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Knob & Tube Wiring Services

Home
Electrical
Knob & Tube Wiring

Knob & Tube Wiring is an outdated electrical system commonly found in homes built before 1950, and it poses serious safety and insurance challenges if not replaced. At SumZero, we provide fast, code-compliant Knob & Tube Wiring replacement services across Massachusetts—giving you a safer, more energy-efficient home with lasting peace of mind.

Knob and Tube Wiring Replacement: Why Now Is the Right Time

If your home still has knob and tube wiring, it’s more than just outdated—it may be putting your safety, insurance eligibility, and energy efficiency at risk. Replacing this outdated system starts with one smart decision: acting before a small issue becomes a costly emergency.

Why Outdated Electrical Systems Can Be Hazardous

Many older homes still contain wiring that's no longer up to today’s electrical demand or safety standards. Here’s why that's a big concern:

  • Wires lack grounding, increasing fire and shock risk
  • The insulation around wires breaks down over time
  • Adding modern appliances can overload the system
"Many homeowners don’t realize that insurance companies may deny or cancel coverage if knob and tube wiring remains in place—regardless of its condition."

Benefits of a Timely Home Wiring Upgrade

Transitioning to modern wiring improves your home’s safety and performance while also enhancing property value. You’ll also enjoy:

  • Lower risk of electrical fires or short circuits
  • Modernized system ready to handle today’s devices
  • Greater peace of mind knowing your home is up to code

Bold move, smarter home—upgrading isn’t just about compliance, it’s about protecting what matters most.

How to Upgrade Knob and Tube Wiring in Your Home

Taking on a knob and tube rewiring project can feel overwhelming, but with the right professional help, it's a smooth and worthwhile investment into your home's long-term stability.

Avoiding Common Old Home Electrical Issues

Older homes often come with surprise electrical challenges. Here’s how to ensure a smart, safe upgrade:

  1. Start with a professional inspection
  2. Create a phased-out plan—prioritize key rooms first
  3. Ensure all work meets Massachusetts electrical codes
  4. Check eligibility for programs from trusted sources like Mass Save®

What a Full Home Wiring Upgrade Includes

  • Removal of existing knob and tube elements
  • Replacement with modern, grounded wires
  • Upgraded outlets and safer breaker panels

And the bonus? Homes with modern wiring are often more energy-efficient—potentially lowering your utility bills in the long run.

Ready to replace outdated electrical systems and put safety first? Contact us for a consultation and take control of your home’s future—safely, swiftly, and with confidence.

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What Local Homeowners Are Saying

See how SumZero has helped local homeowners stay comfortable year-round with energy-efficient heat pump solutions.

David and Wandersen have an amazing team! I have never worked with a more professional, knowledgeable and courteous team before. Every single person that works with Sum Zero was impressive. They were willing to answer all of our questions, provide accurate quotes and were always open to additions as the jobs moved forward. I welcomed them in my home for a week and a half of work and would do so again in a heartbeat. You cannot go wrong with hiring Sum Zero!
Karen C.
Total professionals , Top notch product and service...
ROBERT SCHIFANO
Recently had mini splits installed in our 3 upstairs bedrooms. Units work well and SumZero was great to deal with. Initially had some issues with the condenser unit location and lines being run on the front of the house, but they were quick to remedy the situation until we were satisfied. Thanks to Wanderson and Paul and the rest of the crew for their help with everything.
Michael A

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