How to Safely Replace Knob and Tube Wiring in Your Home

How to Safely Replace Knob and Tube Wiring in Your Home


Replacing knob and tube wiring in your home can seem like a daunting task, but with proper planning and by following safety precautions, it can be done safely. Knob and tube wiring was commonly installed in homes built before 1950 and has largely been phased out due to safety concerns. While not inherently dangerous, knob and tube wiring lacks modern safety features like grounding and can be a fire hazard if damaged or overloaded. By taking the right steps, you can upgrade to modern wiring and enjoy peace of mind knowing your home's electrical system is safe and up-to-date.

Reasons to Replace Knob and Tube Wiring

There are several compelling reasons to replace knob and tube wiring:



Resale Value

Dangers of DIY Knob and Tube Wiring Replacement

While it's tempting to replace knob and tube wiring yourself to save money, there are risks:

For these reasons, it is strongly recommended to hire a licensed electrician rather than attempting DIY replacement of knob and tube wiring.

Hiring an Electrician

When hiring an electrician, be sure to:

Step-by-Step Process for Replacement

A typical knob and tube replacement project involves the following steps:


Wiring Removal

New Wiring Installation

Testing and Completion

Costs of Replacement

Depending on your home's size and existing wiring, costs typically range:

While not cheap, this significant upgrade is a smart investment improving your home's safety, functionality, and resale value for decades to come.


With proper planning and hiring a pro, you can successfully upgrade outdated wiring for a safer, more reliable electrical system. Contact reputable electricians in your area for quotes on knob and tube replacement costs and your options.