Water Heater Installation in Longmont
Get fast, fair pricing from licensed local pros. Typical Longmont cost: $1.1k – $2.6k installed.
- Standard tank install
- $1.1k – $2.6k
- Tankless install
- $3k – $6.5k+
- New gas line run
- $375 – $1.3k
- Permit & inspection
- $55 – $375
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Water heater installation cost by job.
Installed-labor pricing for Longmont, adjusted for local rates. Relocations and gas-line upgrades add to the base.
In Longmont, Colorado, the typical cost to install a standard tank water heater ranges from $850 to $1,950, while tankless installations run $1,950 to $4,900 or more. Labor rates reflect the local median household income of $89,720, and most homes built around 1989 may require updates like a new gas line ($325–$1,100) or an expansion tank on closed systems. The city follows the International Plumbing Code, and a permit is required—though emergency replacements can start before the permit is issued, with paperwork filed the next business day. Cold semi-arid winters mean cold inlet water, so a well-sized unit is key. Many homes use gas, but the federal 25C tax credit (30%, up to $2,000) makes heat pump water heaters an attractive option for those seeking efficiency.
- Standard tank install (like-for-like)Same fuel, same location$1,100 – $2,600
- Tankless installationWall mount, new venting, larger gas line$3,000 – $6,500+
- Electric-to-gas conversionNew gas line + venting required$2,200 – $5,400
- New gas line runDistance and access drive cost$375 – $1,300
- Permit & inspectionRequired in most jurisdictions$55 – $375
* Relocating the unit or upsizing the gas line adds the most to a base install.
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
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Your pro confirms the price on-site and gets your hot water back. Most jobs done in a few hours.
Water Heater Installation in Longmont, explained.
What affects installation costs in Longmont?
Costs depend on the unit type—standard tank vs. tankless or heat pump—and any needed upgrades like a new gas line or expansion tank. Older homes (median built 1989) may need venting or electrical work. Permit fees and labor rates also factor in. Choosing a more affordable standard tank install can save money upfront, while a heat pump unit may qualify for the federal tax credit.
Common water heater installation issues in Longmont
Closed system expansion tank
Longmont's code requires an expansion tank on closed water systems to prevent pressure buildup, adding to the install cost.
Cold inlet water temperature
Winter inlet water is very cold, so a properly sized unit is needed to maintain adequate hot water flow.
Permit timing for emergencies
Emergency replacements can begin before a permit is issued, but the permit must be obtained the next business day.
What to expect during installation
A licensed plumber will first assess your existing setup, including gas lines and venting. They'll obtain the required permit (or start work in an emergency). The old unit is disconnected and removed, then the new water heater is installed, connected, and tested. An expansion tank is added if needed. The job typically takes 4–8 hours.
Water Heater Installation FAQs — Longmont
Yes, a permit is required. However, for emergency replacements, work can begin before the permit is issued, as long as it's obtained the next business day.
Water Heater Installation near Longmont
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