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I will do hvac duct design, ductwork sizing, airflow calculation and manual d design
HVAC Design Engineer
HVAC and Mechanical Design Engineer specializing in Manual J load calculations, heat loss and heat gain analysis, equipment sizing, duct design, and HVAC system design. I support residential and comme...
About this Gig
Need HVAC duct design, ductwork sizing, airflow calculation, or Manual D design for your home or building?
I provide properly sized supply and return ductwork based on your HVAC loads and project requirements.
A properly sized HVAC system can still perform poorly when the ductwork is incorrectly designed. Undersized ducts can create excessive pressure and noise, while oversized or poorly balanced ducts can result in weak airflow and uneven temperatures.
I can design and calculate:
- HVAC ductwork sizing
- Manual D duct design
- Supply duct sizing
- Return duct sizing
- Main trunk and branch duct sizing
- Room by room CFM calculation
- Airflow distribution
- Supply and return air requirements
- HVAC duct layout recommendations
- Residential and light commercial duct systems
- Professional calculation documentation
I use your available HVAC load information, floor plans, equipment data, building dimensions, room requirements, and system configuration to determine appropriate airflow and duct sizes.
Please message me before ordering for large commercial buildings, permit specific mechanical drawings, or projects requiring jurisdiction specific design requirements.
Project scale:
Building
Building type:
Residential
•
Commercial
•
Office & workspace
Delivery style preference
Please inform the freelancer of any preferences or concerns regarding the use of AI tools in the completion and/or delivery of your order.
FAQ
What is included in your HVAC duct design service?
Depending on the package, I can provide duct sizing, supply and return duct calculations, room by room CFM requirements, main trunk and branch sizing, Manual D based duct design, airflow distribution, and professional documentation.
Do you provide Manual D duct design?
Yes. Manual D based residential duct design is included in the Standard and Premium packages. I use available airflow and project information to determine appropriate duct sizes and distribution requirements.
Do I need a Manual J load calculation before ordering?
A Manual J load calculation is strongly recommended because the required airflow for each room is normally based on the heating and cooling loads. If you already have a Manual J report, upload it with your project information.
Can you calculate room by room CFM?
Yes. Room by room CFM calculations are included in the Standard and Premium packages when sufficient load information is provided.
Can you design ducts for an existing HVAC system?
Yes. If you provide the existing equipment information, available airflow, floor plans, and existing duct details, I can review the system requirements and provide the applicable duct sizing/design scope.
Do you provide permit-ready HVAC drawings?
The core gig focuses on duct design, sizing, airflow calculations, and documentation. Permit ready mechanical drawings may require additional scope. Contact me before ordering if your project requires drawings for a specific jurisdiction.
Can you handle commercial HVAC duct design?
I can handle light commercial projects within the package limits. Larger commercial systems, multiple air-handling units, complex zoning, or high-rise projects should be discussed before ordering.
