Family owned and operated since 1948

Duncan’s Contracting

Known first and foremost for our affordable and trustworthy service

With over 30 years of experience, Duncan’s Contracting has been serving Long Island, New York with superior residential and commercial plumbing services. From the smallest drips to full-service repair and update solutions, Duncan’s Contracting covers it all.

We offer the latest in plumbing technology and your welfare and safety is paramount to our fully licensed and insured crew.

Contact us to learn more about our services or to schedule your next service appointment.

Family owned and operated since 1948


We’ll stop the drips with out draining your pocket!


Keeping Long Island warm and toasty since 1948

Air Conditioning

Chill, we got it!

Helpful tips

  • Run your dishwasher and washing machine at night or at off times to conserve water temperature and pressure.
  • Make sure that all drains have strainers to prevent hair, soap and debris from clogging the drain lines.
  • Make sure yard drains, gutters and downspouts are cleaned out, open, and free of debris.
  • Never flush cotton swabs, cotton balls, hair, facial scrub pads, diapers, sanitary products or similar items down the toilet. These items will not easily dissolve and are responsible for most clogs.
  • Check the temperature setting on the water heater. It should be set no higher than 120°F to prevent scalding and reduce energy use.

Tips from: Walter “Kirk” Durance of Durance Plumbing.

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DUNCAN’S CONTRACTING, llc • 631-941-4564
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