The Best Plumbing Contractors in Merrimack, NH

Compare the highest-rated plumbing professionals in Merrimack, New Hampshire. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Merrimack Valley Plumbing

4.8
(142 reviews)
Verified

A full-service plumbing company serving Merrimack and surrounding areas with comprehensive residential and commercial services. Known for rapid emergency response and expertise in water heater installation and repair.

456 Daniel Webster Hwy, Merrimack, NH 03054

Specialties & Features

24/7 Emergency Service
Water Heater Specialists
Tankless Water Heaters
Sewer Line Repair

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Mr. Rooter Plumbing of Merrimack

4.6
(118 reviews)
Verified

Part of a national franchise with strong local presence, offering professional plumbing services with a focus on drain cleaning, sewer services, and pipe replacement. Provides upfront pricing and 24/7 emergency availability.

321 DW Highway, Unit 4, Merrimack, NH 03054

Specialties & Features

Drain Cleaning
Sewer Services
Pipe Replacement
Video Camera Inspections

Business Information

Years in Business:8 years
Licensed:Yes
Insured:Yes
#3

Granite State Plumbing & Heating

4.7
(96 reviews)
Verified

Serving the Merrimack area for over two decades, this company provides comprehensive plumbing services with expertise in both residential and commercial systems, including bathroom and kitchen remodels and hydronic heating systems.

789 Industrial Drive, Merrimack, NH 03054

Specialties & Features

Kitchen/Bath Plumbing
Hydronic Heating Systems
Leak Detection
Commercial Plumbing

Business Information

Years in Business:22 years
Licensed:Yes
Insured:Yes

Why These Are the Top Plumbing Contractors in Merrimack

Merrimack's plumbing market is served by a mix of local established companies and national franchise providers. Common issues include hard water problems due to the region's water mineral content, frozen pipes during harsh New Hampshire winters, and aging sewer lines in some older neighborhoods. Local providers are well-versed in New Hampshire plumbing codes and the specific challenges of the New England climate. Most reputable companies offer 24/7 emergency service given the extreme winter conditions that can cause pipe bursts.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Merrimack regulations and climate

Frequently Asked Questions About Plumbing in Merrimack

Get answers to common questions about plumbing services in Merrimack, New Hampshire.

1What are the most common plumbing issues for Merrimack homeowners, especially related to our climate?

The most frequent issues are frozen and burst pipes due to our harsh New Hampshire winters, followed by water heater failures from hard water sediment buildup common in our area. In spring, sump pump failures in basements are also common due to snowmelt and high groundwater levels. Proactive winterization and regular water heater maintenance are highly recommended for local homes.

2How do I choose a reliable plumber in Merrimack, and are there specific local licenses I should verify?

Always choose a plumber licensed by the New Hampshire Department of Safety (Plumbing License #) and insured. For Merrimack, it's also wise to select a company familiar with local codes, the specific soil conditions affecting sewer lines, and the well and septic systems common in surrounding towns. Check for strong local reviews and membership in organizations like the PHCC of NH.

3What is the typical cost range for common plumbing services like water heater replacement or fixing a leak in Merrimack?

Costs vary, but a standard 50-gallon water heater replacement typically ranges from $1,800 to $2,800, including installation and disposal, influenced by local fuel costs and any needed code upgrades. Emergency service for a burst pipe can start at $300+ for the after-hours call, plus repair costs. Always request a detailed, written estimate that includes all parts, labor, and potential permit fees.

4When is the best time to schedule non-emergency plumbing work in Merrimack, and how does seasonality affect availability?

Schedule non-emergency projects like bathroom remodels or repiping in late spring or early fall. Plumbers are most booked during deep winter (emergency freeze-ups) and the height of summer (for outdoor lines and projects). Scheduling during shoulder seasons often provides better availability and pricing, and is ideal for outdoor work before the ground freezes.

5Are there any local regulations in Merrimack I should know about for plumbing repairs or renovations?

Yes, most plumbing work requires a permit from the Merrimack Building Department, especially for water heater replacements, re-piping, or adding fixtures. New Hampshire has strict backflow prevention and water conservation codes (like certain toilet models). If your home is on a private well and septic system, additional health department regulations may apply for any work affecting those systems.