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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon790
    Verified sump pump installation services reviews

Verified Reviews for Sump Pump Installation pros in Darien, CT

*The Angi rating for Sump Pump Installation companies in Darien, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Sump Pump Installation needs.

*The HomeAdvisor rating for Sump Pump Installation companies in Darien, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Sump Pump Installation needs.

Last update on July 16, 2025

Find Sump pump installation pros in Darien

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

Serving Darien, 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
147 neighbors recently requested a quote
Recommended by86%of homeowners
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Avatar for Brian Nisbet Plumbing and Heating
Brian Nisbet Plumbing and Heating
4.9(
378
)
Sump Pump - Repair or Replace

Serving Darien, CT and surrounding areas

Approved

Super Service Award Winner

In business since 1993

Credit card accepted

Customers say: True professional

"Prompt service, arrived on time, installed kitchen faucet/garbage disposal and fixed the leak in the shower. Very impressed with the work."
Response time4 hrs
Response rate88%
Recommended by97%of homeowners
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Avatar for Groundworks
Groundworks
5.0(
12
)
Sump Pump or Interior Foundation Drains - InstallSump Pump - Repair or Replace

Serving Darien, 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

608 neighbors recently requested a quote
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Avatar for Sila Heating, Cooling and Plumbing
Sila Heating, Cooling and Plumbing
4.5(
896
)
Sump Pump or Interior Foundation Drains - Install

Serving Darien, CT and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"Hello, I just signed the contract with Sila Heating, Cooling and Plumbing on March 27, 2026. I hope everything goes well; I'll let you know at the end, once everything is installed. See you then!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time10 hrs
Response rate100%
4 neighbors recently requested a quote
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Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.3(
223
)
Sump Pump or Interior Foundation Drains - InstallSump Pump - Repair or Replace

Serving Darien, CT and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"I really liked CT Basement systems. The sales rep walked me through the process of the basement SaniDry I had installed. When the installer came it turned out that I didn’t need all of the duct work and I was able to save a few hundred bucks. The installer was very professional, neat and helpful . I definitely will hire this company again. Customer service even followed up with me a few days later and had to remind me to register the system (good thing because I had forgotten)."
Finished basement in CT
Basement Finishing in CT
Basement Finishing in CT
Basement Finishing in CT
Basement Finishing in CT

+13

Response time10 hrs
183 neighbors recently requested a quote
Recommended by90%of homeowners
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Avatar for The Builders & Cleaners
The Builders & Cleaners
4.9(
120
)
Sump Pump - Repair or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Darien, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Very good service and affordable than you!!!"
Dust out from the ductwork
Dust out from the ductwork
Clean vent
Clean vent
Dust in the return

+1817

Response time1 day
Response rate92%
Recommended by87%of homeowners
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Avatar for E and R Mechanical
E and R Mechanical
4.6(
258
)
Sump Pump - Repair or Replace

Serving Darien, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"Good installation job. Prompt and professional. Charged an extra $50 over estimate for additional proposed install effort."
Water Heater
Water Heater
Water Heater
Water Heater
Water Heater

+6

Response time2 hrs
Response rate93%
128 neighbors recently requested a quote
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Avatar for Mike's Plumbing Services
Mike's Plumbing Services
4.3(
206
)
Sump Pump - Repair or Replace

Serving Darien, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Emergency services offered

"Mike was great. He gave a very competitive qoute and took the time to explain the work that he would be doing. He was very professional and helpful from beginning to end. He installed a new Combi Boiler for us in 2 days now we have hot water and heat working perfectly once again. I would recommend Mike for any job."
Boderus high efficiency gas boiler
Boiler
Gas boiler
Shower installation
A/C Install

+5

Response time2 days
1 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for Atomic Rooter Inc
Atomic Rooter Inc
4.5(
126
)
Sump Pump or Interior Foundation Drains - Install

Serving Darien, CT and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"It went very well. Spoke to them one evening and by the next morning, they were here to install the water heater. I appreciated the quick service."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Response time8 hrs
Response rate100%
1 neighbors recently requested a quote
Request Quote
Avatar for Cassidy Plumbing and Heating, Inc
Cassidy Plumbing and Heating, Inc
4.5(
30
)
Sump Pump - Repair or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Darien, CT and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Emergency services offered

Warranties offered

"Oct. 6 2025 it went quick. I received an estimate of The job first. The work was done correctly. It didn't take long. If I need plumbing service again. I would contact Cassidy plumbing & Heating."
Heating System
Heating System
Plumbing
The Team
Navien Water Heater

+3

Response time2 days
Response rate100%
13 neighbors recently requested a quote
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Showing 1-10 of 194
Sump Pump Installation questions, answered by experts

The difference between an ejector pump and a sump pump lies in their purpose and design—an ejector pump functions to remove liquid gray water and soft solid sewage waste from your home. If you have a laundry room or bathroom in your basement, an ejector pump for your sewage tank prevents sewage from backing up in your washing machine or bathroom’s drains.

A sump pump is designed to remove excess groundwater that may enter your home, either due to flooding or periods of heavy rain.

There are several indicators that your washing machine’s drain pump is bad, including incomplete cycles, water not draining, lack of spinning, a foul odor when the machine is running, and a loud grinding or buzzing noise when the pump is trying to move water down the drain.

Every three to four months, you should clean any dirt and debris off of your sump pump. You should also check the inlet screen (at the bottom of the pump) to make sure that it isn’t blocked. On top of that, you should deep clean your sump pump once per year—or hire a sump pump pro to do it for you.

3/4 HP is stronger than 1/2 HP. Horsepower measures how much weight can be moved and how fast, or the power needed to move 550 pounds one foot in one second. 1 HP equals 550 foot-pounds per second, so the higher the horsepower, the heavier the load it can lift. While 1/2 HP is a standard, powerful option, 3/4 HP has the extra strength to handle heavier, larger doors with ease.

A sump pump should be placed at least three feet deep in a pit. The rim of the sump pump basin should be level with your basement floor. If you find your pit is too deep, you can fill the bottom with gravel until the rim of the sump pump is flush with the floor.

The Darien, CT homeowners’ guide to sump pump installation services

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

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