Water Heater Replacement in Lemont
Get fast, fair pricing from licensed local pros. Typical Lemont cost: $1.1k – $2.6k installed.
- Tank, gas
- $1.1k – $2.6k
- Tank, electric
- $950 – $2.3k
- Tankless, gas
- $2.8k – $5.6k+
- Heat pump hybrid
- $2.3k – $5.1k
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Water heater replacement cost by type.
Installed prices for Lemont, adjusted for local labor. Larger tanks and code upgrades move the number up.
In Lemont, Illinois, where the median home was built in 1994, many water heaters are reaching the end of their lifespan. Replacing a water heater in Lemont typically costs between $750 and $3,700, depending on the type and installation complexity. Gas tank models are common due to the area's reliance on natural gas, but heat pump units qualify for a federal 25C tax credit of up to $2,000. All installations must be performed by an Illinois-licensed plumber and comply with the Illinois Plumbing Code, which may require an expansion tank on closed systems. Permits are required, adding to the overall cost.
- Tank, 40–50 gal gasThe default for most US homes$1,100 – $2,600
- Tank, 40–50 gal electricNo venting required$950 – $2,300
- Tankless, gasEndless hot water, higher BTU gas line often needed$2,800 – $5,600+
- Hybrid heat pumpMost efficient, qualifies for federal credits$2,300 – $5,100
- Permit & disposalMost jurisdictions require it$45 – $325
* Cold-region homes may need extra insulation or larger tanks.
Water heaters in Lemont
U.S. Census ACS- Households
- 7,023
- Homeowners
- 5,467
- 85% own
- Median home value
- $445,000
- Median income
- $128,694
- Median home built
- 1994
- Housing units
- 6,409
With a median home built in 1994, many Lemont water heaters are at or past their 8–12 year lifespan — a common reason replacements spike here.
What’s different about Lemont.
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 Lemont
Given Illinois’s cold continental (humid) climate and gas water heating, high-efficiency gas is the sensible default for most Lemont homes. Winter inlet water runs cold here, so recovery rate matters — size up a tankless or favor a high-recovery tank. A pro can confirm the right size and fuel for your home.
Sources: Illinois Plumbing Authority - Water Heater Installation Regulations · Ill. Admin. Code tit. 77, 890.1220 - Hot Water Supply and Distribution · EIA Illinois State Energy Profile
What Lemont code requires
Replacing a water heater in Lemont follows Illinois rules under the Illinois Plumbing Code (state-specific, 77 Ill. Admin. Code Part 890). 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, near the water heater on the cold supply
Required where a pressure regulator or backflow preventer is present.
- Plumbing codeIllinois Plumbing Code (state-specific, 77 Ill. Admin. Code Part 890)
- Good to know—
Water heater installation/replacement must be performed by an Illinois-licensed plumber, and home-rule cities like Chicago can impose stricter local rules
Sources: Illinois Plumbing Authority - Water Heater Installation Regulations · Ill. Admin. Code tit. 77, 890.1220 - Hot Water Supply and Distribution · EIA Illinois State Energy Profile
Not sure which rules and rebates apply to your home?
A licensed Lemont 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 Lemont
Illinois water heating is mostly gas, which shapes the money back:
- 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 Illinois.
Ready to get your water heater fixed in Lemont?
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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
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- 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 Lemont, explained.
What Affects Water Heater Replacement Cost in Lemont
Prices vary based on the unit type: gas tank ($750–$1,850), electric tank ($850–$2,100), tankless ($1,400–$3,300+), or heat pump ($1,700–$3,700). Labor costs reflect the need for a licensed plumber, and permit fees add $50–$150. The cold continental climate means incoming water is cold, which can affect recovery time and unit sizing. Homes built in 1994 may have older plumbing that requires upgrades, such as an expansion tank or seismic strapping (not required but recommended).
Common Water Heater Issues in Lemont
Sediment Buildup
Hard water from Lake Michigan can cause sediment accumulation, reducing efficiency and lifespan.
Rust and Corrosion
Older tanks in homes built around 1994 may develop rust, leading to leaks.
Inadequate Capacity
Larger families may find a 40-gallon tank insufficient, requiring an upgrade to 50+ gallons or a tankless unit.
Water Heater Replacement FAQs — Lemont
Yes, a permit is required under the Illinois Plumbing Code. Your licensed plumber typically handles the permit application.
Water Heater Replacement near Lemont
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