Need a New Furnace?
Garden City Plumbing & Heating installs high-efficiency furnaces that keep your home warm, lower your energy bills, and work when you need them most.
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Professional Furnace Installations in Missoula and Western Montana
Montana winters don’t cut corners—and neither do we. When it’s time to replace or install a furnace, you need a system built to handle the kind of cold we get in the Garden City area. Garden City Plumbing & Heating has been installing furnaces in Missoula and Western Montana homes since 1985. Our team knows what works here, how to size systems for local construction styles, and how to get the install done right the first time.
We install new furnaces for homes under construction, replace aging or broken units, and help homeowners upgrade to more efficient heating that pays off over time.
What Type of Furnace Do You Need?
We install a wide range of high-efficiency gas and electric furnaces built to withstand Montana winters. Whether you’re focused on performance, energy savings, or both, we’ll explain your options in plain terms.
Systems we install include:
Standard and high-efficiency gas furnaces
Variable-speed and two-stage furnaces
Electric furnaces
Zoned heating systems
Heat pump + furnace hybrid systems (dual-fuel)
Not sure what you need? We’ll break it down by what matters most: comfort, reliability, and cost of ownership—not just the sticker price.
Need a new furnace? Call (406) 481-3548 for a consultation.
Locally Trusted by Missoula Homeowners & Businesses
We’ve been doing this for nearly 40 years—and we’ve built our reputation on clean installs, dependable service, and real results. Our customers call us because they know we do the job right.
Here’s what you get:
- Fully licensed, trained installation crews
- Quality systems from trusted manufacturers
- Clear communication from quote to completion
- Local knowledge of Missoula building types and energy codes
- Post-install support and service from the same team that installed it
We’re family-owned, community-driven, and committed to the kind of workmanship we’d expect in our own homes.
When to Replace Your Furnace
Some signs are obvious—like no heat or constant repairs. Others are subtle, but just as important. We help homeowners identify when a furnace has reached the end of its lifespan and guide them through a smart replacement.
Here are some of the most common indicators:
- The furnace is 15–20 years old
- You’ve noticed rising energy bills despite normal usage
- It struggles to heat evenly or keep up in colder months
- You hear loud, strange noises during operation
- The system cycles on and off frequently
- You’ve had multiple service calls in the last year
If you’re not sure, we’ll assess your current system and give you honest feedback on whether a repair makes sense—or if it’s smarter to replace it now and avoid the risk later.
Our Furnace Installation Process
We know replacing a furnace isn’t something you do often, so we make the process as clear and low-stress as possible. Here’s what it looks like when you work with our team:
1 – Home evaluation
Before we talk systems or pricing, we take the time to understand your home. That means looking at your current setup, walking through your layout, and asking the right questions about how your home heats — and where it doesn’t. Our goal is to solve real problems, not just swap boxes.
2 – System sizing and selection
Bigger doesn’t mean better. We run the numbers to figure out exactly what size furnace your home needs — based on square footage, insulation, window exposure, and more. Then we walk you through options that fit your comfort goals and budget. We’ll explain why one model might work better than another and help you decide without pressure.
3 – Transparent estimate
Once we know what’s right for your home, we put together a clear quote that spells everything out — equipment, installation, labor, and any updates needed for ductwork or wiring. No surprises. We’ll also go over financing options or rebates if they apply.
4 – Clean, code-compliant installation
On installation day, we show up on time, remove your old system, and get to work installing your new furnace the right way. We follow all code requirements, double-check every connection, and test the system fully before we consider the job done. And yes — we clean up after ourselves.
5 – Walkthrough and support
Before we leave, we’ll walk you through how your new furnace works, how to use your thermostat, and what to expect during the first few heating cycles. We’re happy to answer questions, and if anything comes up after the install, we’re just a phone call away.
We handle everything—from permit coordination to system testing—so you don’t have to worry about a thing.
Schedule Your Furnace Installation Today. Call (406) 481-3548.
What You Get with a Professional Furnace Installation
When you install a new furnace with Garden City, you’re not just getting a box that blows warm air—you’re getting peace of mind, lower energy bills, and reliable comfort all winter long. A properly installed system:
- Delivers consistent heat throughout your home, with no cold spots
- Uses energy more efficiently, keeping monthly bills in check
- Runs quieter and breaks down less often
- Lasts longer when correctly sized and installed
- Meets all building codes, safety standards in Missoula & Missoula County
- Can improve indoor air quality when paired with updated ductwork or air filtration
We’ve installed hundreds of furnaces across the Missoula Valley—from hillside homes near Pattee Canyon to bungalows near the University District—and we bring that experience to every job.
