Whole-House Repiping in San Antonio, TX
When pipes are too far gone to clean, the fix is to replace them. Whole-house repiping swaps old galvanized or polybutylene supply lines for new PEX or copper — and restores full water pressure to every fixture in the home.
What Whole-House Repiping Is
Repiping means replacing the water supply pipes in your home — the lines that carry water from the main to every faucet, shower, and toilet — with new pipe. In San Antonio we usually replace old lines with PEX (cross-linked polyethylene) or copper. PEX is flexible, resists scale, and can often be run with fewer wall openings. Copper is rigid, long-lasting, and familiar to most homeowners. Which one fits your home depends on the layout, the water, and your preference, and we talk through both before the work starts.
Repiping is the answer when the pipes themselves are the problem. Galvanized steel pipe, common in homes built before the 1960s, rusts from the inside and closes up over decades. Polybutylene pipe, used in many homes from the 1970s through the 1990s, becomes brittle and is prone to leaks. Neither can be cleaned back to full flow once it is far gone. That is why repiping is the star repair for low pressure in the city's older areas — and why San Antonio water pressure repair so often ends here for homes in Alamo Heights, Monte Vista, and Terrell Hills.
Signs Your Home May Need Repiping
- Low pressure at most fixtures, getting worse over the years.
- Only one fixture can run at a time before the others go weak.
- Rusty or discolored water when a faucet is first opened.
- Frequent pinhole leaks in supply lines.
- Your home still has galvanized steel or gray polybutylene supply pipe.
- Descaling or a new regulator did not restore pressure.
If pressure is low at one fixture only, repiping is almost certainly more than you need. See fixture low pressure repair first.
How Repiping Works
- We map the system. We work out which lines feed which fixtures, where the pipe runs, and how to reach it with the least disruption to your home.
- We agree the scope and the price. You get a clear price for the whole job before any work starts, including which material — PEX or copper — will be used.
- We replace the lines. Old supply lines are bypassed and new lines are run, fixture by fixture. Wall openings are kept as small as the layout allows.
- We test every fixture. Pressure and flow are checked at every faucet and shower, and leaks are checked at every connection, before the job is finished.
Repiping is the largest job we do, and it takes longer than a single repair — usually several days for a typical home. We talk through the plan, the order of work, and how water will be available during the job before we start.
What Does Repiping Cost?
Whole-house repiping in San Antonio typically costs $4,000–$15,000, depending on the size of the home, the number of fixtures, the pipe material, and how much of the pipe is accessible. That is a typical range for this type of work, not a fixed quote. We give you a price for your home before any work starts.
Related Services
Repiping often goes with other work. A water softener protects the new pipes from the scale that narrowed the old ones. A new pressure regulator makes sure pressure stays in the safe range for the new lines. If you are not sure whether your pipes need replacing or only cleaning, start with water pressure testing and diagnosis or pipe descaling.
Call San Antonio Water Pressure Pros
Tell us what your water pressure is doing, and we will talk through what happens next and set a time to come to your home.
14570 Calaveras Creek, San Antonio, TX 78223
Frequently Asked Questions
How do I know if my home has galvanized or polybutylene pipe?
Galvanized pipe is steel, gray, and magnetic — a magnet sticks to it. Polybutylene is gray plastic pipe, often with plastic fittings, used in many homes from the 1970s through the 1990s. If you are unsure, we can identify the pipe type during a visit.
Is PEX or copper better for repiping in San Antonio?
Both work well. PEX resists scale and can be run with fewer openings in walls. Copper is rigid and has a long track record. The right choice depends on your home's layout and your preference. We explain both and let you decide.
Will repiping fix low pressure in the whole house?
If narrowed or failing pipe is the cause, yes — new lines restore the full inside diameter, and pressure and flow return to every fixture. If the cause is actually a failed regulator or low street supply, repiping alone will not fix it, which is why testing comes first.