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Water Heater Replacement Cost Calculator — Great Falls MT

Water heater replacement in Great Falls MT, Montana costs notably below the national average. Fuel type (gas vs. electric), tank vs. tankless, and capacity are the main cost factors.

Low estimate$800
Average$2,000
High estimate$5,200

Home square footage

Home square footage 1800

Quality Tier

Standard materials, solid craftsmanship

Scope of Work

Labor

Labor portion of total cost 40%

Water Heater Replacement Cost in Great Falls MT: 2026 Guide

Use the calculator above to get a quick estimate. The guide below explains what drives water heater replacement costs in Great Falls MT and what to expect from contractors in Great Falls MT.

Typical Water Heater Replacement Costs in Great Falls MT

Project ScopeLowHigh
Electric tank (50 gal), basic install$300$500
Gas tank (50 gal), standard install$800$1,600
Electric tankless, standard install$1,600$2,000
Gas tankless, full install with permits$2,000$5,200

What Affects Water Heater Replacement Costs in Great Falls MT?

Labor rates: Contractors in Great Falls MT charge $39–$78/hour for water heater replacement work — notably below the national average.

Material costs: Material prices in the Mountain region are notably below national average due to local supply, transportation costs, and market demand.

Project complexity: Site conditions, permitting requirements, and non-standard layouts can add 15–30% to total project cost.

Frequently Asked Questions

How much does water heater replacement cost in Great Falls MT?
Water heater replacement in Great Falls MT costs $800–$5,200. A standard 50-gallon gas tank unit runs $800–$1,600 installed. A tankless gas unit costs $2,000–$5,200 installed. Electric units are generally $200–$400 less than gas.
How long does a water heater last in Great Falls MT?
Tank water heaters last 10–15 years. Tankless units last 20+ years with proper maintenance. In Great Falls MT, hard water can shorten tank life by 2–5 years. Annual flushing extends life significantly.
Tank vs. tankless water heater — which is better in Great Falls MT?
Tankless heaters cost 2–3x more upfront but use 25–35% less energy and last longer. In Great Falls MT, a tankless unit typically pays back in 7–12 years. For homes with high hot water demand (3+ people), tankless is often the better long-term choice.
Can I install a water heater myself in Great Falls MT?
While possible for a licensed plumber, DIY water heater installation in Great Falls MT typically voids the warranty and may not pass inspection. Most municipalities require a permit and licensed plumber. Hiring a pro costs $400–$800 but ensures proper venting, seismic strapping (where required), and code compliance.

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Estimated cost in Great Falls MT

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Range: $0 – $0
Materials$0
Labor$0
City multiplier0.87x

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