Storage tank
$1,600–$2,400Typical cost, including installation
WATER HEATER REPLACEMENT IN GRAYSLAKE
Grayslake Water Heater
Replacement
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See what replacement costs ↓GRAYSLAKE AT A GLANCE
Replacing a water heater in Grayslake.
Yes, Grayslake requires a permit to replace a water heater. Your plumber applies with their Illinois plumbing credentials (055 contractor registration, plus a 058 or Chicago license) and the heater's specs. If the vent changes, venting details go in too. Electricity is from ComEd and gas is from Nicor Gas. Water is Lake Michigan water treated by the Central Lake County Joint Action Water Agency.
- Permit to replace with the same type
- Yes · Village of Grayslake Building Department
- Who gets the permit
- A licensed plumber. You need copies of the plumber's Illinois contractor registration (055) and license (IDPH 058 or Chicago). The plumber must also sign off, through a signed application, a contract or proposal, or a letter of intent.
- Electric utility
- ComEd
- Gas utility
- Nicor Gas
- Water
- Village of Grayslake (Lake Michigan water treated by the Central Lake County Joint Action Water Agency, CLCJAWA)
- Rebate worth checking
- Nicor Gas water heater rebates (Active)
- Typical home
- Built 1994 (median) · 78% owner-occupied
- Companies found
- 2 that advertise water heater work
01 / TYPICAL PRICES
What a new water heater costs.
Know before you call.
Heat-pump tank
$2,500–$5,000Typical cost, including installation
Tankless
$2,400–$5,400Typical cost, including installation
AI equipment illustrations; models vary and images are not to scale. Typical national prices from Home Depot ↗, checked September 28, 2026. The source doesn’t say how many jobs the ranges are based on. These are not Grayslake averages or guaranteed quotes.
Compare what each quote includes.Equipment · Labor · Permits · Old heater removalHow to compare quotes →
What we know about prices in Grayslake
- National installer’s published rangeThe ranges above. Home Depot ↗
- Local company’s advertised price1 of the companies listed for Grayslake post water heater prices or specials on their websites: Mr. Rooter Plumbing of McHenry County. Each offer has its own conditions.
- Measured local dataNot collected yet, so no Grayslake average is shown.
What can change the price in Grayslake?
If the venting changes, include venting specs and location with the application. New or changed electrical hookups, such as for air conditioners, need an electrical permit and a licensed electrician.
02 / COMPANIES WE FOUND
Who replaces water heaters in Grayslake?
Companies that advertise water heater replacement here, with what their water heater customers say.
Companies we found in our research. They are not Ember & Tank providers or partners. We show selected reviews, not a rating or every review. How we choose reviews →
Abt Electronics & Appliances – Plumbing Services
Lists Grayslake among the areas it serves. Based in 1200 N. Milwaukee, Glenview, IL 60025.
- Tank
- Tankless
What the reviews say
Water heater feedback Reviewers praised Abt staff for following up until a multi-system project that included a tankless water heater was finished, and for handling an emergency water heater replacement.
Worth knowing No water heater complaints found in the sources checked.
2 water heater reviews read, checked September 30, 2026.
Mr. Rooter Plumbing of McHenry County
Lists Grayslake among the areas it serves.
- Tank
- Tankless
- Heat pump
- Repair
- Emergency service
Published price: "$200 Off Water Heater Installation" coupon (listed as expiring 01/31/2027)
What the reviews say
Water heater feedback Reviewers praised quick installs (including a Friday-night job), a leak repair that saved the unit, clear quotes, and explanations of warranty and maintenance.
Worth knowing Two positive reviewers said follow-up work was needed (one said the new heater was a lemon and was swapped the same evening; another said a water temperature problem needed a second visit); no water heater complaints found in the sources checked.
5 water heater reviews read, checked September 30, 2026.
Order: companies based in Grayslake first, then companies whose water heater reviews we’ve read. Each group is alphabetical. These businesses are not our employees or vetted partners and do not receive requests from Ember & Tank. We haven’t checked their license, insurance or quality of work. IDPH plumber license verification ↗.
See before-and-after replacement examples from independent companies →
HOMES IN GRAYSLAKE
What Grayslake homes are like.
