Furnace Not Igniting
Here's what typically causes this, and why an on-site diagnostic — not a phone guess — is what gets you an accurate estimate.
Igniter Failure
Worn or cracked hot-surface igniter.
Gas Valve Issue
Valve not opening properly.
Flame Sensor Dirty
Safety sensor shutting down ignition.
Why diagnosis matters: A symptom like this can trace back to several different root causes, and the fix — and its cost — depends entirely on which one it is. Roxly doesn't quote a repair price over the phone based on a symptom alone: a technician inspects the equipment on site, tests the likely components, and confirms the actual cause before giving you a firm estimate. That's what makes the quote accurate instead of a guess you find out is wrong after the work starts.
Is this dangerous?
Gas ignition issues should always be diagnosed by a technician rather than DIY-troubleshot.
How fast can this be fixed?
Igniter and flame sensor issues are often same-visit repairs once diagnosed.