Our business hours are 24 hours service. More about us: we work by the job not the hour, better - cleaner faster and residential & commercial. Our products and services include 24 hour emergency service, 24 hour emergency service*, air conditioning, air conditioning & gas svc, boilers, cleaner, commercial services, gas, gas appliances, gas heaters, gas heating, gas systems, installations, plumbing, plumbing gas heating air conditioning, radiant heat, radiant heating, residential & commercial, residential - commercial, residential services, sales, service, serving nassau, ventilation systems and water heaters. We specialize in commercial equipment, cooling, gas appliances and heating. Accepted forms of payment are american express and visa. We prefer to use these brands: air conditioning and lennox. Our certifications include an osi affiliate.

Visit Website: www.osi-ny.com

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