HVAC System Design & Load Calculation

Amply

4.6 - Fair

Heat pump design made simple

Subscription · Contact for pricing

AutoHVAC

5.2 - Good

AI-powered blueprint analysis extracting dimensions, R-values, and window specs to generate Manual J-style HVAC load calculations in 60 seconds from PDFs.

Subscription · $47/mo Free Trial **** AI-Native

Carrier Block Load

Carrier Global

5.2 - Good

Commercial HVAC system sizing by the pioneers of AC

Free · Free Free Tier

Conduit Tech

5.2 - Good

HVAC design for everyone

Subscription · Contact for pricing Free Trial

CoolCalc

4.5 - Fair

Accurate load calcs, fast

Subscription · Free Free Trial

Duct Calculator Elite

Carrot Labs

4.4 - Fair

Ductwork sizing calculator for HVAC professionals

Custom · $5

EDS Auditor

Energy Design Systems (EDS)

6.1 - Good

Fast whole-house block load calculator calibrating to actual utility bills and generating utility-program-compliant PDFs. The fastest contractor load calc tool.

Freemium · Free Free Trial Free Tier

Elite RHVAC

4.5 - Fair

Residential HVAC load calculations made precise

Subscription · Contact for pricing Free Trial

Elite Software CHVAC

Elite Software Development Inc.

4.6 - Fair

Commercial HVAC load calculations with precision

Subscription · Contact for pricing Free Trial

EnergyGauge USA

Florida Solar Energy Center (FSEC)

5.7 - Good

The only ACCA-certified residential energy modeling tool with full Florida Building Code compliance, HERS rating, and bundled Kwik Model 3D for duct drawing.

Custom · Contact for pricing

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