Doesn't train AI models on your data
"We anonymously mine the data to gather trends in equipment selection"
by Carmel Software Corporation
Last updated Mar 29, 2026 · 1 revision
ACCA-approved Manual J 8th Edition mobile app with instant load calculations, room-by-room analysis, and equipment locator for HVAC contractors.

HVAC ResLoad-J is an ACCA-approved iPad app performing peak cooling and heating load calculations per Manual J8 for residential and light commercial buildings. Features weather data for thousands of cities, hundreds of construction types, instant total load results as fields update, and unlimited projects with both block and room-by-room load capabilities.
How this product is delivered and what's included out of the box.
Independent industry credentials this product holds.
Independently approved by the Air Conditioning Contractors of America to perform Manual J load calculations and/or Manual D duct sizing in accordance with ACCA's published standards. ACCA approval is the industry's reference standard for HVAC design software.
Each statement below was extracted directly from the vendor's privacy policy or terms of service. Click "source" to read it in context.
"We anonymously mine the data to gather trends in equipment selection"
"We do NOT share the data with third-parties"
"In certain cases, you may also have the right to receive data in a structured, commonly used and machine-readable format and have the right to transmit those data to another controller."
"Under certain circumstances, you may be entitled to request that we erase the personal data"
Primary policy document: https://www.carmelsoft.com/Carmel-Software-Privacy-Policy
“Carmelsoft HVAC ResLoad-J is an iOS-exclusive ... ACCA-approved Manual J8 ... [co-listed with Wrightsoft]”
“[ResLoad-J] is an ACCA-approved Manual J8 HVAC residential load calc application ... [reviewed alongside Wrightsoft RMC as iPad apps]”
“For smaller businesses or individual contractors ... Cool Calc or Carmelsoft HVAC ResLoad-J might be excellent choices.”