Top-rated plumbers.

Get matched with top plumbers in Cos Cob, CT

There are 33 highly-rated local plumbers.

TRUSTED BY COS COB, CT HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon924
    Verified plumbing services reviews

Find Plumbers in Cos Cob

Avatar for Westfair Water Systems, Inc.

Westfair Water Systems, Inc.

375 ADAMS ST
4.80(
40
)
Approved Pro

Westfair Water Systems, Inc.

375 ADAMS ST
4.80(
40
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
54 local quotes requested

Award Winning Water Treatment Company. A+ BBB Rating. Westfair Water Systems has been a leading force in the water treatment industry. Our Certified Technicians are trained to deal with the most complex water situations. We pride ourselves on customer service and satisfaction. Westfair Water Systems is an authorized, independent Kinetico Dealer proudly serving Westchester & Putnam Counties including surrounding areas for over 20 years. Call to Schedule a FREE WATER TEST, estimate or appointment today!

"excellent installation"

Abe R on June 2025

Award Winning Water Treatment Company. A+ BBB Rating. Westfair Water Systems has been a leading force in the water treatment industry. Our Certified Technicians are trained to deal with the most complex water situations. We pride ourselves on customer service and satisfaction. Westfair Water Systems is an authorized, independent Kinetico Dealer proudly serving Westchester & Putnam Counties including surrounding areas for over 20 years. Call to Schedule a FREE WATER TEST, estimate or appointment today!

"excellent installation"

Abe R on June 2025


Avatar for Drain Away Sewer Service Inc

Drain Away Sewer Service Inc

P.O. Box 3065
4.82(
38
)
Approved Pro

Drain Away Sewer Service Inc

P.O. Box 3065
4.82(
38
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
15 local quotes requested

At Drain Away Sewer Service, Inc., we put our customers needs first! We offer a range of drain services and we know that our customer's are the backbone of our success. Response times are quick through our 24-hour emergency service and we pride ourselves on providing competitive, up-front costs. Whether you take advantage of our maintenance and service contracts for savings, or you use us for one-time emergency services, Drain Away Sewer Service, Inc. will deliver on professional, reliable and quality work. Drain Away Sewer Service, Inc. provides both residential and commercial drain cleaning services 24 hours a day, 7 days a week and 365 days per year. Offering over 10 years of experience in the drain cleaning business, our qualified staff is prepared to handle everything from a clogged toilet to main sewer services. We are centrally located to service both Westchester and Fairfield Counties.

"Richard from Drain Away service came out the next day and fixed the clogged drain. He was also very helpful with getting Servpro out to do clean up. Richard provided full and efficient services. Very pleasant and reasonably priced. I would definitely recommend Drain Away for any plumbing issues and would use them again if needed."

Paula A on February 2025

At Drain Away Sewer Service, Inc., we put our customers needs first! We offer a range of drain services and we know that our customer's are the backbone of our success. Response times are quick through our 24-hour emergency service and we pride ourselves on providing competitive, up-front costs. Whether you take advantage of our maintenance and service contracts for savings, or you use us for one-time emergency services, Drain Away Sewer Service, Inc. will deliver on professional, reliable and quality work. Drain Away Sewer Service, Inc. provides both residential and commercial drain cleaning services 24 hours a day, 7 days a week and 365 days per year. Offering over 10 years of experience in the drain cleaning business, our qualified staff is prepared to handle everything from a clogged toilet to main sewer services. We are centrally located to service both Westchester and Fairfield Counties.

"Richard from Drain Away service came out the next day and fixed the clogged drain. He was also very helpful with getting Servpro out to do clean up. Richard provided full and efficient services. Very pleasant and reasonably priced. I would definitely recommend Drain Away for any plumbing issues and would use them again if needed."

Paula A on February 2025


"The provider came and unclogged the toilet but left me with a toilet that would not stop running. After contacting the provider to let them know they texted me a YouTube video. They said that they were going to come back to complete the repair but did not. I ended up having to hire another company to complete the job."

Adam W on October 2025

My focus is to provide a professional and affordable service for all customers based on our expirienced technicians and high quality equipments ready to take care of any drain problem or any emergency 24/7

"The provider came and unclogged the toilet but left me with a toilet that would not stop running. After contacting the provider to let them know they texted me a YouTube video. They said that they were going to come back to complete the repair but did not. I ended up having to hire another company to complete the job."

