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Find Sump pump or interior foundation drains installers in Cos Cob

Avatar for Budget Dry Waterproofing, Inc.
Budget Dry Waterproofing, Inc.
4.4(
240
)
Sump Pump or Interior Foundation Drains - Install

Serving Cos Cob, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"Inspection of a previously installed sump pump system (primarily the sump pump). Inspection found that it seized up and wouldn't have functioned. Replacement made - and very fortunately - since when the pump is needed, it IS needed. It wouldn't have been good to have a flooded basement or have an upcoming flooded basement."
Drain at base of bilco
going up on the wall
finished wall area
completed
finished sump pump area

+37

Response time1 day
148 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Groundworks
Groundworks
4.9(
13
)
Sump Pump or Interior Foundation Drains - Install

Serving Cos Cob, CT and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2025

Free estimates

Warranties offered

Groundworks is the North America's leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we're there with one mission to repair, protect and improve their home. For state licenses visit Groundworks.com/licensing

Foundation
Foundation
Foundation
Concrete
Concrete

+16

640 neighbors recently requested a quote
Avatar for Aldos plumbing
Aldos plumbing
5.0(
35
)
Sump Pump or Interior Foundation Drains - Install

Serving Cos Cob, CT and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"I texted him and he came out after 30 minutes. It was super quick and amazing. He showed me that it was just a silt underneath the pump and also showed me what to do for future problems. It was a quick job and he's our go to guy for a plumbing work."
Additional Photos
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+41

1 neighbors recently requested a quote
Recommended by44%of homeowners
Avatar for Atomic Rooter Inc
Atomic Rooter Inc
4.5(
126
)
Sump Pump or Interior Foundation Drains - Install

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"Steven was the absolute best… arrived at the very start of only a two hour window, fixed the problem in about an hour. Very polite and courteous. I called three plumbers and he was the first to call me back and the only one who would give me a ballpark figure over the phone. The others wanted to come out and have a look for $70. even though I accurately described the job in detail. I’m thrilled to have a reliable plumber! A more than satisfied customer, Lora Harrigan"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Response time8 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for L.C. Schede & Sons, Inc.
L.C. Schede & Sons, Inc.
4.0(
293
)
Sump Pump or Interior Foundation Drains - Install

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1922

Free estimates

Emergency services offered

"I ended up hiring company after I shopped around for my Boiler, burner and Indirect hot water tank replacement need. I extensively researched prices and companies in my area. Lou the owner returned my call on a weekend in case there was any emergency. After he only asked to send him photos and videos. And instantly gave me quote for two scenarios (Which btw he honored all the way). This was stark difference from other companies who had to set an appointment to come measure my house with expensive equipment or software (Which size and BTU output I needed I already knew). And tried to upsell me something I didn't really ask for. Sched beat others on price which was most important to me in addition to reviews. After I picked them company clearly communicated when Job will start and were very punctual. David and Guy (I didn't catch name) where very punctual - cleaned after, daily. Clark and Enfi (I hope I spelled the name right) joined them the next day. Also very punctual and professional - all worked with minimally disturbing my day, as I had to work from home. And Job taking one extra day, they did it, leaving everything clean. Explained me and gave advice on maintenance and tune up. I'm not a professional in this area but what they installed looks good after years of watching my rusty boiler and Tank started leaking ;-). Pretty much rebuild everything with new pipes and motor pumps. I hands down will recommend company without any hesitation. Definitely shop around. But have no doubts Schede will do the Job as well if not better than others with great quality to price ratio."
 $100,000 Kitchen
Master Bath/Spa
Children's Bath
Guest Bath
Response time6 hrs
8 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for First String Plumbing, Heating & Cooling
First String Plumbing, Heating & Cooling
5.0(
10
)
Sump Pump or Interior Foundation Drains - Install

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

First String Plumbing, Heating & Cooling is built on over four decades of hands-on, master-level experience paired with modern equipment, straightforward pricing and a commitment to serving our neighbors near and far.\n\nWe believe every homeowner in Connecticut and New York deserves a team they can count on whenever they need help. When the lights are at their brightest and all eyes are on us, we will always do what is right and that commitment never fades.

Tankless Water Heater
Water Pipe Repair
Water Pipe Repair
Water Heater Install
17 neighbors recently requested a quote
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FAQs for sump pump or interior foundation drains installation projects in Cos Cob, CT

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 Cos Cob, CT 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.