Water Heater Replacement in Great Falls
Get fast, fair pricing from licensed local pros. Typical Great Falls cost: $1.1k – $2.7k installed.
- Tank, gas
- $1.1k – $2.7k
- Tank, electric
- $950 – $2.4k
- Tankless, gas
- $2.8k – $5.7k+
- Heat pump hybrid
- $2.4k – $5.2k
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Water heater replacement cost by type.
Installed prices for Great Falls, adjusted for local labor. Larger tanks and code upgrades move the number up.
Water heater replacement in Great Falls, Montana, typically costs between $750 and $3,800 depending on the unit type and installation complexity. With a median home built in 1965, many homes have aging tanks that need replacement. The cold northern climate and cold winter inlet water make heat pump water heaters a strong fit, as they are highly efficient and qualify for the federal 25C tax credit (30%, up to $2,000). Local permits are required under the 2021 Uniform Plumbing Code, and must be pulled by a licensed Montana master plumber or plumbing contractor. No state-level rebates are currently available, but the federal credit can offset costs.
- Tank, 40–50 gal gasThe default for most US homes$1,150 – $2,700
- Tank, 40–50 gal electricNo venting required$950 – $2,400
- Tankless, gasEndless hot water, higher BTU gas line often needed$2,800 – $5,700+
- Hybrid heat pumpMost efficient, qualifies for federal credits$2,400 – $5,200
- Permit & disposalMost jurisdictions require it$45 – $325
* Cold-region homes may need extra insulation or larger tanks.
Water heaters in Great Falls
U.S. Census ACS- Households
- 24,149
- Homeowners
- 17,029
- 61% own
- Median home value
- $223,700
- Median income
- $58,272
- Median home built
- 1965
- Housing units
- 28,089
With a median home built in 1965, many Great Falls water heaters are at or past their 8–12 year lifespan — a common reason replacements spike here.
What’s different about Great Falls.
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 Great Falls
Given Montana’s cold northern continental climate and mixed water heating, heat-pump (hybrid) is the sensible default for most Great Falls 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: Montana DEQ Home Energy Rebates Program · Montana Plumbing Code 2018/UPC - Chapter 5 Water Heaters (UpCodes) · Montana DLI Plumbing Permits
What Great Falls code requires
Replacing a water heater in Great Falls follows Montana rules under the Uniform Plumbing Code (UPC). 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 codeUniform Plumbing Code (UPC)
- Good to know—
Montana adopted the 2021 UPC statewide (effective June 2022), and permits for water heater replacement generally must be pulled by a licensed Montana master plumber or plumbing contractor, with limited homeowner exceptions.
Sources: Montana DEQ Home Energy Rebates Program · Montana Plumbing Code 2018/UPC - Chapter 5 Water Heaters (UpCodes) · Montana DLI Plumbing Permits
Not sure which rules and rebates apply to your home?
A licensed Great Falls 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 Great Falls
Montana water heating is mostly mixed, which shapes the money back:
- Federal30% of cost, up to $2,000Federal 25C tax credit →
For a qualifying ENERGY STAR heat pump water heater. Claimed on your federal return.
Montana's statewide Home Energy Rebates Program is not currently active (paused pending U.S. DOE approval), so no verifiable state-level water-heater rebate is available; the federal 25C tax credit (30%, up to $2,000 for a heat pump water heater) applies in every state.
Ready to get your water heater fixed in Great Falls?
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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 Great Falls, explained.
What affects water heater replacement cost in Great Falls?
Prices vary by unit type: tank gas ($750–$1,900), tank electric ($850–$2,100), tankless ($1,400–$3,300+), and heat pump ($1,700–$3,800). Labor costs reflect local rates and the need for a licensed plumber to pull permits. Older homes may require additional work to meet current code, such as adding an expansion tank on closed systems. The cold climate may also influence the choice of unit, with heat pump models being more efficient but higher upfront.
Common water heater issues in Great Falls
Sediment buildup
Hard water and sediment from the municipal supply can accumulate in the tank, reducing efficiency and causing noise or leaks.
Cold inlet water
Winter inlet water temperatures can be very cold, increasing recovery time and energy use, especially for older tanks.
Permit and code compliance
Replacement requires a permit and must comply with the 2021 UPC, including expansion tank requirements on closed systems.
What to expect during water heater replacement
A licensed plumber will first obtain the required permit from the city. The job typically takes 2–4 hours, including disconnecting the old unit, installing the new one, and checking for leaks. The plumber will ensure code compliance, such as installing an expansion tank if needed. After installation, you'll receive an upfront cost estimate and a warranty on parts and labor.
Water Heater Replacement FAQs — Great Falls
Yes, a permit is required under the 2021 Uniform Plumbing Code. It must be pulled by a licensed Montana master plumber or plumbing contractor, with limited homeowner exceptions.
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