Owning one of Stoneham’s beautiful, historic homes comes with a sense of pride and a connection to our community’s past. That classic architecture is a treasure, but preserving that treasure means tending to its oldest systems. One of the most critical is the electrical wiring. Many homes built in a bygone era still rely on knob and tube wiring, a system that, while once effective, now poses serious risks in a world filled with modern technology. For today’s homeowner, living with this old wiring can create a quiet, persistent worry about safety. JMR Electric is Stoneham’s dedicated local expert, committed to protecting families by performing professional knob and tube removal and replacement. A complete system upgrade offers peace of mind, a profound increase in safety, and an electrical foundation ready for all of today’s demands.
To make the best decision for your home, you first need to understand what is hidden behind your walls. Knob and tube (K&T) was the go-to method for wiring houses from the 1880s through the 1940s. Its design is quite different from what electricians install today, and its components are very distinct.
You can often spot K&T wiring in unfinished areas like basements, crawlspaces, or attics. You will see individual electrical wires protected by a black or white rubberized cloth sheath. These wires are meticulously routed through porcelain knob and tube insulators. The white, spool-like ceramic knobs hold the wires securely alongside wooden joists, while the longer ceramic tubes act as protective sleeves where wires must pass through the wood framing. A defining feature of this knob and tube electric system is the separation of the hot and neutral wires, which run parallel to each other. The most critical difference, from a modern safety standpoint, is its complete lack of a ground wire. Its amperage capacity is also extremely limited, making it completely unsuitable for the power needs of a contemporary household.
A home with knob and tube wiring might not show any immediate signs of trouble, but the risks are substantial and grow with each passing year. Being aware of these specific hazards is vital for any responsible homeowner. For anyone considering an appointment to remove knob and tube wiring, understanding the reasons behind the recommendation is paramount.
Replacing a home’s entire nervous system is a major project. With over 14 years of experience, JMR Electric has refined a careful, homeowner-focused process to make the experience as straightforward as possible. Our knob and tube wiring services are built on a foundation of safety, efficiency, and respect for your home.
The surest way is a visual inspection of an unfinished basement, crawlspace, or attic. Look for the distinct white ceramic knobs and tubes holding wires to and through the wooden joists. The presence of only two-prong outlets throughout an older home is another strong indicator.
To satisfy insurance requirements and for genuine safety, all active knob and tube circuits should be completely replaced. Wiring that is no longer part of a live circuit can sometimes be safely abandoned in place, but all electrical current should be running through a modern, grounded system.
The project timeline is shaped by the size of your house and how much of the wiring needs replacement. A typical home can take from a few days to a couple of weeks. We provide a clear and realistic timeline with our written estimate.
The cost is specific to each home, depending on its size, the accessibility of the wiring, and the number of fixtures and outlets. We provide free, no-obligation estimates to give you a precise and reliable cost for your project.
Yes, in almost all situations. Our electricians work diligently to minimize disruption to your daily life. We manage power shutdowns strategically, often one area at a time, to keep essential services like your kitchen and bathrooms operational.
Don’t let the uncertainty of outdated wiring linger for another day. Take a confident, proactive step toward securing your property and protecting what matters most. Contact our team to schedule your free, no-pressure estimate for knob and tube removal. You can also learn about all our complete range of electrical services and have our experts answer all your questions. Trust the professionals at JMR Electric to bring your home’s electrical system safely into the 21st century.


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EXCELLENT Based on 69 reviews Posted on Brian CaulfieldTrustindex verifies that the original source of the review is Google. Guy and Zach were great. Showed up on time, talked me through our issues and resolved quickly and inline with the estimate.Posted on Joe MariniTrustindex verifies that the original source of the review is Google. Amazing experience working with JMR Electric. From start to finish they did an unbelievable job and I would not hesitate to recommend them to friends and family. Thank you so much!Posted on Connie GaoTrustindex verifies that the original source of the review is Google. I hired JMR recently to electrify my detached garage and shed. JMR was very prompt in their communication and provided the estimate quickly after viewing the site. Their pricing was very reasonable and they were able to schedule me in quickly. The project required a large trench to pipe the electrical from the basement and a subpanel in the garage. The crew was very respectful and discussed the setup, wiring and outlet placement decisions with me thoroughly before proceeding with any execution. They were able to place the wiring and piping in discrete locations to minimize the visual cutter and brought over sufficient power for a future EV charger. Jeff (the owner) also stepped in personally to help with the job when some of the crew were out sick in order to keep the project on track. The inspection was completed successfully soon after project execution. I really appreciated the level of service and care from the JMR team and will be calling them back for future electrical needs.Posted on Mike RosenblattTrustindex verifies that the original source of the review is Google. JMR did a great job hooking my dust collector up to 220V through a relay attached to my control system for my shop. A slightly different project requiring collaboration that worked out great. Turnaround from request to completion was 1 week. Couldn't have asked for better service.Posted on Ting LeeTrustindex verifies that the original source of the review is Google. I've worked with Jeff and the JMR team many times over the past few years, and the crew is great! It is always a great experience; the team is always happy to help in a pinch, always having a great eye for detail, and providing recommendations when needed! They are always responsive too. I love having the opportunity to work with them on projects.Posted on Michael ChiuTrustindex verifies that the original source of the review is Google. Installed new electrical service for my 3-family + car charger. Neat work, completed quickly and good communication.Posted on Linda Levin-ScherzTrustindex verifies that the original source of the review is Google. We've a lot of electrical work done by JMR and they are excellent. They did the electrical for a new bathroom, upgraded our panel, installed outdoor fixtures, and took care of numerous other issues. They are prompt, professional, and knowledgeable. We highly recommend them.Posted on Michael HendrixTrustindex verifies that the original source of the review is Google. JMR Electric is the tops. Great communication, super organized, and really nice folks. We've used them for many different jobs, (swapping out a breaker, upgrading outlets) and are always happy.Posted on Jordan LiebermanTrustindex verifies that the original source of the review is Google. Highly recommend the folks at JMR! They do great work, are super friendly, and always on time (a rarity in the contractor business).Posted on Alex SchultzTrustindex verifies that the original source of the review is Google. We've had nothing but good experiences with JMR. We first reached out about a fairly significant troubleshooting/rewiring project about a year ago. Since then, we've gotten two more electrical projects done and both times we didn't hesitate to go straight to JMR again! We've always been pleased with the work experience and final product. The whole team is respectful and communicative - I particularly appreciate that Ed and Guy are always willing to answer questions and make sure expectations are clear. Pricing is clear and reasonable, work is tidy and well executed.
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