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Top-Rated Sump pump or interior foundation drains installers in Carnation - Updated Nov 2026

Avatar for Insulation Co., LLC - Removal & Clean Outs
Insulation Co., LLC - Removal & Clean Outs
4.9(
226
)
Sump Pump or Interior Foundation Drains - Install

Serving Carnation, WA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"These guys were great, and the owner, Jo Estrada, a pleasure to work with. A crew of 5 spent 5 hours cleaning, inspecting, and replacing insulation and vapor shield in our crawl space. They took pictures of everything, before and after. THe crew was pleasant, and worked really hard.... couldn't believe how much stuff they removed from under there. The crawl space is tight, but they didn't complain (at least to us!). They gave us good recommendations for some repairs needed for the foundation. All for a most reasonable price, compared to other estimates. They deserve every star they can get!"
1
2
3
1
2

+46

Response time5 hrs
Recommended by49%of homeowners
Avatar for Schmitty's Plumbing
Schmitty's Plumbing
4.8(
50
)
Sump Pump or Interior Foundation Drains - Install

Serving Carnation, WA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Schmitty's Plumbing responded to my Angi's service request almost as soon as I submitted it, and they beat out three other Angi plumbing companies in terms of pricing and transparency. I hired Schmitty's to remove an old double bowl kitchen sink and faucet with a new single bowl sink and upgraded faucet. There was no upselling or attempts to convince us to replace our garbage disposal which two of the other plumbers recommended we do. We saw no reason to replace our disposal which functions well and is not that old. Partners Drake and Gage came out to our home as scheduled, and they got to work immediately working efficiently and thoroughly. We appreciated their no-nonsense, honest, prompt service, and very fair pricing. I chose Schmitty's based on the positive customer reviews, and would hire them again. I told them I would recommend them to all my friends who have plumbing needs!"
Response time2 days
Response rate100%
Recommended by93%of homeowners
Avatar for All Pro Plumbing Northwest, LLC
All Pro Plumbing Northwest, LLC
4.5(
576
)
Sump Pump or Interior Foundation Drains - Install

Serving Carnation, WA and surrounding areas

Approved

Super Service Award Winner

In business since 1994

Emergency services offered

Warranties offered

"Veteran-owned business. Honest, reputable and on time for the appointment. Ross and David spent all afternoon clearing out two clogged drain spouts and replaced/repaired a badly cracked PVC pipe after hydro jetting them. They inserted a snake with a camera and showed me the problem. They also provided a veteranâ  s discount! Thank You. Brad Pesek"
Our Team
136 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Groundworks
Groundworks
4.3(
314
)
Sump Pump or Interior Foundation Drains - Install

Serving Carnation, WA and surrounding areas

Approved (Corporate)

In business since 1995

Free estimates

Emergency services offered

"Gardner came to do an inspection of my basement and provide a quote. I had received other quotes that only provided for a single sump pump install at outrageous prices. He was very thorough, took two hours to measure, inspect, provided videos and explanations on everything, and the quote was shockingly affordable with so much more work I was ecstatic! I am getting a three sump pump with back up battery, and so much more for basically what the others quoted. And, to have the option to finance through Greensky was the cherry on top! If you are in King County, ask for Gardner @ GROUNDWORKS - you won’t regret it!"
Foundation
Foundation
Foundation
Concrete
Concrete

+16

Response time2 days
121 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for South West Plumbing, Heating, Air, & Electric
South West Plumbing, Heating, Air, & Electric
4.0(
638
)
Sump Pump or Interior Foundation Drains - Install

Serving Carnation, WA and surrounding areas

Approved

In business since 1980

Emergency services offered

Warranties offered

"They may be good for business to business, medium to large new construction projects. High operating costs (and high margins?) means higher prices. I do not recommend for a homeowner with an existing single family residence. I needed to replace the galvanized pipe connecting my house to the street for an irrigation project. Between offering the highest bids (before an extra $10k option to install all copper), their nonsensical proposal for an invasive relocation of the line to service the water heater, and their proposal to use an excavator to tear up my yard and remove multiple shrubs and a tree just to replace my water line, I elected to use a different company. I appreciate the business like demeanor, their connections to government and utilities, and that they have the resources to pay for multi year apprenticeships"
Response time9 hrs
Response rate100%
36 neighbors recently requested a quote
Avatar for MTU Services LLC
MTU Services LLC
5.0(
5
)
Sump Pump or Interior Foundation Drains - Install

Serving Carnation, WA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

Protect the investment you’ve made with the knowledgeable team at MTU Services LLC. We are your local basement and foundation experts serving all of Washington state and North Idaho. We offer customized basement waterproofing, foundation repair, concrete crack repair, and basement sump pump solutions and egress windows for your home. Contact MTU Services LLC today to learn more about how we can help you protect your home. Give us a call to request a quote or to schedule service.\n\nServices include: leaking basement or crawl space repairs, foundation cracks repaired, lifting piers and levelling for your home or building, sup um systems and more.

Elevator pit waterproofing and sealing
Piers under an existing home
Piers under an existing homes middle wall
Solutions/Answers
Response time1 day
Response rate100%
4 neighbors recently requested a quote
2 Sons Plumbing
5.0(
5
)
Sump Pump or Interior Foundation Drains - Install

Serving Carnation, WA and surrounding areas

Approved (Corporate)

In business since 2017

Credit card accepted

Offers commercial services

2 Sons Plumbing is a full-service plumbing and sewer company serving the greater Seattle area. Known for reliable service, honest recommendations, and quality workmanship, our team handles everything from everyday plumbing repairs to complex sewer solutions—helping homeowners keep their systems running smoothly year-round.

Avatar for WA EVERGREEN INSULATION LLC
WA EVERGREEN INSULATION LLC
4.4(
7
)
Sump Pump or Interior Foundation Drains - Install

Serving Carnation, WA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Had a great experience with WA Evergreen Insulation from start to end. Rob came to my house, quoted me an insulation install, made absolutely sure that they would not cover any existing knob and tube with insulation and prevent a fire. The crew showed up and completed the job in one day. Once they got started it was clear they knew exactly what they were doing - and they managed to shimmy into the extremely small attic access and cleaned up my rat jerky in the crawlspace! I'm very happy with this job and with this company!"
After Picture Fixed and well protected
Before Picture (DANGEROUS for crawlspace!!)
New Construction Insulation
Protected and Sanitized Crawlspace
Before Picture Of No Insulation and fire hazard

+2

Response time9 hrs
Response rate93%
Recommended by83%of homeowners
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FAQs for sump pump or interior foundation drains installation projects in Carnation, WA

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 Carnation, WA 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.