Storage tank
$1,600–$2,400Typical cost, including installation
WATER HEATER REPLACEMENT IN LONGMONT
Longmont Water Heater
Replacement
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See what replacement costs ↓LONGMONT AT A GLANCE
Replacing a water heater in Longmont.
Longmont charges a flat $40 permit for a water heater (FY2026 fee manual), issued by the city's Building Services Division. Electricity comes from the city-owned Longmont Power & Communications, whose Efficiency Works program pays up to $400 for a heat pump water heater that replaces gas and up to $600 if it replaces electric. City water is soft, 1-2 grains per gallon.
- Permit to replace with the same type
- Yes · City of Longmont Building Services (Planning & Development Services)
- Permit fee
- $40 flat 'Water heaters' permit fee (FY2026 fee manual, March 2026)
- Who gets the permit
- A homeowner can act as their own contractor on their own property without a contractor's license. Any subcontractor must be licensed to work in Longmont, and the homeowner is then responsible for inspections and sign-offs.
- Electric utility
- Longmont Power & Communications (LPC)
- Water
- City of Longmont · Soft: typically 1-2 grains per gallon; average total hardness 21.7 ppm (2025 Water Quality Report). The city says a water softener is not recommended.
- Rebate worth checking
- Efficiency Works retail rebate: heat pump water heater (Active)
- Typical home
- Built 1991 (median) · 63% owner-occupied
- Companies found
- 10 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 Longmont averages or guaranteed quotes.
Compare what each quote includes.Equipment · Labor · Permits · Old heater removalHow to compare quotes →
What we know about prices in Longmont
- National installer’s published rangeThe ranges above. Home Depot ↗
- Local permit fee$40 flat 'Water heaters' permit fee (FY2026 fee manual, March 2026). City of Longmont Building Services (Planning & Development Services) fee source ↗
- Local company’s advertised price8 of the companies listed for Longmont post water heater prices or specials on their websites: Applewood Plumbing Heating & Electric, Brothers Plumbing, Heating and Electric, Colorado Green Plumbing, Heating & Cooling, Flatirons Plumbing, Heating & Air, Hot Water Now!, Mr. Rooter Plumbing of Northern Colorado, Plumbline Services, Canyon Plumbing & Heating, Inc.. Each offer has its own conditions.
- Measured local dataNot collected yet, so no Longmont average is shown.
What can change the price in Longmont?
The fee manual says any change to electrical, gas, mechanical or plumbing service needs a permit, including moving a gas line. We found no other details specific to water heaters.
02 / COMPANIES WE FOUND
Who replaces water heaters in Longmont?
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 →
What the reviews say
Water heater feedback Company-hosted testimonials praise tankless diagnosis and follow-up, direct contact with the owner, and quick replacement at a reasonable price.
Worth knowing No water heater complaints found in the sources checked.
3 water heater reviews read, checked September 29, 2026.
Applewood Plumbing Heating & Electric
Lists Longmont among the areas it serves. Based in Denver, CO.
- Tank
- Tankless
- Heat pump
- Repair
Published price: Coupon: "$50 OFF Any Plumbing Service" — covers items including "Water Heater Tune Up and Flush" (Limit one coupon per transaction; Valid through September 30, 2026). No water heater replacement price published —
What the reviews say
Water heater feedback A reviewer praised next-morning water heater replacement.
Worth knowing A water heater customer disputed the installation price and warranty choices.
2 water heater reviews read, checked September 29, 2026.
Blue Sky Plumbing, Heating, Cooling & Electrical
Lists Longmont among the areas it serves.
- Tank
- Tankless
- Repair
- Emergency service
What the reviews say
Water heater feedback A reviewer said Blue Sky made them feel they got full value on a boiler and water heater replacement, and a BBB complainant said a follow-up visit fixed their installation problems.
Worth knowing One BBB complainant said Blue Sky charged for a warranty replacement water tank; Blue Sky said an internal policy change caused confusion, issued a $2,977.52 credit and the customer accepted.
3 water heater reviews read, checked September 29, 2026.
Brothers Plumbing, Heating and Electric
Lists Longmont among the areas it serves.
- Tank
- Tankless
- Repair
Published price: Coupon: "$150.00 Off Water Heater Installation" (also a general "$50 Off Work Performed*" offer) — and
What the reviews say
Water heater feedback One customer praised fast scheduling and communication after their water heater failed.
