ILLCO Inc.

ILLCO Inc. operates as a plumbing and HVAC supply hub in Joliet, Illinois, maintaining a 4.9-star average across 19 verified customer reviews. Established to serve both trade professionals and knowledgeable homeowners, the company provides specialty fittings, components, and equipment that other area suppliers frequently cannot locate. Located at 1601 Irene Road in nearby Lockport, ILLCO serves the greater Will County region including Wilmington, Mokena, and Manhattan townships, earning repeat business from area contractors who value having a reliable supplier within driving distance.

What distinguishes ILLCO from standard supply outlets is the depth of product knowledge residing among their counter staff. Reviewers consistently highlight that employees assist with troubleshooting beyond simple part identification, one customer noted staff provided "great advice on what was best for my application" while another praised their ability to guide through complex refrigeration fitting challenges. The inventory spans plumbing and refrigeration categories simultaneously, allowing single-source purchasing for multi-system projects. Most reviewers hold 5-star opinions, with a small number awarding 4 stars, reflecting the minor inventory gaps that occasionally occur during peak demand periods.

Named technicians appearing across reviews include Doug Price, who handles refrigeration component sourcing, and Clay Hamm, noted for preferred HVAC/R supply assistance. Trey Durden received commendation for "always going that extra" to assist contractors facing time-sensitive jobs. Barry Rigoni simply stated ILLCO has "always taken care of" his needs, a sentiment echoed by Don Cooper who called staff "very knowledgeable about products." Neptune Pools described the team as "friendly, helpful and professional" across multiple interactions.