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Flat Panel Installation - Monsey, N.Y.

Keystone Mechanical:

Keystone Mechanical is the parent company of Solar USA. Keystone has provided over 50 years of engineering HVAC experience to commercial and residential buildings.

Solar USA:                                                                                                                                                                                Solar USA, LLC, is based in Long Island City, New York. We provide hot water solutions for commercial, industrial and multi-family residential homes and apartments. The company has a specialist for each client from start to finish.

Our engineers have over 30 years of experience in the alternative energy sector, working with geo-thermal energy sources, tankless hot water heaters, wind energy, and green roof technology. When it comes to energy independence, we are the experts.

For more on Keystone Mechanical, please visit KeystoneMechanical.net. David Hazan, Keystone's Senior Development Engineer, may be reached at (718) 706-7630.

Learn about your solar options. Call our main office today.

Main Office: 718-784-4239

Office Hours:

Monday through Friday: 8:00 A.M - 6:00 P.M.


Keystone Mechanical
3418 Northern Boulevard
Long Island City, NY 11106


David Hazan, Senior Development Engineer

Sid Sanders, Chief Operations Officer