Why Does Only Half My House Have Power?
(What to Check First)
Something’s Not Right — But It Might Not Be as Bad as It Looks
You flip the light switch… nothing. The other side of the house? Working fine. It’s a frustrating and sometimes alarming problem: half your house has power, the other half doesn’t.
Let’s break down why this happens, what you can safely check on your own, and when it’s time to call a licensed electrician. If you’re in St. Clair Shores, Roseville, Grosse Pointe, Warren, Sterling Heights, or surrounding areas, the team at Residential Electric is ready to help.
Common Reasons Only Half Your House Has Power
1. One Hot Leg from the Utility is Lost (Most Common)
Your home’s electrical system runs on two 120-volt “hot legs” provided by the utility (like DTE). If one of those fails — due to a storm, transformer issue, or damaged line — half your circuits will stop working.
Signs this is the issue:
- Lights and outlets are out in large sections
- Large appliances (dryers, ovens) don’t power on fully
- You haven’t tripped any breakers
This is often a utility issue, not something inside your house. But you’ll want a licensed electrician to confirm the cause — and make sure it’s not your main breaker.
2. A Failing Main Breaker or Service Panel
Old or overloaded panels can fail partially, especially if the main breaker or bus bars are corroded or worn. You may not see a tripped breaker, but internal failure could still be cutting power to half your home.
In homes with Federal Pacific, Zinsco, or very old panels, this issue is even more likely — and may be a sign it’s time for a panel upgrade.
If you’re not sure, an electrician can usually diagnose a failing panel in under 10 minutes.
3. Loose or Damaged Wiring at the Main Service Entrance
Sometimes, a wire feeding your panel has come loose or burned out — especially where overhead lines enter the house. This can cause intermittent power loss to part of the panel.
This is dangerous. Don’t try to inspect it yourself. If you see burn marks, hear buzzing, or smell something burning near your electrical panel, call us immediately.
What Can I Check Myself?
Before calling an electrician, try these quick checks:
Look for tripped breakers. Flip them fully OFF, then back ON.
Check for a tripped main breaker (usually a double switch at the top of the panel).
If you have smart plugs or smart switches, see if they’re receiving power.
Ask your neighbors if they’ve lost power — it could confirm a utility issue.
Do not open your main panel or touch any wiring if you’re unsure. It’s not worth the risk.
When to Call an Electrician
If any of the following apply, give us a call:
You’ve lost power to half the house and breakers look fine
Your main breaker won’t reset or is buzzing
Appliances are acting strangely or not fully powering on
You’ve had recent storms or power surges
Your panel is older than 25 years
We’ll quickly diagnose whether it’s an issue with your panel or something the utility needs to fix — and we’ll guide you on next steps either way.
What Will It Cost?
If it’s a utility issue, the fix may be free (but we can confirm it for you). If it’s a panel or main breaker failure, most replacements start around $2,475–$3,500 depending on your home’s size and wiring needs.
We’ll give you upfront pricing and walk you through the options.
Serving St. Clair Shores and Beyond
If you're experiencing power loss in Macomb County, St Clair Shores, Grosse Pointe, Roseville, or a nearby area, don’t wait. These issues can get worse — or even become hazardous — if left unchecked.
Call Residential Electric today
or Schedule a service online.
A Word from a Local Customer
“Half our house suddenly went dark and I was panicking. Residential Electric showed up fast, explained everything clearly, and even called DTE on our behalf. Super grateful!”
— Mary T., St. Clair Shores
We’ll treat your home like our own — and make sure the lights stay on.
Call now to speak to a licensed electrician over the phone immediately.