Zinsco and Sylvania-Zinsco Panels on a Home Inspection
If your report says Zinsco, Sylvania or GTE-Sylvania, plan on a new panel. The documented problem is breakers arcing and burning where they clip onto the bus, and the reference sources don't recommend repairing them. It's a one-day job with a known price, so get the quote and the insurance answer before your deadline.
I'm Wes Johnston, a Realtor with Trueblood Real Estate in Fishers. Before real estate I earned a construction engineering management degree from Purdue and spent about ten years designing custom homes and running their construction in Hamilton County. I'm not a home inspector, electrician, plumber or engineer, and this isn't a substitute for one. It's how I explain these findings to my own clients. Sources are linked as you go.
Short answer: Zinsco panels are flagged for breakers that can overheat and burn at the bus connection and may not trip on an overload. The usual fix is a full panel replacement, not new breakers. Negotiate it as a repair by a licensed electrician with a permit, or a credit based on a written quote.
- Typical cost to fix
- About $1,500 to $4,000 to replace a Zinsco or Federal Pacific panel, including some wiring updates.
- Who to call
- A licensed electrical contractor, with a permit. Your insurance agent, early in the inspection period.
- Deal-breaker?
- Not by itself. It becomes a problem if you can't get insurance or can't agree on who pays.
Cost source: HomeAdvisor electrical panel cost guide, updated June 17, 2026, national figures
- 01What is a Zinsco panel and how do I know if I have one?
- 02What's wrong with Zinsco panels?
- 03Are Zinsco panels dangerous? How often do the breakers fail?
- 04Was there a Zinsco panel recall?
- 05Can you replace Zinsco breakers instead of the whole panel?
- 06Can I get homeowners insurance with a Zinsco panel?
- 07How much does it cost to replace a Zinsco panel?
- 08Should I ask the seller to replace a Zinsco panel?
- 09I'm selling a house with a Zinsco panel. Should I replace it first?
What is a Zinsco panel and how do I know if I have one?
Zinsco is a brand of residential electrical panel and breaker. The same design was also sold as Sylvania and GTE-Sylvania, and InspectApedia groups Kearney equipment with it as being of "the same product design and origin" (InspectApedia, Zinsco panels). So a Sylvania label on the door doesn't get you off the hook.
You or the inspector find out by reading the label inside the panel door. Don't take the inner cover off yourself; that's live equipment and an electrician's job.
Typical report wording:
- "Zinsco/Sylvania panel observed. These panels are known for breaker-to-bus connection problems. Recommend evaluation by a licensed electrician."
- "Recommend replacement of the panel."
- "Signs of overheating/scorching observed at breaker." If you see this one, it's no longer a brand note. It's a condition, and it needs an electrician now.
This is an older-house finding. In central Indiana, a 1990s or newer Hamilton County subdivision house is unlikely to have one unless an old panel was reused.
What's wrong with Zinsco panels?
InspectApedia, whose editor has collected field reports on these panels since 1996, describes the failure points (InspectApedia):
- Arcing and burn-ups where the breaker clips onto the bus. The suspected cause is the clip-to-bus contact combined with an aluminum bus bar.
- Breakers that fail to trip on overcurrent, which is the one job a breaker has.
- Burned contact points and breaker cases that blow out.
The first one is the reason electricians don't like to repair these. When a breaker has been arcing against the bus, the bus itself can be damaged, and you can't fix that by swapping the breaker.
Are Zinsco panels dangerous? How often do the breakers fail?
Honest answer: the testing is limited, and the best source says so. InspectApedia reports that in testing to date, nearly 32% of Zinsco breakers failed to trip as UL requires, and elsewhere on the same page gives about 25%, compared with much less than 1% for competitors. The page doesn't reconcile the two numbers, and it states plainly that it doesn't have "statistically solid data" for an unequivocal replace-it argument (InspectApedia). It recommends replacement anyway.
I land in the same place. A panel can sit there working for decades, and nobody can tell you whether yours will trip when it matters. That uncertainty, plus the insurance question below, is why buyers' electricians recommend replacement and why the cost belongs in your negotiation.
Until then, follow the CPSC's general advice for any breaker or fuse: don't overload circuits with heaters and other high-draw appliances, and when a breaker trips, find out why before you reset it (CPSC).
Was there a Zinsco panel recall?
No. InspectApedia states there was never a mandatory recall of Zinsco or Sylvania panels (InspectApedia). You'll still see "recalled panels" in article headlines. That's shorthand, not a recall record.
No recall cuts two ways. Nobody is going to replace the panel for free, and there's no manufacturer program to file with. And "it was never recalled" doesn't mean an inspector, electrician or insurer will be comfortable with it.
Can you replace Zinsco breakers instead of the whole panel?
