William C. Diamond Plumbing and Heating

William C. Diamond Plumbing and Heating We are a full service plumbing, heating and drain cleaning company. We service Morris, Sussex & Essex counties.

We are a full service plumbing, heating, air conditioning and drain cleaning company.

Great review from Henrietta... "Bill Diamond and the terrific folks working for his company have helped me and my family...
06/16/2026

Great review from Henrietta... "Bill Diamond and the terrific folks working for his company have helped me and my family for decades. I am so grateful to have a company I trust that I can call and someone well trained, honest, professional, and kind will come to solve whatever issue comes up. Kevin came a few days ago….on time, did a beautiful job, and handled everything that needed to be handled with a warm, friendly smile. Thank you so much! Suzanne Montie"

"Bill Diamond and the terrific folks working for his company have helped me and my family for decades. I am so grateful to have a company I trust that I can call and someone well trained, honest, professional, and kind will come to solve whatever issue comes up. Kevin came a few days ago….on time,...

Great review from Dylan
06/13/2026

Great review from Dylan

Check out our great customer reviews!

Great review from Adam... "Rob is a great tech. Helped fix not only the sink, but repaired a pipe that was cracked."
06/12/2026

Great review from Adam... "Rob is a great tech. Helped fix not only the sink, but repaired a pipe that was cracked."

"Rob is a great tech. Helped fix not only the sink, but repaired a pipe that was cracked."

Great review from Bob... "Rob came to my house less than 24 hrs after I called on a Sunday night to report my water heat...
06/09/2026

Great review from Bob... "Rob came to my house less than 24 hrs after I called on a Sunday night to report my water heater was leaking. The job was completed efficiently & expertly, and I had hot water running within a 1/2 hour of completion of the job."

"Rob came to my house less than 24 hrs after I called on a Sunday night to report my water heater was leaking. The job was completed efficiently & expertly, and I had hot water running within a 1/2 hour of completion of the job."

Great review from S L... "Scheduling a service call was easy with Kim at the office. Robert B came to replace a leaking...
06/09/2026

Great review from S L... "Scheduling a service call was easy with Kim at the office. Robert B came to replace a leaking shut off valve to an outdoor spigot. He was friendly, knowledgeable and efficient. He answered a few questions and explained how he intended to repair the leaking valve and provided tips on winterizing the pipes. Confident that the fix took care of the problem. A well organized and professional plumbing company!"

"Scheduling a service call was easy with Kim at the office. Robert B came to replace a leaking shut off valve to an outdoor spigot. He was friendly, knowledgeable and efficient. He answered a few questions and explained how he intended to repair the leaking valve and provided tips on winterizing the...

Great review from Scott... "I just had a water leak in my house and because of DiamondPlumbing's incredibly quick respon...
06/05/2026

Great review from Scott... "I just had a water leak in my house and because of Diamond
Plumbing's incredibly quick response I avoided major damage."

"I just had a water leak in my house and because of Diamond Plumbing's incredibly quick response I avoided major damage."

Great review from fran... "Excellent work and customer service. Very knowledgeable and honest. Highly recommend"
05/27/2026

Great review from fran... "Excellent work and customer service. Very knowledgeable and honest. Highly recommend"

"Excellent work and customer service. Very knowledgeable and honest. Highly recommend"

Great review from Walter
05/24/2026

Great review from Walter

Check out our great customer reviews!

Great review from Edward... "Kevin came in a flash. Was very friendly. Fixed the problem and answered a few questio...
05/13/2026

Great review from Edward... "Kevin came in a flash. Was very friendly. Fixed the problem and answered a few questions I had pertaining to the job. Very satisfied. Would recommend company to all my friends. Thanks"

"Kevin came in a flash. Was very friendly. Fixed the problem and answered a few questions I had pertaining to the job. Very satisfied. Would recommend company to all my friends. Thanks"

Great review from Paul... "Great job by Kevin today installing a utility sink. Also good to see Bill D who stopped by to...
05/13/2026

Great review from Paul... "Great job by Kevin today installing a utility sink. Also good to see Bill D who stopped by to assist."

"Great job by Kevin today installing a utility sink. Also good to see Bill D who stopped by to assist."

Address

34 Deforest Avenue
East Hanover, NJ
07936

Opening Hours

Monday 7am - 6pm
Tuesday 7am - 6pm
Wednesday 7am - 6pm
Thursday 7am - 6pm
Friday 7am - 6pm

Website

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