Althoff Industries, Inc.

Althoff Industries has served Greater Chicago since 1961, making it one of the older family-owned HVAC operations in the region. Based in Hillside with a main office in Crystal Lake, the contractor holds Illinois Plumbing License #055-001101 and operates under the Althoff Home Services brand. With a 2.7-star average across seven published reviews, the company draws a mixed reputation from local homeowners, some praising longtime technicians and responsive service, while others cite communication lapses and pricing disputes. The business offers 24/7 emergency calls and serves both residential and commercial clients across the western suburbs.

What distinguishes Althoff from neighboring contractors is its breadth beyond traditional heating and cooling. The company advertises itself as a Trane Comfort Specialist and maintains designations as an Amana dealer, while also handling indoor air quality solutions including filtration, Purification, and humidity control systems. Their website explicitly lists geothermal and ductless mini-split installations among residential capabilities, a narrower specialty among regional HVAC shops. Additional offerings include electrical panel upgrades, rewiring, and plumbing services, positioning the contractor as a multi-trade operation rather than an HVAC-only specialist.

Customer experiences reveal sharp contrasts in service quality. Reviewer Sherwin Abrams described working with customer service representative Katrina to arrange a lighting upgrade, noting technicians Teo and Tom completed thejob within a day and left the kitchen cleaner than they found it. Conversely, reviewer David Chen recounted paying $175 for a diagnosis, then receiving a nearly $1000 quote, comparing unfavorably to a $150 quote from another contractor. One recurring theme in negative reviews involves billing communication: Sam LeBlanc described receiving threats of a lien on their rental property over an invoice that showed $0.00 owed, despite having already paid within five minutes of contact.