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Find Septic system installers and replacers in Merrimack

Avatar for Septic Designs of NH, LLC
Septic Designs of NH, LLC
4.5(
29
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"They came to inspect the Septic for home buying .They explain the system and how it works ,so I could understand , showing me the cleanout and D Box area . After this they coverd the two holes and left it like they found it. They both are Pro s and I will use them again"
Septic Inspection
Leach Field
Septic System Distribution Box
Septic Camera
Septic Pipe

+43

Response time8 hrs
13 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Innovative Septic Solutions
Innovative Septic Solutions
4.3(
35
)

Serving Merrimack, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1985

Free estimates

Emergency services offered

"No one wants to replace their septic system, but if you need to â ¦. Call Bob. From begging to the end of the job, he made the process painless. He explained everything, how the system works and gave us options to fix the old system or replace. His crew was great, arrived when he said they would, worked quickly and left my yard/lawn in better condition then before the work started. Great company , great serviceâ ¦. Thank you!"
Response time2 days
14 neighbors recently requested a quote
Recommended by75%of homeowners
Tom Howe Septic Systems and Excavation
4.9(
7
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 1968

Free estimates

Customers say: Quick response

"Tom Howe and his team are a dedicated professional who takes his work very serious and it shows. A man of great integrity, Tom can sell you more but he won't. He will only sell you what you need. As a real estate agent, I see septic systems on a regular basis that have been poorly installed and failed inspections after just a few years. I have never seen a system that Howe has done that has failed. He only uses the best techniques and products so he can put his name and reputation behind them. As for my personal experience, Tom put a system in at my home and did so quickly and efficiently with no delays or excuses and it looked terrific when it was done despite the mounded look which he was very clever at blending in to the landscape. Take my advise, use Tom. You will not regret it."
Response time2 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
Roadway Excavators Inc.
5.0(
2
)

Serving Merrimack, NH and surrounding areas

Approved

In business since 1996

Free estimates

Offers commercial services

Roadway Excavators Inc. is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business

Response time6 hrs
16 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Sewer Surgeons LLC
Sewer Surgeons LLC
5.0(
9
)

Serving Merrimack, NH and surrounding areas

In business since 2013

Free estimates

Emergency services offered

"I had a drain clog that was becoming a real headache, and Sewer Surgeons took care of it quickly and professionally. The technician was friendly, showed up on time, and explained what was going on without making it complicated. The price was fair, and there were no surprises. The whole process was made easy and overall I would recommend them to anybody in a heart beat."
Septic Repairs
Septic Repairs
Septic Repairs
2 neighbors recently requested a quote
Avatar for BMP Consultants
BMP Consultants
5.0(
6
)

Serving Merrimack, NH and surrounding areas

Call us today for all your excavating needs! We handle start-to-finish septic system installations. We will work with any design team you may already have in place. We do not provide maintenance or pumping services.

Septic Tank Project
Recommended by100%of homeowners
Avatar for Choice Home Warranty
Choice Home Warranty
4.0(
5,676
)

Serving Merrimack, NH and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"I would highly recommend choice over any home warranty as a home owner i had a major problem with my hvac system and they got it replaced in a timely fashion much respect for them don't miss out on a great deal"
Recommended by82%of homeowners
Avatar for Primos LLC
Primos LLC
5.0(
8
)

Serving Merrimack, NH and surrounding areas

In business since 2010

Free estimates

Emergency services offered

Primos offers Commercial/Residential Concrete patios/driveways/stamped and decorative, Asphalt Paving/Sealcoating, Paver Patios and Retaining Walls. We also offer excavating and drainage, plus sewer line replacements. \nWe will offer the best price with fast, reliable, and professional service. Our customers are our number 1 priority. We listen to exactly what you looking for and we will make sure you are happy before we leave.\n

Recommended by100%of homeowners
Showing 1-10 of 26
FAQs for septic system installation and replacement projects in Merrimack, NH

Most septic system replacements require several days to complete, not including permitting and preparation time. The process begins with site assessment and testing, followed by excavation, component installation, and final inspection. Weather conditions, property accessibility, and inspection schedules can all affect your project timeline. Your contractor can provide a more specific estimate based on your property's unique characteristics.

Standard homeowners' insurance policies don't cover septic system replacement due to age or normal deterioration. Coverage may apply if damage results from specific covered events, but routine maintenance and eventual replacement are generally considered homeowner responsibilities. Review your policy details or speak with your insurance agent to understand your specific coverage limitations.

Look for multiple indicators such as slow-draining fixtures, unusual gurgling sounds in plumbing, sewage odors inside or outside your home, or wet spots in your yard. Unusually lush grass over the drain field area, frequent backups, or recurring repair needs might signal system failure. Addressing these warning signs promptly can prevent property damage and health hazards.

DIY septic installation is not recommended and may violate local regulations. Professional installation ensures compliance with health codes, proper design for your specific site conditions, and appropriate safety measures. The specialized equipment, technical knowledge, and permitting requirements make this a job best left to licensed professionals who can guarantee the system's safety and effectiveness.

With proper maintenance, including regular pumping, a drain field lasts 20 years. Various factors influence system longevity, including household size, water usage patterns, and soil conditions. Regular professional inspections can help determine when replacement becomes necessary. If your system requires increasingly frequent repairs, replacement might be more economical than continuing to address individual problems.

The Merrimack, NH homeowners’ guide to septic system installations and replacements

From average costs to expert advice, get all the answers you need to get your job done.