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Top-Rated Sump pump repair or replacers in Cos Cob - Updated Nov 2026

Avatar for Aldos plumbing
Aldos plumbing
5.0(
35
)
Sump Pump - Repair or Replace

Serving Cos Cob, CT and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"Aldo was great. Communicated about when he expected to be there. Was polite and prepared with mask etc to enter the house. Found that he was able to simply repair my valve rather than go through the expensive process of replacing. Impressed with his professionalism and honesty. Would definitely recommend him."
Additional Photos
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Additional Photos
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Additional Photos

+41

1 neighbors recently requested a quote
Recommended by44%of homeowners
Avatar for The Builders & Cleaners
The Builders & Cleaners
4.9(
122
)
Sump Pump - Repair or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"A soft wall due to improperly installed gutter by some other entity or homeowner caused water to constantly leak into the wall from the exterior roofline. This soft wall grow moldy and become riddled with pests/bugs. The contractor identified the potential issues, agreed to explore and open the walls and discuss the conditions, made sound recommendations for repair and did exactly what was noted in the repair (replaced a load bearing exterior wall, fixed the sill plate, completed the roof, shingles etc. and closed up the walls on the inside with insulation and sheet rock.). The work was timely, well done, the workers were clean as they did the job and kept the rest of the property clean. The manager of the job David Apel was and is an excellent communicator with phone/email/text and photos of processes and progress. I am going to use this company in my own investment endeavors on other properties and projects given the level of finished work, the timing and especially the level of detailed communication."
Dust out from the ductwork
Dust out from the ductwork
Clean vent
Clean vent
Dust in the return

+1837

Response time1 day
Response rate92%
Recommended by85%of homeowners
Avatar for Dirty Deeds Basement Waterproofing
Dirty Deeds Basement Waterproofing
5.0(
4
)
Sump Pump - Repair or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"My sewage ejector pump in basement would not stop running and I was looking to replace it. I texted Dean two pictures of the pump, he was able to give me a quote over text and the price was quite reasonable. He received a new pump on 5/22/2023 and came over to my house. After opening up the old pump and checking, he told me that the only thing that is really broken is the check valve, the switch got stuck but is still functioning, and the pump itself works fine. I ended up asking him to only replace the check valve and the switch and this saved me about $1000 from the original plan. I appreciate Dean's honesty, professionalism, and a job well done."
Additional Photos
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+24

Response time7 hrs
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for L.C. Schede & Sons, Inc.
L.C. Schede & Sons, Inc.
4.0(
294
)
Sump Pump - Repair or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1922

Free estimates

Emergency services offered

"Hired this company to replace two water heaters in my rental. Contractor responded quickly and got job done within few days from initial contact. Highly recommend."
 $100,000 Kitchen
Master Bath/Spa
Children's Bath
Guest Bath
Response time6 hrs
16 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for First String Plumbing, Heating & Cooling
First String Plumbing, Heating & Cooling
5.0(
10
)
Sump Pump - Repair or Replace

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
15 neighbors recently requested a quote
Avatar for Candito Plumbing and HVAC, LLC
Candito Plumbing and HVAC, LLC
4.5(
28
)
Sump Pump - Repair or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2010

Free estimates

Offers commercial services

"I can’t speak highly enough about John. He responded immediately to fix a problem with a leaking toilet (required new toilet and pipe repair and coordinated the repair work with a great contractor. I highly recommend hiring John. Great work, great price. Great guy ???"
Roof top unit
Roof top unit
Kohler carrier for wall hung toilet
wall hung toilet
Wall hung toilet

+7

Response time1 day
Response rate89%
Recommended by84%of homeowners
Avatar for MVP Plumbing and Heating, LLC
MVP Plumbing and Heating, LLC
4.7(
18
)
Sump Pump - Repair or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Matt was quick to respond to my enquiry. Prompt for the appointment and did excellent work. He was very helpful with other plumbing questions and issues I had around the house. I've had him back to install a waste disposal, an outside faucet and change two sinks in the master. Highly recommend."
Faucet
Modern Powder room
Wall mount faucet
Navien Combi
Old boiler

+1

Response time1 day
Recommended by100%of homeowners
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FAQs for sump pump repair or replace projects in Cos Cob, CT

Sump pumps last about 10 years with proper maintenance and prompt repairs. Several factors can influence your sump pump’s lifespan, such as usage, environmental conditions, and installation. Premium sump pumps with heavy-duty motors and quality components tend to last longer than lower-cost models. Pedestal sump pumps usually last longer than submersible models since they’re not constantly exposed to water.

A basement French drain is a drainage system installed in basements or around a building’s foundation to redirect water and prevent flooding. This system features a trench with a perforated pipe that catches and transports water away. These systems can crack, freeze, or clog, potentially resulting in flooding or strain on your sump pump.

You can use a sump pump in your yard to minimize pooling water and landscape damage, but it’s best used in conjunction with other drainage systems. This can include French drains, trench drains, underground downspouts, and other equipment. Proper lawn care, such as soil aeration and native plants, also aids with drainage.

The Cos Cob, CT homeowners’ guide to sump pump repair or replaces

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