Since 2000, Mainstream Electric, Heating, Cooling & Plumbing has been Spokane’s trusted expert for furnace replacements—offering honest advice, efficient installs, and the same care we’d give our own home.
When repairs just aren’t enough, Mainstream is here with reliable, energy-efficient furnace replacement solutions. Whether your system has aged out or broken down unexpectedly, our licensed technicians will walk you through your best options—no pressure, just honest guidance and expert installation.
We’re available 24 hours for emergency service, so you’re never left without heat when it matters most. And with our Home Maintenance Care Club, you’ll receive ongoing support after your installation, including seasonal tune-ups and priority service—because your long-term comfort is always our priority.
Welcome to Mainstream Home Services – your one-stop solution for all your electrical, heating, cooling, and plumbing needs. Here’s why you should trust us with your home services:
We respect your time and prioritize efficient communication. We ensure minimal wait times for our technicians, allowing you to spend more time enjoying your home. Expect a call before our technician arrives, giving you the flexibility to plan your day accordingly.
No surprises, no hidden costs. Our upfront pricing provides competitive quotes tailored to your specific service requirements. You'll receive a detailed breakdown of the work involved, ensuring transparency and total peace of mind.
Our friendly, skilled technicians are experts in electrical, heating, cooling, and plumbing services. With state-of-the-art tools and expertise, we guarantee precise, code-compliant work. Your home will be left spotless, reflecting our commitment to cleanliness and professionalism.
We proudly service the following cities and neighborhoods in Spokane & Northern Idaho:
Not seeing your area? Give us a call at 509-237-6483
Ready to elevate your home’s comfort? Discover a variety of services beyond heating repairs that cater to your every need. Explore the full range by clicking the links below:
When considering furnace installation or replacement costs, it’s essential to understand the various factors that can influence the final price. Here’s a breakdown of typical costs and the factors that affect them:
Average Installation Cost: The average for a full furnace installation ranges from $4,820 to $9,350. This includes the cost of the furnace itself, labor fees, ductwork, removal, and disposal of the old furnace, as well as other installation costs or upgrades included.
Type of Furnace: The type of furnace you choose significantly impacts the installation cost. Here’s a breakdown of average installation costs for different types of furnaces:
Size and BTU Capacity: The size of the furnace is determined by the British Thermal Units (BTUs) required to heat your home. The cost of a furnace is influenced by its BTU capacity, with larger units costing more. The BTU requirement is calculated based on the square footage of your home, typically around 40 BTUs per square foot. Additional factors such as cathedral ceilings or drafty windows may require adjustments to the BTU calculation.
Installation vs. Replacement: Whether you’re installing a new furnace or replacing an existing one also affects the overall cost. Replacing an old furnace with a new one may be more cost-effective as existing infrastructure can be utilized. However, converting from one type of furnace to another or relocating the furnace may require additional work and incur higher costs.
Additional Installation Considerations: Factors such as ductwork requirements, location changes, and any necessary upgrades or modifications to accommodate the new furnace also contribute to the overall installation cost. HVAC duct installation typically costs between $10 and $20 per linear foot.
At Mainstream, we understand the importance of providing transparent pricing and delivering exceptional value to our customers. Our experienced technicians ensure efficient and professional furnace installations tailored to your specific needs, ensuring optimal comfort and performance for your home. Contact us today to schedule a consultation and receive a personalized quote for your furnace installation or replacement. With Mainstream, expect reliable service and expert solutions for all your heating needs.
When you make a big, long-lasting purchase like a furnace for your home, you want to be informed. The different types of furnaces are suited to different homes, climates, and lifestyles. Mainstream will help you decide between electric, gas, and oil, what size of furnace you need, and what brand is best.
If you’re experiencing issues with an existing furnace, we can help you answer that question! You may just need furnace repairs. Even if you’re considering a new furnace because your current one isn’t getting the house warm enough, you may just need a furnace tune-up to help it heat better.
The 3 main types of new furnace installations available are:
Gas furnaces are the most commonly installed furnaces in Spokane homes.
More efficient than installed oil furnaces, but less than electric, gas furnaces are typically the cheapest to run, as they use natural gas as an energy source. With this, your home runs the risk of creating a buildup of carbon monoxide, and your furnace will require on-going maintenance throughout its life.
Gas furnaces are, however, the least expensive model to run using natural gas, making them a favorable choice for furnace replacement.
The electric furnace is another popular choice for homeowners. Electric furnace installations are less expensive, as they require only electricity and not natural gas line piping installation or oil storage tanks.
On the flip-side, electrical furnaces are the most expensive to run due to their high usage of electricity. Electric furnaces still remain a common furnace replacement option with their comparatively lower purchase costs & minimal lifespan maintenance.
