Water Heater Replacement Cost in Pennsylvania
By the Duncan Family Plumbing team · September 10, 2026
A standard tank water heater replacement in Pennsylvania typically runs $900 to $1,800 installed, while a tankless conversion runs $3,000 to $4,500. Gas units usually cost more upfront than electric but less to run month to month. Your exact price depends on tank size, venting, and whether any code updates are needed.
Tank vs. Tankless
A standard tank is the cheaper install and the familiar choice — swap the old one, connect the same lines, done in a few hours. Tankless units cost more upfront because they often need new venting and sometimes a gas line upgrade, but they deliver endless hot water and typically last longer.
Gas vs. Electric
Gas water heaters usually cost a bit more to install than electric, partly because of venting requirements, but they heat water faster and cost less to run over time in most of Pennsylvania. Electric units are simpler to install but can mean higher monthly utility bills.
What Drives the Price Up
- Switching from electric to gas, or tank to tankless — new lines and venting add labor.
- A tight or hard-to-reach installation spot, like a small closet or crawlspace.
- Code updates your old install never had, like an expansion tank or updated venting.
- Removal and disposal of a leaking or very old unit.
Getting a Real Number
General ranges help you plan, but the only way to know your actual price is to have someone look at your specific setup. We give you a flat-rate quote on the spot, before any work starts, so there’s no guessing.