Have a Reznor unit heater, duct furnace, or commercial heating system? ACI Northwest has the experience to keep it running reliably. We’ve been servicing heating equipment across Coeur d’Alene and the Inland Northwest since 1992, and our technicians are experienced with Reznor’s line of gas-fired and electric unit heaters commonly found in garages, workshops, warehouses, and commercial and industrial spaces.
Whether you need a routine inspection, a repair, or a professional assessment of your unit’s condition, our local team is ready to help.
About Reznor
Reznor has been a trusted name in commercial and industrial heating since 1888, with a product line built around gas-fired and electric unit heaters, duct furnaces, and specialty heating solutions. Unlike residential central heating systems, Reznor equipment is purpose-built for large, open spaces — garages, warehouses, workshops, and industrial facilities — where conventional ducted furnaces aren’t practical. Reznor heaters are known for durable construction, straightforward serviceability, and the ability to deliver reliable heat output across a wide range of capacities.
Our Current Promotions
Reznor Equipment We Service
ACI Northwest provides service and maintenance on Reznor heating equipment, including:
- Gas-fired unit heaters
- Electric unit heaters
- Duct furnaces
- Commercial and industrial space heating systems
- Thermostats and heating controls

What We Can Do for Your Reznor System
Preventive Maintenance
Routine maintenance keeps Reznor unit heaters operating safely and efficiently — particularly important for gas-fired equipment, where proper combustion, venting, and safety control checks matter most. Our technicians inspect burners, heat exchangers, fan motors, and controls to catch issues before they become bigger problems or safety concerns.
Diagnosis & Repair
If your Reznor unit isn’t heating effectively, is cycling improperly, or is showing signs of wear, our technicians can diagnose the issue and get it resolved. We’re familiar with the common failure points in gas-fired and electric unit heaters and work efficiently to get your space back to a comfortable working temperature.
System Evaluation
Not sure whether your Reznor unit is still performing efficiently or if it’s reaching the end of its service life? We’ll give you a straightforward assessment of your equipment’s condition, along with honest guidance on repair versus replacement.
Why Choose ACI Northwest to Service Your Reznor Equipment
ACI Northwest has been serving homes and businesses in the Coeur d’Alene area for over 30 years, with experience extending beyond residential systems into the commercial and industrial heating equipment that keeps garages, shops, and warehouses operating through North Idaho winters.
When you call ACI, you’re getting a knowledgeable local team — not a call center. We show up on time, communicate clearly about what we find, and stand behind our work.
Serving Coeur d’Alene, North Idaho & Eastern Washington
Our service area covers Kootenai County and communities throughout North Idaho and Eastern Washington, including Spokane. Whether you’re heating a home garage, a commercial workshop, or a warehouse, ACI Northwest is ready to service your Reznor equipment.










