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Find Sump pump or interior foundation drains installers in Portsmouth

Avatar for Groundworks
Groundworks
4.6(
26
)

Serving Portsmouth, NH and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

"Excellent service. I had a sump pump system put in 10 years ago by Rescon. Never had any problems with it, worked great. This weekend with all the rain the pump stopped working. I called there emergency line and a service technician called me back in less than an hour. They were at my house in less the 2 hours fixing my pump. They did charge me an emergency dispatch fee for the service call but I guess that s expected on a weekend. Overall it was excellent service and I am very happy I chose this company."
Foundation
Foundation
Foundation
Basement
Basement

+16

Response time12 hrs
188 neighbors recently requested a quote
Recommended by56%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.2(
1,355
)

Serving Portsmouth, NH and surrounding areas

Approved (Corporate)

In business since 1988

Emergency services offered

Warranties offered

"Rick addressed all my concerns. He quickly replaced the part in the toilet. He tightened the shower faucet and cleared the drains. He left the bathroom clean. He was very courteous and answered all of my questions."
Golf Tournament
Water quality team
HVAC tech
Electrical team
Bryan, electrician

+24

128 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Derry Plumbing & Heating
Derry Plumbing & Heating
3.7(
43
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"My only complaint was when I made the call I was not told that there was a service fee - that is not right! The guys that installed the water heater were great and left no mess - they get 5 stars â­ ï¸"
Rinnai install
Designer shower
Drain line
Showroom shower/tub stall
Faucet fixtures

+2

Response time9 hrs
Response rate86%
6 neighbors recently requested a quote
Avatar for Broman Contracting LLC
Broman Contracting LLC
5.0(
3
)

Serving Portsmouth, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

\nBroman Contracting LLC is a locally owned and operated company with over 20 years of experience providing trusted foundation health solutions to homeowners. We specialize in protecting homes from the ground up, offering services like waterproofing, foundation repair, crawlspace encapsulation, drainage systems, sump pumps, and radon mitigation. Our goal is to keep your home safe, dry, and structurally sound while delivering honest recommendations and high-quality workmanship you can rely on.

Before
Excavation
Backfill
Basement Waterproofing
Finished Concrete

+2

5 neighbors recently requested a quote
Avatar for Easy A's Plumbing & Heating, LLC
Easy A's Plumbing & Heating, LLC
4.5(
3
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"I hired them to replace a sluggish toilet. Andrew took my call immediately and set a schedule for the next day. He came right on time and did a great job. I will definitely call them again."
Under the camp
Attic
Camp
Camp
Camp

+68

Response time1 day
Recommended by100%of homeowners
Avatar for NH Dry Basement, LLC
NH Dry Basement, LLC
4.8(
72
)

Serving Portsmouth, NH and surrounding areas

In business since 1980

Free estimates

Emergency services offered

"Mike and his crew did a fantastic job installing a sump pump in our family room due to recent water damage, the work was done in record time as well as ahead of time quoted. They are real professionals in my book."
Basement
Basement
Flooded Basement
Flooded Basement
Flooded Basement

+1

Response time2 days
Recommended by97%of homeowners
Avatar for Absolute Water System LLC
Absolute Water System LLC
4.7(
30
)

Serving Portsmouth, NH and surrounding areas

In business since 1981

Emergency services offered

Credit card accepted

"George and his team were extremely friendly and professional. This is a good group of people. Courteous and thoughtful, they were able to do a complete installation of both systems from scratch in about 6 hours.
The new radon remediation system (Bubble Up) has the added benefit of boosting the fixture pressure in the house to city level or better (60-75psi) as well as completely resolving the pH level of the water.
The cost was slightly lower than the other two quotes we received, partially due to the fact that Absolute offered a "multi-system" discount since two systems were going in at the same time.
If in your service area, I would highly recommend George Doumit of Absolute Water System.
"
Additional Photos
Additional Photos
Additional Photos
Recommended by96%of homeowners
Avatar for Jeff's Drains
Jeff's Drains
4.5(
15
)

Serving Portsmouth, NH and surrounding areas

In business since 2007

Emergency services offered

Credit card accepted

"SUPER GREAT,CHRIS CAME TO MY HOUSE MY DRAIN WAS CLOGGED REAL BAD,HE DID NOT LEAVE UNTIL HE HAD MY SINK DRAINING AS IF IT WAS BRAND NEW,WHEN HE LEFT IT LOOKED LIKE HE HAD NEVER BEEN IN MY HOUSE SUPER CLEAN,HE QUOTED ME A PRICE AND HE STUCK TO IT.CHRIS WAS A DETERMINED CRAFTSMAN HE WORKED HARD TO GET MY DRAIN WORKING DON`T THINK TWICE ABOUT HIRING JEFFS DRAINZ ,YOU WILL GET HONEST PERFECTIONIST"
Additional Photos
Additional Photos
Recommended by92%of homeowners
Avatar for Mr. Drains, Inc.
Mr. Drains, Inc.
4.2(
15
)

Serving Portsmouth, NH and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"Replaced blocked plumbing in basement and under kitchen sink. Work was performed quickly and professionally. Would use Mr. Drains for any future plumbing issues."
Drain repair
Drain repair
PVC main sewer line
Main line pvc pipe
Kitchen sink line

+10

Response time4 hrs
Response rate90%
Recommended by91%of homeowners
Avatar for Coy Plumbing & Heating
Coy Plumbing & Heating
5.0(
8
)

Serving Portsmouth, NH and surrounding areas

In business since 2024

Free estimates

Emergency services offered

"We were very pleased with the communication and the outcome of our project. We have an old home with some older piping. Finding someone that works on steam boilers is tough. When they looked at the install, they explained what needed to happen clearly deand unrstandable."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Response time2 days
Response rate100%
Recommended by87%of homeowners
Showing 1-10 of 48
FAQs for sump pump or interior foundation drains installation projects in Portsmouth, NH

Most residential pumps draw approximately 1,300 to 2,900 watts when they first start, then settle at roughly 800 to 1,050 watts during normal operation. The exact number depends on the motor’s horsepower and how often the float switch tells the pump to run. Even at the high end, the electricity cost is minor compared with the expense of cleaning up a flooded basement.

Grab a ruler and an empty 18‑inch‑wide pit. During a steady rain, time how much the water rises in one minute. Multiply that depth (in inches) by 60 to calculate gallons per hour, then add 50% for safety. If the result tops 2,100 gallons per hour—about 35 gallons a minute—you’ll need a 3/4‑horsepower unit. Anything lower, and a 1/3- or 1/2-horsepower pump should do the trick.

Loud rattling, constant cycling, or shuddering vibrations are the pump’s way of telling you it’s on its last legs. Musty smells, higher electric bills, and visible rust are other red flags. If the unit is 10 years old or older and exhibits any of these symptoms, replace it before the next heavy rain turns your basement into a wading pool.

You don’t have to hire a licensed plumber, but you should still bring in someone who installs sump pumps for a living—whether that’s a plumber, basement‑waterproofing specialist, or experienced handyman. They know the local codes, can wire the pump safely, and will test the system before they leave. Skipping professional help might void the warranty and could leave you with a pump that fails when you need it most.

Not every basement needs a pump, but if your home sits in a floodplain, has a high water table, or has ever taken on water during a storm, a sump pump is inexpensive insurance. For basements that only struggle with condensation or the occasional damp spot, sealing cracks and improving drainage may be all that is needed.

The Portsmouth, NH homeowners’ guide to sump pump or interior foundation drains installations

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