Furnace Replacement cost: Great Falls vs Missoula (2026)
In 2026, furnace replacement is about 1% more expensive in Great Falls than in Missoula. Most homeowners pay around $5,750 in Great Falls versus $5,700 in Missoula — a gap of roughly $50.
Great Falls MT
Typically around $5,750
Missoula MT
Lower costTypically around $5,700
Great Falls vs Missoula: full breakdown
| Factor | Great Falls | Missoula |
|---|---|---|
| Typical 2026 cost | $5,750 | $5,700 |
| Estimated range | $4,100–$7,350 | $4,050–$7,300 |
| Labor index (vs US) | ×0.95 | ×0.94 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.08 | ×1.08 |
| Local permit | $200 | $200 |
| Labor share | $3,450 | $3,400 |
| Materials/equipment | $2,300 | $2,300 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national furnace replacement range for local labor, climate and permits.
Is the gap worth worrying about?
That 1% gap is small — for furnace replacement it's usually less than the spread between two local contractors' quotes, so the metro matters far less than who you hire and when you buy.
Cheapest time for furnace replacement in either city
HVAC demand collapses in the mild shoulder seasons, so installers discount to keep crews busy. The most expensive time to buy is during a heat wave or cold snap, when a dead system forces a full-price emergency replacement.
How much should you really budget for HVAC in 2026?
Sizing, efficiency tier and brand pull a quote in different directions. Here's how our editors weigh the trade-offs that decide what you actually pay.
The budget-first case
Size the system to your home with a Manual J calculation and buy the standard efficiency tier (80% AFUE / 14.3 SEER2). In a mild climate the cheaper unit pays off because you rarely run it hard — paying for premium efficiency you won't use is the most common way to overspend.
The efficiency-first case
In a hot-summer or cold-winter region, a higher SEER2/AFUE unit — or a heat pump — earns its premium back in lower bills, and the federal 25C/25D credits plus utility rebates cut thousands off the sticker. Run the payback math before defaulting to the cheapest box.
The longevity case
The single biggest cost driver isn't the brand — it's correct sizing and install quality. A properly sized, well-commissioned mid-tier system with annual maintenance outlasts an oversized premium unit that short-cycles. Spend on the install, not the badge.
Match the efficiency tier to your climate, insist on a real load calculation, and stack every rebate you qualify for. The expensive mistakes are wrong sizing and a rushed install — not picking the "wrong" brand.
Great Falls vs Missoula
Is furnace replacement cheaper in Great Falls or Missoula?
In 2026, furnace replacement is cheaper in Missoula at about $5,700, versus $5,750 in Great Falls — a difference of about $50 (1%).
Why does furnace replacement cost more in Great Falls than Missoula?
The main driver is local labor rates: Great Falls's labor index is 0.95 versus 0.94 in Missoula. Climate zone (cold vs cold) also shift the total.
How much is furnace replacement in Great Falls, MT?
In Great Falls, furnace replacement typically runs $4,100–$7,350 in 2026, with most homeowners paying around $5,750.
When is the cheapest time to buy furnace replacement — and does it differ by city?
The best window is the same in both Great Falls and Missoula: Spring and fall (Mar–May, Sep–Oct), when demand drops and installers discount to keep crews busy — typically 5–15% off peak pricing. The most expensive time anywhere is an emergency replacement during peak summer and mid-winter.
Should I choose where to live based on furnace replacement cost?
Rarely. The $50 difference is real but one-time, and you can often close most of it in Great Falls by buying in the off-season and getting tighter, apples-to-apples bids. Ongoing factors — energy prices, climate and home condition — matter more over the life of the system.
Compare furnace replacement in other cities
Updated June 2026 · By Serhat Özçelik