What a plumber does when a water heater is replaced
The old tank is shut off, drained and carried out. The new one goes in with fresh connections to the cold supply and hot outlet and, on gas, the gas line and flue. The relief valve gets a discharge pipe to a safe place. Under the 2021 International Plumbing Code, which Michigan adopted in rule R 408.30701, that pipe may not connect directly to the drain. It ends in an air gap in the same room as the heater, with no threaded end or valves (ICC CodeNotes on section 504.6).
Ask the plumber where that pipe will end before the old tank leaves the house, because it is the part inspectors look at first.
Water heater replacement cost in Michigan: evidence and estimates
Our estimate for a tank water heater replacement in Michigan is $1,050 to $2,025 installed, with a typical $100 permit fee included. It is a model, not a quote: national published ranges adjusted for what Michigan plumbers are paid. Four Michigan companies publish installed prices, shown in their own row, and the permit rows show what four cities charge. DTE and Consumers Energy publish no dollar amounts for water heater discounts, so rebates are not in it.
| Item | Figure | What it is |
|---|---|---|
| Estimated range, not a quote | $1,050 to $2,025 installed, tank heater | Built from 2 national published ranges, adjusted by the Michigan plumber wage ratio (1.07) plus a typical permit fee ($100). Michigan company prices are shown separately. |
| 4 companies, early sample: published installed prices, collected Oct 19, 2026 | $400 to $4,000, depending on tank or tankless and gas or electric | Prices published by four Michigan companies; too few to call a typical price. Some start-at prices do not say whether the permit or haul-away is included. |
| Plumber wage, Michigan mean | $37.14 an hour | What Michigan plumbers are paid (BLS, May 2025), not what you are charged. |
| Permit, Grand Rapids | $52 application plus $21 water heater | Fee schedule effective July 1, 2026. |
| Permit, Sterling Heights | $55 application plus $40 water heater or tankless | 2026-2027 fee chart. |
| Permit, Flint | $95 base plus $15 water heater | FY27 schedule, which also sets a $160 minimum per inspection. |
| Permit, Dearborn | $100 administrative fee plus $80 minimum permit ($180), $15 per hot water tank | Minimum covers one rough and one final inspection. |
Estimated range. Built from national published ranges (2 sources), adjusted by Michigan's plumber wage ratio to the US (1.07, BLS May 2025), plus the local permit fee where the city publishes one. Not a quote. Where Michigan companies publish prices we show them separately. Water heater replacement: 4 companies, early sample. Full method. Prices as of Oct 19, 2026.
Repair or replace: what age tells you
DOE puts storage tank heaters at roughly 10 to 15 years and tankless at about 20 with maintenance. We saw those figures in a search summary because the DOE page would not load, so treat them as a rough guide. We have no Michigan source for a firm cut-off age. See how long a water heater lasts and compare water heater repair.
- The fault is a single part and the tank body is dry.
- The tank leaks from the body.
Who is allowed to swap a gas water heater in Michigan
Pages that say any plumber can swap a gas heater skip a step. LARA's Bureau of Construction Codes mechanical FAQ says replacing a gas water heater takes a Michigan mechanical license (the HVAC Equipment or the Gas Piping and Venting class) and a Michigan plumbing contractor's license, with a mechanical permit and a plumbing permit. We read that FAQ through a search summary rather than the full document, and it is undated, so confirm with LARA before you rely on it. Ask the company how it covers both licenses.
A homeowner may pull permits for the home they live in under the Skilled Trades Regulation Act (2016 PA 407), and the work has to be inspected. That is a legal route, though we are not recommending it. Our guide on replacing your own water heater covers what the exemption includes.
Tank, tankless or heat pump: what the federal rules changed
Federal efficiency standards for water heaters took effect on April 16, 2015. For electric storage tanks over 55 gallons, DOE said the standard would effectively require heat pump technology. If you are replacing a large electric tank, expect to be quoted a heat pump model.
ENERGY STAR's 2025 factsheet puts a heat pump water heater's saving over a standard electric tank at $300 a year for a household of two (payback 5.0 years) and $600 for four (2.5 years). These are national modelling figures and say nothing about Michigan bills. For tank versus tankless, read tankless versus tank in Michigan; if you are unsure whether the old heater needs replacing, try the repair or replace tool.
A failed water heater: when it cannot wait
- Water pooling under the tank that you cannot stop by closing the cold supply to the heater.
- Any smell of gas near the heater. Leave, call 911 from outside, then DTE's gas leak line at (800) 947-5000 or Consumers Energy at 800-477-5050.
- Water near the electrical panel or a ceiling that is sagging.
- No hot water but no leak. A same-week appointment will do.
Checks before you commit to a new heater
- Look for a rust trail or a puddle that comes from a fitting, not the tank body. A loose fitting is a repair; a seam leak is a replacement.
- Check the thermostat. CPSC advises 120 degrees F.
- Write down make, size and fuel from the label so every quote prices the same heater.
- On a gas unit with only a pilot problem, read why a pilot will not stay lit first.
The permit and the license for a replacement heater
LARA says plumbing work may not start until a permit is issued, and it exempts only repair of the working parts of a faucet or valve and clearing stoppages. A replacement tank is neither. Sterling Heights says you need a plumbing permit for a water heater, and Delta Township lists a water heater change out among the projects that always require one.
