Serving Montclair & the Inland Empire
Licensed & Insured Honest. Reliable. Local.
Sweetwater Plumbing 💬 Text us ☎ (909) 312-4516

Water heater installation
done right.

Putting in a new water heater is a bigger job than it looks, and we are glad to handle every detail so you do not have to worry about it. That means code compliance, venting, gas pressure testing, California-required earthquake strapping, expansion tanks where needed, and a drain pan where required. Earthquake straps are free with every installation.

Water heater leaking right now?

Turn off the cold-water valve at the top of the heater. For a gas heater, turn the gas control to OFF; for an electric heater, switch off its breaker. Then call (909) 312-4516 any hour, or text (909) 247-6791 from 8 a.m. to 8 p.m. If you can’t stop the water there, shut off the main water valve.

Water Heater Expert
A.O. Smith Authorized Service Contractor: service, repair, warranty and replacement from a water heater expert. We install, service and replace A.O. Smith water heaters. Verify our A.O. Smith listing →
What's included

What does every water heater installation include?

  • Removal and disposal of your old water heater
  • New supply line connections (PEX or copper as appropriate)
  • New gas connections and venting (gas units), with a gas pressure test
  • Earthquake strapping included (tank heaters: two straps, upper and lower third of the tank, as California requires)
  • Drain pan install where required
  • T&P valve and discharge tube installation
  • Expansion tank installation where required by code, with the tank's air charge pre-set to match your home's water pressure before it goes in (a step many installs skip)
  • System pressurization and operational test
Service Area

Serving 24 cities across the Inland Empire.

Chino · Chino Hills · Claremont · Colton · Corona · Diamond Bar · Eastvale · Fontana · Grand Terrace · Highland · La Verne · Loma Linda · Mira Loma · Montclair · Norco · Ontario · Pomona · Rancho Cucamonga · Redlands · Rialto · Riverside · San Bernardino · San Dimas · Upland

What customers say

Real reviews from real customers.

★★★★★4.8 / 5 average
· View all 588+ Google reviews →
GM
Greg Marick
★★★★★ May 2024
GOOGLE

Can’t sing Sweetwater Plumbing’s praises enough. When I first inquired about replacing my 75-gallon gas water heater with an 80-gallon heat pump water heater, I was impressed with John Howe’s product knowledge and ability to understand my goals. (I was very…

CS
Celso Sapien
★★★★★ Sep 2026
GOOGLE

My water heater was not heating water anymore. Called Sweetwater Plumbing and John was of great help and full of information. Plus his response time to get job done was on point. The gentlemen that came out to do repairs were quick and professional.Thank…

SM
Suzie Morales
★★★★★ Jul 2025
GOOGLE

Freddy the serviceman was great. He explained everything in detail about what needed to be done. He replaced my water heater and a few other things that needed attention. Very pleased with the work he completed. Will use Sweetwater plumbing again when needed…

Common Questions

Frequently asked questions.

How much does water heater installation cost in the Inland Empire?
We look at the job first, then give you your options in writing before any work begins, each with one flat-rate price. The price you approve is the price you pay. Our customers tell us our pricing is honest and fair. Prefer to keep your savings where they are? You can spread the cost of a new water heater over monthly payments, and checking your options has no impact on your credit score.
Are you licensed for water heater installation in California?
Yes. Sweetwater Plumbing is a licensed C-36 Plumbing Contractor (California CSLB #889182), fully bonded with $2M general liability insurance.
Where do you offer water heater installation?
We provide water heater installation throughout the Inland Empire, including Montclair, Ontario, Upland, Rancho Cucamonga, Chino, Chino Hills, Pomona, Claremont, Fontana, Riverside, and 14 other cities. Call (909) 312-4516 to confirm coverage.

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