5 Signs Your House Needs Rewiring

Most homes in the OKC Metro Area were built between the 1950s and 2000s. The wiring in those homes was designed for the electrical loads of that era: a few lights, a TV, a refrigerator, maybe central air. Today's homes run 10 times that load. Here are five signs the wiring can't keep up.

1. Your home has aluminum branch wiring

Between roughly 1965 and 1973, copper was expensive and builders used aluminum wiring for 15-amp and 20-amp branch circuits (the wiring that runs to outlets and switches). Aluminum wiring isn't inherently dangerous, but it expands and contracts differently than copper, which loosens connections over time. Loose connections create heat. Heat causes fires.

If your home was built in that era, check. Open a switch or outlet cover (with the breaker off) and look at the wire. Copper is copper-colored. Aluminum is silver.

Options: Full rewire with copper, or remediation with approved aluminum-to-copper connectors (like AlumiConn or COPALUM) at every connection point. We assess which makes sense based on the home's condition.

2. You still have knob-and-tube wiring

Knob-and-tube is the original residential wiring method from before the 1940s. It runs individual hot and neutral wires through ceramic insulators nailed to the framing. No ground wire. No junction boxes at many connections. The insulation is cloth-covered rubber that deteriorates over decades.

The biggest problem isn't the wiring itself when it was new. It's what's happened since: insulation blown over it in the attic (creating fire risk), connections that have been modified by non-electricians over 80 years, and complete absence of grounding.

Most insurance companies in Oklahoma won't write a policy on a home with active knob-and-tube wiring. If you're buying or selling a home with it, rewiring is effectively mandatory.

3. Lights flicker or dim when appliances turn on

Brief dimming when the A/C kicks on is normal: the compressor draws a startup surge. But if lights dim throughout the house, or flicker regularly, or one room dims while another gets brighter, the problem is usually undersized wiring, a failing connection, or a loose service neutral.

A loose neutral is dangerous. It causes voltage to float between the two legs of your service, which can send 150 volts through a 120-volt circuit. That kills electronics and can start fires.

4. Most of your outlets are two-prong (ungrounded)

Two-prong outlets mean there's no ground wire in the circuit. Modern electronics, appliances, and surge protectors all need a ground to function safely. You can't just replace a two-prong outlet with a three-prong outlet and call it grounded. The ground wire needs to actually exist in the wall.

A home full of two-prong outlets typically needs new circuits run from the panel with modern grounded wiring. This can often be done room by room without gutting walls, using techniques like fishing wire through existing wall cavities.

5. Your insurance company flagged the wiring

Insurance inspectors check for aluminum wiring, knob-and-tube, double-tapped breakers, FPE/Zinsco panels, and evidence of amateur work. If your insurer has flagged your electrical system, they're giving you a deadline. Meet it, or they drop the policy.

We work with homeowners in this situation regularly. We can assess what the insurer needs, provide the repair or rewire, and produce documentation for your agent.

What rewiring involves

A whole-home rewire doesn't always mean tearing out every wall. In many Oklahoma homes, we can fish new wire through existing wall cavities, attic spaces, and crawl spaces. The scope depends on the home: a 1,200 sq ft ranch with accessible attic and crawl space is simpler than a two-story with finished walls everywhere.

Every rewire includes a new panel (or panel upgrade if needed), new circuits with proper grounding, AFCI and GFCI protection where code requires, and full permit and inspection.

Get an assessment

Call (405) 436-4776 to schedule a wiring assessment. We'll look at what you have, explain what needs to change, and give you an up front written quote. No pressure.