ACI Northwest has served the region since 1992, bringing the same crews and standards we’re known for across the Inland Northwest to Liberty Lake. One of the area’s newest and fastest-growing communities, Liberty Lake blends master-planned neighborhoods with higher-end homes near the lake, most of it built recently and to modern standards. That shapes the work here: less about coaxing life out of old equipment, more about keeping efficient systems running at their best and sizing new ones right.
We cover the whole home: heating, air conditioning, indoor air quality, water heaters, electrical, and generators.
HVAC for a Newer, Planned Community
Most Liberty Lake homes run modern, high-efficiency equipment, and getting the rated performance out of it depends on proper maintenance and correct sizing. We service and maintain builder-installed systems, handle heating repair, installation, and replacement including furnaces and heat pumps, and set up smart thermostats and zoning so larger floor plans stay comfortable in every room. If you’re building or adding on, we size and install complete new systems, and ductless mini-splits are a clean solution for bonus rooms, offices, and additions. Many of the higher-end and lake homes here feature radiant floor heat, and we service, repair, and replace boiler and hydronic systems as well.
Our Services
Built for Liberty Lake
The Inland Northwest climate still sets the terms: cold, snowy winters, hot dry summers that make a well-sized air conditioner or heat pump worth having, and a late-summer wildfire smoke season when whole-home filtration earns its keep. We also keep water heaters running reliably with tank and tankless service, and handle the electrical work that often comes with a system upgrade.

One Local Team for the Whole Home
- Heating: furnaces, heat pumps, boilers, radiant, ductless, air handlers
- Air conditioning: central air and heat pumps, ductless mini-splits
- Indoor air quality: filtration, purifiers, humidifiers, ERVs
- Water heaters: tank and tankless, install and service
- Electrical & generators: panels and wiring, whole-home standby power
Rated 4.8 stars across 500+ reviews, NATE-certified, and backed by a 100% satisfaction guarantee, with premier dealer relationships including Lennox, Mitsubishi Electric, Daikin, and Trane.

Liberty Lake & Surrounding Service Areas
We serve Liberty Lake and communities across Eastern Washington and North Idaho, including Greenacres, Spokane Valley, Post Falls, and Coeur d’Alene.
Liberty Lake HVAC FAQs
My home is only a few years old. Do I still need HVAC service?
Yes. Modern high-efficiency systems deliver their rated performance only when they’re maintained, and regular service also protects manufacturer warranties.
Can you set up smart thermostats and zoning?
Yes. Smart thermostats and zoning keep larger, open floor plans comfortable room to room and can lower your energy use.
We’re building or adding on. Can you handle it?
Yes. We size and install complete new-construction systems, and ductless is ideal for additions and bonus rooms.
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 in demanding weather.










