- 21st Century
- 3 Embers
- A&E Cage
- A.W. Perkins
- ACHLA Designs
- Acme Miami
- ACS
- Adams Mfg
- AEI Corporation
- AJ MANUFACTURING LLC
- Alfa Products
- Alfresco
- AlgaeShield
- Alita
- Alpine
- Alps
- Amantii
- Amaze Heaters
- Ambient
- American Chimney Shroud
- American Chimney Supplies
- American Fireglass
- American Fyre Designs
- American Gas Log
- American Outdoor Grills