What dielectric union means
A dielectric union joins two different metals, such as copper and steel, with an insulating barrier so they do not corrode each other.
Where it matters on a plumbing job
Water heater connections are the common place for them. When you see heavy corrosion at a copper to steel joint, a dielectric union is the fix to quote.
What it costs
Koira's water heater installation cost guide puts a typical job at $1,350, with most between $890 to $2,400. The guide shows its sources and what moves the price.
Work it out
- Cost guide: Water heater installation cost
- Licensing: Plumbing license rules by state
- Tools, templates and guides: Free plumbing resources