Bradford White tankless water heater repair
When a Bradford White tankless water heater stops delivering hot water, the cause is rarely obvious from the outside. These units — including the condensing Infiniti K series and the Infiniti L tankless line — are sold and installed through professional channels for a reason: they pair a gas burner with electronic sensors, a venting system, and water-flow controls that all have to work together.
HeatLand Heating & Cooling has served Metro Vancouver and the Fraser Valley since 1999. We’re a family-run company, fully licensed and insured, with TSBC-certified gas fitters on every gas appliance call. We service all major brands, and Bradford White tankless units are a regular part of our repair work.
This guide explains the most common failure patterns we see, what you can safely check yourself, and when it’s time to call.
Common Bradford White Tankless Problems We Repair
Most repair calls for Bradford White Infiniti K and Infiniti L units fall into a handful of patterns. No hot water at all usually points to an ignition-related fault, a gas supply issue, or a control lockout. Water that runs hot then cold often traces to flow-sensing problems or minimum-flow issues at low-demand fixtures. Reduced hot water output over time is the classic signature of scale buildup inside the heat exchanger — a real factor in parts of Metro Vancouver and the Fraser Valley depending on local water conditions. Condensing units like the Infiniti K also have condensate drainage that can clog or freeze, triggering shutdowns. Venting obstructions — from debris, nests, or snow at the termination — cause safety lockouts as well. Each of these has a distinct diagnostic path, which is why a proper on-site assessment beats guesswork or parts-swapping. Our technicians test gas pressure, inspect venting, check the condensate path, and read the unit’s diagnostic history before recommending a repair.
What to Check Before You Call
A few safe checks can save you a service call — or give our technician a head start. Confirm the unit has power: check the breaker and any dedicated switch or outlet serving the heater. Confirm other gas appliances in the home are working, which tells you whether gas supply to the house is intact. Make sure the hot-water tap you’re testing is opened fully — tankless units need a minimum flow to fire. Look at the unit’s display and note any error code shown, plus what the unit was doing when the problem started. Do not open the cabinet, adjust gas valves, or disconnect venting yourself — that work legally requires a licensed gas fitter in BC. Important safety note: if you ever smell gas or suspect carbon monoxide, stop troubleshooting immediately, leave the building, and call a TSBC-licensed technician and your gas utility from outside.
Repair or Replace? How We Advise
Not every fault justifies a repair. When we assess a Bradford White tankless unit, we weigh the age of the unit, the nature of the failure, and parts availability. A flow sensor or ignition component on a well-maintained Infiniti unit is usually a straightforward repair worth doing. A heavily scaled heat exchanger on an older unit that was never descaled is a harder call — the repair may cost a significant fraction of a new installation, and other components have aged alongside it. Because Bradford White sells through professional installers, parts sourcing is part of our normal workflow, and we’ll tell you honestly how long a part will take to arrive. We put every recommendation in a written quote so you can compare repair versus replacement on real numbers for your specific unit, not generic rules of thumb.
Why Use a TSBC-Certified Gas Fitter
In British Columbia, gas appliance repair isn’t a DIY or handyman job — Technical Safety BC requires licensed gas fitters for work on gas-fired equipment. That’s not bureaucracy; tankless water heaters involve sealed combustion, gas pressure adjustment, and flue-gas venting, and errors in any of those can create carbon monoxide or fire hazards. HeatLand’s technicians are TSBC-certified, and the company is licensed and insured, so the work on your Bradford White unit is done to code and documented. As a family-run company serving Metro Vancouver and the Fraser Valley since 1999, we also stand behind the repair after we leave. If you’re weighing a repair against replacement, we offer financing on new installations, and every job — repair or replace — starts with a clear written quote so there are no surprises.
Quick Checklist
- Check the breaker and power switch serving the unit
- Confirm other gas appliances in the home still work
- Open the hot tap fully — tankless units need minimum flow to fire
- Note any error code on the display and when the problem started
- Never open the cabinet or touch gas connections yourself
- Gas smell or suspected CO: leave the building and call a licensed technician
| Symptom | Likely Category | Who Should Handle It |
|---|---|---|
| No hot water at all | Ignition, gas supply, or control lockout | TSBC-certified gas fitter |
| Hot-then-cold water | Flow sensing or minimum-flow issue | Licensed technician |
| Gradually weaker hot water | Scale buildup in heat exchanger | Professional descaling service |
| Unit shuts down in cold weather | Condensate or vent blockage | Licensed technician |
| Gas smell near the unit | Possible gas leak — emergency | Leave home, call licensed gas fitter and utility |
Frequently Asked Questions
Can I repair a Bradford White tankless water heater myself?
You can safely check power, gas supply to other appliances, and note error codes, but any work inside the unit — burners, gas valves, venting, sensors — must be done by a TSBC-licensed gas fitter in BC. Bradford White units are professionally installed products, and opening the cabinet yourself can create safety risks and void manufacturer support.
Why does my Bradford White tankless run hot then cold?
This pattern usually involves flow sensing or minimum-flow behaviour: the unit fires when it detects sufficient water flow and shuts down when flow drops below its threshold. It can also stem from scale restricting flow or a mixing issue at the fixture. A diagnostic visit identifies which factor applies to your unit and plumbing layout.
How quickly can HeatLand repair a Bradford White tankless in Metro Vancouver?
We serve all of Metro Vancouver and the Fraser Valley, and most diagnostics are scheduled promptly. Repair timelines depend on parts: many common components are sourced quickly through professional supply channels, and we tell you the expected timeline in your written quote before any work begins.
Is it worth repairing an older Bradford White tankless unit?
It depends on the unit’s age, maintenance history, and the failed component. A simple sensor repair on a maintained unit is usually worthwhile; a badly scaled heat exchanger on a neglected older unit may not be. We assess on-site and give you a written repair quote alongside a replacement option, with financing available, so you can decide on real numbers.
Reviewed by the HeatLand Heating & Cooling team — licensed HVAC contractor serving Metro Vancouver & the Fraser Valley since 1999. Specifications and rebate programs change; confirm current details with a written quote. If you smell gas or suspect carbon monoxide, stop troubleshooting, leave the area, and call a licensed technician or 911.