Johnstone Supply

Johnstone Supply operates as a heating equipment supplier on Chicago's South Side, serving contractors and homeowners from a storefront at 4759 S Cottage Grove Ave in the Grand Crossing neighborhood. With 82 verified customer reviews yielding a 4.0-star average rating, the company has built a twelve-year track record supplying furnaces, heat pumps, and installation accessories to the greater Cook County region. The storefront maintains weekday hours from 7 AM to 4:30 PM and Saturday hours from 8 AM to noon, allowing same-day will-call pickups for trade professionals managing active installation schedules.

What distinguishes Johnstone Supply from general-purpose hardware outlets is its contractor-only product model, stocking manufacturer direct lines that residential customers typically cannot access without a trade account. The warehouse carries commercial single-packaged units alongside split systems, mini-split configurations with multi-zone capabilities, and variable-capacity residential unitary equipment from major OEMs. For homeowners pursuing energy-efficiency rebates, the location offers extended warranty processing and maintains field-installed accessory inventory compatible with both gas and oil furnace configurations.

Recent customer reviews reference specific staff members by name, illustrating the service experience. One reviewer describes losing a credit card on-site and receiving an immediate callback from Jose, who located the card and initiated the return. Another customer highlights Luis for setting up a new account with thorough product guidance and respectful communication. Daniel V is cited for transforming a routine parts run into what the reviewer calls the best shopping experience among multiple Johnstone locations.