JDM #1 Plumbing is owned and operated in Smyrna, Delaware, servicing all of Delaware as well as nearby communities of Maryland and Pennsylvania. JDM #1 Plumbing offers residential and commercial plumbing services. JDM # 1 Plumbing has extensive experience in service work, new construction (both residential and commercial) and has joined the "green" revolution by becoming a leading installer in Delaware of tankless water heater systems. JDM #1 Plumbing has experienced success based on our reputation of Prompt, Professional, and Clean employees that provide superior service to our customers.

JDM #1 Plumbing, the leading installer in the state of Delaware of the Noritz tankless water heaters, is ready to meet all of your plumbing needs. We proudly serve the businesses and residents in communities within Delaware, Northeastern Maryland, and Southeastern Pennsylvania.

JDM #1 Plumbing are a leading installer in the state of Delaware of the Noritz tankless water heater. By heating water only when you need it, ENERGY STAR qualified tankless water heaters save the typical family more than $100 per year on gas bills compared to a standard storage model. Larger families can save even more! Since there is no stored hot water that requires constant reheating like traditional tank systems, you can save up to 40% of your current water heating bill.* The ability to use less-expensive PVC venting, flexible installation options and superior construction quality makes Noritz the industry leader for value & durability.

JDM #1 Plumbing did a great job repairing my mother-in-law's leaking pipes. She was very impressed by their skill and professionalism, and they were affordable!

What's new?

Big shout out to Frankie's Pop Shop! Since it is the weekend of LOVE, we wanted our guys to know how much we LOVE them, so we gave them each a bouquet of Cake Pops. They were delicious! Happy Valentines Day!

Posted on Feb 13, 2021  •  Facebook

Thanks Pat for the nice Review and for allowing the JDM #1 team to get the job done!

Posted on Feb 11, 2021  •  Facebook

Wow! Learned something new today! The flushable toilet has been around for well over 400 years, invented in 1596! The dates of the modern shower (1767) and water heater (1889) suggests there was likely some really cold showers for over 100 years. Thankful for all the innovations since then such.

Posted on Feb 11, 2021  •  Facebook

We have the greatest mafia around!

Posted on Feb 08, 2021  •  Facebook

Check out these before and after pictures! The 1st picture is the pipe/fitting on the inlet side of a 12yo water treatment system while the 2nd photo is the pipe/fitting after. wow!

Posted on Feb 05, 2021  •  Facebook

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