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Mavson Plumbing Services LLC

Top Pro

Heater problems

Responds within a day


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If you hire this pro, you’re covered by a money-back guarantee. Learn more

If you hire this pro, you’re covered by a money-back guarantee. Learn more

About
* Licensed, professional workmanship with attention to detail. * Honest, upfront pricing—no hidden fees or surprises. * Quality repairs and installations using dependable materials. * Prompt, reliable service that respects your time. * Residential and commercial plumbing solutions. * Clean job sites—we treat your home or business with respect. * Long-lasting solutions, not temporary fixes. * Customer satisfaction is our top priority.
Overview

Current Top Pro

Hired 39 times

Serves Bowie, MD

Background checked

1 employee

1 year in business

Business hours

SunClosedMonClosed

Payment methods

This pro accepts payments via Apple Pay, Cash, PayPal, and Zelle.

Services offered
Plumbing
Projects and media
Projects and media
Reviews

Customers rated this pro highly for professionalism, work quality, and value.

Exceptional 5.0

23 reviews

5

100%

4

0%

3

0%

2

0%

1

0%

Your trust means everything to us. Learn about our review guidelines.

Read reviews that mention:


pro avatar
Jack G.

Aug 13, 2026

Hired on Thumbtack

Absolutely incredible experience with John. He was extremely knowledgable and creative in getting us the best solution for a tricky water heater install in an old house. I could not recommend him more and I will come back for all my plumbing needs

Details: Yes, the location has an existing heater • Gas tank (standard) • I already purchased the water heater • Townhouse

Water Heater Installation or Replacement
pro avatar
Kevin W.

3 weeks ago

Hired on Thumbtack

John Henry did an awesome job. Was professional, cared about the quality of work and made sure to educate me on the new water heater post installed. I just had to show him the old water heater then the water shutoff and he was able to get the job done.

Details: Yes, the location has an existing heater • Gas tank (standard) • I would like the pro to buy the water heater • House

Water Heater Installation or Replacement
pro avatar
Ashlee B.

Aug 2, 2026

Hired on Thumbtack

John did an outstanding job replacing my water heater. He was prompt, honest, and took the time to explain every step of the process. His pricing was fair and reasonable, especially compared to major retail plumbing companies that quoted me nearly three times the price without taking the time to educate me or explain what was needed. During the installation, John noticed my water heater was missing an expansion tank and a vent. He gladly installed both and clearly explained why they were important for the safety, performance, and longevity of the system. He also identified another issue that no one else had pointed out. He explained that copper pipes should not come into direct contact with certain metals because it can cause galvanic corrosion (oxidation), which was the reason my copper pipes had turned green. Rather than leaving the problem, he replaced all of the affected copper piping and made sure everything was installed correctly to prevent future issues. What impressed me most was his attention to detail and the meticulous care he put into every aspect of the installation. He was polite, courteous, respectful of my home, and cleaned up thoroughly before leaving. John also took the time to teach me more about my home's plumbing system, which I truly appreciated. It's rare to find someone who is not only highly skilled but also willing to educate their customers. His honesty, craftsmanship, and professionalism are second to none. If you're looking for an honest plumber who will diagnose the problem correctly, fix it right the first time, provide expert workmanship, and charge a fair price, choose this company. They have earned my trust, and I will definitely be calling John for all of my future plumbing needs. I highly recommend them.

Details: Yes, the location has an existing heater • Gas tank (standard) • I already purchased the water heater • Townhouse

Water Heater Installation or Replacement
pro avatar
Deanna T.

3 weeks ago

Hired on Thumbtack

John replaced a hot water heater for me. I would hire John again in a heartbeat. Considerate, straightforward and got the job done quickly. He even came out on a Sunday so that I didn’t have to go longer without hot water.
Water Heater Installation or Replacement
pro avatar
Rebecca S.

Jul 14, 2026

Hired on Thumbtack

Great experience today with shower/tub repair. Technician worked very hard for a reasonable price. Very satisfied! Highly recommend.

Details: 1 shower or bathtub • Combination shower and bathtub • Leaking faucet or shower head • House

Shower and Bathtub Repair
Credentials
Background Check

John Hermanstyne Henry

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