The applicant has to be a licensed plumbing contractor or a homeowner doing their own work at home. Look the company up on LARA's lookup before you sign; unlicensed work is a misdemeanour under MCL 339.5601. Permits come from the city: in Grand Rapids the development center, in Sterling Heights the building department. Details are in our water heater permit guide.
Ask for the license number and check it on the LARA lookup before any work starts.
- Grand Rapids plumbing permit fee schedule Read Oct 19, 2026.
- Sterling Heights plumbing permit fee schedule Read Oct 19, 2026.
- Flint plumbing permit fee schedule Read Oct 19, 2026.
- Dearborn plumbing permit fee schedule Read Oct 19, 2026.
- LARA BCC Plumbing Permit Information Read Oct 19, 2026.
- City of Sterling Heights FAQ (Delta Township FAQ also fetched: https://www.deltami.gov/departments/building/frequently_asked_questions_by_homeowners_and_contractors.php) Read Oct 19, 2026.
- LARA BCC Mechanical FAQs Read Oct 19, 2026.
- MCL 339.6107 Read Oct 19, 2026.
- MCL 339.5601 Read Oct 19, 2026.
- ICC CodeNotes: Water heater safety in the I-Codes Read Oct 19, 2026.
- Mich. Admin. Code R 408.30701 (Cornell LII) Read Oct 19, 2026.
- DOE Office of Hearings and Appeals, EXC-14-0003 Read Oct 19, 2026.
- energy.gov: Which Water Heater Is Right for You? Read Oct 19, 2026. Read through a search summary, not on the source page itself. Confirm it with the source before you rely on it.
- CPSC Tap Water Scalds (Pub 5098) Read Oct 19, 2026.
- energy.gov Renters Read Oct 19, 2026.
- DTE Home Safety (gas) Read Oct 19, 2026. Read through a search summary, not on the source page itself. Confirm it with the source before you rely on it.
- LARA BCC Mechanical Permit Information Read Oct 19, 2026.
A tool for this job
Water heater: repair or replace
Four questions: whether you smell gas, how old the heater is, what fuel it uses and what it is doing. You get a direction and the permit note for Michigan. It does not invent an age cut-off; the only range it uses is the Department of Energy's.
Open the toolQuestions people ask
Do I need a permit to replace a water heater in Michigan?
Yes, in practice, because the state exempts only faucet and valve repairs and clearing stoppages. LARA's text does not name water heaters, so this rests on that list, and Sterling Heights says a permit is required. Confirm with your building department.
Am I allowed to replace my own water heater in Michigan?
A homeowner may pull permits for the home they live in, and the work has to pass inspection. We do not encourage doing gas work yourself. See our guide.
How much is a permit for a hot water heater?
It depends on the city: from $15 to $40 for the heater, plus an application or base fee. Grand Rapids charges $21 plus $52, Sterling Heights $40 plus $55, Flint $15 plus $95, Dearborn $15 per tank on a $180 minimum. Fees change each fiscal year.
What is the normal cost of replacing a water heater in Michigan?
Our estimate is $1,050 to $2,025 installed, permit included, and it is a model, not a quote. It is built from national published ranges, adjusted for Michigan plumber wages, plus a typical permit fee, and the cost table shows the prices Michigan companies publish beside it. Get two written quotes for the same size and fuel.
Do you call a plumber or an electrician for a water heater?
For a gas heater, LARA's mechanical FAQ says both a mechanical license and a plumbing contractor license apply, with two permits. For an electric heater, ask your building department who it wants on the permit.
Are there rebates for a new water heater in Michigan?
DTE and Consumers Energy run discounts through participating contractors but publish no dollar amounts. MiHER heat pump rebates are paused for new income-qualified applications in five districts, including Detroit and Grand Rapids. The federal 25C credit ended for installs after December 31, 2025, per the IRS.
- U.S. Bureau of Labor Statistics, OEWS May 2025: plumbers, pipefitters and steamfitters (SOC 47-2152), Michigan and metro-area wages Read Oct 19, 2026.
- PlumberMatch: how we estimate costs (editorial policy) Read Oct 19, 2026.
- ENERGY STAR Certified Heat Pump Water Heater factsheet (2025) Read Oct 19, 2026.
- DTE Energy: Natural Gas Emergency Read Oct 19, 2026.
- Consumers Energy natural gas safety bill insert (Oct 2020) Read Oct 19, 2026.
- DTE Water Heaters Read Oct 19, 2026.
- Consumers Energy Water Heater Savings; 2026 chart res-programs.pdf Read Oct 19, 2026.
- EGLE Home Energy Rebates Read Oct 19, 2026. Confirm with the source before you rely on it.
- IRS Energy Efficient Home Improvement Credit Read Oct 19, 2026. Our reading of the source, not something it states outright. Confirm before you rely on it.
- Thornton & Grooms: published price page Read Oct 19, 2026.
- Mr. Rooter Plumbing: published price page Read Oct 19, 2026.
- Mazure's: published price page Read Oct 19, 2026.
- Water Heater Replacement Company of Grand Rapids: published price page Read Oct 19, 2026.