Family Owned. Quality Craftsmanship. Recommendations You Can Trust.
We recommend only the work you truly need. We deliver clean, code-compliant craftsmanship at a fair price. Try us out!
Our Services
Plumbing Services
From everyday repairs to complete system installations, Overflow Plumbing Co. provides reliable and honest plumbing, heating, and cooling solutions you can trust, including emergency services when you need them most. We expertly handle plumbing repairs and troubleshooting, leaks and clogs, drain cleaning, fixture installations, kitchen and bathroom plumbing, piping repairs and replacements, water treatment, and both tank and tankless water heaters. Our heating and cooling services include boilers, furnaces, mini-splits, air conditioning, and hydronic heating systems to keep your home comfortable year-round. Our goal is simple, quality workmanship, clear communication, honest recommendations, and jobs done right.
Heating Services
Stay warm, comfortable, and efficient with dependable heating services from Overflow Plumbing Co. From emergency no heat calls to complete system replacements, we provide professional heating solutions you can count on. Our services include boiler and furnace installation and replacement, heating system repairs and maintenance, diagnostics and troubleshooting, circulator and zone repairs, controls, and efficiency upgrades. Whether you need a quick repair or a complete heating system upgrade, our focus is quality workmanship, clear communication, and keeping your home comfortable when it matters most.
Mini-Split Services
Whether you’re upgrading your home’s comfort or adding heating and cooling to a new space, Overflow Plumbing Co. provides professional heat pump and ductless mini-split installation, replacement, repair, and maintenance. We offer energy-efficient comfort solutions for homes, additions, garages, finished basements, remodels, and select light commercial spaces. From system design and equipment selection to professional installation, startup, and ongoing service, our goal is simple, quality workmanship, honest recommendations, and reliable year round comfort.
New Construction & Installs
Bring your project to life with professional plumbing from Overflow Plumbing Co. We work with homeowners, builders, and contractors on renovations, additions, new construction, and select light commercial projects. Our team handles everything from water and drainage piping to kitchens, bathrooms, fixture installations, and plumbing system upgrades. With careful planning, dependable workmanship, and attention to the details that matter, we make sure your plumbing is installed properly and ready to serve you for years to come.
Emergency Calls
When unexpected issues arise, Overflow Plumbing Co. is your go-to for emergency plumbing services. Whether you’re dealing with burst pipes, major leaks, or a lack of hot water, our team is quick to respond to flooding and urgent heating services. We ensure your home is safe and functioning again with honest communication, professional service, and trustworthy solutions when you need them most.
Meet Our Team!
Mitch - Our Master Plumber
Christopher - Our Business Developer
Christopher - Our Business Developer
Mitch Coy is a co-owner of Overflow Plumbing Co. and a New Hampshire–licensed Master Plumber with gas certification. Mitch started his Plumbing career when he was 18 years old and has been at it for nearly 10 years experience in residential and commercial plumbing, heating, and gas, Mitch brings both technical excellence and steady leadership to every job.
Christopher - Our Business Developer
Christopher - Our Business Developer
Christopher - Our Business Developer
Christopher Daigle is a co-owner of Overflow Plumbing Co. and leads operations and customer experience. He oversees scheduling, communication, and project coordination, ensuring each job runs smoothly and every customer feels informed and taken care of. Christopher partners closely with the Master Plumber on every project to deliver honest service and quality workmanship.
Ashleigh - Our Office Admin
Christopher - Our Business Developer
Ashleigh - Our Office Admin
Ashleigh Coy is the wife of Mitch and mother of their three children—and the organizational backbone of Overflow Plumbing Co. Without her, the schedule would fall apart. She manages scheduling, coordination, and communication, making sure customers are taken care of and jobs stay on track. Ashleigh keeps the team organized, directs the da
Ashleigh Coy is the wife of Mitch and mother of their three children—and the organizational backbone of Overflow Plumbing Co. Without her, the schedule would fall apart. She manages scheduling, coordination, and communication, making sure customers are taken care of and jobs stay on track. Ashleigh keeps the team organized, directs the day-to-day flow, and yes, keeps her brother Christopher in line too.