Worth knowing Another customer reported recurring water heater faults and poor follow-up.
2 water heater reviews read, checked September 29, 2026.
Colorado Green Plumbing, Heating & Cooling
Lists Longmont among the areas it serves. Based in Erie, CO.
- Tank
- Tankless
- Repair
Published price: Coupon: "$200 off the purchase and installation of a new water heater." —
What the reviews say
Water heater feedback Company-hosted testimonials praise responsive scheduling, maintenance advice and clear explanations during tank and tankless installs.
Worth knowing No water heater complaints found in the sources checked.
3 water heater reviews read, checked September 29, 2026.
Flatirons Plumbing, Heating & Air
Lists Longmont among the areas it serves. Based in Arvada, CO.
- Tank
- Tankless
- Repair
- Emergency service
Published price: Coupon: "$75 Off Water Heater Services" (must be presented at time of service/estimate; not valid for work previously completed; cannot be combined) —
What the reviews say
Water heater feedback Angi reviewers praised same-day or same-night water heater replacement, technicians who explained options with photos, and professional installers.
Worth knowing A February 2025 BBB complainant said a $4,589.24 replacement cost far more than another contractor's price, was never inspected despite promised code work, ran loudly, and came without an itemized invoice.
5 water heater reviews read, checked September 29, 2026.
Hot Water Now!
Lists Longmont among the areas it serves. Based in Lakewood, CO.
- Tank
- Tankless
- Heat pump
- Repair
- Emergency service
Published price: Homepage coupons: "MILITARY 5% DISCOUNT", "FIRST RESPONDERS 5% DISCOUNT", "TEACHERS 5% DISCOUNT". No water heater price published —
What the reviews say
Water heater feedback One reviewer praised tankless water heater exhaust-piping work and cleanup.
Worth knowing Too little water heater replacement feedback to assess installation pricing or outcomes.
1 water heater review read, checked September 29, 2026.
Mr. Rooter Plumbing of Northern Colorado
Lists Longmont among the areas it serves.
- Tank
- Tankless
- Heat pump
- Repair
- Emergency service
Published price: Special offers: "$200 Off Water Heater Special" and "$500 Off Tankless Water Heater Installation" (Expires: 09/30/2026) — Installation page FAQ states homeowners "tend to pay an expected sum of $500 to $3,000 for the complete installation, including the price of the water heater itself" —
What the reviews say
Water heater feedback Customers quoted on the company's site praised weekend water heater replacements with added code or safety improvements, and help with tankless units.
Worth knowing No water heater complaints found in the sources checked; one company-hosted review mentions a supplier-damaged unit delaying a replacement, which the reviewer did not attribute to the plumber.
4 water heater reviews read, checked September 29, 2026.
Plumbline Services
Lists Longmont among the areas it serves.
- Tank
- Emergency service
Published price: Coupon: "$250 Off a Water Heater Installation" (promo code 250-waterheater, expires 12/29/2026; existing residential only) — Water heater page also states a "$49 service fee (we waive the service charge if you choose us to repair the issue)" and that in-home estimates are free —
What the reviews say
Water heater feedback BBB reviewers praised replacements of old water heaters, clear explanations of options and code-related parts, and quotes that held without add-ons.
Worth knowing In a September 2026 BBB review, a customer said a water heater installed August 21, 2026 needed four return visits for the same loss of hot water; no business reply was shown.
4 water heater reviews read, checked September 29, 2026.
Canyon Plumbing & Heating, Inc.
Lists Longmont among the areas it serves. Based in Boulder, CO.
- Tank
- Tankless
- Repair
- Emergency service
Published price: Coupons: "$150 OFF Water Heater Installation or Replacement" and "$250 OFF Tankless Water Heater Installation or Replacement" (also "$50 Any Service") —
What the reviews say
We haven’t found reviews that mention this company’s water heater work yet.
Order: companies based in Longmont 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. Colorado DORA license lookup ↗.
FROM COMPANIES SERVING LONGMONT
Photos of water heater jobs from these companies.
HOMES IN LONGMONT
What Longmont homes are like.
