Open: 24 hours
3580 Polaris Ave #17, Las Vegas, NV 89103
© 2025 Active Plumbing Inc
Tankless Water Heater Repair & Maintenance Service in Las Vegas, NV
Tankless water heaters work hard—and when they’re not sized, installed, or maintained correctly, you can end up with no hot water, lukewarm showers, error codes, or noisy operation. Hard water in the Las Vegas valley is tough on heat exchangers, screens, and valves. Active Plumbing provides tankless water heater repair and maintenance service in Las Vegas, Henderson, North Las Vegas, Summerlin, and nearby communities—whether your unit just stopped working or you want to keep it running at its best with regular service.
✓ Emergency-friendly: Fast help for no hot water, error codes, or failing units.
✓ Hard-water focused maintenance: Descaling and cleaning tailored to Las Vegas water.
✓ All major brands serviced: Diagnostic, repair, and maintenance for most gas tankless systems.
✓ Licensed local pros: Trusted tankless repair and maintenance plumbers in the Las Vegas valley.
✓ Emergency-friendly
✓ All major brands serviced
✓ Licensed local pros
✓ Hard-water focused maintenance
What our Clients think about us
Your satisfaction is our priority.
What Is Tankless Water Heater Repair & Maintenance Service?
Tankless repair and maintenance service includes:
Diagnosing problems when you have no hot water, error codes, or unstable temperatures
Checking gas supply, water flow, venting, filters, and sensors that affect performance
Descaling the heat exchanger (when the unit is equipped and plumbed for flushing)
Cleaning inlet screens, filters, and key components that can clog with mineral and debris
Making necessary repairs—such as replacing failed parts, correcting bad piping/valves, or addressing vent/condensate issues—within the agreed scope
The goal is to get your tankless heater working properly again, and to keep it that way with periodic maintenance suited to Vegas water and your usage.
Why Choose Active Plumbing
Tankless-specific diagnostics: We don’t just “guess”—we read error codes, check gas, flow, venting, and sensors.
Hard-water aware: We understand how Las Vegas hard water affects tankless units and build descaling into service.
Repair + maintenance mindset: If you’re calling for a breakdown, we can also perform overdue maintenance (when appropriate) to help prevent repeat issues.
Honest repair vs. replace guidance: If a unit is too far gone or installed wrong, we’ll explain options—not push you blindly either way.
Clean, respectful work: We protect your home, keep the workspace neat, and leave you with clear next steps.
Licensed & insured: Nevada License #0047021, trusted for tankless water heater service.
Immediate Actions (What to Do Now)
Note what your tankless unit is doing (no hot water, only lukewarm, shutting off mid-shower, error code on screen).
If you see an error code, write it down or take a photo of the display.
Check if gas and water valves to the unit are fully open (do not take anything apart).
If you see active leaking from the unit or its piping, shut off water to the heater if you can do so safely.
Call Active Plumbing at (702) 438-3357 and tell us you need tankless water heater repair or maintenance—and whether you currently have no hot water at all.
Common Tankless Problems We See
No hot water at all or system won’t fire
Error codes flashing on the control panel
Lukewarm water or temperature swings during showers
Unit shuts off mid-use and has to be reset
Reduced flow or “unit won’t turn on” at low flows
Rumbling, whistling, or unusual noises during operation
Visible scale buildup or dirty inlet screens
Units that have never been descaled in a hard-water area
If your tankless hasn’t been serviced in years—or ever—it’s often overdue for a thorough maintenance visit.
Call & Symptom Review
You call (702) 438-3357 and describe what your tankless heater is doing—no hot water, codes, noise, or just overdue maintenance. We ask a few quick questions about the brand, age, and symptoms and schedule a service visit.
On-Site Inspection & Diagnostic
Your plumber inspects the unit, checks error codes, gas supply, water flow, venting, filters, and visible components, and may test pressures and temperatures to understand what’s really happening.
Findings & Upfront Options
We explain what we’ve found—such as scale buildup, dirty filters, failed parts, venting issues, or gas/flow problems—and give you clear options and pricing for repair and/or maintenance (descaling, cleaning) before proceeding.
Targeted Repairs & Maintenance Service
With your approval, we replace or repair failed components within scope and perform maintenance tasks such as descaling, flushing, and cleaning filters/screens, as appropriate for your unit and plumbing setup.
Testing, Adjustment & Safety Checks
We restart the system and test for stable temperature, proper ignition, flow, and error-free operation. We may adjust the set temperature and double-check venting and condensate (on condensing units) to confirm proper operation.
Care Tips & Future Maintenance Plan
We walk you through what we did, any remaining concerns or limitations, and recommend a reasonable maintenance interval (e.g., annual or every 1–2 years) based on your water quality and usage. If helpful, we can note signs to watch for and discuss repair vs. future replacement timelines.
