stars 1 stars 2 stars 3

Althoff Industries was founded in 1961 by James Althoff to service residential heating and air-conditioning customers in the growing Northwest Chicago suburbs. These communities also had a growing need for skilled tradesmen to provide plumbing, piping and electrical services, and we soon expanded our offerings to meet them. As our reputation for the highest quality service grew, small businesses and light commercial clients joined our customer base. Over time, our dedication to total customer satisfaction has continued to fuel our growth, leading us to form long term relationships with some of the largest institutions and manufacturing companies in the area. In the 1990’s, we added our Building Automation Group to design and install computerized HVAC control systems. By remaining current with innovative technologies, we continue to provide outstanding value to our customers.

Website http://www.althoffind.com
Revenue $21.5 million
Funding $2 million
Employees 83 (57 on RocketReach)
Founded 1961
Address 8001 South Route 31, Crystal Lake, Illinois 60014, US
Fax (815) 455-8354
Technologies
Industry Construction, Commercial & Residential Construction, Consulting, HVAC, Energy, Electrical, Hardware, Plumbing, Real Estate, Energy Saving Services, Renewable Energy, Sustainability
Web Rank 3 Million
Keywords Hvac, Heating, Residential, Air Conditioning, Plumbing, Installation, Contracting, Piping, Repair, Mechanical, Maintenance, Tradesmen, Systems, Skilled Labor, Construction, Building, Comfort, Efficiency, Sustainability
Competitors BASF, 3M, Avery Dennison, Berry Global México, Sonoco, ITW, Platinum Equity, Shurtape Industrial, Rexam PLC, Griffin Holding Co +38 more (view full list)
SIC SIC Code 171 Companies, SIC Code 17 Companies
NAICS NAICS Code 238220 Companies, NAICS Code 2382 Companies, NAICS Code 238 Companies, NAICS Code 23822 Companies, NAICS Code 23 Companies

Althoff Industries Questions

The Althoff Industries annual revenue was $21.5 million in 2026.

Tod Althoff is the President of Althoff Industries.

57 people are employed at Althoff Industries.

Althoff Industries is based in Crystal Lake, Illinois.

The NAICS codes for Althoff Industries are [238220, 2382, 238, 23822, 23].

The SIC codes for Althoff Industries are [171, 17].

Top Althoff Industries Employees

View Similar People
G2 Leader Summer 2026 G2 Best Est ROI Mid-Market Summer 2026 G2 Easiest Admin Mid-Market Summer 2026 G2 Most Implementable Summer 2026 G2 Best Results Mid-Market Summer 2026 G2 Lead Capture Mid-Market Summer 2026 Inc Fastest Growing Private Companies 2026 Inc Best Workplace 2026
g2crowd
G2Crowd Trusted
chromestore
300K+ Plugin Users