Your Trusted Plumbing & HVAC Experts in Merrimack, NH

Enjoy whole-home comfort and peace of mind when you work with the experts at LHR Plumbing and Heating. Call (603) 270-9224 now to schedule an immediate appointment with our Merrimack plumbers and HVAC professionals.

The Best Plumbing Services in Merrimack, NH

Looking for a reliable plumber near you? LHR Plumbing and Heating is your local Merrimack plumbing company committed to helping you resolve your drain and sewer problems quickly and efficiently.

Whether you need to install a new garbage disposal, clear out your drain or sewer line, or replace your old water heater, we have all of your plumbing needs covered.

Reach out today to discuss your specific plumbing needs and we’ll have your problem resolved in no time.

Emergency Plumbing Services

Plumbing problems can happen just as you’re getting ready to have guests over, or when you’re about to head out for work. Fortunately, our team is available to provide 24/7 emergency plumbing services in Merrimack and surrounding areas. Don’t hesitate to contact us for immediate help with overflowing toilets, blocked sewer lines, gas leaks, burst pipes, and other plumbing emergencies.

Water Heater Repair & Replacement

Need to repair or replace your water heater? Contact our experts to find out which solution is more cost-effective. We will provide you with a thorough inspection, identify the source of the problem, and discuss the best solution for your home based on your particular needs and budget. Our experts service and install all water heater makes and models, including tank, tankless, and high-efficiency systems for residential and commercial clients.

Clogged Drain & Toilet Clearing

You shouldn’t have to wait several days to get the problem resolved. When you contact our experts at LHR Plumbing and Heating, expect quick service and quality solutions. Whether you have a minor clog or a larger blockage, we will make sure the drain cleaning process is completed safely and efficiently.

Whole-House Repiping

Homes and buildings that are over fifty years old may begin to show signs of water line deterioration. If you suspect a problem with your water supply line, contact us for an immediate inspection. We will determine the extent of the problem and help you figure out if whole-house repiping is necessary. We offer quick and accurate pipe replacement services throughout Merrimack.

Work With the Leading Merrimack HVAC Contractors

LHR Plumbing and Heating offers full-service HVAC solutions for homeowners and businesses in Merrimack and surrounding areas in southern New Hampshire. Whether you are looking to install a new ductless mini split AC system, tune-up your furnace, or replace your boiler, we’re prepared to help you enjoy greater indoor comfort no matter the season.

Contact us for help with the following heating and cooling systems:

Why Choose Us?


Our local plumbers and HVAC experts understand the unique plumbing, heating, and cooling needs of Merrimack residents—so you can expect accurate solutions and quality results with every service.


You can count on our experts to arrive on time, ready to provide you with the solution you need. We respect your time and your property, and will leave your home or workplace as clean as we found it.


It can be stressful working with a contractor. This is why we strive to provide our customers with hassle-free and transparent service. Expect upfront pricing and options tailored to your needs and budget.

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