1994Median year built
24%Built before 1980
78%Owner-occupied
86%Heat with utility gas
78%Single-family homes
The median home was built in 1994. A first or second replacement is common in homes this age.
86% of homes heat with utility gas, so gas water heaters with existing venting are common here.
U.S. Census Bureau, American Community Survey ACS 2024 5-year ↗ (2020-2024). Heating fuel is what homes use to heat the house. It often, but not always, matches the water heater’s fuel.
LOCAL CONDITIONS
What’s different in Grayslake.
Three paper sets for homes
Home permit applications need three sets of documents. You can email them only if every sheet is 11x17 or smaller.
Grayslake General Submittal Requirements – Miscellaneous Projects (PDF) ↗
Chicago plumber licenses work here
The village's water heater checklist takes either an IDPH 058 plumber's license or a Chicago plumber's license. Either one goes with the state 055 contractor registration.
Grayslake General Submittal Requirements – Miscellaneous Projects (PDF) ↗
ENERGY & WATER
Who supplies Grayslake homes.
Energy
- Electric: ComEd
- Gas: Nicor Gas
Nicor Gas tariff: municipalities to which the schedule applies ↗ · ComEd: Company Information (electric service across northern Illinois) ↗
Water
Village of Grayslake (Lake Michigan water treated by the Central Lake County Joint Action Water Agency, CLCJAWA)
REBATES & CREDITS
Rebates for Grayslake homes.
For ComEd and Nicor Gas customers in Grayslake. Ask installers for the price before rebates, then check with the program that you qualify.
- Nicor Gas water heater rebates ↗Active$150 for an ENERGY STAR gas tankless water heater (UEF 0.95 or higher, 75 MBTUH or less), or $150 for an ENERGY STAR power-vented or condensing storage water heater (UEF 0.86 or higher).
- Illinois IRA Home Energy Rebates (HEAR and HOMES) ↗Not launchedIllinois EPA says its HEAR application has not yet been processed by U.S.
- Federal Energy Efficient Home Improvement Credit (25C) ↗EndedCovered improvements made through December 31, 2025.
Checked September 30, 2026. Who qualifies and the conditions: Illinois rebates · How to check an incentive.
PERMITS & LICENSING
Permits and licenses in Grayslake.
Permits and who issues them
Water heater replacement is on Grayslake's list of jobs that need a permit. Turn in a Plumbing Permit Application with the plumber's credentials and the heater's specs. If the venting changes, add the venting specs and where it runs. Bring it to Village Hall, or email permits@villageofgrayslake.com if the sheets are 11x17 or smaller. Homes need three sets of documents.
Village of Grayslake Building Department ↗ · Grayslake – Permitting Resources ↗ · Grayslake General Submittal Requirements – Miscellaneous Projects (PDF) ↗
Check the installer’s license
Ask for the license number and search it yourself on the IDPH plumber license verification ↗. A listing on Ember & Tank is not a license check. Illinois licensing explained →
NEARBY CITIES
Compare places near Grayslake.
| City | Distance | Permit to replace | Fee | Electric |
|---|---|---|---|---|
| Gages Lake | 3 mi | Not required (conditions apply) (county) | $35 | ComEd |
| Round Lake | 4 mi | Check with city | — | ComEd |
| Round Lake Beach | 4 mi | Check with city | — | ComEd |
| Mundelein | 5 mi | Required | $75 | ComEd |
| Libertyville | 5 mi | Check with city | $65 | ComEd |
| Lindenhurst | 5 mi | Required | — | ComEd |
COMMON QUESTIONS
Grayslake water heater questions.
What goes in a water heater permit application in Grayslake?
The Plumbing Permit Application, a copy of the plumber's Illinois 055 contractor registration, their 058 (or Chicago) license, the plumber's signed sign-off, and the heater's specs. Add venting specs if the venting changes.
Grayslake General Submittal Requirements – Miscellaneous Projects (PDF) ↗
Can I send the application by email?
Yes, send it to permits@villageofgrayslake.com if every sheet is 11x17 or smaller. If not, bring three sets to Village Hall.
Grayslake General Submittal Requirements – Miscellaneous Projects (PDF) ↗
More guides: Illinois water heater replacement · All local guides