Even with an exclusive release, users report minor quirks. Here is how to fix them:
Issue: "Component 'MSCOMCTL.OCX' is missing."
Fix: This is a common Visual Basic runtime error. Download the 64-bit compatible OCX file and register it via regsvr32 mscomctl.ocx in an elevated command prompt.
Issue: Calculated CFM seems off (English vs. Metric confusion). Fix: Go to Settings > Units. Ensure you are in IP (Imperial) for inches/CFM or SI for metric. Version 64 saves this setting across sessions.
Issue: Cannot print to PDF. Fix: The exclusive version may rely on legacy printing. Install a free PDF printer like "CutePDF Writer" as a workaround.
Despite the move to cloud computing, the demand for the downloadable "Duct Sizer" remains high for three reasons:
If you want, I can:
McQuay Duct Sizer Version 6.4 is a highly regarded, lightweight HVAC design tool used by engineers to calculate duct dimensions and friction loss. Originally developed by McQuay, it is now maintained by Daikin Applied and is available as a free download for both desktop and mobile platforms. Key Features of Version 6.4
Version 6.4 remains a staple for MEP (Mechanical, Electrical, and Plumbing) designers due to its portability and ease of use.
Dual Sizing Methods: Supports both the Equal Friction Method (using flow rate and friction loss) and the Equal Velocity Method (using flow rate and air velocity).
Multi-Duct Support: Calculates sizes for round, rectangular, and oval duct types.
Export Capabilities: Users can export calculation results directly to Excel for professional documentation and further analysis.
Unit Flexibility: Operates in both English (IP) and Metric (SI) units, allowing for global project compatibility.
Portability: The desktop version is a "portable" tool, meaning it typically does not require a complex installation process and can be run from a USB drive. How to Use the Tool
The software interface is designed for quick inputs to yield immediate results:
Input Airflow: Enter the required airflow in CFM (Cubic Feet per Minute) or L/s.
Define Parameters: Specify either the desired air velocity or the head loss (friction loss) per 100 feet.
Select Duct Shape: Choose between circular or rectangular ducts.
View Results: The tool automatically calculates the equivalent diameter for round ducts or allows you to input one dimension (like width) to find the corresponding height for rectangular ducts. Where to Download design tools duct sizer version 64 free download exclusive
You can find the software and supporting resources through the following channels:
Daikin Applied: The official source for Daikin Design Tools, which includes the Duct Sizer and other HVAC analyzers.
Mobile Versions: An Android version is available on the Google Play Store for on-site calculations.
Community Resources: Platforms like MEPwork and Augmintech offer direct download links for the PC version along with tutorial PDFs. Ductsize - HVAC Duct Sizing and Analysis - Elite Software
There is no official product specifically named " Design Tools Duct Sizer Version 64
" currently released by major HVAC software manufacturers. The industry standard tool often referred to in similar contexts is the McQuay Duct Sizer (now part of Daikin Applied
), which is a popular free utility, or commercial software like Elite Software's Ductsize 6.0
Search results for "Version 64" free downloads frequently point toward unofficial or third-party hosting sites, which may present security risks. Below is a detailed review of the most reputable legitimate alternatives currently available for free. 1. McQuay (Daikin Applied) Duct Sizer
This is the most widely used "free" tool for quick duct sizing calculations. Developer: Originally McQuay International, now maintained by Daikin Applied
HVAC engineers and technicians needing a digital version of a manual "ductulator." Key Features: Dual Sizing Methods: Supports both Equal Friction Equal Velocity Unit Flexibility: Easily toggles between I-P (Imperial) SI (Metric) Automatic Calculation:
Input two parameters (e.g., CFM and Velocity) to instantly find the equivalent diameter, friction loss, and rectangular dimensions. Detailed Fluid Data:
Includes air properties like density and viscosity based on user-defined temperature and pressure. Review Verdict:
It is lightweight and highly accurate for single-run calculations but lacks the ability to map an entire complex duct network in one file. 2. Elite Software - Ductsize (Evaluation Version)
While the full version is paid, Elite Software offers a free evaluation of Ductsize 6.0
, which is likely what "Version 64" searches are attempting to find (referring to 64-bit compatibility). Elite Software
Professional designers requiring comprehensive system analysis. Key Features: Complex Systems:
Allows for sizing an unlimited number of supply and return duct systems in one project. Sizing Methods: Even with an exclusive release, users report minor quirks
Supports Static Regain, Equal Friction, and Constant Velocity. Reporting:
Generates detailed bill of materials and noise analysis reports. Review Verdict:
Powerful and robust, but has a steeper learning curve than the simple McQuay utility. Elite Software
3. Mobile App Alternatives (Duct Sizer Pro / HVAC Duct Sizer) Ductwork Sizing Tool - Sizing Ductwork
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Have you successfully installed the exclusive 64-bit version? Share your experience in the comments below. For more HVAC software tutorials, subscribe to our newsletter.