1991Median year built
37%Built before 1980
63%Owner-occupied
75%Heat with utility gas
68%Single-family homes
The median home was built in 1991. A first or second replacement is common in homes this age.
75% 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 Longmont.
Very soft water
Longmont's water usually has only 1-2 grains per gallon of hardness, and the city doesn't recommend a softener. The city says white bits in the water come from a water heater dip tube breaking down.
City-owned electric utility
Longmont homes get electricity from Longmont Power & Communications, not Xcel, so electric rebates come through Efficiency Works instead of Xcel.
ENERGY & WATER
Who supplies Longmont homes.
Energy
- Electric: Longmont Power & Communications (LPC) (Public power utility owned by the city; part owner of Platte River Power Authority)
Longmont Power & Communications ↗ · LPC: Building Electrification ↗
Water
City of Longmont: Soft: typically 1-2 grains per gallon; average total hardness 21.7 ppm (2025 Water Quality Report). The city says a water softener is not recommended.
REBATES & CREDITS
Rebates for Longmont homes.
For Longmont Power & Communications (LPC) customers in Longmont. Ask installers for the price before rebates, then check with the program that you qualify.
- Efficiency Works retail rebate: heat pump water heater ↗ActiveFor LPC electric customers: up to $600 for an ENERGY STAR heat pump water heater that replaces an electric water heater, or up to $400 if it replaces gas (Retail Products Rebates sheet revised January 2026).
- Boulder County EnergySmart Income-Qualified Rebates (2026) ↗ActiveBoulder County households at or below 100% of area median income can get 50% of the cost of upgrades, heat pump water heaters included, up to $2,000 a year.
- Colorado heat pump tax credit ↗Active for 2026 installs$250 credit for an ENERGY STAR heat pump water heater installed in 2026, claimed by a state-registered contractor, who must pass at least $83 to you as an invoice discount.
- Federal Energy Efficient Home Improvement Credit (25C) ↗EndedCovered improvements made through December 31, 2025.
Checked September 29, 2026. Who qualifies and the conditions: Colorado rebates · How to check an incentive.
PERMITS & LICENSING
Permits and licenses in Longmont.
Permits and who issues them
Longmont lists water heaters under 'Appliances and Mechanical Systems' that need a permit. The Building Services Division (385 Kimbark St.) reviews and issues permits, and the work is inspected.
Yes. Longmont issues yearly contractor licenses. Class D Plumbing and Mechanical is $75, plus a one-time $25 sales/use tax license for new contractors (FY2026 fee manual).
City of Longmont Building Services (Planning & Development Services) ↗ · City of Longmont: Permits ↗ · City of Longmont FY2026 Planning & Development Services Fee Manual ↗
Check the installer’s license
Ask for the license number and search it yourself on the Colorado DORA license lookup ↗. A listing on Ember & Tank is not a license check. Colorado licensing explained →
NEARBY CITIES
Compare places near Longmont.
| City | Distance | Permit to replace | Fee | Electric |
|---|---|---|---|---|
| Gunbarrel | 8 mi | Required (county) | By job value (from $38.95) | Xcel Energy |
| Erie | 9 mi | Required | $35 | United Power, Xcel Energy |
| Berthoud | 11 mi | Required | $150 | Xcel Energy, Poudre Valley REA |
| Lafayette | 12 mi | Required | $100 | Xcel Energy |
| Boulder | 13 mi | Required | By job value (from $13.60) | Xcel Energy |
| Johnstown | 14 mi | Required | By job value (from $23.50) | Xcel Energy, United Power, Poudre Valley REA |
COMMON QUESTIONS
Longmont water heater questions.
How much is a water heater permit in Longmont?
The FY2026 fee manual lists a $40 flat fee for water heaters.
What rebate can I get for a heat pump water heater in Longmont?
Efficiency Works gives LPC customers up to $400 for replacing a gas water heater or up to $600 for replacing an electric one (ENERGY STAR models). Apply within 45 days. Households that qualify by income may also get Boulder County EnergySmart rebates.
Efficiency Works: Home rebates ↗ · Efficiency Works Retail Products Rebates (Jan 2026) ↗
Can I replace my own water heater in Longmont?
Yes. Homeowners can act as their own contractor on their own property. Any subcontractor must have a Longmont license.
More guides: Colorado water heater replacement · All local guides