HomeAdvisor screened and approved seal

HomeAdvisor Screened & Approved

This service professional has passed the HomeAdvisor screening process.

Learn about our screening process
Learn about our screening process

7 Years In Business

Company Details

  • Verified Licenses


  • Mon: Open 24 Hours
  • Tue: Open 24 Hours
  • Wed: Open 24 Hours
  • Thu: Open 24 Hours
  • Fri: Open 24 Hours
  • Sat: Open 24 Hours
  • Sun: Open 24 Hours
View All Details & Credentials


Service Details

  • Residential Work
  • Commercial Work
  • Small Jobs Welcome

Areas of Expertise

  • Plumbing Repairs
  • Water Heaters
  • Water Mains
  • Drains
  • Septic
View All Offerings and Cities Served

Cost Information

  • Free Estimates
  • Credit Cards Accepted


18 Verified Reviews
  • 5
  • 4
  • 3
  • 2
  • 1

Highly rated for

  • Quality
  • Value
  • Customer Service
Showing 1-10 of 18 results
5.0 Samantha jean C. Florence, AZ

I called Knockout Plumbing in the evening and they returned my call first thing the following morning. They sent a technician out and he was here at 9 am. Very friendly and customer service was excellent! This company knows their stuff. We needed a whole new hot water heater and they replaced it at a low cost and very prompt. Thank you Knockout Plumbing for everything you do. I will always use your services.

5.0 Patricia M. Mesa, AZ

Everyone I spoke with was responsive and professional. My water heater had split down the back during the night so my main water valve was turned off. They sent someone out in just a few hours and followed up with me from the office to ensure I was receiving timely service (considered an emergency I believe and they worked me into their schedule). I have forgotten names, but the service provided by them, from the owner, installer and office manager, was excellent. Additionally, the installer of my new water heater managed to get the job done in the same day, was cordial and professional in all respects, and did not display the condescension that is sometimes adopted when a workman is dealing with a single woman (those workmen/companies never get my money btw). I am very satisfied, appreciative of the quality and speed with which they resolved my problem, and would highly recommend them to anyone. Later, when I researched the cost of what I purchased, their charge was within the normal range for a replacement water heater installation.

5.0 Sondra C. Mesa, AZ

Excellent service. My now go to plumber

5.0 Nickolas S. Queen Creek, AZ

I had 3 quotes from plumbing companies to install a hotwater tank. A Truck 2 men and 47 min labor. KNOCK OUT rate WAS REASONABLE. WARNING!! Home Depot was the biggest THIEF in this project, they quoted $800. PLUS.

5.0 Ronald K. San Tan Valley, AZ

Excellent. I appreciate his integrity. I’m

Response from Company:

Thank you Ronald for the positive feed back.

5.0 Earlene C. Queen Creek, AZ

Dan and his team were very professional and personable. Dan has followed up on our satisfaction. I would certainly recommend Knock Out to anyone. I believe they are a down to earth caring company.

5.0 Alan U. Apache Junction, AZ

Nice people, Dan was very informative and provided multiple options for the bid. Dan and Joey were prompt, cordial and cleaned up after the install. I would recommend them without hesitation.

5.0 Kate B. Mesa, AZ

David does excellent work at a good price. David is very knowledgeable and obviously cares about his customers. I can't recommend him highly enough. You won't go wrong.

5.0 Marshall G. Queen Creek, AZ

Courteous, helpful assistance.


Knockout Plumbing, LLC
Before and Afters
Electric Water Heater
Tankless Water Heater
Cartridge replacement
Water Heater Replacement
Kitchen Remodel

HomeAdvisor allows Service Professionals to post information about themselves and their business on their profile. HomeAdvisor does not review or verify the information representations set forth in those profiles as they are self-reported by the Service Professional.

To find more licensing information for your state, visit our Licensing Requirements page. Note that some states require local or county level licensing and you should verify whether or not your pro is properly licensed.

Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
    HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
    We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.

NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
Please see HomeAdvisor's Terms and Conditions for a full description of how we screen Service Professionals

**Only for U.S. service professionals

Final Step - Confirm Your Appointment:

Confirm your appointment with on , - Change


By clicking Confirm Appointment, you affirm you have read and agree to the HomeAdvisor Terms & Conditions, and you agree and authorize HomeAdvisor and its affiliates, and their networks of Service Professionals, to deliver marketing calls or texts using automated technology to the number you provided above regarding your project and other home services offers. Consent is not a condition of purchase.