Key takeaways
- Typical cost in Irmo: $770–$1,600 (per installed unit); national range $882–$1,826.
- Biggest local factors: long, hot cooling season.
- How long it takes: A tank-for-tank swap is usually done in a day; converting to tankless takes about twice as long.
- Permits: Most areas require a permit for water heater replacement, typically $25–$300.
- Best timing: Replace an aging tank before it fails; heat pump units perform well in warm weather.
- Before you hire: get at least three written, itemized quotes from licensed, insured South Carolina contractors.
How much does water heater replacement cost in Irmo, SC?
Water heater replacement typically costs $882–$1,826, with an average around $1,348. Tankless and solar units cost more, and converting from tank to tankless adds labor. South Carolina prices run 13% below the U.S. average, so a typical Irmo job lands around $770–$1,600. Local labor rates, permit fees and your home's specifics move the final number.
| Item | Typical cost | Notes |
|---|---|---|
| Tank water heater (gas or electric) | $600–$2,500 | Installed |
| Tankless water heater | $1,400–$3,900 | Installed |
| Hybrid heat pump water heater | $1,200–$3,500 | Installed |
| Solar water heater | $1,700–$5,500 | Installed |
| Labor, tank-for-tank swap | $150–$450 | Tankless swap $600–$1,900 |
| Tank-to-tankless conversion labor | $150–$2,500 | About twice as long as a swap |
| Permit | $25–$300 | Plus $50–$300 for natural gas work |
In a smaller community like Irmo, some specialists travel in from nearby cities and may add a trip charge. Ask whether travel is included, and consider bundling projects.
How we calculate costs
National ranges come from published cost surveys (cited below). Local estimates apply an approximate state cost index. Read our methodology.
Water Heater Replacement cost questions for Irmo, SC
- What is the cost of tank water heater (gas or electric) in Irmo, SC? The typical cost of tank water heater (gas or electric) in Irmo, SC is $520–$2,200, adjusted for South Carolina prices (national $600–$2,500). Installed.
- What is the cost of tankless water heater in Irmo, SC? The typical cost of tankless water heater in Irmo, SC is $1,200–$3,400, adjusted for South Carolina prices (national $1,400–$3,900). Installed.
- What is the cost of hybrid heat pump water heater in Irmo, SC? The typical cost of hybrid heat pump water heater in Irmo, SC is $1,000–$3,000, adjusted for South Carolina prices (national $1,200–$3,500). Installed.
- What is the cost of solar water heater in Irmo, SC? The typical cost of solar water heater in Irmo, SC is $1,500–$4,800, adjusted for South Carolina prices (national $1,700–$5,500). Installed.
- What is the cost of labor, tank-for-tank swap in Irmo, SC? The typical cost of labor, tank-for-tank swap in Irmo, SC is $130–$390, adjusted for South Carolina prices (national $150–$450). Tankless swap $600–$1,900.
- What is the cost of tank-to-tankless conversion labor in Irmo, SC? The typical cost of tank-to-tankless conversion labor in Irmo, SC is $130–$2,200, adjusted for South Carolina prices (national $150–$2,500). About twice as long as a swap.
- What is the cost of permit in Irmo, SC? The typical cost of permit in Irmo, SC is $20–$260, adjusted for South Carolina prices (national $25–$300). Plus $50–$300 for natural gas work.
- What is the cost of old unit haul-away in Irmo, SC? The typical cost of old unit haul-away in Irmo, SC is $90–$440, adjusted for South Carolina prices (national $100–$500).
- What is the cost of expansion tank in Irmo, SC? The typical cost of expansion tank in Irmo, SC is $80–$300, adjusted for South Carolina prices (national $90–$350).
- What is the cost of new gas line in Irmo, SC? The typical cost of new gas line in Irmo, SC is $230–$710, adjusted for South Carolina prices (national $260–$820). Electric tankless may need a new circuit or subpanel ($500–$1,000).
What affects water heater replacement in Irmo
Irmo has hot, humid summers and mild winters. Replace an aging tank before it fails; heat pump units perform well in warm weather.
Signs you need a new water heater
- Rusty or discolored hot water
- Leaks or water pooling around the base
- Popping or banging noises
- Hot water runs out faster than it used to
- Lukewarm or no hot water
- The tank is 10 or more years old
Common questions about water heater replacement in Irmo
How much does it cost to replace a water heater in Irmo, SC?
Most water heater replacements cost about $770–$1,600 in Irmo, SC. Tank units run $600–$2,500 installed and tankless units $1,400–$3,900.
Is a tankless water heater worth the cost?
It can be if you'll stay long enough: tankless units cost more up front but typically last 20+ years versus 8–12 for a tank.
How much does a tank-to-tankless conversion cost?
Conversion labor alone runs $150–$2,500 because it takes about twice as long as a standard swap, and gas lines or electrical upgrades may add more.
Should I repair or replace a leaking water heater?
A leak from the tank itself usually means replacement. Leaks from valves or fittings can often be repaired for $230–$1,000.
Timeline, permits and DIY in Irmo
How long it takes
A tank-for-tank swap is usually done in a day; converting to tankless takes about twice as long.
Permits
Most areas require a permit for water heater replacement, typically $25–$300. Check with the Irmo building department for local rules.
DIY or hire a pro?
Hire a licensed plumber: gas lines, venting and carbon monoxide risks make DIY replacement dangerous.
Questions to ask Irmo contractors
Ask every bidder the same questions so you can compare quotes apples to apples.
- Does the quote include permit, haul-away and an expansion tank?
- Is my gas line or electrical circuit sized for the new unit?
- What is the tank and parts warranty?
- Would a heat pump or tankless unit pay off for my household?
Maintenance that prevents costly repairs
- Flush the tank once a year
- Test the pressure-relief valve yearly
- Check the anode rod every few years
How to hire for water heater replacement in Irmo
- Use a licensed plumber and confirm they pull the permit.
- Ask for a quote that includes haul-away, expansion tank and code upgrades.
- Compare tank, tankless and heat pump options for your fuel and usage.
- Get the parts and labor warranties in writing.
Water Heater Replacement in Irmo: FAQs
How much does water heater replacement cost in Irmo, SC?
Most replacements cost $882–$1,826 nationally before local labor and permit differences. Tankless units typically cost $1,400–$3,900 installed.
Do I need a permit to replace a water heater in Irmo?
Usually yes. Your plumber typically pulls the permit; costs commonly run $25–$300.
How much does water heater replacement cost in Irmo compared to the national average?
With South Carolina's regional cost index of 0.87, expect roughly $770–$1,600 in Irmo, versus $882–$1,826 nationally.
How long does water heater replacement take in Irmo?
A tank-for-tank swap is usually done in a day; converting to tankless takes about twice as long. Permit and inspection scheduling in Irmo can add a few days.
Do I need a permit for water heater replacement in Irmo?
Most areas require a permit for water heater replacement, typically $25–$300. Confirm with the Irmo or county building department.
Which Irmo ZIP codes does this guide cover?
This guide applies to Irmo ZIP codes 29063, plus the surrounding area.
Water Heater Replacement near Irmo
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Other home services in Irmo
Sources: Angi — Water heater replacement cost · Bob Vila — Water heater replacement cost · ENERGY STAR — Heat pump water heater savings. Ranges are rounded estimates; see our editorial policy.
Local risk factors reflect general South Carolina climate patterns; check FEMA's National Risk Index for county-level ratings. Local estimates apply an approximate regional cost index to national ranges.