ACI Northwest has served Spokane Valley homes and businesses for decades, bringing the same crews and standards we’re known for across the Inland Northwest just across the state line. From the established neighborhoods south of Sprague to the newer subdivisions spreading toward the Idaho border, we handle heating, cooling, and whole-home comfort for the full range of Valley homes.
We cover it all: heating, air conditioning, indoor air quality, water heaters, electrical, generators, and commercial systems. We handle installation, replacement, repair, and maintenance.
Why Spokane Valley Homeowners Choose ACI Northwest
Serving the region since 1992 and rated 4.8 stars across 500+ Google reviews. Our NATE-certified, factory-trained technicians are a Lennox Premier Dealer, Mitsubishi Electric Diamond Contractor, and dealer for Daikin and Trane, so systems are sized and installed to deliver their rated efficiency. One team for the whole home, honest repair-or-replace advice, and a 100% satisfaction guarantee.
Our Services
Our Services in Spokane Valley

Heating. Valley winters bring sustained cold and snow, and much of the area’s housing dates to the post-war decades, which means a lot of aging furnaces are due for replacement. We handle heating repair, installation, and replacement, plus furnaces, heat pumps, air handlers, and ductless systems. Older Valley homes often run boiler and hydronic heat (radiators, baseboard, or radiant floor), and we service, repair, and replace those systems too, whether you’re keeping an older boiler efficient or upgrading. Ask about high-efficiency furnace and heat pump options.



Air Conditioning. Summers turn hot and dry, regularly into the 90s. We install, replace, repair, and maintain central air and heat pump systems, and ductless is a great retrofit for older Valley homes that never had central AC. Plan ahead rather than wait for a heat-wave breakdown.


Indoor Air Quality. Late-summer wildfire smoke is a recurring Inland Northwest reality. We install whole-home filtration, purifiers, humidifiers, and energy recovery ventilators to keep indoor air clean when the outdoor air isn’t.

Electrical & Generators. Panel upgrades and wiring, and whole-home standby generators to keep your home safe and powered through winter storms.

Built for Spokane Valley
Spokane Valley is a sprawling suburban city that grew up out of orchard country and post-war subdivisions, and its housing reflects that layered history: established mid-century neighborhoods south of Sprague, decades of subdivisions built in between, newer modern homes toward the state line, and semi-rural large-lot pockets in areas like Greenacres and Veradale. That range means very different HVAC needs street to street, from aging systems in older homes that are ready for efficient replacements to new or updated homes where high-efficiency and zoned systems make sense. The Inland Northwest climate ties it together: cold, snowy winters, hot dry summers, and a smoke season that makes indoor air quality worth planning for.
Spokane Valley & Surrounding Service Areas
We serve communities across Eastern Washington and North Idaho, including Spokane, Post Falls, Coeur d’Alene, and Hayden.
Spokane Valley HVAC FAQs
Do you offer emergency HVAC service in Spokane Valley?
Yes. When your heat or AC fails, call us and we’ll get a technician out as quickly as possible.
My older Valley home doesn’t have central AC. What are my options?
Ductless mini-splits are an excellent retrofit for homes without existing ductwork, delivering efficient cooling (and heating) without a major remodel.
My home has an old boiler. Can you service it?
Yes. We service, repair, and replace boiler and hydronic heat systems common in older Valley homes.
How often should I service my system?
A heating tune-up in the fall and a cooling tune-up in the spring is the cheapest way to avoid a breakdown.












