Of 25 pump and HVAC cross-reference sites, only six sell access — and five of the six paid products are HVAC
Asked:
“Which websites currently publish industrial pump or HVAC replacement-part cross-reference or compatibility data, and which of them sell access or subscriptions? List up to 25, with what each covers and any publicly listed pricing.”
The shortlist covers 25 currently reachable websites and resources — 12 focused on HVAC and 13 on industrial pumps — classified by access model as of 19 October 2026. Six sell access: five subscriptions (Bluon, BoilerFix AI, ModelMatch, PartsArena Pro, iBasis Parts Search) and one $18 one-time archival ARO parts PDF from 1964. Prices shown are for access to the reference data, not ordinary replacement-part prices.
Who sells access, who gives it away
Each square is one website. Rows group by access model; columns split HVAC from industrial pump. Hover or tap a square for coverage and pricing.
paid subscription — sells accesspaid one-time document — sells accessfree account or trade login, no stated feeaccess terms unclear (not assumed free)free / public
Only ModelMatch sells in US dollars by public tier — $19, $39 and $79 per month for its Shopify fitment app; the other priced subscriptions are UK products billed in pounds. modelmatchapp.co
Bluon is the only subscription with no public figure at all: its 35M-model, 260-brand HVAC database is sold as a custom-priced business subscription. bluon.com
The single paid item on the pump side is not a database: it is a 27-page 1964 ARO service-parts price sheet still sold as an $18 PDF download. service-manuals-pro.com
Nine of the 13 pump resources are free and public — from Parker's competitor interchange to Ampco's 4,616-entry seal cross-reference — while five sites across both sectors have unclear access terms that should not be read as free. ampcopumps.com
All 25 websites compared
Website
Sector
Access
Access pricing (public)
Coverage & cross-reference data
Source
Method: shortlist of 25 currently reachable websites and resources publishing industrial-pump or HVAC replacement-part cross-reference or compatibility data, compiled 19 October 2026; one row per site, each with its own source URL across independent hosts. Pricing shown is publicly listed access/subscription pricing for the reference data itself, not prices of replacement parts; null pricing is shown as “no public access price found”. Coverage text is condensed for space; “unclear” access terms are preserved and not assumed free.