Like its larger sibling, the Ducane Affinity 4100 (*Est. $530), the Affinity 3100 is made by the Weber-Stephens Products Company. The Affinity 3100 is also available in a natural gas version.
Although it's made from less expensive materials than Weber grills, reviewers say the Affinity 3100's internal components are well built and durable. It ranks in the middle of the pack in one expert test of several dozen similar grills, and gets a good, although not terribly enthusiastic, review from another expert. We couldn't find many user reviews of the Ducane Affinity 3100, but those we did find stated that the grill went together easily. "I can't remember ever assembling a grill this easily," one reviewer writes.
The Ducane Affinity 3100 has three stainless-steel burners with a total output of 36,000 BTU, and a total cooking area of 550 square inches, including the warming rack. Good Housekeeping recommends the Affinity 3100 as one of four gas grills for under $500. If you don't mind paying a couple hundred dollars more for a longer warranty and better-quality materials, the Weber Spirit E-310 (*Est. $500) is about the same size as the Affinity 3100, and receives great reviews for both durability and value.
Three of our top sources, ConsumerReports.org, About.com and GoodHousekeeping.com, all evaluate of the Ducane Affinity 3100. We found very few user reviews for a current version of the Ducane Affinity 3100; AceHardware.com was the best source.
The Ducane Affinity 3100 is among the gas grills included in the latest ratings chart at ConsumerReports.org. The Affinity 3100 is classified as a "medium-size" grill, and ranked for factors including convenience and cooking performance at various temperatures.
Review: Gas Grills, Editors of ConsumerReports.org, April 2012
Riches has been About.com's barbecues and grilling guide for over 10 years. His review of the Ducane Affinity 3100 describes it as "the cheapest grill you can get made by Weber. This means a good design, with great support, and pretty good longevity for a moderate price." The review notes that the Affinity 3100 has few features but is a good, inexpensive basic grill.
Review: Ducane Affinity 3100 Black Gas Grill, Derrick Riches
3. Good Housekeeping
This article focuses on four gas grills that cost less than $500, all of which have been tested by Good Housekeeping's Research Institute. The Ducane Affinity 3100 is one of the four. Reviewers say it "offers good cooking performance and solid construction but few extras."
Review: Great Grills (Under $500!), Editors of Good Housekeeping
About 10 users review the Ducane Affinity 3100 LP gas grill, giving it an average rating of 4.6 stars. They say that it has good craftsmanship and assembles easily, and most of the reviewers feel this grill is durable. "I can't remember ever assembling a grill this easily," writes one.
Review: Ducane Affinity 3100 LP Gas Grill, Contributors to AceHardware.com