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About
Trusted Water Systems repairs, replaces, and installs water heaters throughout San Diego County, tank and tankless. We also install whole-house water filtration, water softeners, and custom reverse osmosis systems.
Run by Jacob McGrew, a licensed C-36 contractor with 20 years of experience and hundreds of 5-star reviews. Jacob inspects the problem himself, explains what he finds, and gives you a straight answer — no sales scripts, no upsells, no pressure.
Serving homeowners across San Diego County with fast, personal response and honest recommendations.
Overview
Current Top Pro
Hired 146 times
Background checked
License verified
3 employees
4 years in business
Business hours
SunClosedMon7:00 am - 5:00 pm
Payment methods
This pro accepts payments via Apple Pay, Cash, Check, Credit card, and Venmo.
Top Pros are among the highest-rated, most popular professionals on Thumbtack.
2025
2024
Credentials
License verified
C36 – Plumbing Contractor
License state: CA
Background checked
Passed by Jacob Mcgrew on Aug 7, 2023.
Projects and media
Projects and media
Reviews
Customers rated this pro highly for professionalism, responsiveness, and work quality.
Exceptional 5.0
189 reviews
5
99%
4
1%
3
0%
2
0%
1
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This pro's rating is a combination of reviews posted by customers both on and off of Thumbtack. Thumbtack cannot verify external reviews.
Your trust means everything to us. Learn about our review guidelines.
Read reviews that mention:
Chelsea G.
Feb 20, 2026
•
Hired on Thumbtack
Jacob was extremely helpful and got back to me so quickly. He helped me relight my water heater’s pilot light over the phone and was very patient. I’ve never before experienced someone so responsive and helpful in the plumbing industry. I highly recommend!
Details: Routine maintenance • No hot water • Gas tank • Closet • Condo/Apartment
Water Heater Repair or Maintenance
Michael C.
Jun 26, 2026
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Hired on Thumbtack
ike most water heater replacements, ours was an absolute emergency. We discovered a leak and needed a solution fast. Jacob came out and was fantastic, he took his time explaining the best options for our home without any pressure, and we decided to go with a Navien tankless system.
In less than 24 hours from discovering the leak, we had hot water running again. It was professionally installed, the customer service was top-tier, and we now have peace of mind with a 15 year warranty. Plus, we're looking forward to the utility savings from not constantly heating a giant tank of water. Highly recommend Jacob!
Details: Yes, the location has an existing heater • Gas tankless • I would like to discuss with the professional • House
Water Heater Installation or Replacement
Anindya B.
Jan 15, 2026
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Hired on Thumbtack
Incredible value and fantastic work. Jacob (Trusted Water Systems) handled a complex tankless heater install and laundry move for a fraction of what the big guys quoted. I had a lot of anxiety about the project, and he was endlessly patient and reassured me constantly. He did exactly what he promised, on budget, and with great quality. Don't hesitate to hire him!
Details: Yes, the location has an existing heater • Gas tankless • I would like to discuss with the professional • House
Water Heater Installation or Replacement
John M.
Mar 6, 2026
•
Hired on Thumbtack
Jacob replaced a water heater and did an excellent job. He was professional, efficient, and timely. I highly recommend Trusted Water Systems.
Details: Yes, the location has an existing heater • Gas tank (standard) • I would like to discuss with the professional • House
Trusted Water Systems's reply
Thanks John!
Water Heater Installation or Replacement
Mariana E.
Jan 1, 2026
•
Hired on Thumbtack
Jacob did a great job in excellent timing. Came by, identified the problem, bought and installed a new water heater within a couple of hours
Details: Repair • No hot water • Gas tank • Garage • House
Water Heater Repair or Maintenance
FAQs
What should the customer know about your pricing (e.g., discounts, fees)?
All prices are for cash/check/zelle payments and include parts, labor, and tax. All card payments are subject to a 4% processing fee.
What education and/or training do you have that relates to your work?
I am a licensed C-36 plumbing contractor and i have been doing this type of work for 15+ years.
How did you get started doing this type of work?
I got started doing water heaters many years ago at a company that we wont name and I worked there for a few years. I learned a lot, self taught. Then I was hired on at another company where i worked for quite few more years until i decided to start my own business.
