(631) 689-3702


  • Leaky Pipes Repaired
  • Bathroom/Kitchen Remodeling


  • Gas Burner/Water Heater Services
  • Gas Conversions


  • Hot Water/Hot Air Systems
  • Radiant Heating


  • Oil Burner Installations/Repairs
  • Hydronic Heat Systems
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Air Conditioning / Ventilation

  • AC System Installations/Repairs
  • Compressor Repairs/Replacement

Sewer & Drain

  • Clogged Lines Electrically Cleared
  • Video Pipe Inspections

Residential Plumbing, Commercial Plumbing, New Construction

What our clients are saying

Just completed my oil to gas heating conversion including removal of old oil tank and install new gas system and indirect Hot Water Heater.

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Frank and his team were super professional, walked me through the process with national grid, and ensured I would select the right equipment and obtain the maximum rebates I was entitled to. Neat, professional, always easy to contact returning calls quickly and working around my schedule. Great quality work and a pleasure to deal with. I would highly reccomend them for all your plumbing, heating and related needs. No bull or haggling. Straight honest work, top quality, and a pleasure to deal with.

This company just installed a oil fired heating and air conditioning system and did a spectacular job. Mr. Mcintosh was on site and a pleasure to deal with.

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They cleaned up after the install and exceeded our expectations. The job was completed ahead of schedule and is working great. I would highly recommend this company.

Went on vacation for a week and gave Frank the keys. When we got back we had a new oil burner, ac unit, above ground tank

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and the underground tank had been drained and filled to code. We even got half a tank of oil in our new tank when they pumped out the underground one. And, no oil stains anywhere and they removed all the old equipment. What more could we ask.

Frank and his team did my kitchen, 2 bathrooms, heating and a/c over. He took his time and did the jobs right the first time.

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He gave me the best and right price. I will and all ready have recommend him to my fiamly and friends. Thanks to Mcintosh plumbing i will have no worries about my plumbing and heating system.

Does a great job and excellent prices. Installed a new boiler and hot water heater for me at much less then other plumbers I called.

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He was here on time, cleaned up after the job was done and I have not had any problems with the boiler or hot water heater and its been about a year.

I recently had my gas heating system repaired by McIntosh Plumbing. They repaired it the same day and at a fair price.

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They were on time and had the repair parts on the truck. I would definitely recommend this company.

No matter where the problem is,

McIntosh Plumbing & Heating can handle it!

Local Plumber Setauket- East Setauket NY


Here are a few of the repairs McIntosh Plumbing & Heating handles;

  • Repair broken/leaky plastic, copper and cast-iron pipes and fittings

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McIntosh Plumbing & Heating has successfully installed full systems from a long list of heating, air conditioning and hot water heater manufacturers.

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Prolong the life of your systems by scheduling regular heating system tune-ups and cooling system maintenance. Our technicians are trained on all types of systems, even the few we don’t install.

A few words from Frank McIntosh

I believe it’s our attention to detail and our customer service that sets us apart from our competition.
From a complete heating system to a faucet install, only the highest quality materials are used and our trained technicians know how to get the job done right.
All our work is backed up by a 1 year guarantee and the price we quote is the price you pay.
Frank McIntosh

Owner, McIntosh Plumbing & Heating

Customer Reviews

Serving Suffolk County

Including the towns of Babylon, Brookhaven, East Hampton, Huntington, Islip, Riverhead, Smithtown and Southampton


Residential Services


Boilers and Furnaces


Radient Heat Specialists


Commercial Services


Coolers & Air Conditioners


Gas Conversions


New Construction


Hot Water Heaters


Bathroom remodeling

For Faster Service

Call or text us at (631) 786-6954

☎ Office:
(631) 689-3702

Serving Suffolk County since 1991

Master Plumber | HVAC | Restricted Electrical | Licenses Available Upon Request

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