# Manufacturer Response Log for Who Makes HVAC Brands

Status: pre-publication register created July 11, 2026. No manufacturer outreach or response is recorded for version 2.3.2. Every row below is a planned verification request, not evidence that contact occurred.

An empty row, no response, or refusal to comment does not prove or disprove an ownership, manufacturing, warranty, or equipment relationship. Any future entry must preserve the original question, response, date, respondent role, and supporting document.

| Priority | Claim ID and unresolved question | Company to contact | Planned channel | Status | Owner | Deadline | Follow-ups | Response summary | Editorial disposition |
|---|---|---|---|---|---|---|---:|---|---|
| High | MODEL-TA-001: Are Trane 5TTV8X and American Standard 5A7V8X official counterparts, and which assemblies differ? | Trane Technologies | Technical/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | Publisher inference remains labeled |
| High | MODEL-TA-002: Does any official pairwise map exist for the additional Trane/American Standard families in UL SA11679? | Trane Technologies | Technical/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | Co-listed only |
| High | MODEL-RA15AY: Confirm relationship between same-code Rheem and Ruud RA15AY36AJ1NA records | Rheem Manufacturing | Technical/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | Strong common-family assessment remains labeled |
| High | MODEL-CD: Define the shared and different content of Concord and Ducane 97G2E/97G2V | Allied Air | Technical/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | Company-stated platform only |
| High | YORK-LICENSE: Confirm current controller, trademark licensee, and legal warrantor by York-lineage brand | Bosch Home Comfort and Johnson Controls | Corporate/legal communications | Not contacted | Unassigned | Not scheduled | 0 | None | Roles remain separated and unresolved |
| High | GENERAL-TRANSITION: Confirm current U.S. product branding, legal warrantor, factories, and any Rheem/Ruud platform sharing | GENERAL Inc. and Paloma Rheem | Corporate/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | No Rheem-platform inference |
| High | AIRTEMP-2026: Identify current legal warrantor and physical manufacturer by current central family | R.E. Michel / Michel-Airtemp | Legal/product support | Not contacted | Unassigned | Not scheduled | 0 | None | Historical warranty roles only |
| High | ACIQ-ROLES: Identify trademark owner, legal warrantor, and physical manufacturer by central model family | ACiQ | Legal/warranty support | Not contacted | Unassigned | Not scheduled | 0 | None | Brand-facing administrator only |
| High | MRCOOL-ROLES: Identify legal warrantor and physical manufacturer by central model family | MRCOOL | Legal/warranty support | Not contacted | Unassigned | Not scheduled | 0 | None | Brand-facing administrator only |
| Medium | MARS-BRANDS: Confirm controller, mark holder, and any current Comfort-Aire/Century model map | MARS | Corporate/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | No equivalence claimed |
| Medium | THERMAL-ZONE: Identify legal entity, warrantor, and OEM by current central model | Thermal Zone | Legal/warranty support | Not contacted | Unassigned | Not scheduled | 0 | None | Unverified |
| Medium | ECOER: Identify current U.S. legal warrantor and model-level manufacturing entity | Ecoer | Product/warranty support | Not contacted | Unassigned | Not scheduled | 0 | None | Self-description limited to cited scope |
| Medium | BLUERIDGE: Identify mark owner and manufacturer by current central model | Alpine Home Air / Blue Summit LLC | Legal/product support | Not contacted | Unassigned | Not scheduled | 0 | None | Warrantor does not prove manufacturer |
| Medium | NAPOLEON: Identify physical manufacturer and legal warrantor for U.S. central families | Napoleon / Wolf Steel | Product/warranty support | Not contacted | Unassigned | Not scheduled | 0 | None | Current product scope only |
| Medium | GE-HVAC: Identify physical manufacturer and legal warrantor by ducted product family | GE Appliances | Product/warranty support | Not contacted | Unassigned | Not scheduled | 0 | None | Haier ownership does not prove factory |
| Medium | MITSUBISHI-DUCTED: Identify manufacturer and warrantor for current whole-home ducted families | Mitsubishi Electric Trane HVAC US | Product/warranty support | Not contacted | Unassigned | Not scheduled | 0 | None | No Trane sister-platform inference |
