Source map · HVAC Filter Delivery · September 2026
The Websites AI Cites When Recommending HVAC Filter Delivery
Every URL the engines cited or consulted while answering this category’s prompts, counted. Where an engine discloses only the links in its answer, as the ChatGPT app does, those links are what is counted. This is the list a vendor has to appear on to be named.
109 citations across 25 runs. By type: vendor site 74 · other 14 · listicle 5.
Top domains
| # | Domain | Type | Citations | Engines | Supports |
|---|---|---|---|---|---|
| 1 | secondnature.com | vendor site | 32 | ChatGPT | Second Nature |
| 2 | pm.filtertime.com | vendor site | 22 | ChatGPT | FilterTime |
| 3 | filtertime.com | vendor site | 9 | ChatGPT | FilterTime |
| 4 | filterbuy.com | vendor site | 6 | ChatGPT | Filterbuy |
| 5 | thisoldhouse.com | listicle | 3 | ChatGPT | – |
| 6 | airestor.com | other | 2 | ChatGPT | – |
| 7 | airfiltersdelivered.com | other | 2 | ChatGPT | – |
| 8 | appfolio.com | other | 2 | ChatGPT | Second Nature |
| 9 | joinbeagle.com | vendor site | 2 | ChatGPT | Beagle |
| 10 | latchel.com | vendor site | 2 | ChatGPT | DOOR, Latchel |
| 11 | rentvine.com | listicle | 2 | ChatGPT | FilterTime |
| 12 | aerofilter.com | other | 1 | ChatGPT | – |
| 13 | apex-ms.com | other | 1 | ChatGPT | – |
| 14 | caliperair.com | other | 1 | ChatGPT | – |
| 15 | credhub.com | vendor site | 1 | ChatGPT | CredHub |
| 16 | developer.buildium.com | other | 1 | ChatGPT | – |
| 17 | discountfilters.com | other | 1 | ChatGPT | – |
| 18 | ferguson.com | other | 1 | ChatGPT | – |
| 19 | filter-smart.us.com | other | 1 | ChatGPT | – |
| 20 | filterful.com | other | 1 | ChatGPT | – |
Top URLs
What to do with this
The AI Visibility Sprint is defined against this list: entry into five of the top ten cited sources in the category, plus the owned pages engines extract from. Start with the filter delivery programs ranking, read the methodology for how citations are captured, and compare with the other source maps: RBPs, access control, maintenance software, utility management, parking management, EV charging, community engagement apps, HOA management software, facilities management, affordable housing compliance software, package management, resident experience platforms, pest control programs, renters insurance programs, tenant screening, AI leasing assistants, rent payment platforms, deposit alternatives and smart home platforms.
Part of the AI Shortlist Index. Method: how sources are recorded.
Founder, WebPossible
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