), a legacy but highly regarded HVAC calculation utility. While "Version 64" is not an official versioning number for the standalone tool (the latest major updates are often associated with the ASHRAE Duct Fitting Database v6.0
), the software remains a staple for engineers needing quick, accurate ductwork sizing. Software Overview
The tool serves as a digital "ductulator," replacing traditional slide-rule charts with a digital interface for sizing circular and rectangular ductwork. It is primarily known for its efficiency in calculating air properties based on temperature and pressure. Key Features Dual Calculation Methods : Supports both the Equal Friction Equal Velocity Unit Versatility : Offers full support for both I-P (Imperial) SI (Metric) Comprehensive Data Outputs
: Calculates flow area, fluid velocity, Reynolds number, friction factor, and velocity pressure. Shape Options
: Sizes for circular, rectangular, and sometimes oval ducts. : Results can typically be exported to for documentation and reporting. Carmel Software User Experience and Performance Ductwork Sizing Tool - Sizing Ductwork McQuay Duct Sizer Version 6
Design Tools Duct Sizer Version 6.4: The Definitive Guide For HVAC engineers, MEP consultants, and design professionals, precision in duct sizing is the difference between a high-performing system and a noisy, inefficient one. Among the landscape of digital tools, McQuay Duct Sizer Version 6.4 remains a staple, offering a lightweight yet powerful solution for calculating duct dimensions and friction losses. What is McQuay Duct Sizer Version 6.4?
Originally developed by McQuay International (now part of Daikin Applied), this software is a digital evolution of the classic manual "ductulator". It is a portable Windows-based application designed to perform quick calculations for airflow, velocity, and pressure drop in both circular and rectangular ductwork. Key Features and Capabilities Ductwork Sizing Tool - Sizing Ductwork
hello hello this is Roberto. and this is the HVAC. channel today we're going to be talking about duck sizer tool all right so let' YouTube·HVAC Easy Math HVAC Duct Sizer Mobile App for iOS - Carmel Software
While there is no official "version 64" for most industry-standard duct sizers, several highly regarded, free tools are widely used by HVAC professionals for precision design and calculation. Top Official Free Duct Sizing Tools
McQuay (Daikin Applied) Duct Sizer: This is the industry-standard free tool. Originally developed by McQuay and now maintained by Daikin Applied, it allows for rapid calculation of circular and rectangular duct dimensions.
Duct Sizer Pro: A Free Online Velocity Calculator and "Ductulator" tool that streamlines complex friction loss and diameter calculations without a software installation.
Duct Sizer Lite: A mobile-first application available on the Google Play Store that uses the Darcy-Weisbach equation to calculate pressure loss on the go. Key Features of Professional Duct Sizers
When selecting a tool, look for these standard professional capabilities:
Sizing Methods: Capability to use Equal Friction, Static Regain, or Constant Velocity methods.
Unit Support: Seamless switching between IP (Imperial) and SI (Metric) units.
Duct Materials: Ability to adjust for surface roughness across various materials like galvanized sheet metal or flexible duct.
Calculated Outputs: Instant results for equivalent diameter, flow area, fluid velocity, Reynolds number, and friction factor. Safety & Compatibility Note Ductwork Sizing Tool - Sizing Ductwork
hello hello this is Roberto. and this is the HVAC. channel today we're going to be talking about duck sizer tool all right so let' YouTube·HVAC Easy Math Duct Sizing Step By Step With McQuay Duct Sizer
Originally developed by Elite Software, Design Tools Duct Sizer is a standalone utility that performs rapid duct sizing calculations based on ASHRAE fundamentals. Unlike bulky CAD plugins, this lightweight tool focuses on one thing: converting airflow (CFM) into the correct duct dimensions (round or rectangular) based on friction rate or velocity.
Before diving into the capabilities of the software, it is crucial to address the specific version number in your request.
There is no official "Version 64" of Design Tools Duct Sizer.
The software suite known as McQuay Tools (now Daikin Tools) or the standalone shareware simply called "Duct Sizer" generally topped out at version numbers in the single digits (e.g., v4.0, v5.1, v6.0) or moved to entirely new branding (Daikin Tools v10+).
If you are seeing a "Version 64" on a download site, it is highly likely one of three things:
With that safety warning established, here is the detailed review of the actual Duct Sizer software that this tool likely refers to (specifically the classic Design Tools/Destiny5 interface).