Water Heater Replacement in Madison
Get fast, fair pricing from licensed local pros. Typical Madison 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 Madison, adjusted for local labor. Larger tanks and code upgrades move the number up.
Madison homeowners replacing a water heater face costs influenced by the age of homes (median built 1958) and local code requirements. Typical installed prices range from $750–$1,850 for a tank gas unit, $850–$2,100 for tank electric, $1,400–$3,300+ for tankless, and $1,700–$3,700 for heat pump models. Many homes have gas service, making gas water heaters a common choice. Cold winter inlet water and humid climate affect unit sizing and efficiency. New Jersey requires a permit and inspection under the Uniform Construction Code plumbing subcode (N.J.A.C. 5:23-3.15), and expansion tanks are needed on closed systems. These factors add to labor and materials costs.
- 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 Madison
U.S. Census ACS- Households
- 6,608
- Homeowners
- 3,514
- 61% own
- Median home value
- $844,700
- Median income
- $163,567
- Median home built
- 1958
- Housing units
- 5,754
With a median home built in 1958, many Madison water heaters are at or past their 8–12 year lifespan — a common reason replacements spike here.
What’s different about Madison.
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 Madison
Given New Jersey’s humid continental / humid subtropical climate and gas water heating, high-efficiency gas is the sensible default for most Madison 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: IAPMO: New Jersey Adopts 2021 National Standard Plumbing Code · NJ Board of Public Utilities - Customer Assistance Incentives · EnergySage - New Jersey Electricity Rates
What Madison code requires
Replacing a water heater in Madison follows New Jersey rules under the National Standard Plumbing Code (NSPC), 2021 edition. 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
Required where a pressure regulator or backflow preventer is present.
- Plumbing codeNational Standard Plumbing Code (NSPC), 2021 edition
- Good to know—
NJ uses the National Standard Plumbing Code (not IPC/UPC); replacements must be permitted and inspected under the Uniform Construction Code plumbing subcode (N.J.A.C. 5:23-3.15).
Sources: IAPMO: New Jersey Adopts 2021 National Standard Plumbing Code · NJ Board of Public Utilities - Customer Assistance Incentives · EnergySage - New Jersey Electricity Rates
Not sure which rules and rebates apply to your home?
A licensed Madison 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 Madison
New Jersey water heating is mostly gas, which shapes the money back:
- State$500 base rebate (ENERGY STAR HPWH, UEF 2.0+)NJ Clean Energy Program (NJCEP) Heat Pump Water Heater Rebate →
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.
Ready to get your water heater fixed in Madison?
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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
Repair or replace, fast
Your pro confirms the price on-site and gets your hot water back. Most jobs done in a few hours.
Water Heater Replacement in Madison, explained.
What Drives Water Heater Replacement Costs in Madison?
Price differences stem from unit type (gas vs. electric vs. tankless vs. heat pump), labor rates, and the need to comply with New Jersey's National Standard Plumbing Code. Older homes (median 68 years) may require venting or piping upgrades. Permits and inspections add $100–$300. Expansion tanks are required on closed systems. The federal 25C tax credit (30%, up to $2,000) can lower costs for qualifying heat pump units. Seasonal demand and access difficulty also affect pricing.
Common Water Heater Issues in Madison
Sediment buildup
Hard water and age (median home built 1958) cause sediment accumulation, reducing efficiency and causing rumbling noises.
Corrosion from cold inlet water
Cold winter water temperatures increase condensation and corrosion, shortening tank life, especially in older units.
Code compliance for replacements
Many older installations lack expansion tanks or proper permits; replacements must meet NSPC 2021 and require inspection.
Water Heater Replacement FAQs — Madison
Yes, New Jersey requires a permit under the Uniform Construction Code plumbing subcode (N.J.A.C. 5:23-3.15). The replacement must be inspected by the local building department.
Water Heater Replacement near Madison
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