About AmmoniaCrews

What this is

AmmoniaCrews is a directory of industrial refrigeration contractors that work on ammonia, CO2, industrial Freon/HFC and glycol/brine systems. These are the critical systems that keep food, medicine and supply chains moving. It is built for plant managers, maintenance and engineering teams, and owners of cold storage, food processing and pharmaceutical facilities who need to find qualified contractors quickly.

It is not a kitchen-equipment or residential HVAC directory.

How listings are built

Each listing is researched from the contractor's own website. Pages show the systems, facilities and services the cited pages document, the sources used, and the date the listing was last checked. See the Methodology for the full rules.

We don't publish ratings, reviews, rankings or "best/top/verified" badges. Contractors are listed alphabetically. A listing means the contractor met our inclusion rules from its published information; it is not an endorsement or a certification.

Commercial relationships (disclosure)

AmmoniaCrews currently has no paid placements, sponsorships or affiliate relationships, and listings are not paid. If that changes, it will be disclosed on this page and on any affected listing.

Who runs it

Ammonia Crews is a trade name of Heritage Relay LLC, an Ohio limited liability company. AmmoniaCrews is not affiliated with RETA or IIAR.

Questions or corrections: Contact · support@heritagerelay.com