William C Diamond Plumbing and Heating

William C Diamond Plumbing and Heating serves residential and commercial clients across East Hanover, Livingston, and Morris County, New Jersey. The company holds a 4.9-star rating from 520 reviews, reflecting consistent customer satisfaction. Operating Monday through Friday from 7 AM to 4 PM, the business handles projects ranging from routine maintenance to complex installations. The team operates from 34 Deforest Avenue in East Hanover, providing plumbing, heating, and water treatment services throughout Northern New Jersey communities.

The company distinguishes itself through comprehensive expertise in both plumbing and heating systems, including oil-to-gas conversions, boiler installations, and radiant heating. Their service menu includes specialized offerings such as tankless water heater installation, water softener systems, and sewer line replacements. The business emphasizes transparent communication and precise service delivery, ensuring customers understand their options before work begins. This approach supports their commitment to long-term customer relationships and code-compliant installations.

Customer reviews highlight specific positive experiences with team members. Kevin arrived on time and completed a job with a friendly, professional demeanor. When Rebecca Marasco contacted the company, Kim in the office returned her call within an hour, and technician William arrived quickly, provided a clear quote, and completed the repair. Charles Costello described receiving a quote within 90 minutes of his initial call, with Bill Diamond personally overseeing a boiler installation the following day alongside a two-person crew.