come With Experience
G.S. Dunham is your expert resource for steam heating systems and equipment. Our well rounded staff with decades of experience provide sales, service and support.
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The Right Products For Every Job
Manufacturer’s Representative for MEPCO, ELGE, Vari-Vac, and Vent-Rite products and equipment.
Our Products
A Practical Approach
We take a whole system approach with proven innovative ability to solve both common and uncommon problems.
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Complete Inventory
Specializing in Vari-Vac Controls including our new Altitude One IOT Vari-Vac Control , Vacuum, Condensate, Boiler Feed and POT Pumps, TRV’s, Adjustable Orifice TRV's, Adjustable Orifice Radiator Valves, Orifice Plates, Heat Exchangers, Condensate Recovery Exchangers and Steam Traps.
Our Products
Service, Installations, Modernizations, Retrofits
We do it all.
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Efficiency and Comfort Work Hand in Hand
The Vari-Vac System approach is proven by of years of engineering. We combine quality equipment, applying our knowledge to solve problems and optimize heating system efficiency and comfort.
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What Our Customers Say

We experienced an emergency heat outage and G.S. Dunham responded without hesitation. Their team was attentive, professional, and incredibly helpful in getting our vacuum pump and Vari-Vac steam distribution system back up and running. Their quick action and expertise made all the difference.
Jordan Siegel, P.E.TF Cornerstone
We've been using G.S. Dunham for over 30 years. Their consistent quality and dedication to service has made them essential to our operations. Their expertise in steam heating systems is unmatched. Their responsiveness during emergencies has given me and my team peace of mind knowing we have G.S. Dunham in our corner. We truly value the relationship we've built
Jorge Almonte, Facilities ManagerBridge Towers NYC
Their work is precise, their responsiveness is unmatched, and their integrity is something you don’t find every day. I don’t have time for excuses or guesswork—I need real solutions, real expertise, and people who care about the outcome. That’s what G.S. Dunham delivers every time.
Irfan Blambic, Resident ManagerMorningside Heights Housing Corp.
Their maintenance services keep our systems running without a hitch. I trust GS Dunham completely for all my steam heating needs.
Mark JohnsonFacility Manager

Get in Touch with Us

If you have questions or need assistance, we’re here to help. Reach out for more information about our steam heating products and services. Let’s make your heating solutions easy and effective.

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We're Here to Help

For Immediate Assistance Call

718-886-4232

[email protected]

Contact Us

We're Here to Help

For Immediate Assistance Call

718-886-4232

[email protected]

Contact Us

We're Here to Help, Anytime

Whether it’s a middle-of-the-night emergency or a replacement part you just can’t find, we’re here to help. Fill out this form and someone will be in touch with you ASAP.

For Immediate Assistance Call

718-886-4232

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