Water Heater Replacement in Longmont
Get fast, fair pricing from licensed local pros. Typical Longmont cost: $1.3k – $3k installed.
- Tank, gas
- $1.3k – $3k
- Tank, electric
- $1.1k – $2.7k
- Tankless, gas
- $3.3k – $6.5k+
- Heat pump hybrid
- $2.7k – $6k
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Water heater replacement cost by type.
Installed prices for Longmont, adjusted for local labor. Larger tanks and code upgrades move the number up.
In Longmont, where the median home was built in 1989, many water heaters are approaching or past their expected lifespan. With cold semi-arid winters and cold inlet water, replacement costs typically range from $850 for a standard gas tank to over $4,300 for a heat pump unit. Local permits are required under the International Plumbing Code, and expansion tanks are mandatory on closed systems. For most homes, a gas tank or tankless unit is a strong fit, though heat pump models qualify for a federal 25C tax credit of up to $2,000.
- Tank, 40–50 gal gasThe default for most US homes$1,300 – $3,000
- Tank, 40–50 gal electricNo venting required$1,100 – $2,700
- Tankless, gasEndless hot water, higher BTU gas line often needed$3,300 – $6,500+
- Hybrid heat pumpMost efficient, qualifies for federal credits$2,700 – $6,000
- Permit & disposalMost jurisdictions require it$55 – $375
* Cold-region homes may need extra insulation or larger tanks.
Water heaters in Longmont
U.S. Census ACS- Households
- 39,313
- Homeowners
- 25,270
- 61% own
- Median home value
- $488,100
- Median income
- $89,720
- Median home built
- 1989
- Housing units
- 41,429
With a median home built in 1989, many Longmont water heaters are at or past their 8–12 year lifespan — a common reason replacements spike here.
What’s different about Longmont.
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 Longmont
Given Colorado’s cold semi-arid (continental) climate and gas water heating, tank or tankless is the sensible default for most Longmont 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: Colorado Heat Pump Tax Credits - Colorado Energy Office · Colorado State Plumbing Board: Permit and Inspection Information · EIA Colorado State Energy Data
What Longmont code requires
Replacing a water heater in Longmont follows Colorado rules under the International Plumbing Code (IPC). 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 codeInternational Plumbing Code (IPC)
- Good to know—
Emergency water heater replacements may begin before a permit is issued, with the permit obtained the next business day.
Sources: Colorado Heat Pump Tax Credits - Colorado Energy Office · Colorado State Plumbing Board: Permit and Inspection Information · EIA Colorado State Energy Data
Not sure which rules and rebates apply to your home?
A licensed Longmont 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 Longmont
Colorado water heating is mostly gas, which shapes the money back:
- State$1,000 upfront rebate in 2026 (statewide, no income requirement)Colorado Heat Pump Tax Credit (Colorado Energy Office) →
State-level program — verify eligibility before you buy.
- StateUp to $1,750 for a heat pump water heaterColorado Home Electrification and Appliance Rebate (HEAR) Program →
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 Longmont?
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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
We connect you with a licensed, insured water heater specialist near you — often the same day.
- 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 Longmont, explained.
What influences water heater replacement costs in Longmont
Prices vary primarily by unit type and installation complexity. Gas tank units are generally more affordable than electric or tankless models, while heat pump units are the most expensive but offer long-term savings. Labor costs reflect local rates and the need for a permit ($50–$150). Homes with older plumbing or tight spaces may require additional work. Emergency replacements can begin before the permit is issued, but the permit must be obtained the next business day.
Common water heater problems in Longmont homes
Sediment buildup
Longmont's hard water can cause sediment accumulation at the bottom of the tank, reducing efficiency and leading to premature failure.
Cold inlet water
Winter inlet water temperatures are very cold, which can increase recovery time and stress older units, especially in larger households.
Expansion tank failure
Closed systems require an expansion tank; if it fails, pressure can damage the water heater or plumbing.
What to expect during a water heater replacement in Longmont
A licensed plumber will first obtain a permit from the city. The job typically takes 2–4 hours for a tank replacement, or 4–6 hours for a tankless unit. The old unit is disconnected and removed, and the new unit is installed per code, including an expansion tank if needed. For emergency replacements, work can start immediately, with the permit filed the next business day.
Water Heater Replacement FAQs — Longmont
Yes, a permit is required under the International Plumbing Code. However, emergency replacements may begin before the permit is issued, as long as it is obtained the next business day.
Water Heater Replacement near Longmont
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