Adam W on October 2025


Avatar for Old Faithful Pump Co

Old Faithful Pump Co

22 Brayton Rd
4.88(
41
)
Approved Pro

Old Faithful Pump Co

22 Brayton Rd
4.88(
41
)
Approved Pro
Customers say: Terrific value
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
10 local quotes requested

We are an owner/operator company with 17 years of experience. We are committed to offering honest service and competitive prices. We use quality material and perform work to the highest standard to ensure longevity of the equipment you will rely on every day. We are a full service well pump & water treatment company offering 24 Hour Emergency Pump Service.We also offer water testing, water filtration, UV lights, water softeners and installation and service of water tanks.

"Joe is very experienced and very professional to replace my well pump, bring up the well cap to above ground level and installed house water filter. He discussed the job in detail and gave a fair quote. He came on time and did the job at high quality. He cleaned up everything before he finish. He took the 5% Angies list coupon as well. Will use him again and highly recommended if you need well pump service!"

Zeqiang G on September 2018

We are an owner/operator company with 17 years of experience. We are committed to offering honest service and competitive prices. We use quality material and perform work to the highest standard to ensure longevity of the equipment you will rely on every day. We are a full service well pump & water treatment company offering 24 Hour Emergency Pump Service.We also offer water testing, water filtration, UV lights, water softeners and installation and service of water tanks.

"Joe is very experienced and very professional to replace my well pump, bring up the well cap to above ground level and installed house water filter. He discussed the job in detail and gave a fair quote. He came on time and did the job at high quality. He cleaned up everything before he finish. He took the 5% Angies list coupon as well. Will use him again and highly recommended if you need well pump service!"

Zeqiang G on September 2018


Avatar for Roto-Rooter Plumbing & Water Cleanup

Roto-Rooter Plumbing & Water Cleanup

255 Stagg St
4.14(
171
)
Approved Pro

Roto-Rooter Plumbing & Water Cleanup

255 Stagg St
4.14(
171
)
Approved Pro
Customers say: Quick response
279 local quotes requested
90 years of experience

When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.

"They were a day late"

Tina D on August 2025

When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.

"They were a day late"

Tina D on August 2025


Astacio Plumbing & Heating

PO Box 4382
4.26(
34
)
Approved Pro

Astacio Plumbing & Heating

PO Box 4382
4.26(
34
)
Approved Pro
Customers say: Super punctual
240 local quotes requested
21 years of experience

What sets Astacio Plumbing and Heating apart from the rest of the field is the use of cutting edge technology to increase reliability, save you time and money, and improve safety on the job. Rich stays up-to-date on all the latest developments in plumbing and heating technology to determine how best to serve his customers. His trucks all carry the tools to get the job done on time and on budget, with as little disruption as possible. Astacio Plumbing and Heating has also spent years developing strong relationships with the best companies in the plumbing and heating business so that they can provide great service to you, quick delivery of replacement parts, and reasonable prices on excellent products. See website for additional service area. Additional email - [email protected].

"Dreadful experience. We had been customers of Astacio since 2015 when they installed our first tankless boiler which failed completely after 7 years and needed to be replaced in late 2022. ($10,000+) Their second one just stopped working; a dodgy board? The part is under warranty but they want almost $1,000 to replace it in the boiler; probably less than 2 hours work. I thought they used to be a good local business with ties to the community but be careful; their tankless boilers are unreliable and they'll try to rip you off when your heat goes out in the winter. So much for standing by their work. I'll never use them again."

CATHAL C on December 2024

What sets Astacio Plumbing and Heating apart from the rest of the field is the use of cutting edge technology to increase reliability, save you time and money, and improve safety on the job. Rich stays up-to-date on all the latest developments in plumbing and heating technology to determine how best to serve his customers. His trucks all carry the tools to get the job done on time and on budget, with as little disruption as possible. Astacio Plumbing and Heating has also spent years developing strong relationships with the best companies in the plumbing and heating business so that they can provide great service to you, quick delivery of replacement parts, and reasonable prices on excellent products. See website for additional service area. Additional email - [email protected].

