Open Every Day, Honest Every Time. Weekend Appointments Available!
Since 2000, Mainstream Electric, Heating, Cooling & Plumbing has been Spokane and Northern Idaho’s trusted partner for reliable, energy-efficient commercial HVAC solutions.
When your building’s HVAC system falters, it’s not just inconvenient—it can cost you customers, comfort, and revenue. At Mainstream, we understand what’s at stake. That’s why we offer expert commercial HVAC services designed to keep your operations running without a hitch. Our licensed technicians deliver fast, efficient, and lasting solutions tailored to your business needs.
We proudly serve Spokane and Northern Idaho with 24-hour emergency support, so when the unexpected happens, we’re there—day or night. And because we treat your business like our own, you can count on transparent communication, fair pricing, and workmanship that’s built to last.
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:
Regular maintenance keeps your HVAC system running efficiently, reduces energy costs, prevents unexpected breakdowns, and extends the life of your equipment. Mainstream offers tailored maintenance plans that help Spokane Valley businesses avoid disruptions and stay ahead of costly repairs.
We recommend servicing your commercial HVAC system at least twice a year—typically in spring and fall. Mainstream can customize a maintenance schedule based on your building’s size, usage, and system type to keep everything operating smoothly year-round.
Frequent issues include refrigerant leaks, clogged filters, thermostat malfunctions, electrical failures, and worn belts or motors. Mainstream’s experienced technicians are trained to diagnose and resolve these problems quickly—minimizing downtime for your business.
Yes, Mainstream provides 24/7 emergency commercial HVAC repair across Spokane Valley. Whether it’s after hours, on a weekend, or during peak business hours, we’re ready to respond quickly to keep your operations running smoothly.
Mainstream works with a wide range of businesses across Spokane and Northern Idaho, including retail shops, restaurants, offices, medical facilities, and light commercial properties. No matter the size or scope, we’re here to help.
Running a successful business means staying ahead of the curve—and that includes keeping your building’s heating and cooling systems in peak condition. At Mainstream Electric, Heating, Cooling & Plumbing, we specialize in dependable, high-performance commercial HVAC services that support your operations, your team, and your bottom line.
Whether you manage a small office, a large-scale retail center, or a mixed-use property, our licensed professionals provide expert commercial HVAC repair, preventive maintenance, and new system installations throughout Spokane and Northern Idaho. With over 20 years of experience and 24/7 emergency availability, we’re the partner you can count on when comfort matters most.
HVAC issues don’t wait for a convenient time to strike—and for commercial spaces, downtime can be especially costly. From rooftop units and heat pumps to zoning systems and ductless mini-splits, our technicians are trained to diagnose and resolve complex HVAC problems fast.
Whether your system is short cycling, failing to cool properly, or producing unusual noises or odors, we provide 24/7 emergency HVAC repair so you can get back to business with minimal disruption. We stock common parts and prioritize rapid response times across Spokane, Coeur d’Alene, Post Falls, and surrounding areas. When you call Mainstream, you’re not waiting in a queue—you’re getting a local team that acts with urgency and care.
If your commercial HVAC system is aging, inefficient, or failing to meet your building’s needs, it might be time to consider a full or partial replacement. Our experts evaluate your building’s size, usage patterns, energy goals, and existing infrastructure to design a custom HVAC installation that makes sense for your business.
We offer professional HVAC installation services using high-efficiency equipment from trusted manufacturers and ensure seamless integration with your building’s electrical systems, ductwork, and smart controls. From single-zone units to advanced multi-zone commercial systems, we deliver comfort that’s engineered to last.
And because Spokane winters can be harsh and summers unpredictable, we make sure your system is optimized for all seasons—keeping your staff comfortable, your customers happy, and your energy bills in check.
The key to avoiding expensive breakdowns? Routine care. Our commercial HVAC maintenance services include comprehensive system inspections, filter changes, coil cleanings, thermostat calibration, electrical safety checks, and performance testing—everything you need to keep your system running efficiently year-round.
For added convenience and peace of mind, check out our Maintenance Care Club. Club members enjoy scheduled tune-ups, priority scheduling, and exclusive discounts on repairs. It’s the easiest way to stay on top of maintenance without juggling calendars or risking forgotten service dates.
Comfort isn’t just about temperature—it’s about air quality, humidity control, and smart building management. That’s why we offer a full suite of indoor air quality upgrades including ventilation systems, humidifiers, dehumidifiers, and air filtration units to help your space stay fresh and healthy.
We also install and program smart thermostats and building automation controls that give you real-time visibility into system performance and energy usage. Whether you’re managing a multi-unit complex or a small retail space, these upgrades help you reduce overhead while maintaining peak comfort.
For over two decades, Mainstream has been the name Spokane trusts for quality work and honest service. We bring that same dedication to every commercial HVAC project—large or small. Our team is fully licensed, insured, and trained to meet the specific demands of commercial systems, and we approach every job with the same promise: to treat your business like it’s our own.
From emergency repairs and seasonal tune-ups to energy-efficient upgrades and complex new builds, Mainstream delivers solutions that are practical, professional, and always neighborly.
If your commercial HVAC system needs attention—or if you’re ready to explore upgrades that make sense for your business—Mainstream is here to help. We’ll assess your space, answer your questions, and recommend the most cost-effective, energy-smart path forward.
Whether you’re dealing with airflow issues, outdated equipment, or inconsistent temperatures, Mainstream brings the expertise and heart you want in a service partner. Schedule your commercial HVAC consultation today and experience why Spokane businesses have trusted us since 2000.
