Who to call · Electrician
Knob-and-tube wiring in an old home? Here's Who to Call
Knob-and-tube wiring was standard before the 1950s, but it has no ground wire, its insulation grows brittle with age, and it overheats when buried in modern insulation. Many insurers now refuse or surcharge homes that still run on it. An electrician can inspect what remains active, replace the highest-risk runs, and rewire circuits to a grounded, code-compliant system.
What's going on
How to fix knob-and-tube wiring in an old home
Some "knob-and-tube wiring in an old home" cases look simple, but getting it wrong almost always costs more than calling a pro: hidden leaks, fire risk, code violations, and insurance headaches. A licensed electrician will diagnose the exact cause, use the right professional tools, and stand behind the repair. Most local pros offer free quotes and can visit the same day or the next.
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Symptoms to look for
- 01
Ceramic knobs and tubes visible in the attic or basement
- 02
Two-prong outlets with no ground throughout the house
- 03
Insurer flags the wiring or declines coverage
- 04
Warm spots on walls or a faint burning smell near old fixtures
FAQ
Frequently asked questions
Who should I call for: Knob-and-tube wiring in an old home?
Call a licensed electrician. Electricians have the specialized training, tools, and insurance to diagnose knob-and-tube wiring in an old home safely and stand behind the fix. Most offer free quotes and can visit the same day or the next.
Can I fix this myself?
Some minor cases can be handled DIY, but most require a licensed electrician to avoid costly rework and safety risks. A free quote takes under a minute.
How fast can a pro come out?
Most electricians offer same-day or next-day visits for non-emergency issues. True emergencies (burst pipes, gas smell, no heat in winter) are typically handled within 1–4 hours.
How much does it cost to fix?
Costs vary by severity and your location. Submit a free quote request to get real pricing from local pros in your area.
What are the signs of: Knob-and-tube wiring in an old home?
Ceramic knobs and tubes visible in the attic or basement. Two-prong outlets with no ground throughout the house. Insurer flags the wiring or declines coverage. Warm spots on walls or a faint burning smell near old fixtures.