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Ralph p. sita, inc.

residential & commercial
Heating, VENTILATION, & Air conditioning


Family owned and operated for over 42 years!




Duct work


Carrier Heat Pump

We've got over 41 years of experience to help you determine how to tackle all of your heating  concerns. Our expert technicians can help you determine the system that will best fit your particular needs. In addition, because we offer a wide range of  exceptional brand named equipment, we are able to offer several, reliable and affordable, heating options.

We've got several options to help with all of your commercial and residential air ventilation needs.

We specialize in custom duct work systems and also offer air duct cleaning to ensure your system is operating as efficient and effective as possible

We've got a number of different options to help you with all of your cooling needs. From preventative maintenance services, to repairs and new installations, we've got you covered. Summer is right around the corner! Call to schedule your preventative maintenance service today! 

get a free quote today!

Call Us Today: (301) 855-9387
or Click the Link Below and We'll Get Back to You with a Quote

“Excellent service as always, Ricky and Eddie are true professionals and highly knowledgable and easy to work with. In a time of dwindling services and customer service, they are such a breath of fresh air! Thank you for all you do for your clients and the high quality service you provide.”

Valerie Itteilag,  Washington, DC
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