Diamond Plumbing Heating and Cooling

Diamond Plumbing Heating and Cooling has served the Milwaukee metro area for over two decades, building a reputation as a trusted residential service provider since the early 2000s. The company holds a strong 4.7-star rating from 174 customer reviews, reflecting consistent quality across both plumbing and HVAC work. Operating with 24-hour availability every day of the week, the team handles everything from routine maintenance to emergency calls throughout Milwaukee and surrounding communities including Wauwatosa, West Allis, and Greenfield. Owner Julian leads a team that has earned recognition as Voted #1 in Metro Milwaukee, with credentials tied to Plumbers Local 75 and a background dating back to 2003.

The WIN WIN pricing model sets this contractor apart by allowing customers to select their preferred level of service quality, a transparent approach uncommon in the trade. They offer full-service capabilities spanning both plumbing and heating/cooling systems, including water heater installation, furnace and boiler service, air conditioning repair, and rooftop unit maintenance. Their financing options and same-day service guarantee (available after pre-paid assessment fee) provide flexibility for homeowners facing unexpected breakdowns. The company also handles permit acquisition and code compliance work, serving as a one-resource solution for larger renovation projects.

Customer stories reveal Julian's hands-on approach across specific scenarios: one reviewer described a Saturday morning call for a rusted-through basement drain pipe where Julian arrived early, completed the repair himself, and saved the landlord from a complex DIY attempt. Another customer recounted how Julian personally returned to finish a delayed job, identifying and resolving an odor source in bathroom sink pipes before following up days later to confirm the problem did not recur. A third reviewer noted Julian arrived at 7:55 pm for a 9:30 pm scheduled call, nearly two hours early, to address two clogged toilets, completing the work in under an hour while providing preventive maintenance tips.