Key Findings: Home Appliance Retailer Comparison
In the comparison of home appliance retailers (S4R-S6R, 75 responses), K’s Denki secured the top position with 184 ranking points among the 63 responses where specific store names could be extracted. This was followed by Bic Camera with 174 points, Yodobashi Camera with 166 points, Yamada Denki with 147 points, and Edion with 125 points.
However, Yodobashi Camera received the most first-place recommendations with 22 instances, followed by K’s Denki with 18, Yamada Denki with 7, and Bic Camera and Edion with 5 each.
The ranking points were calculated by assigning 5 points for a 1st place recommendation, 4 points for 2nd, 3 points for 3rd, 2 points for 4th, and 1 point for 5th. The top three companies (K’s Denki 184 points, Bic Camera 174 points, Yodobashi Camera 166 points) were in close competition, indicating that rankings could shift slightly depending on the metric used.
Background of the Survey
Dishwashers, while easily comparable in price online, require crucial installation condition checks for actual purchase. Countertop models often face issues with placement, diverter valves, water supply/drainage, and rental property conditions. Built-in models involve construction, estimates, and replacement of existing equipment.
As generative AI becomes an entry point for purchase consultations, home appliance retailers need to articulate their strengths—such as installation consultations, construction, warranties, and in-store consultations—in a way that AI can understand, beyond just price and product selection. This survey collected AI responses to dishwasher purchase consultations under identical conditions to assess recommended purchasing destinations and the status of advice on confirmation items.
Survey Overview
-
Survey Body: Stellagent Inc.
-
Survey Target: AI recommendations for dishwasher purchase destinations.
-
Target AIs: ChatGPT, Gemini, Claude, Perplexity, Microsoft Copilot.
-
Date: August 4, 2026.
-
Number of Responses: 5 AIs × 6 scenarios × 5 times each = 150 responses.
-
Methodology: An AI response experiment where fixed prompts were input into the web UI of major generative AIs. Purchasing destinations, recommendation rankings, reasons for recommendation, and mentions of confirmation items appearing in the responses were aggregated.
General Consultation Trends
In general consultations (S1-S3, 75 responses, of which 73 had specific purchase destinations extracted), home appliance stores were mentioned in 114 recommendation lines, EC malls in 101, official manufacturer sites in 45, and price comparison sites in 29. AI responses for dishwasher purchase consultations tended to list home appliance stores alongside comparison targets such as Amazon, Rakuten Ichiba, Kakaku.com, and official manufacturer sites.
Mention of Confirmation Items
Among the 63 responses where specific home appliance store names were extracted, mentions of in-store consultation were 63 responses (100.0%), construction/installation and warranty were each 62 responses (98.4%), and diverter valves were 61 responses (96.8%). However, it should be noted that construction, warranty, and diverter valves were explicitly mentioned in the S5R and S6R prompts, influencing these high mention rates.
Conversely, mentions of rental conditions were only 33 responses (52.4%), water supply/drainage 30 responses (47.6%), and capacity/family size 9 responses (14.3%).
Implications and Future Outlook
Dishwashers are treated by AI not merely as “price-driven purchases” but as products where the purchase destination is chosen considering installation, construction, diverter valves, and warranties. Home appliance stores appeared in AI responses alongside EC malls and price comparison sites, with clear guidance on in-store consultation, installation consultation, construction, and warranties serving as reasons for recommendation.
However, confirmation items related to living environments, such as rental conditions, water supply/drainage, capacity/family size, and disposal/collection, were often missing from AI responses. For home appliance retailers to be chosen via AI-driven purchase consultations, it is crucial to organize conditions that should be confirmed before purchasing a dishwasher (on product pages, FAQs, in-store consultation guides, installation pages) in a format easily readable by AI.
This survey’s ranking is based on the aggregated recommendation order and frequency within AI responses and does not evaluate the actual prices, inventory, installation quality, warranty content, or customer satisfaction of each retailer. Generative AI responses can vary due to changes in date, model, plan, web search settings, account status, UI, and external information updates. Therefore, the results are interpreted strictly within the scope of responses obtained on August 4, 2026.
Detailed Report
For the full report, please visit:
About Stellagent Inc.
Stellagent Inc. develops an agentic commerce platform that supports purchasing and reservation experiences in the era of AI agents.
-
Company Name: Stellagent Inc.
-
Representative: Akihiro Suzuki, Representative Director
-
Location: WeWork Ocean Gate Minatomirai 8F, 3-7-1 Minatomirai, Nishi-ku, Yokohama, Kanagawa
-
Established: February 22, 2022
-
Website: https://stellagent.ai/ja
Contact for Inquiries
For inquiries regarding this matter, please contact via the following form:
