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    Average homeowner rating
  • Verified reviews icon794
    Verified sump pump installation services reviews

Top-Rated Sump pump installation pros in Darien - Updated Nov 2026

Avatar for Groundworks
Groundworks
4.9(
13
)
Sump Pump or Interior Foundation Drains - Install

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

433 neighbors recently requested a quote
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 called me within 5 minutes of my submitting the request on Home Advisor. Had a new water heater delivered to my house with 3 hours. He had it installed two hours later. Very courteous and professional."
Boderus high efficiency gas boiler
Boiler
Gas boiler
Shower installation
A/C Install

+5

Response time2 days
Recommended by95%of homeowners
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

"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 Cassidy Plumbing and Heating, Inc
Cassidy Plumbing and Heating, Inc
4.5(
31
)
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

"Cassidy is professional, punctual, and clearly communicate. Thank you for guidance and repairing our corroded pipe. Thanks for installing the valve for the expansion tank too! I didn’t realize how much money that will save us in the future. ??"
Heating System
Heating System
Plumbing
The Team
Navien Water Heater

+3

Response time2 days
Response rate100%
8 neighbors recently requested a quote
Avatar for Mr. Rooter of Southern Fairfield  County
Mr. Rooter of Southern Fairfield County
4.2(
210
)
Sump Pump - Repair or Replace

Serving Darien, CT and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"They arrived on time, and assessed the issue. I needed to replace my original sewer pipe and the lead connector to the toilet—both located in our crawl space. They scheduled a day to do the work. It took 1/2 day to update the sewer pipe to PVC. They were clean, courteous, and knowledgeable. Every is working great."
Commercial Case Installation
Back Flow On Irrigation
Back Flow On Irrigation
Repair of Septic Line
Repair of a Septic Line

+2

Response time2 hrs
1 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for MVP Plumbing and Heating, LLC
MVP Plumbing and Heating, LLC
4.7(
18
)
Sump Pump - Repair or Replace

Serving Darien, 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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Sump Pump Installation FAQs, answered by experts

Thankfully, you do have a few sump pump backup options in case it fails. One option is a battery-powered backup sump pump. Another option is using a portable backup generator as a power supply for your sump pump. Unlike a battery-powered backup which has limited power, a generator can run around the clock for as long as you need it. 

Or you can opt for a water-powered backup pump, which uses your home’s water supply as a source of power. However, this may not be the best option if you find your house frequently has low water pressure.

Costs range from $300 to $1,200, depending on the pump type, issue, and installation complexity.

The life span of a water pump ranges from five to 15 years on average. Regular maintenance can extend its life. If you notice significant drops in performance, strange noises, or frequent malfunctions, consider a water pump or well pump replacement. Always get in touch with a professional if you're concerned about yCan I install a water pump myself?our pump's condition.

If you notice any new sump pump noises, such as persistent clanging or gurgling, then you likely have a sump pump problem on your hands. Foul odors coming from the pump can also indicate problems. Additionally, if your unit turns on but doesn't pump water, you might have to address electrical problems. In any of these cases, it's a good idea to hire a professional to address the issue.

Start by calling a plumber if you want to install a sump pump battery backup. Talk to them about your situation and needs. Sometimes, electricians or waterproofing contractors will install a battery backup, and in that case, the plumber you call should be able to point you in the right direction.

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.