Oil furnaces are not what they once were in Spokane, but they still offer some attractive benefits. Oil furnaces are able to heat large spaces evenly & have less emissions than gas furnaces, with no risk of carbon monoxide leakage in your home.
However, oil furnaces do require an on-site oil storage tank for fuel & an oil delivery service. Oil is typically more expensive than natural gas and has the lowest efficiency rating for heating per its energy source.
No matter the problem, our furnace installation technicians will determine your heating & furnace needs and finances before any work is done, so you will know what solution is best & most affordable for your new furnace system.
Your furnace is a large, complex unit that will deliver years of exceptional heating to your entire home. It is important that it’s installed correctly, otherwise this costly investment can go to waste.
Multiple factors determine the overall cost of a new furnace installation, but the type of furnace you choose has the largest impact. Our expert HVAC technicians at Mainstream Electric, Heating, Cooling, & Plumbing will help you find the perfect furnace to install that’s best for your Spokane Valley, Washington home.
There’s no getting around the fact that a new furnace is a relatively expensive purchase! Depending on any number of factors like size, energy efficiency, and style, a furnace can cost as little as $1,500 and up to several thousand dollars.
That’s why, at Mainstream, we offer a new furnace installation financing plan: pay $0 down and as low as $89 a month!
When your furnace is beyond repair, you need a replacement that restores comfort without the stress. At Mainstream, we provide professional furnace replacement services in Spokane and surrounding communities, offering expert guidance, fast installation, and honest recommendations tailored to your home and budget.
With more than 20 years of experience and deep roots in the Inland Northwest, we’ve seen it all—aging units, oversized systems, rising energy bills, and surprise breakdowns in the middle of winter. Our licensed HVAC professionals will help you choose the right high-efficiency system, install it correctly, and make sure you’re set up for long-term performance and savings.
Every furnace reaches a point where repair is no longer the best option. If your system is over 15 years old, needs frequent repairs, heats unevenly, or drives up your energy bills, it may be time to consider a replacement. At Mainstream, we never rush the process or push for a new system unless it truly makes sense for your home.
We start with a thorough inspection to determine whether a repair is still feasible or if a furnace installation will serve you better in the long run. If replacement is the right path, we’ll walk you through your options, from energy-efficient gas furnaces to systems that integrate seamlessly with your existing thermostat and ductwork.
Modern furnaces are significantly more efficient than older models. Upgrading to a high-efficiency unit can reduce your monthly heating costs, improve indoor air quality, and keep your home more comfortable during Spokane’s coldest months. You’ll also experience fewer service calls, quieter operation, and better system control with modern thermostats and zoning systems.
Our team handles every aspect of the replacement—from removing the old unit to ensuring your new system is properly sized and safely connected. We treat your home with care, clean up when we’re done, and ensure your heat is running strong before we leave.
Furnaces don’t wait for business hours to fail—and neither do we. Mainstream offers 24/7 emergency HVAC services, including same-day furnace replacements when necessary. If your heat goes out during a cold snap, our team will respond quickly, assess the situation, and work to restore your comfort as fast as possible.
We’re homeowners too, and we know how stressful a major HVAC issue can be. That’s why we’re always ready to pick up the phone—and always prepared to bring the tools, equipment, and experience needed to solve the problem on the spot.
After your new furnace is installed, keeping it in top shape is easy with the Mainstream Home Maintenance Care Club. Club members receive seasonal HVAC tune-ups, discounted repairs, and priority scheduling year-round—ensuring your new system runs smoothly for years to come.
Regular maintenance not only prevents unexpected breakdowns, but it also protects your warranty and extends the lifespan of your new equipment. With our Care Club, you’ll get peace of mind knowing your investment is supported by Spokane’s most trusted HVAC professionals.
At Mainstream, we believe furnace replacement is just one piece of the puzzle. We’re here to help you optimize your entire home environment—from airflow to air quality. If your new furnace is part of a bigger home upgrade, our team can also provide duct cleaning services to improve circulation and reduce buildup in your HVAC system.
We also offer high-performance air filters and purification systems that work with your new furnace to improve indoor air quality for your whole family. And if you’re upgrading your heating, we can help you prepare for warmer months with seasonal air conditioning services—including installation, repairs, and system maintenance.
Need a trusted pro for more than just HVAC? Mainstream is your go-to for plumbing services, electrical work, and other essential home solutions—all delivered with integrity, craftsmanship, and community pride.
Since 2000, we’ve served thousands of families throughout Spokane County and Northern Idaho, always with one mission: to treat every home like it’s our own. That means we show up on time, communicate clearly, offer transparent pricing, and stand behind our work. Whether you’re replacing an old furnace or planning a full HVAC upgrade, you can count on Mainstream to put your comfort and peace of mind first.
Mainstream is Spokane’s #1 plumbing, electrical, heating, and air conditioning home repair specialists.
Call today to schedule your service!
