Storage tank
$1,600–$2,400Typical cost, including installation
WATER HEATER REPLACEMENT IN MARLBOROUGH
Marlborough Water Heater
Replacement
Take a photo of your old water heater to start a replacement quote.
Get a water heater quotePhotos optional. No payment or booking.
See what replacement costs ↓MARLBOROUGH AT A GLANCE
Replacing a water heater in Marlborough.
In Marlborough, a licensed plumber or gas fitter gets permits from the Office of Inspectional Services. A home gas appliance replacement is $40, and plumbing replacements are $40 plus $8 for each fixture. National Grid supplies electricity and Eversource supplies gas. The city gets MWRA water, treated at the Carroll plant, which is in Marlborough.
- Permit to replace with the same type
- Yes · City of Marlborough Office of Inspectional Services (City Hall, 140 Main Street)
- Permit fee
- Home gas appliance replacement or addition: $40 ($15 for each extra appliance). Home plumbing changes (new or replacement): $40 plus $8 for each fixture. Re-inspection: $50. Work started without a permit costs double (fee schedule page; fee changes took effect July 1, 2021).
- Who gets the permit
- A Massachusetts-licensed plumber or gas fitter (248 CMR 3.05). The city's FAQ lets owners living in a one- or two-family home pull their own building permits, but state rules don't extend that to plumbing or gas.
- Electric utility
- National Grid (Massachusetts Electric)
- Gas utility
- Eversource (NSTAR Gas)
- Water
- City of Marlborough DPW (MWRA water) · soft: MWRA water is about 15-20 mg/L (ppm) hardness, roughly 1 gpg (Cambridge Water Dept. description of MWRA water); MWRA adds sodium carbonate and CO2 for corrosion control (2025 report)
- Typical home
- Built 1974 (median) · 56% owner-occupied
- Companies found
- 4 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 Marlborough averages or guaranteed quotes.
Compare what each quote includes.Equipment · Labor · Permits · Old heater removalHow to compare quotes →
What we know about prices in Marlborough
- National installer’s published rangeThe ranges above. Home Depot ↗
- Local permit feeHome gas appliance replacement or addition: $40 ($15 for each extra appliance). Home plumbing changes (new or replacement): $40 plus $8 for each fixture. Re-inspection: $50. Work started without a permit costs double (fee schedule page; fee changes took effect July 1, 2021).. City of Marlborough Office of Inspectional Services (City Hall, 140 Main Street) fee source ↗
- Local company’s advertised price1 of the companies listed for Marlborough post water heater prices or specials on their websites: Landry Mechanical. Each offer has its own conditions.
- Measured local dataNot collected yet, so no Marlborough average is shown.
02 / COMPANIES WE FOUND
Who replaces water heaters in Marlborough?
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 →
Roto-Rooter Plumbing & Water Cleanup (Marlborough)
Lists Marlborough among the areas it serves. Based in Marlborough.
- Tank
- Tankless
- Heat pump
- Repair
- Emergency service
What the reviews say
We haven’t found reviews that mention this company’s water heater work yet.
ARS / Rescue Rooter (Boston)
Lists Marlborough among the areas it serves. Based in Stoughton.
- Tank
- Tankless
- Repair
- Emergency service
What the reviews say
Water heater feedback No water heater praise specific to the Boston branch was found in the sources checked.
Worth knowing A BBB reviewer (Wally S., July 2026) said a hybrid hot water system installed by the Stoughton, Mass.
1 water heater review read, checked September 30, 2026.
Landry Mechanical
Lists Marlborough among the areas it serves. Based in Millbury (Framingham location at 763 Waverly St unit 32).
- Tank
- Tankless
- Repair
- Emergency service
Published price: Coupon: $75 off tank-type water heater installs or $125 off tankless water heater installs (present at time of sale; not combinable).
What the reviews say
Water heater feedback Reviewers praised fast response (including weekend and next-day replacements), manufacturer-warranty coordination on tankless and hybrid units, and technicians who explained options.
Worth knowing A BBB reviewer (DR.
6 water heater reviews read, checked September 30, 2026.
