Tank vs. Tankless Water Heater Replacement Cost in Mauldin, SC

When it comes to replacing a failing water heater, homeowners in Mauldin, SC often ask: Is a tank or tankless system the better investment? Recently, CB Smith Plumbing completed a water heater upgrade for a local family by guiding them through the pros, cons, and water heater replacement cost differences of both systems.

The homeowner initially reached out due to a leaking 10-year-old tank water heater. During the consultation, we walked them through available water heaters options, associated costs, and what to expect in terms of efficiency, longevity, and installation complexity. You can view all our services related to water heaters on our website.

• Upfront Cost: $1,200 – $2,000 (including installation)
• Lifespan: 8–12 years
• Energy Efficiency: Moderate
• Installation Time: Typically 2–4 hours

• Upfront Cost: $2,800 – $4,500 (including installation)
• Lifespan: 15–20 years
• Energy Efficiency: High – only heats water on demand
• Installation Time: 6–10 hours (can require upgrades to gas or electrical systems)

While the initial water heater replacement cost for a tankless model is higher, it offers long-term savings on utility bills and reduces the frequency of future replacements.

After reviewing the options, the homeowner chose a high-efficiency tankless water heater. Our team removed the old tank, upgraded the gas line, and installed the new unit—all in one day.

We ensured the water pressure, venting, and temperature regulation were optimized for the home’s layout and demand. By the end of the job, the family had endless hot water, more storage space, and a noticeable boost in system performance.

If you’re planning to invest in a new water heater, consider these additional upgrades that can enhance comfort, efficiency, and resale value:

1. Recirculation Pumps: Ensure hot water reaches your faucets faster, reducing water waste and wait times.
2. Smart Water Heater Controllers: Remotely monitor usage and adjust settings via your smartphone—great for energy savings.
3. Expansion Tanks: Protect your plumbing system from pressure spikes and prolong the life of your heater.
4. Whole-Home Water Filtration: Prevent sediment buildup in your heater and improve water quality throughout your home.

Whether you’re leaning toward a traditional tank system or ready to invest in a tankless model, understanding the full scope of water heater replacement cost is key. CB Smith Plumbing helps Mauldin, SC homeowners make informed choices backed by honest recommendations and professional installation.

Need help choosing the right system for your home? Contact CB Smith Plumbing today for a no-pressure consultation.