Cold showers in Los Angeles almost always trace back to one of two things: a failed tank or an aging unit nobody's descaled in years. Reviewers on this page specifically call out water heater installs, gas valve swaps, and descaling jobs by name, and the top pick alone has racked up nearly 3,000 Google reviews, so there's no shortage of local proof to check before you commit to a repair or a full tankless conversion.
Short answer: For water heater work in Los Angeles, JW Plumbing, Heating and Air leads with 4.8 stars across 2,973 reviews and a specific mention of instant hot water heater descaling as an annual service. Monkey Wrench Plumbing, Heating, Air & Electric (4.8, 489 reviews) runs a dedicated tankless water heater install and repair line, and A-1 Total Service Plumbing (4.9, 1,554 reviews) handles expansion tank installs alongside valve replacement.
#1 Overall🕑 Open 7 days↩ Responds to reviews
JW Plumbing, Heating and Air
4.8★★★★★2,973 Google reviews
JW Plumbing, Heating and Air runs an annual instant hot water heater descaling service as part of its maintenance plan offering, alongside standard water heater installation and repair. One long-time customer describes using the company for this exact service for years across two houses, with a senior tech handling the descaling using a vinegar-based solution. It's the most-reviewed name on this list for any plumbing work, and water heater maintenance shows up specifically in that history.
What people praise
- Runs a repeat annual descaling service, not just one-off repairs
- Senior techs assigned to maintenance-plan customers
- Free annual plumbing inspection bundled with the maintenance plan
- Large volume of consistent five-star reviews
Worth knowing
- One reviewer suggested a biodegradable descaler over the standard solution used, worth asking about if you have a preference
Reputation scorecardrank in Los Angeles
Review volume2,973 · 97th
Info completenesssite · phone · hours
Rating breakdown92% 5-star
✓ VerifiedSource: Google
Our take: The strongest option here if you want a standing maintenance relationship rather than a one-time emergency call, since descaling and inspection are already part of what customers describe using them for.
📍904 Wall St Ste 203, Los Angeles, CA 90015
#2🕑 Open 6 days/wk↩ Responds to reviews
Red Lilly Plumbing
4.8★★★★★596 Google reviews
A-1 Total Service Plumbing is a licensed Los Angeles plumber (California State License 1135475) whose reviewers specifically describe shower valve replacement paired with a water heater expansion tank install. Its site lists water heaters among its core residential services alongside repiping and trenchless repair. The highest rating of the top names on this page comes from a crew reviewers say explains the full scope before quoting.
What people praise
- Reviewer-confirmed expansion tank installation work
- Clear, upfront explanation of scope before the quote
- Same-day response reported on a leak tied to a water heater fitting
- Licensed, bonded, and insured
Worth knowing
- One reviewer's initial quote for an unrelated drainage job dropped by more than half after negotiation, so confirm the price is firm before work starts
Reputation scorecardrank in Los Angeles
Info completenesssite · phone · hours
Rating breakdown92% 5-star
✓ VerifiedSource: Google
Our take: A strong pick specifically for expansion tank and valve work tied to a water heater, with a rating that edges out every other name on this page. Get the written quote first given the mixed pricing feedback.
📍1647 Beverly Blvd, Los Angeles, CA 90026
#3🕑 Open 7 days↩ Responds to reviews
Monkey Wrench Plumbing, Heating, Air & Electric
4.8★★★★★489 Google reviews
Monkey Wrench Plumbing, Heating, Air & Electric runs a dedicated tankless water heater line covering both repair and installation, listed as its own service category on the company site alongside standard tank water heater work. A reviewer specifically credits the team with replacing a water heater gas valve and burner assembly. The company also publishes an $88 single drain cleaning special, a rare concrete price point on this page.
What people praise
- Tankless water heater repair and installation offered as a named specialty
- Reviewer-confirmed gas valve and burner assembly replacement
- Technicians who walk through the diagnosis before starting work
- Published promotional pricing on at least one common service
Worth knowing
- One reviewer reported cash going missing during a multi-day repair; the company says it has no record matching that account and asked the reviewer to contact management directly
- A different reviewer felt an electrical quote ran high before negotiation
Reputation scorecardrank in Los Angeles
Info completenesssite · phone · hours
Rating breakdown91% 5-star
✓ VerifiedSource: Google
Our take: The clearest tankless-conversion specialist on this page, with real gas valve and burner work in the reviews. Worth calling for a tank-to-tankless upgrade specifically; read the cash-complaint review yourself and weigh it against the rest of the record before deciding.
📍4649 Beverly Blvd, Los Angeles, CA 90004
#4🕑 Open 7 days↩ Responds to reviews
United Plumbing Heating Air & Electric
4.8★★★★★271 Google reviews
United Plumbing Heating Air & Electric is a multi-trade Los Angeles company offering plumbing, electrical, HVAC, and solar work, with water heater repair among its listed plumbing services. It advertises 24/7 service and free estimates on its site. Most reviews in its Los Angeles record focus on electrical work, but the company's core offering includes water heater troubleshooting as part of its plumbing line.
