Knob & Tube Wiring Replacement & Removal

We safely remove and upgrade outdated wiring systems—without damaging the charm of your antique home.

What Is Knob & Tube Wiring?

Knob & tube (K&T) wiring was commonly installed in homes from the 1880s through the 1940s. While innovative in its day, this system no longer meets modern electrical codes or safety expectations. It lacks grounding, has insulation that breaks down over time, and can become a serious fire hazard. Given that the average age of homes in New Hampshire, Maine, and Vermont is some of the oldest in the country, there is a lot of knob and tube in the states we're licensed in!

If your home still contains active knob & tube wiring, it’s time to plan for a safe and sensitive upgrade.

Why Remove It?

No Grounding in an old home in New Hampshire by CJH Electrical

No Grounding

K&T systems can’t support modern grounded outlets or appliances.

Overloaded Circuits in an old home in New Hampshire by CJH Electrical

Overloaded Circuits

Old systems were never meant for today’s power needs.

Aging Materials in an old home in New Hampshire by CJH Electrical

Aging Materials

Insulation becomes brittle, increasing the risk of shorts and fire.

Insurance Headache in an old home in New Hampshire by CJH Electrical

Insurance Headaches

Many providers will not insure homes with active knob & tube wiring.

Our Approach: Clean, Careful, Respectful

At CJH Electrical, we specialize in removing knob & tube wiring from historic homes in a way that respects the structure. We:

- Identify all live K&T circuits

- Develop a step-by-step plan for safe removal

- Replace with modern, grounded wiring to current NEC code

- Carefully fish wires through walls, floors, and ceilings with minimal impact to finishes

What’s Included

  • Full circuit mapping and testing
  • Removal of active K&T wiring
  • New grounded circuits and outlets
  • Panel and breaker upgrades, if needed
  • Permitting and inspection support
  • Final walkthrough and labeling

Service Area

We remove and replace knob & tube wiring in:

- Southern & Central New Hampshire

- Southern Maine

- Eastern Vermont

CJH Electrical LLC

Manchester, NH

Licensed & Insured in NH, ME & VT

Let’s Make Your Home Safer

Don’t wait for a problem. Upgrade your system today—and protect what matters most.

Contact Us