"Dreadful experience. We had been customers of Astacio since 2015 when they installed our first tankless boiler which failed completely after 7 years and needed to be replaced in late 2022. ($10,000+) Their second one just stopped working; a dodgy board? The part is under warranty but they want almost $1,000 to replace it in the boiler; probably less than 2 hours work. I thought they used to be a good local business with ties to the community but be careful; their tankless boilers are unreliable and they'll try to rip you off when your heat goes out in the winter. So much for standing by their work. I'll never use them again."

CATHAL C on December 2024


Avatar for Sila Heating, Cooling and Plumbing

Sila Heating, Cooling and Plumbing

55 Lafayette Ave
4.49(
856
)
Approved Pro

Sila Heating, Cooling and Plumbing

55 Lafayette Ave
4.49(
856
)
Approved Pro
Customers say: Super punctual
382 local quotes requested
36 years of experience

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"Did a great job"

Susan S on March 2025

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"Did a great job"

Susan S on March 2025


Unique plumbing LLC

65 High Ridge Rd #308
5.00(
3
)
Approved Pro

Unique plumbing LLC

65 High Ridge Rd #308
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Very professional and detailed. Affordable and kind as well. Would highly recommend for the future."

Albert Z on November 2024

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Very professional and detailed. Affordable and kind as well. Would highly recommend for the future."

Albert Z on November 2024


Avatar for BHI Builder & Home Improvement LLC

BHI Builder & Home Improvement LLC

194 West Avenue Apt 4
5.00(
1
)
Approved Pro

BHI Builder & Home Improvement LLC

194 West Avenue Apt 4
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Builder Home Improvement LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. 20 years of accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"They were great, quick and creative."

Gustavo X on July 2022

Builder Home Improvement LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. 20 years of accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"They were great, quick and creative."

Gustavo X on July 2022


Avatar for Sam's Rooter Service LLC

Sam's Rooter Service LLC

500 West Avenue Apt 521
4.63(
12
)
Approved Pro

Sam's Rooter Service LLC

500 West Avenue Apt 521
4.63(
12
)
Approved Pro
Customers say: Quick response
56 years of experience
Free onsite estimate

We pride our company on Reliability, Great Communication, Integrity, and Quality work. We strongly believe in giving our absolute best in all of our projects, no matter how big or small. We are experts in our trade, and will always keep you educated on your particular task or project. We look forward to earning your business!Test

"Did a good job , very professional"

Michael P on April 2025

We pride our company on Reliability, Great Communication, Integrity, and Quality work. We strongly believe in giving our absolute best in all of our projects, no matter how big or small. We are experts in our trade, and will always keep you educated on your particular task or project. We look forward to earning your business!Test

"Did a good job , very professional"

Michael P on April 2025

...
Showing 1-10 of 217
Plumbing questions, answered by experts

Yes, copper pipes can freeze, crack, and burst in cold weather. In fact, of all piping types used for plumbing, copper pipes burst most easily when frozen. This is because copper conducts energy and loses heat more quickly than other types of plumbing. Copper also won't expand when the water inside freezes. Instead, it bursts or splits to accommodate expanding frozen water.

If your pipes are suddenly making loud noises, it could be due to any of the aforementioned issues. A water hammer is a common cause of this problem. Other potential causes include water pressure issues, loose pipes, air bubbles, and worn-out fixtures. Mineral buildup in the pipes can also cause loud noises. 

Water pressure regulators are commonly located near where the main water line enters the home. They’re often found in basements, utility areas, or outside near the water meter. They’re shaped like a bell and are critical for controlling the water pressure coming into the home from the public water supply.

At most, polybutylene pipes last 10 to 15 years. The material is simply not durable enough to withstand some of the chemical elements found in our water supply, such as fluoride and chlorine. These pipes tend to deteriorate quickly and lead to leaks or even pipe bursts. If your home still has polybutylene pipes, we recommend replacing them as soon as possible to prevent major water damage in your home.

Rough-in plumbing can take anywhere from three to five days for a pro to complete. The exact time to complete this job depends on several factors, such as the size of your home, the number of plumbing fixtures, and how accessible the plumbing system is. If any complex plumbing problems come up during the process, it might extend the length of your project.

The Cos Cob, CT homeowners’ guide to plumbing services

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

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"