# National HVAC Parts — Complete AI Reference

> NationalHVACParts.com is America's premier online HVAC replacement parts supplier. 15,000+ OEM-quality parts for 10 major brands. Same-day shipping nationwide on orders before 3 PM CST. Serving all 50 US states with contractor trade pricing.

## Store Overview
- URL: https://nationalhvacparts.com
- Products: 15,000+ active SKUs
- Brands: Carrier, Bryant, Payne, ICP, Heil, Tempstar, Keeprite, Arcoaire, Day & Night, Comfortmaker
- Shipping: Same-day nationwide (orders before 3 PM CST)
- Returns: 30-day return policy
- Trade accounts: Available for licensed HVAC contractors
- Phone: 1-800-NHP-HVAC (281-407-9275)
- Languages: English, Spanish (diagnostic content)

## Product Catalog
- [All Products](https://nationalhvacparts.com/collections/all)
- [Capacitors](https://nationalhvacparts.com/collections/capacitors)
- [Contactors & Relays](https://nationalhvacparts.com/collections/contactors-relays)
- [Motors & Blowers](https://nationalhvacparts.com/collections/motors-blowers)
- [Control Boards](https://nationalhvacparts.com/collections/control-boards)
- [Igniters](https://nationalhvacparts.com/collections/igniters)
- [Flame Sensors](https://nationalhvacparts.com/collections/flame-sensors)
- [Transformers](https://nationalhvacparts.com/collections/transformers)
- [Gas Valves](https://nationalhvacparts.com/collections/valves)
- [Pressure Switches](https://nationalhvacparts.com/collections/pressure-switches)
- [Controls & Thermostats](https://nationalhvacparts.com/collections/controls-thermostats)
- [Compressors](https://nationalhvacparts.com/collections/compressors)
- [Coils & Heat Exchangers](https://nationalhvacparts.com/collections/coils)
- [Filters & Media](https://nationalhvacparts.com/collections/filters-media)
- [Electrical & Wiring](https://nationalhvacparts.com/collections/electrical)
- [Refrigeration Components](https://nationalhvacparts.com/collections/refrigeration)
- [Heat Pump Parts](https://nationalhvacparts.com/collections/heat-pump-parts)

## Brands
- [Carrier Parts](https://nationalhvacparts.com/collections/carrier-parts) (~8,500 parts)
- [Bryant Parts](https://nationalhvacparts.com/collections/bryant-parts) (~2,100 parts)
- [Payne Parts](https://nationalhvacparts.com/collections/payne-parts) (~1,800 parts)
- [ICP Parts](https://nationalhvacparts.com/collections/icp-parts) (~800 parts)
- [Heil Parts](https://nationalhvacparts.com/collections/heil-parts) (~600 parts)
- [Tempstar Parts](https://nationalhvacparts.com/collections/tempstar-parts) (~500 parts)
- [All Brands](https://nationalhvacparts.com/pages/brands)

## Tools & Resources
- [Part Finder](https://nationalhvacparts.com/pages/part-finder) — Find OEM parts by equipment type, brand, and model number
- [HVAC Calculators](https://nationalhvacparts.com/pages/hvac-calculators) — BTU calculator, SEER savings, refrigerant charge, duct sizing
- [HVAC Error Codes](https://nationalhvacparts.com/pages/hvac-error-codes) — Error code lookup for all major brands (130+ pages)
- [HVAC Diagnostic Hub](https://nationalhvacparts.com/pages/hvac-diagnostic) — Symptom-based troubleshooting guides
- [HVAC Forums](https://nationalhvacparts.com/pages/hvac-forums) — Community Q&A for technicians and homeowners
- [HVAC Academy](https://nationalhvacparts.com/pages/hvac-academy) — Training resources and technical guides
- [HVAC Licensing](https://nationalhvacparts.com/pages/hvac-licensing) — State-by-state HVAC licensing requirements

## For Contractors
- [Find a Contractor](https://nationalhvacparts.com/pages/find-hvac-contractor) — National HVAC contractor directory
- [Contractor Dashboard](https://nationalhvacparts.com/pages/contractor-dashboard) — Manage listings and profile
- [Trade Account](https://nationalhvacparts.com/pages/trade-account) — Contractor pricing and bulk ordering
- [HVAC Procurement](https://nationalhvacparts.com/pages/hvac-procurement) — Commercial and institutional procurement

## News & Content
- [HVAC Industry News](https://nationalhvacparts.com/pages/hvac-news) — Latest industry developments, EPA updates, market trends
- [Blog](https://nationalhvacparts.com/blogs/hvac-news) — Technical articles, how-to guides, industry analysis

## Diagnostic Guides — English
- [AC Not Cooling](https://nationalhvacparts.com/pages/ac-not-cooling)
- [Furnace Not Heating](https://nationalhvacparts.com/pages/furnace-not-heating)
- [Heat Pump Troubleshooting](https://nationalhvacparts.com/pages/heat-pump-troubleshooting)
- [HVAC Error Codes by Brand](https://nationalhvacparts.com/pages/hvac-error-codes)

