Tankless Water Heater Repair in Los Angeles
Specialized tankless water heater service that extends lifespan and performance.
When your tankless system stops delivering steady hot water, it disrupts your whole routine. From cold showers to appliances that won’t run properly, these problems can’t wait. At Over Under Plumbing, we specialize in tankless water heater repair and maintenance across Los Angeles. Our licensed plumbers provide fast service, accurate diagnostics, and lasting repairs so you can enjoy reliable hot water again.
If you’ve been searching for “tankless water heater repair near me” or need ongoing tankless water heater service, our team is here to help.
Why Tankless Water Heater Repair Matters
Getting a tankless water heater is a smart move for a house, but it definitely requires regular maintenance. Unlike a big tank that just sits with hot water, the tankless type uses burners and sensors to heat water on the spot. That gives you endless hot water, yet tiny problems may appear and halt the flow if nobody checks them soon before they cause damage.
Some of the most common problems we repair include:
Fluctuating or No Hot Water – Often caused by clogged filters, failing sensors, or improper gas flow.
Ignition or Burner Malfunctions – Your unit may not fire up at all, leaving you without hot water when you need it most.
Mineral Buildup – Hard water in Los Angeles often leads to scaling, which reduces flow and strains the system..
Error Codes and Warning Lights – These alerts signal issues with temperature sensors, exhaust, or water flow.
Unusual Noises – Clicking, rumbling, or whistling often point to buildup or mechanical wear.
Regular tankless water heater maintenance, including professional flushing and cleaning, prevents these issues and keeps your system running at peak efficiency. With proper service, a tankless water heater can last 15–20 years, double the lifespan of most traditional tanks — saving you money on both energy bills and premature replacements.
Benefits of Choosing Over Under Plumbing for Tankless Service
Tankless systems are more complex than traditional water heaters, and not every plumber has the right training to repair or maintain them properly. At Over Under Plumbing, we’ve built our reputation on helping Los Angeles homeowners maximize their investment with expert tankless water heater service.
Here’s what sets us apart:
- Licensed and Insured Plumbers: Every job is completed to California plumbing codes, protecting both your home and your system.
- Specialized Tankless Training: We work with all major brands and models, from newer installations to older units that need extra care.
- Fast Response Times: When your hot water stops, we don’t make you wait. Same-day repair options are often available for urgent issues.
- Advanced Diagnostic Tools: We use technology like combustion analyzers, flow testers, and thermal cameras to identify problems quickly and accurately.
- Transparent Pricing: You’ll always receive a clear estimate before work begins, with no hidden charges added later.
- Guaranteed Workmanship: Every repair and service comes with our 30-day workmanship guarantee, showing we stand behind the quality of our work.
Choosing Over Under Plumbing means your tankless water heater repair isn’t just a quick fix, it’s a lasting solution designed to keep your system efficient and dependable for years.
How Our Tankless Water Heater Repair Process Works
When your hot water stops working, the last thing you want is guesswork. At Over Under Plumbing, we’ve developed a clear process for tankless water heater repair that ensures accuracy, efficiency, and lasting results. Here’s how it works:
Inspection & Diagnostics – Our plumbers begin with a thorough system check. We look for error codes, test water flow, and inspect for leaks, mineral buildup, or worn components that may be causing the issue.
Upfront Estimate – Before any repair begins, you’ll receive a transparent quote that explains the problem and the tankless water heater repair cost, so you’re never left in the dark.
Professional Repair or Cleaning – Depending on what we find, we may replace faulty sensors, clean burners, flush out mineral deposits, or complete other targeted repairs to restore your system’s performance.
Testing & Calibration – Once the repair is complete, we run your system to ensure it heats water consistently, operates safely, and meets manufacturer specifications. We’ll also adjust settings for maximum efficiency.
Final Clean-up – We leave the work area neat and your hot water running again, often the very same day.
By following this process, we make sure your tankless system gets back to delivering the steady, efficient hot water your household depends on.
Tankless Water Heater Maintenance Tips for Los Angeles Homes
A properly cared-for tankless system can provide hot water for 15–20 years, but it needs regular attention to stay efficient. In Los Angeles, hard water is a common issue that accelerates mineral buildup inside your unit, making professional tankless water heater maintenance especially important. With the right care, you’ll avoid costly repairs and keep energy bills under control.
Here are simple steps every homeowner should follow:
- Flush the Unit Annually: A professional tankless water heater cleaning removes mineral deposits and scale that reduce flow and strain the system.
- Install a Water Softener: Protects your heater from Los Angeles hard water, preventing buildup and extending the unit’s lifespan.
- Check Air Intake and Exhaust Vents: Blocked vents affect efficiency and can even create safety hazards. Keep them clear and inspected.
- Clean or Replace Filters: Most manufacturers recommend servicing filters every 6–12 months for optimal operation.
- Schedule Yearly Professional Service: Expert tankless water heater service ensures burners, sensors, and gas flow are functioning properly.
Preventive care pays off: fewer unexpected breakdowns, consistent hot water, and lower energy costs month after month.
Frequently Asked Questions About Tankless Water Heater Repair
How often should I schedule tankless water heater maintenance?
Most manufacturers recommend flushing and cleaning once a year. This prevents mineral buildup and extends the system’s lifespan.
Can a tankless water heater be repaired instead of replaced?
Yes. Many issues, like ignition problems or mineral buildup, can be fixed with repairs or cleaning. Replacement is only needed when the system is severely damaged or too old.
Why is my tankless water heater giving inconsistent temperatures?
This often happens due to mineral buildup, clogged filters, or a failing sensor. Our plumbers will diagnose and correct the problem quickly.
How long does tankless water heater repair take?
Most repairs are completed in a single visit, usually within a few hours. More complex issues may require ordering parts, but we work fast to restore hot water.
Is professional cleaning really necessary for tankless units?
Yes. Hard water in Los Angeles causes mineral deposits that restrict flow and damage components. Annual tankless water heater cleaning keeps your system efficient and prevents costly repairs.
Call Over Under Plumbing for Tankless Water Heater Repair
Don’t wait until small issues turn into major breakdowns. Over Under Plumbing offers expert tankless water heater repair in Los Angeles, plus ongoing service and maintenance to keep your system running like new. Call 818-937-0060 or click below to schedule your tankless repair or cleaning today.
$139
Water Heater Inspection & Flush Out
Get Your Water Heater Inspected And Sediment Out To Keep Your Water Heater Running Smoothly!
For Water Heaters Located In The Garage or Outside
Cannot be combined with any other offers or discounts. The coupon must be presented at the time of scheduling. Not valid for trip charge or diagnostic fee. Valid on standard pricing only. Redeemable for one-time use per home.