Water Heater Replacement in Cayce
Get fast, fair pricing from licensed local pros. Typical Cayce cost: $950 – $2.2k installed.
- Tank, gas
- $950 – $2.2k
- Tank, electric
- $800 – $2k
- Tankless, gas
- $2.4k – $4.8k+
- Heat pump hybrid
- $2k – $4.4k
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Water heater replacement cost by type.
Installed prices for Cayce, adjusted for local labor. Larger tanks and code upgrades move the number up.
In Cayce, South Carolina, replacing a water heater is a common home maintenance task given the median home age of 57 years. Local installed costs range from $650–$1,600 for a tank gas unit, $700–$1,750 for tank electric, $1,200–$2,800+ for tankless, and $1,450–$3,200 for a heat pump model. Permits are required in Cayce under the South Carolina Plumbing Code 2021, and an expansion tank is needed if your system has a backflow preventer or check valve. With humid subtropical winters, inlet water is moderate, making heat pump water heaters a strong fit for energy savings—especially with the federal 25C tax credit covering 30% of cost up to $2,000. Most homes use electric water heating, so upgrading to a heat pump unit can lower operating costs over time.
- Tank, 40–50 gal gasThe default for most US homes$950 – $2,200
- Tank, 40–50 gal electricNo venting required$800 – $2,000
- Tankless, gasEndless hot water, higher BTU gas line often needed$2,400 – $4,800+
- Hybrid heat pumpMost efficient, qualifies for federal credits$2,000 – $4,400
- Permit & disposalMost jurisdictions require it$40 – $275
* Cold-region homes may need extra insulation or larger tanks.
Water heaters in Cayce
U.S. Census ACS- Households
- 5,502
- Homeowners
- 3,813
- 54% own
- Median home value
- $147,700
- Median income
- $56,976
- Median home built
- 1969
- Housing units
- 7,056
With a median home built in 1969, many Cayce water heaters are at or past their 8–12 year lifespan — a common reason replacements spike here.
What’s different about Cayce.
Generic cost pages skip the things that actually decide your price and your unit’s lifespan here — local code, water, and the money you can claim back.
Recommended unit for Cayce
Given South Carolina’s humid subtropical climate and electric water heating, heat-pump (hybrid) is the sensible default for most Cayce homes. A pro can confirm the right size and fuel for your home.
Sources: South Carolina Plumbing Code 2021 (IPC 2021), Chapter 5 Water Heaters — UpCodes · South Carolina Home Energy Rebates — SC Energy Office · South Carolina Electricity Rates 2026 — EnergySage
What Cayce code requires
Replacing a water heater in Cayce follows South Carolina rules under the International Plumbing Code (IPC) — adopted as the South Carolina Plumbing Code 2021. Here’s what applies statewide:
- PermitRequired
Pulled by your licensed plumber; covers gas/venting and the expansion tank.
- Seismic strappingNot required
No state strapping mandate — one less line on the bill.
- Expansion tankRequired on closed systems (where a backflow preventer or check valve is present)
Required where a pressure regulator or backflow preventer is present.
- Plumbing codeInternational Plumbing Code (IPC) — adopted as the South Carolina Plumbing Code 2021
- Good to know—
Tankless water heaters intended for domestic use are limited to a maximum output of 140°F; many local jurisdictions (e.g., Columbia, Charleston) strictly require a permit even for a simple like-for-like replacement.
Sources: South Carolina Plumbing Code 2021 (IPC 2021), Chapter 5 Water Heaters — UpCodes · South Carolina Home Energy Rebates — SC Energy Office · South Carolina Electricity Rates 2026 — EnergySage
Not sure which rules and rebates apply to your home?
A licensed Cayce pro will walk you through code, the right unit, and what you can claim back — in one quick call.
No obligation — talk through your options.
Money back in Cayce
South Carolina water heating is mostly electric, which shapes the money back:
- StateUp to $1,750 for a heat pump water heater (income-qualified, within an overall household cap of up to $14,000)South Carolina Home Electrification and Appliance Rebates (HEAR) — heat pump water heaters →
State-level program — verify eligibility before you buy.
- State$2,000–$16,000 depending on energy savings achieved and household incomeSouth Carolina Home Efficiency Rebates (HOMES) →
State-level program — verify eligibility before you buy.
- Federal30% of cost, up to $2,000Federal 25C tax credit →
For a qualifying ENERGY STAR heat pump water heater. Claimed on your federal return.
The federal 25C tax credit (30%, up to $2,000 for a qualifying heat pump water heater) applies in every state, including South Carolina.
Ready to get your water heater fixed in Cayce?
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- Licensed & insured
- Same-day availability
- Upfront, no-pressure pricing
- Local pros near you
No obligation — talk through your options.
Hot water back in three steps.
- 1
Tell us what’s wrong
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- 2
Get matched with a local pro
We connect you with a licensed, insured water heater specialist near you — often the same day.
- 3
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Your pro confirms the price on-site and gets your hot water back. Most jobs done in a few hours.
Water Heater Replacement in Cayce, explained.
What influences water heater replacement cost in Cayce?
Prices vary primarily by unit type: tank electric is more affordable than tankless or heat pump models. Labor rates reflect local market conditions, and permit fees add a modest amount. If your home has a closed system (check valve or backflow preventer), an expansion tank is required, adding $50–$100. Older homes may need minor plumbing or venting updates. Tankless units require gas line upgrades or electrical work, raising costs. Heat pump models qualify for the federal tax credit, offsetting the higher upfront price.
Common water heater issues in Cayce
Sediment buildup
Cayce's water supply can contain minerals that settle in the tank, reducing efficiency and causing rumbling noises.
Corrosion from age
With many homes built in 1969, older tanks may rust and leak, especially if not flushed regularly.
Permit compliance
Local codes require a permit for replacement; failing to pull one can cause issues during home sale or inspection.
Water Heater Replacement FAQs — Cayce
Yes, a permit is required under the South Carolina Plumbing Code 2021, even for a like-for-like replacement. Your installer should handle this.
Water Heater Replacement near Cayce
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