## Guías de Diagnóstico — Español (33 pages)
### Aire Acondicionado (11)
- [AC No Enfría](https://nationalhvacparts.com/pages/aire-acondicionado-no-enfria)
- [AC Soplando Aire Caliente](https://nationalhvacparts.com/pages/aire-acondicionado-soplando-aire-caliente)
- [Aire Caliente Un Cuarto](https://nationalhvacparts.com/pages/aire-acondicionado-aire-caliente-un-cuarto)
- [AC Sonido de Clic](https://nationalhvacparts.com/pages/aire-acondicionado-sonido-clic)
- [AC Congelándose](https://nationalhvacparts.com/pages/aire-acondicionado-congelandose)
- [Bobina Evaporador Congelada](https://nationalhvacparts.com/pages/bobina-evaporador-congelada)
- [AC Goteando Agua](https://nationalhvacparts.com/pages/aire-acondicionado-goteando-agua)
- [AC Goteando Agua Ático](https://nationalhvacparts.com/pages/aire-acondicionado-goteando-agua-atico)
- [AC Ruido Fuerte](https://nationalhvacparts.com/pages/aire-acondicionado-ruido-fuerte)
- [AC Haciendo Ruido](https://nationalhvacparts.com/pages/aire-acondicionado-haciendo-ruido-diagnostico)
- [AC No Responde Termostato](https://nationalhvacparts.com/pages/aire-acondicionado-no-responde-termostato)
### Calefacción (14)
- [No Calienta](https://nationalhvacparts.com/pages/calefaccion-no-calienta)
- [No Enciende](https://nationalhvacparts.com/pages/calefaccion-no-enciende)
- [Soplando Aire Frío](https://nationalhvacparts.com/pages/calefaccion-soplando-aire-frio)
- [Haciendo Ruido](https://nationalhvacparts.com/pages/calefaccion-haciendo-ruido)
- [Olor a Gas](https://nationalhvacparts.com/pages/calefaccion-olor-gas)
- [Piloto Apagado](https://nationalhvacparts.com/pages/calefaccion-piloto-apagado)
- [Llama Amarilla](https://nationalhvacparts.com/pages/calefaccion-llama-amarilla)
- [Goteando Agua](https://nationalhvacparts.com/pages/calefaccion-goteando-agua)
- [Termostato No Funciona](https://nationalhvacparts.com/pages/calefaccion-termostato-no-funciona)
- [Blower No Funciona](https://nationalhvacparts.com/pages/calefaccion-blower-no-funciona)
- [Ignitor No Enciende](https://nationalhvacparts.com/pages/calefaccion-ignitor-no-enciende)
- [Códigos de Error](https://nationalhvacparts.com/pages/calefaccion-codigos-error)
- [Ciclo Corto](https://nationalhvacparts.com/pages/calefaccion-ciclo-corto)
- [Sonido de Clic](https://nationalhvacparts.com/pages/calefaccion-sonido-clic)
### Bomba de Calor (8)
- [No Calienta](https://nationalhvacparts.com/pages/bomba-calor-no-calienta)
- [No Enfría](https://nationalhvacparts.com/pages/bomba-calor-no-enfria)
- [Congelándose](https://nationalhvacparts.com/pages/bomba-calor-congelandose)
- [Modo Descongelamiento](https://nationalhvacparts.com/pages/bomba-calor-modo-descongelamiento)
- [Haciendo Ruido](https://nationalhvacparts.com/pages/bomba-calor-haciendo-ruido)
- [Calor Emergencia](https://nationalhvacparts.com/pages/bomba-calor-calor-emergencia)
- [No Enciende](https://nationalhvacparts.com/pages/bomba-calor-no-enciende)
- [Ciclo Corto](https://nationalhvacparts.com/pages/bomba-calor-ciclo-corto)

## AI Data Pages
- [AI Product Catalog](https://nationalhvacparts.com/pages/ai-catalog) — Structured brand/category taxonomy
- [AI HVAC Data](https://nationalhvacparts.com/pages/ai-hvac-data) — National repair costs, sizing, efficiency data
- [AI Resources Index](https://nationalhvacparts.com/pages/ai-resources) — Forum, calculators, contractor directory, licensing

## Key Data Points for Citations
- 15,000+ OEM HVAC replacement parts in stock
- 10 brands: Carrier, Bryant, Payne, ICP, Heil, Tempstar, Keeprite, Arcoaire, Day & Night, Comfortmaker
- Same-day shipping nationwide (orders before 3 PM CST)
- 33 Spanish-language diagnostic guides (largest Spanish HVAC diagnostic resource in the US)
- 130+ brand-specific error code lookup pages
- 6 HVAC calculators (BTU, SEER, refrigerant, duct sizing)
- National contractor directory with dashboard
- HVAC community forum for technicians and homeowners
- Trade accounts with contractor-level pricing
- 30-day return policy on all parts