Carter-Hoffmann food warmers are available online through restaurant supply stores such as KaTom Restaurant Supply and Food Service Warehouse as of March 2015. Internet auction sites feature food warmers for sale by both private sellers and small businesses. Additionally, the Carter-Hoffmann website has a search function for locating nearby retailers.
The KaTom Restaurant Supply website allows users to browse through several types of food warmers made by Carter-Hoffmann. Each listing contains a picture of the model's exterior as well as the interior shelving area, the unit's model number and a description of its features and specifications. Each listing also contains reviews written by customers who have purchased or had experience with the unit. Reviews consist of a star rating, ranging from one to five, as well as a written account of the customer's interactions.
The eBay website allows users to create an online storefront to can sell a variety of goods, with both pictures and written descriptions similar to those found on retail websites. As the site contains many different sellers, users are able to review each seller after completing a transaction. The seller rating system allows potential buyers to identify which sellers are trustworthy and which may lead to scams or fraud.