What people praise
- 24/7 scheduling advertised for plumbing and electrical combined
- Technicians who explain the problem in plain terms before quoting
- Weekend and evening availability reported by reviewers
- Licensed and insured across multiple trades
Worth knowing
- Its available reviews lean toward electrical jobs rather than water heater work specifically
- Site content references a separate San Diego location, so confirm current LA water heater service details when you call
Reputation scorecardrank in Los Angeles
Info completenesssite · phone · hours
Rating breakdown92% 5-star
✓ VerifiedSource: Google
Our take: It ranks here on real Los Angeles data and a listed water heater service line, but confirm same-day water heater availability directly, since most of the detailed review record is about electrical calls.
📍8590 Production Avenue, Los Angeles, CA 90026
#5🕑 Open 7 days
L.A to O.C Plumbing Pro
5.0★★★★★110 Google reviews
L.A to O.C Plumbing Pro is a smaller, one-technician-led Los Angeles plumbing operation whose reviews mention water pressure regulator installation and shutoff valve repositioning, both directly related to water heater setups. Reviewers consistently name the same technician, Armando, who they describe as affordable and dependable across repeat visits. There's no business website listed, so information here comes entirely from Google's profile and review text.
What people praise
- Reviewer-confirmed water pressure regulator and shutoff valve work
- Perfect five-star rating across every review on file
- Reasonable, clearly laid-out estimates before work begins
- Complimentary snake cleaning added to at least one job at no extra charge
Worth knowing
- No business website to verify service scope or licensing beyond what reviews describe
- A one-technician operation may have less scheduling flexibility during peak demand
Reputation scorecardrank in Los Angeles
Info completenessphone · hours
Rating breakdown100% 5-star
✓ VerifiedSource: Google
Our take: The perfect rating and consistent Armando-specific praise make this a strong pick for smaller water-pressure or valve-related fixes tied to a water heater. Confirm licensing and availability directly since there's no site to check.
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Claim this spot › How we rank these water heater companies
Every number on this page is computed from public Google data as of the date shown, not from opinion or payment. Rating is the business’s live Google star average. Review volume tracks how many customers have rated them, benchmarked against other Los Angeles water heater providers. Confidence weighs the rating by that volume, so a strong score from thousands of reviewers counts more than a perfect one from a handful. Recency reflects how recently people are still leaving reviews. No business can pay to change these numbers.
What affects water heater costs in Los Angeles (2026)
We don’t have a locally sourced, citable price table for water heater installation or tankless conversion in LA yet, so we’re not publishing numbers we can’t back up. Cost generally depends on whether it’s a repair, a like-for-like tank replacement, or a conversion to tankless (which usually means new venting and gas line work), plus the size of the unit and access to it. Get a written quote that specifies tank versus tankless and confirm whether permit costs are included.
Water heater service across Los Angeles
The companies above serve the greater Los Angeles area, including Downtown, the San Fernando Valley, Koreatown, West LA, Silver Lake, and Echo Park. Searching for water heater repair near me? Every listing below shows a live phone number and directions so you can reach the closest option fast.
What to ask before hiring a water heater company
- Is this a repair, a like-for-like tank swap, or a conversion to tankless?
- Are you licensed and insured in California? (Ask for the license number.)
- Does the quote include the permit and any required venting or gas line changes?
- What size and type of unit do you recommend for my household?
- Is there a warranty on the unit and on the labor separately?
- How soon can you get here if the tank is actively leaking?
Frequently asked questions
How did you choose these Los Angeles water heater companies?
We started from water heater installers and repair companies in Los Angeles with a public Google presence, then ranked by rating, review volume, consistency, and recency. See How we rank these water heater companies above.
Are these rankings paid?
No. Rankings come from the public Google data in the scorecard. A business can pay to be a Featured Partner, which adds a badge and top placement, but that never changes another business’s score or position on the underlying data.
How often is this updated?
The data carries a verified date (August 2026 on this page). We refresh listings periodically so ratings and review counts stay current.
Is it worth switching to a tankless water heater in Los Angeles?
It depends on your household’s hot water demand and your existing gas and venting setup. Monkey Wrench specifically lists tankless install and repair as a service line, so ask them or another provider here to walk through the tradeoffs for your home.
What’s the difference between calling a general plumber and a water heater specialist?
A general plumber can usually handle a standard tank swap or repair, but a tankless conversion often involves gas line and venting changes that are worth confirming a company has direct experience with before you book.
The bottom line
JW Plumbing is the safest default if you want an ongoing maintenance relationship, since descaling and inspection are already part of what customers describe using them for. If you’re specifically converting to tankless, Monkey Wrench’s dedicated service line makes it worth the call. Either way, get the quote in writing and confirm whether it covers tank, tankless, or both before work starts.