| Medium | LG-UNITARY: Confirm current U.S. unitary model list, manufacturer, and warrantor | LG Electronics USA | Product/warranty support | Not contacted | Unassigned | Not scheduled | 0 | None | Product scope only |
| Medium | SAMSUNG-HYLEX: Identify physical manufacturer, warrantor, and any third-party equipment dependencies | Samsung HVAC | Product/warranty support | Not contacted | Unassigned | Not scheduled | 0 | None | No conventional sister relationship |
| Medium | TOSOT-GREE: Request exact cross-reference, if any, between TOSOT NOVA/UNIX and GREE-badged models | TOSOT Comfort / GREE | Product relations | Not contacted | Unassigned | Not scheduled | 0 | None | GREE manufacturer statement only |
| Medium | EVCON: Identify exact current York-family model maps, if any, and the legal warrantor | Bosch Home Comfort / Evcon | Product/warranty support | Not contacted | Unassigned | Not scheduled | 0 | None | No sister model inferred |
| Medium | ICP-HIST: Identify any current 2026 cross-brand product designation replacing the historical 2012 architecture record | Carrier / ICP | Technical/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | Historical evidence only |
| Medium | DAIKIN-RECALL: Supply any current exact Goodman/Amana/Daikin model cross-reference beyond the recalled population | Daikin Comfort Technologies | Technical/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | Recall is not a model map |
| Medium | GRANDAIRE: Identify current mark controller and exact ICP sister models for warranty-covered products | GrandAire / ICP | Legal/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | Manufacturer/warrantor scope only |
| Medium | DURASTAR: Identify mark controller and exact Rheem/Ruud sister models for warranty-covered products | Durastar / Rheem Sales Company | Legal/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | Covered manufacturer scope only |
| High | HIST-TA-LINE: Identify the residential model families, dates, factory lines, and BOM scopes for any Trane/American Standard same-line production | Trane Technologies | Manufacturing/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | Oasis account is a named but unverified third-party lead |
| High | HIST-TA-BOM: Confirm whether any exact historical or current family differed only by badge, paint, or cabinet trim, including exceptions | Trane Technologies | Engineering/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | Universal color-only/BOM claim remains not established |
| High | COMP-COPELAND-SHARE: State calendar-2025 share of U.S. residential ducted-unitary outdoor units using Copeland-manufactured compressors, with denominator and methodology | Copeland | Corporate/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | Leading supported; greater-than-50-percent share not established |
| Medium | COMP-OEM-SUPPLIERS: Identify approved compressor and blower-motor suppliers by current residential family, capacity, and production date | Major listed HVAC OEMs | Engineering/service relations | Not contacted | Unassigned | Not scheduled | 0 | None | Supplier may vary by capacity or serial range |
| Medium | COMP-A2L-SENSORS: Identify sensor and mitigation-board suppliers for each current residential R-32/R-454B indoor family | Major listed HVAC OEMs | Engineering/service relations | Not contacted | Unassigned | Not scheduled | 0 | None | Named residential supplier application not established |
| Medium | COMP-COILS-HEAT-EXCHANGERS: State whether completed coils and heat exchangers are made internally or sourced by model and plant | Major listed HVAC OEMs | Manufacturing/product relations | Not contacted | Unassigned | Not scheduled | 0 | None | No outsourced-assembly claim published |
| Medium | COMP-WARRANTY-SUBSTITUTES: Clarify when OEM-authorized or universal motors, controls, TXVs, and electrical parts may be used without affecting coverage | Major listed HVAC OEMs | Warranty/service relations | Not contacted | Unassigned | Not scheduled | 0 | None | Service availability does not prove original factory fit |

## Outreach requirements

1. Send the exact published or proposed claim, not a broad request for marketing information.
2. Ask the company to identify separately the owner/controller, trademark holder or licensee, physical manufacturer, warrantor, and any exact sister-model cross-reference.
3. Request a dated primary document with complete model, capacity, suffix, and revision scope.
4. Record corrections even when they weaken or remove a previously favorable relationship.
5. Never treat silence as confirmation.