Repiping a Well Home: PEX, Copper & Smart Upgrades

We recently got a call from a homeowner — let’s call him Mark — who was getting serious about repiping his single-story home on a well. Mark had done his homework, and he came to the call with a whole list of questions: PEX or copper for a well system? Should he add a hot water recirculation line while the walls were open? Was it finally time to retire his 30-year-old water heater that had somehow kept chugging along?

We walked through each of his questions step by step, and it turned into the kind of conversation many well-water homeowners need but rarely get. If you’re in a similar spot, here’s how we think through repiping and upgrades on a home that runs on a well.

PEX vs. Copper on a Well System

Mark’s first question was simple: “On a home on a well, what’s your recommendation — PEX or copper?” The real answer is: it depends on your water, your home, and your surroundings.

Both PEX and copper can work very well on well water, but each has clear pros and cons.

Pros and cons of PEX on well water

We explained to Mark that PEX is often the more budget-friendly and labor-efficient option:

• Lower material cost than copper
• Faster installation with fewer fittings and joints
• Flexibility makes it easier to route through tight spaces

However, we also shared an important caution we always bring up with well homes in less-developed areas: PEX is more susceptible to damage from rodents if they have access to crawlspaces or attics. If there’s any history of rodent activity around the home, that risk has to be taken seriously.

Pros and cons of copper on well water

On the copper side, we told Mark that copper is the “hardier” choice:

• More resistant to rodent damage than PEX
• Long, proven track record in plumbing systems
• Handles higher temperatures and pressures very well

He was worried his slightly acidic well water might “eat through” copper over time. We reassured him that properly installed copper (especially when combined with water treatment if needed) holds up well on most well systems. If well water is very aggressive, we’ll typically suggest doing a water test first and possibly adding filtration or softening.

Choosing Copper Type: M vs. L

Once Mark leaned toward copper because of possible rodent activity, his next question was, “What type of copper do you recommend?” We usually recommend Type M copper for most standard residential repipes.

Type M strikes a good balance of:

• Durability for typical residential pressures
• Lower cost than heavier types
• Code compliance in most areas for domestic water lines

However, we told Mark that if he were to add a strong recirculation system or if there were unusually high pressures, we might step up to Type L in specific parts of the system for extra wall thickness and longevity. The exact choice is something we finalize after we see the home, test pressures, and understand how the system will be used.

Adding a Hot Water Recirculation Line

Mark’s bathroom was at one end of the house and his well and water heater were at the other. “It takes forever to get hot water,” he said, and he was right to think that repiping time is the perfect time to add a recirculation line.

Here’s what we walked through with him.

Why a dedicated recirculation line makes sense

On a single-level home, a dedicated recirculation line can:

• Deliver almost instant hot water to far-away fixtures
• Waste less water because you’re not running the tap while you wait
• Work seamlessly with a properly sized pump and controls

We usually recommend adding the dedicated return line while the piping is being redone, because walls and access panels are already being opened. It is far cheaper and cleaner to do it then than to circle back years later and open everything up again.

Control options for recirculation systems

We also explained the control options we typically discuss with homeowners:

• Continuous circulation (simplest but uses more energy)
• Timer-based (runs only during typical usage hours)
• On-demand or motion-activated (runs only when needed)

The right choice depends on lifestyle and priorities — comfort, energy savings, or a compromise between the two.

Upgrading a 30-Year-Old Water Heater

Mark’s water heater was over 30 years old — an impressive life for any tank. He had been very proactive, replacing the anode rod every five years, which is probably why it had lasted so long. Still, with a full repipe on the horizon, he was nervous about moving such an old tank around and having it start leaking after all that work.

We generally tell homeowners that once a tank water heater is around the 15–20 year mark, they’re living on borrowed time. At 30 years, even a well-maintained tank has done its job. If you’re spending the money to open walls, reroute piping, and add recirculation, that is the ideal moment to install a new water heater.

Brands, warranties, and anode rod choices

Mark asked about brands like State, American Standard, and Bradford White. We told him what we told him on the phone: most major tank-style water heaters are quite similar these days, and we tend to install the brands we’ve had consistent success with and good customer service from.

We also covered warranties and anode rods:

• Standard warranty: commonly 6-year tank and parts
• 10-year upgrade: typically achieved by adding a second anode rod
• Stock anode material: usually aluminum by default
• Optional upgrades: magnesium, zinc, or powered anodes (great for sulfur odors)

On a well system without sulfur smell issues, we’re usually comfortable starting with the stock aluminum anode or, in some cases, switching to magnesium if water test results look good. The key is to keep up with periodic inspection and replacement so the tank itself doesn’t start corroding.

Why a Site Visit Matters for Repiping Estimates

Before we wrapped up, Mark asked for a rough ballpark on repiping his 2,000-square-foot, single-level home in copper vs. PEX. We were honest with him: any meaningful number would just be guessing without seeing the home.

For a whole-house repipe, we need to look at:

• Crawlspace or attic access
• Existing pipe routes and lengths
• Wall construction and how much drywall needs opening
• Well equipment, pressure, and filtration
• Locations of bathrooms, kitchen, and laundry

We explained that we personally handle the estimating and the work, and we coordinate with trusted drywall and painting pros to put everything back together once the plumbing is done. That way, homeowners like Mark get one cohesive project instead of juggling multiple contractors on their own.

If you’re on a well and thinking about repiping, adding a recirculation loop, or replacing an aging water heater, it’s worth having us walk the property, test your water, and design a system that fits your home — not just a generic blueprint.