Replacement Zinsco-style breakers and even copper-plated bus bars are sold. InspectApedia says it does not recommend installing "replacement" Zinsco breakers, and that the effectiveness of those products is unclear without independent testing (InspectApedia).
Think of it like putting new tires on a car with a cracked axle. The breaker is the part you can see, but the connection to the bus is where the trouble lives. If a seller's fix is "we replaced the breakers," ask for the panel.
Can I get homeowners insurance with a Zinsco panel?
Maybe. Kin Insurance names Zinsco, including some Sylvania-branded versions, among the panels where some insurers refuse to cover or non-renew homes. Owners can be denied when shopping for a policy, non-renewed at the end of a term, or given an exclusion for electrical claims. Replacing the panel may help get or keep coverage (Kin Insurance, updated April 30, 2026).
Make one phone call before you do anything else: ask the agent quoting your policy, "Will you write this house with a Zinsco panel?" Ask during the inspection period, when the answer can still change the deal, and get it in writing if you can.
How much does it cost to replace a Zinsco panel?
HomeAdvisor puts replacing a Federal Pacific or Zinsco panel at $1,500 to $4,000, including some wiring updates. A 100-amp panel runs $800 to $1,500 and a 200-amp panel $1,300 to $2,000. Budget $150 to $300 for permits and drywall patching. A straight panel swap is about 4 to 8 hours of labor, 20 to 30 hours if related wiring is involved (HomeAdvisor, updated June 17, 2026, national figures).
If the electrician only comes out to evaluate first, HomeAdvisor lists licensed electricians at $50 to $130 an hour, with a $100 to $200 service call for the first hour (HomeAdvisor, updated June 19, 2026). Ask them to quote the replacement on the same visit.
When I read a panel quote, I look for four things: the amperage of the new panel, who pulls the permit, whether the meter base or service entrance is included, and what happens if they find damaged wire once the old panel is out. A quote that answers those is one you can negotiate with.
A Zinsco is often in a house with other older electrical. If the report also mentions ungrounded outlets or aluminum branch wiring, have the same electrician price it all on one visit.
Should I ask the seller to replace a Zinsco panel?
Yes. It's a reasonable request with a known price. The choices:
- Seller replaces it before closing, by a licensed electrical contractor, with a permit and final inspection, and you get the invoice. Best when your insurer won't write the policy as is.
- Credit or price reduction equal to a written quote, when your insurer is fine and you'd rather hire your own electrician the week you move in.
- Walk away only if you can't get coverage and the seller won't budge.
You can absolutely buy a house with a Zinsco panel. Just get the electrician's quote and your insurer's answer before the deadline, so you're negotiating with numbers.
Licensing check: electricians in Indiana are licensed locally, not by the state. In Indianapolis that's the Department of Business and Neighborhood Services, which covers the city but not Lawrence, Beech Grove, Speedway or Southport (City of Indianapolis, Contractor Licenses, read October 2026). Ask the contractor for the license number from the city or county where the house is. More on deadlines: how the inspection period works in Indiana.
I'm selling a house with a Zinsco panel. Should I replace it first?
Usually, yes. Every buyer's inspector will write it up, some buyers' insurers will balk, and a buyer's repair request under deadline tends to come in higher than a quote you got on your own schedule. Replace it, keep the permit and invoice, and list "new electrical panel" as a feature.
If you'd rather not, at least get the quote so you can price the house or offer a credit with confidence, and ask me how it belongs on the Indiana seller's disclosure. More: what to fix before selling.
Why a Realtor Who Built Houses Reads Reports Differently
A home inspection report runs dozens of pages, and almost every item ends with "recommend evaluation by a qualified professional." That wording is there for the inspector's protection. It doesn't tell you which items are a quick fix and which ones change the deal.
I spent about ten years designing houses and running their construction before I sold them. When my clients get their report, we go through it together and sort it into what to ask for, what to take as a credit, what to just fix yourself later, and what needs a specialist before the inspection deadline. If you're buying or selling in central Indiana, I'm happy to do the same for you.
Construction engineer turned Realtor. Straight answers before you sign.
Send Me the Page That Worries You
Tell me the address and the finding. I'll tell you how serious it looks from a builder's point of view and how it usually gets handled in a deal.
Send a MessageWhat's Your Home Worth?
Selling an older home? Start with a realistic price based on recent local sales.
Have a Panel Question?
Send the address and the line from the report. I'll get back to you with how serious it looks and how it usually gets handled.
General guidance from a Realtor with a construction background. Hire the licensed trade for the diagnosis and the fix.
General information from a Realtor with a construction background, not electrical, insurance or legal advice. Cost ranges are national figures from HomeAdvisor (updated June 2026); Indianapolis-area quotes vary. Failure details are from InspectApedia. Have a licensed electrical contractor evaluate the panel, and ask your insurer directly about coverage.