Factors That Affect the Cost of Furnace Installation
We know that replacing a furnace—especially when it breaks unexpectedly—can feel overwhelming. Whether it’s the middle of a Missoula winter or you’re planning ahead for a more efficient system, we’re here to make the process as clear and manageable as possible. The total cost depends on several factors unique to your home, but we’ll always walk you through your options and help you make informed decisions without pressure.
Type of Furnace
Gas furnaces tend to cost less upfront than dual-fuel or high-efficiency models, but fuel availability and long-term efficiency matter too.
Home Size & Layout
Larger homes or multi-level floor plans may require more powerful units or additional zoning.
Existing Ductwork
Duct repairs or full replacement can add to the cost—but they’re often necessary to ensure proper airflow and system performance.
Installation Location
Furnaces in basements are usually easier to install than those in attics or tight crawlspaces, especially in older Missoula homes.
Fuel Source & Venting Needs
Switching from electric to gas (or vice versa) may require additional venting or line work.
Permit & Inspection Requirements
We handle this for you, but permits and city/county codes can slightly affect pricing and scheduling.
Add-Ons or System Upgrades
Upgrading thermostats, filtration systems, or adding zoning will change your final quote—but often boosts performance and efficiency.
Rebates or Financing
Utility rebates and flexible financing can help reduce the upfront cost. We help you apply for all eligible programs.
Transparent Pricing, Local Guidance, No Surprises. At Garden City Plumbing & Heating, we don’t believe in one-size-fits-all quotes. We take the time to assess your home, explain what drives the cost, and help you choose a system that works for your budget and comfort goals. Whether it’s a simple replacement or a full system upgrade, you’ll always know what to expect—no hidden fees, no surprises, just honest service from a team that lives and works right here in Missoula.
Ongoing Support After Installation
A great installation is just the beginning. We offer maintenance plans to keep your new furnace running efficiently and extend its lifespan. That means seasonal tune-ups, safety checks, and access to priority service if anything goes wrong down the road.
Want to avoid unexpected repairs or spikes in your utility bill? Ask about our annual service plans when we install your new furnace.
Frequently Asked Questions
How long does a furnace installation usually take?
Most furnace installations in Missoula can be completed in a single day, depending on whether we’re replacing an old unit or updating ductwork at the same time.
Do I need a permit to replace or install a furnace in Missoula?
Yes, Missoula County requires a mechanical permit for furnace installations. Our team handles all required permits and inspections for you.
What type of furnace is best for Montana winters?
High-efficiency gas furnaces (95%+ AFUE) are typically the best fit for Missoula’s long, cold winters. In homes without natural gas, electric furnaces or dual-fuel systems are common alternatives.
When should I replace my furnace instead of repairing it?
If your furnace is 15+ years old, needs frequent repairs, or struggles to heat your home evenly, replacement is usually more cost-effective in the long run.
Can a furnace be installed in a crawlspace or attic?
Yes, but access, insulation, and clearance need to be carefully evaluated. We’ve installed furnaces in tight Missoula crawlspaces and hillside attic configurations with custom planning.
Do I need to replace my thermostat with a new furnace?
Not always, but upgrading to a smart or programmable thermostat ensures better performance, efficiency, and comfort with your new system.
Will I need new ductwork with my furnace installation?
If your existing ducts are leaky, poorly sized, or not compatible with the new system, we may recommend repairs or replacement. We’ll inspect them as part of the quote.
Are there rebates or financing options available for new furnaces?
Yes—Garden City helps you apply for available utility rebates and offers flexible financing options to spread out your investment over time.
Other Heating Systems
Heat Pump Installation & Repair
Heat pumps are a year-round comfort solution. During the winter, they keep your home warm and toasty … and they provide reliable cooling when summer temperatures reach their peak. And with superior efficiency, you’ll enjoy lower energy bills in every season!
Air Handler Installation & Repair
Many businesses and larger homes use air handlers to provide efficient heating and cooling of large spaces. Our extensive experience includes equipping many of Missoula’s prominent buildings with the systems that keep their occupants consistently comfortable.
Radiant Heating Installation
Radiant floor systems offer quiet, even heat—perfect for homes with tile floors, basements, or open layouts. Popular in South Hills and newer Missoula builds, it’s a great duct-free comfort solution.
HVAC Zone Controls
Are parts of your home never warm or cool enough? Are family members constantly fighting over the thermostat? Today’s home zoning systems can deliver different temperatures to different parts of your home, so everyone has the comfort they desire.
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