Tankless Water Heater Repair in Little Italy, Toronto

Tankless water heaters are reliable, but they're not maintenance-free. When your unit displays an error code, stops producing hot water, or isn't performing like it should, Aspen Home Comfort has the expertise to diagnose and repair it quickly.

Common Tankless Water Heater Problems

Error codes on the display — each code points to a specific issue we can diagnose
No hot water — gas supply problems, ignition failure, or flow sensor issues
Fluctuating water temperature — flow rate problems or scaling in the heat exchanger
Unit won't ignite — gas valve, ignition pack, or venting issues
Low water pressure — clogged inlet filter or scale buildup
Strange noises — scale deposits in the heat exchanger or fan motor problems
Unit shuts off mid-use — overheating protection, venting issues, or sensor failures

Brands We Repair

Our technicians are trained on all major tankless brands:

Navien — NCB, NPE, and NPN series
Rinnai — RU and RE series
Noritz — EZ and NR series
Bosch — Greentherm and Therm series
Takagi and other brands

Why Tankless Repair Requires Specialists

Tankless water heaters are more complex than traditional tanks, with electronic controls, sensors, and sealed combustion systems. Attempting repairs without proper training can void your warranty or create safety hazards. Our licensed technicians have specific training on tankless systems.

Our Repair Process

Diagnosis — we read error codes and test system components
Upfront quote — you know the cost before we proceed
Expert repair — using manufacturer-specified parts
System flush (if needed) — clearing scale buildup that may have caused the issue
Full testing — verifying proper operation across all flow rates

Book Your Repair in Little Italy