Sila Heating, Cooling, Plumbing & Electrical (Greater Boston)
Lists Marlborough among the areas it serves. Based in Stoneham.
- Tank
- Tankless
- Repair
- Emergency service
What the reviews say
Water heater feedback Yelp reviewers praised a free control adjustment and flat-rate flush (2026), a clear diagnosis of a leaking Bosch tankless unit (2026), and professional water heater and boiler replacements.
Worth knowing Yelp reviewers alleged replacement quotes ($5,400 in 2019; at least $12,000 in 2024) for problems others fixed for $350 and $750, and one (Jan 2026) said National Grid found a significant gas leak at a newly installed water heater's joint the day after installation; no company responses were visible on these.
5 water heater reviews read, checked September 30, 2026.
Order: companies based in Marlborough 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. Massachusetts eLIPSE license lookup ↗.
See before-and-after replacement examples from independent companies →
HOMES IN MARLBOROUGH
What Marlborough homes are like.
1974Median year built
57%Built before 1980
56%Owner-occupied
61%Heat with utility gas
51%Single-family homes
About 57% of homes were built before 1980. Older homes often have older venting, smaller closets and shutoff valves that should be checked before install day.
61% 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.
ENERGY & WATER
Who supplies Marlborough homes.
Energy
- Electric: National Grid (Massachusetts Electric)
- Gas: Eversource (NSTAR Gas)
Water
City of Marlborough DPW (MWRA water): soft: MWRA water is about 15-20 mg/L (ppm) hardness, roughly 1 gpg (Cambridge Water Dept. description of MWRA water); MWRA adds sodium carbonate and CO2 for corrosion control (2025 report)
Cambridge Water Dept: water hardness (MWRA water about 15-20 ppm) ↗ · MWRA 2025 water quality report, Marlborough edition ↗
REBATES & CREDITS
Rebates for Marlborough homes.
For National Grid (Massachusetts Electric) and Eversource (NSTAR Gas) customers in Marlborough. Ask installers for the price before rebates, then check with the program that you qualify.
- Federal Energy Efficient Home Improvement Credit (25C) ↗EndedCovered improvements made through December 31, 2025.
Checked September 30, 2026. Who qualifies and the conditions: Massachusetts rebates · How to check an incentive.
PERMITS & LICENSING
Permits and licenses in Marlborough.
Permits and who issues them
Marlborough's Office of Inspectional Services issues plumbing and gas permits. Its fee schedule has home lines for replacing a gas appliance and for plumbing changes or replacements. Re-inspections must be paid before they're scheduled.
The city doesn't license contractors. The state licenses builders, electricians, plumbers and gas fitters (city FAQ).
City of Marlborough Office of Inspectional Services (City Hall, 140 Main Street) ↗ · Marlborough: Fee Schedule ↗ · Marlborough: Inspectional Services ↗ · Marlborough Inspectional Services FAQs ↗
Check the installer’s license
Ask for the license number and search it yourself on the Massachusetts eLIPSE license lookup ↗. A listing on Ember & Tank is not a license check. Massachusetts licensing explained →
NEARBY CITIES
Compare places near Marlborough.
| City | Distance | Permit to replace | Fee | Electric |
|---|---|---|---|---|
| Hudson | 3 mi | Required | $50 | Hudson Light & Power Department (municipal) |
| Framingham | 6 mi | Required | $50 | Eversource |
| Maynard | 7 mi | Required | — | Eversource |
| Wellesley | 14 mi | Required | $50 | Wellesley Municipal Light Plant (WMLP) |
| Waltham | 16 mi | Required | $25 | Eversource (NSTAR Electric) |
| Needham | 16 mi | Required | $100 | Eversource |
COMMON QUESTIONS
Marlborough water heater questions.
How much is a gas water heater permit in Marlborough?
$40 for a home gas appliance replacement, plus a plumbing permit at $40 plus $8 for each fixture. Re-inspections are $50.
Can a homeowner pull a plumbing or gas permit in Marlborough?
Not for plumbing or gas. Massachusetts gives those permits only to licensed plumbers and gas fitters. The owner option in the city FAQ is for building permits, and the city says it doesn't license contractors (the state does).
More guides: Massachusetts water heater replacement · All local guides