Tankless Water Heater RepairService & Repair
Expert repair for tankless water heaters. All brands serviced with same-day availability.
Tankless water heaters are more complex than traditional tank heaters and require specialized knowledge. Air Source Home Comfort technicians understand these systems and can diagnose error codes, perform descaling, and replace components to restore your hot water.
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Professional Tankless Water Heater Repair Services
Tankless water heaters offer energy efficiency and unlimited hot water, but their complexity means repairs require specialized expertise. These units use sophisticated electronics, heat exchangers, and multiple sensors that must work together precisely. When problems occur, generic troubleshooting often fails. Air Source Home Comfort technicians are trained on all major tankless brands. We understand the error codes, can diagnose complex failures, and know when descaling or component replacement is needed. Whether your tankless unit shows an error code, produces inconsistent temperatures, or isn't heating at all, we have the expertise to fix it.
Tankless water heaters have become popular throughout our service area, especially in homes where space is limited or demand for hot water is high. From Barrie condos to Muskoka cottages, these units provide efficient hot water when working properly. When problems occur, homeowners need a contractor who truly understands tankless technology—and that's where we excel.
Common Tankless Water Heater Repair Issues We Fix
- No hot water or water not getting hot enough
- Temperature fluctuating during use
- Error codes displayed on unit
- Unit not igniting or firing
- Strange noises during operation
- Unit shutting off during use
- Low water pressure from unit
- Cold water sandwich effect
- Mineral buildup affecting performance
- Pilot light issues (older models)
Signs You May Need Replacement
- Declining hot water performance over time
- Frequent error codes appearing
- Higher than normal gas bills
- Unit over 10-12 years old with recurring issues
- Hard water area and never been descaled
- Visible corrosion on unit
- Inconsistent temperatures becoming worse
- Longer wait times for hot water
Book Your Repair Today
Our technicians are ready to diagnose and repair your tankless water heater repair issue quickly and professionally.
Flexible payments available through Klarna—pay in 4 interest-free installments.
Schedule RepairOr call 705.606.4328
Why Choose Air Source for Tankless Water Heater Repair?
Tankless water heater repair requires specific knowledge and tools. Air Source Home Comfort delivers:
Our Tankless Water Heater Repair Process
From first call to completed repair, here's what to expect:
Contact Us
Call or book online. Note any error codes displayed—this helps us prepare with the right parts and knowledge.
Expert Arrival
Our tankless specialist arrives with diagnostic tools and common parts for your unit brand.
System Diagnosis
We interpret error codes, test components, and identify the exact cause of your problem.
Repair Quote
We explain our findings and provide a quote. For aging units, we discuss whether repair or replacement makes more sense.
Professional Repair
Once approved, we complete the repair properly. We test thoroughly to ensure consistent hot water before leaving.
"Our Navien tankless kept showing an error code and shutting off. Two other companies couldn't fix it. Air Source diagnosed a failing flow sensor, replaced it, and it's worked perfectly since. They actually understand tankless systems."— The Rodriguez Family, Barrie
Tankless Water Heater Repair Questions Answered
Common questions about tankless water heater repair from homeowners throughout Central Ontario.
Why is my tankless water heater showing an error code?
Error codes indicate specific issues—from ignition failures to flow problems to sensor malfunctions. Each brand uses different codes. We can interpret the code and diagnose the underlying problem for all major brands.
How often should a tankless water heater be flushed?
In hard water areas like Central Ontario, annual descaling/flushing is recommended to prevent mineral buildup that reduces efficiency and can damage the heat exchanger. We offer professional descaling service.
Why does my water temperature fluctuate?
This cold water sandwich effect can be caused by undersized units, flow rate issues, or component problems. It's a common complaint that proper diagnosis can usually resolve.
My tankless unit won't ignite. What's wrong?
Ignition failures can be caused by gas supply issues, igniter failure, flame sensor problems, venting issues, or electronic control failures. We systematically diagnose to find the exact cause.
How long do tankless water heaters last?
With proper maintenance including regular descaling, tankless units can last 15-20 years. Neglected units may fail sooner due to scale buildup damaging the heat exchanger.
Can you service all brands of tankless water heaters?
Yes, we service all major brands including Rinnai, Navien, Takagi, Noritz, Bosch, Rheem, and others. Our technicians receive training on multiple brands.
Tankless Water Heater Repair Maintenance Tips
- Schedule annual professional descaling in hard water areas
- Note and report error codes—they provide diagnostic clues
- Keep the area around the unit clear for ventilation
- Don't ignore declining performance or temperature issues
- Consider a water softener to reduce scaling
- Replace the air filter if your unit has one
Tankless Water Heater Repair Service Areas
Professional tankless water heater repair services throughout Central Ontario
Tankless Water Heater Repair Problems? We Can Help.
Don't wait—get your system repaired by certified technicians. 24/7 emergency service available throughout Central Ontario.