How to heat a cold bathroom without adding a new electrical line
Adding a standard bathroom heater requires running a dedicated 20-amp circuit, which is extremely difficult or impossible without an attic or accessible subpanel wiring. This electrical constraint prevents people from installing the heating they need, forcing them to deal with freezing showers.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Using a plug-in portable ceramic heater near the floor
- 2Running a dedicated 20-amp circuit from the subpanel to support a heated exhaust fan
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“If you add a heater you need a 20 amp dedicated line. I’m in a manufactured home with no attic. So that could be a problem.”source ↗
Hey_KittyKitty · r/HomeImprovement · 1 upvotes
“Yes, I had to run a 20A circuit out of the subpanel for hers. I can shower in a cold bathroom; my wife cannot.”source ↗
NagromYargTrebloc · r/HomeImprovement · 1 upvotes
Where this came up
People with this problem also raised
- 5How do I use and maintain an oil heating system?
- 2Why is my bedroom hotter than the rest of the house at night?
- 3Why is my attic apartment so hot in summer and cold in winter?
- 2Mini-split can't keep house warm when it freezes outside
- 2Why is there condensation and damp spots on walls only on laundry days?
- 5How to know if the blue wire is the C wire