---
title: HVAC ASHRAE Duct Fitting Database (DFDB) Reviews
meta_title: 'HVAC ASHRAE Duct Fitting Database (DFDB) Reviews 2026: Details, Pricing,
  & Features | G2'
meta_description: Filter reviews by the users' company size, role or industry to find
  out how HVAC ASHRAE Duct Fitting Database (DFDB) works for a business like yours.
date_modified: '2026-02-15'
parent_category:
  name: Construction
  url: https://www.g2.com/categories/construction
---

# HVAC ASHRAE Duct Fitting Database (DFDB) Reviews
**Vendor:** Carmel Software  
**Category:** [HVAC Software](https://www.g2.com/categories/hvac)
## About HVAC ASHRAE Duct Fitting Database (DFDB)
HVAC ASHRAE Duct Fitting Database (DFDB) app is designed to allow users to perform pressure loss calculations for all 240+ ASHRAE fittings listed in the 2017 ASHRAE Handbook of Fundamentals.






- [View HVAC ASHRAE Duct Fitting Database (DFDB) pricing details and edition comparison](https://www.g2.com/products/hvac-ashrae-duct-fitting-database-dfdb/reviews?section=pricing&secure%5Bexpires_at%5D=2026-07-14+16%3A42%3A36+-0500&secure%5Bsession_id%5D=5774f94f-4c07-4f13-b769-bdfdb09a76e3&secure%5Btoken%5D=db57f6d00d52df8745331498986fa3a2c3fb2dd34442463b2957856841bb4db9&format=llm_user)


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