Commercial Plumbing & Gas Services | Seacoast to Lakes Region, NH

At Donovan Plumbing & Heating, we specialize in commercial plumbing, heating, and gas services across New Hampshire. From restaurant kitchens to office buildings and commercial bathrooms, we provide reliable, code-compliant solutions designed to keep your business running smoothly.

We understand that downtime costs money. That’s why our approach is built around fast response, clear communication, and dependable workmanship. From high-demand kitchens to multi-unit buildings, we deliver plumbing systems that are built to perform under pressure.