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50+ Years
experience
Emergency
services
Your Trusted Plumbing & Heating Experts in Lowell, MA
Welch Brothers has been a trusted provider of plumbing and heating solutions in the Merrimack Valley since 1904. Our team of skilled technicians delivers comprehensive services for residential and commercial clients, specializing in boiler and water heater installations, emergency repairs, and energy-efficient upgrades. With over a century of experience, we prioritize reliability, technical expertise, and customer satisfaction. Our commitment to quality extends to fuel conversions, tankless water heaters, and repiping projects, ensuring long-term value for our clients.

We operate with transparency, offering free estimates and 24/7 emergency support. Our licensed professionals handle everything from minor leaks to full-scale remodels, using durable materials like Viega PEX piping. As a locally owned business, we understand the unique needs of the Greater Lowell area and strive to maintain our reputation for excellence through personalized service and proven solutions.
Services
Plumbing Repairs Heating Systems Fuel Conversions Tankless Water Heaters Drain Cleaning Boiler Installations Emergency Services Repiping Remodeling Gas Piping
Details
  • Year established: 1904
Highlights and features
  • We offer 24/7 emergency plumbing and heating services.
  • We specialize in high-efficiency boiler and water heater installations.
  • We serve both residential and commercial clients in the Merrimack Valley.
  • We provide free estimates for all plumbing and heating projects.
  • We use durable materials like Viega PEX piping for long-term reliability.
Services
Plumbing Repairs
Our team addresses leaks, clogs, and pressure issues in residential and commercial plumbing systems. We repair fixtures, water lines, and drainage networks using corrosion-resistant materials. Emergency services are available for urgent leaks or flooding situations.
Heating Systems
We install, repair, and maintain boilers, furnaces, and radiant heating systems. Our technicians specialize in steam systems and high-efficiency upgrades. Preventive maintenance plans help reduce energy costs and extend equipment lifespan.
Fuel Conversions
We convert heating systems from oil or electric to natural gas. This service reduces energy costs by up to 70% while improving system reliability. We handle permits, piping, and safety inspections for seamless transitions.
Tankless Water Heaters
We install energy-efficient tankless water heaters that provide continuous hot water. These systems reduce utility bills by eliminating standby heat loss. Our technicians ensure proper sizing and integration with existing plumbing.
Emergency Services
We offer after-hours emergency support for plumbing and heating failures. Our team responds promptly to leaks, frozen pipes, and heating outages. Service is available nights, weekends, and holidays to minimize property damage.
Questions
What areas do you serve?
We serve the Merrimack Valley, including Lowell, Chelmsford, and surrounding Massachusetts communities.
Do you offer emergency services?
Yes, we provide 24/7 emergency plumbing and heating repairs for urgent situations.
What payment methods do you accept?
We accept Visa, Mastercard, and Discover credit cards for all services.
Are financing options available?
Currently, we do not offer in-house financing but can discuss payment plans for large projects.
What services require free estimates?
All plumbing, heating, and fuel conversion projects qualify for free, no-obligation estimates.
Reviews (2)
Nicolas Charbonnier
Dec 21, 2017 Report
Pretty expensive but the job is done right! The changed my outside faucet for $480.00 $59.00 for the call out fee $28/15min for labor Each scree is charged.
Tien Le
Feb 10, 2017 Report
Called welch brother to fix a leaking steam radiator and they sent a guy over and within a minute he said he cannot fix it. I was charged a total of $87 dollars just for him to show according to their business model (he was there for less than 10 minutes). I would advise anyone to search around before calling these guys. Personally, I don't recommend Welch Brothers to anyone. Lesson learned.