Tankless Water Heater Repair and Maintenance Service Active Plumbing fix now
Exact service depends on your unit and needs, but typically includes:
Diagnostic evaluation of your tankless heater (symptoms, error codes, and basic checks)
Inspection of gas, water, venting, and visible components affecting performance
Cleaning of inlet screens/filters and other accessible debris points
Descaling/flush service of the heat exchanger (when plumbing and unit allow)
Minor adjustments and settings review, including temperature and basic controls
Written summary of findings, work performed, and recommendations for future maintenance or repairs
Costs & Timelines (What to Expect)
Many tankless repairs and maintenance visits are completed in a single appointment, depending on severity and parts availability.
You’ll receive upfront pricing for diagnostic and maintenance work before we proceed, plus a separate estimate if any major parts or additional repairs are needed.
Costs depend on brand/model, age and condition, how long it’s been since the last service, and whether parts need to be ordered or replaced on-site.
Regular maintenance (descaling, cleaning) is typically less expensive than emergency repair—and can help reduce breakdowns.
Insurance & Claims Help
Tankless failures and leaks sometimes tie into water damage and insurance questions:
If a tankless unit or its connections caused water damage, we can document what failed or was found, and what we repaired or replaced.
Our service notes and invoices can help restoration companies and adjusters understand the plumbing-side cause of an issue.
If we find that the unit was improperly installed, we can note this and discuss options to correct the installation to reduce future risk.
(Any coverage or claim decisions are entirely up to your insurer and policy; this is not financial or legal advice.)
Risks of Waiting (Why Act Now)
Sudden loss of hot water: Small issues can turn into complete shutdowns with no warning.
Scale damage to the heat exchanger: Hard water can clog and overheat the exchanger, shortening the life of the unit.
Higher gas usage and poor efficiency: Dirty or scaled units work harder and use more energy.
Leaks and internal damage: Ignoring small leaks or error codes can lead to bigger, more expensive failures.
Shorter equipment life: Lack of maintenance is a common reason tankless units fail earlier than they should.
A little maintenance now can avoid a no-hot-water emergency later.
Methods, Materials & Quality Standards
Brand-appropriate diagnostics: We follow manufacturer guidance and best practices when servicing units.
Proper flushing/descaling methods: We use appropriate pumps, hoses, and descaling solutions for heat exchangers.
Code-conscious checks: While we focus on the unit, we also flag obvious installation or safety issues we see.
Quality replacement parts: When we replace components, we use reliable, suitable parts for your model.
Realistic maintenance advice: We keep recommendations grounded in Las Vegas hard-water reality and your actual usage.
Frequently Asked Questions
How often should a tankless water heater be serviced in Las Vegas?
With our hard water, many units benefit from annual maintenance, especially descaling, but it can vary with usage and water treatment.
Can maintenance fix my “no hot water” problem?
Sometimes. Other times, parts or installation issues are involved. We’ll diagnose first, then explain whether maintenance alone is enough or repairs are needed.
My tankless has never been serviced—is it too late?
Not necessarily. We can evaluate the unit’s condition, perform maintenance where helpful, and let you know honestly if it’s still a good candidate for continued service.
Do you service all brands of tankless heaters?
We service most major gas tankless brands. On the call, we’ll ask for your brand/model and let you know if there are any limitations.
Can you also replace my tankless if it’s not worth fixing?
Yes. If a unit is beyond practical repair or very poorly installed, we can quote replacement and proper installation.
Do you offer tankless water heater repair and maintenance near me in Las Vegas?
If you’re in Las Vegas, Henderson, North Las Vegas, Summerlin, or nearby communities, yes—Active Plumbing provides tankless water heater repair and maintenance service.
More Active Plumbing Water Heater Services
Proudly Serving All of Las Vegas
Address: 3580 Polaris Ave #17, Las Vegas, NV 89103
Phone: (702) 438-3357
Hours: Open 24 hours
Email: service@activeplumbinginc.com
Active Plumbing is Las Vegas–based and available 24/7 for residential and commercial plumbing across Southern Nevada. We handle emergency plumbing, drain cleaning, sewer line repair, slab leaks, water heater repair and installation (including tankless), water softeners and filtration systems, leak detection, gas line installation, and full bathroom and kitchen plumbing upgrades—fast, professional, and backed by strong warranties.
Serving Las Vegas, Henderson, North Las Vegas, Summerlin, Paradise, Spring Valley, Enterprise, Sunrise Manor, Boulder City, and the surrounding neighborhoods.
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CALL (702) 438-3357
Hours: Open 24 hours
3580 Polaris Ave #17, Las Vegas, NV 89103