I will do hvac load calculation, manual j and duct design
HVAC
About this Gig
Need HVAC design, Manual J load calculation, duct design, or HVAC drawings for a building permit? Get accurate, professional HVAC design documentation tailored to your residential project, contractor requirements, and applicable project specifications.
Whether you need a Manual J calculation urgently, an HVAC load calculation for a permit, a revised mechanical drawing, or help correcting an HVAC duct layout, I provide organized technical solutions designed to keep your project moving.
MY HVAC SERVICES INCLUDE:
- Manual J heating and cooling load calculations
- HVAC system design and equipment sizing
- Duct design, duct sizing, and airflow layouts
- Residential HVAC floor plans and mechanical drawings
- HVAC permit drawing preparation and revisions
- Heating and cooling load analysis
WHY WORK WITH ME?
Clear, well-organized technical deliverables
Project-specific calculations and drawings
Attention to detail and applicable design requirements
Responsive communication and dependable delivery
Editable files and PDF outputs, as agreed
Ready to get started?
Send your architectural plans and project details. For urgent deadlines or complex permit requirements
Project scale:
Building
Building type:
Residential
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Commercial
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Industrial
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
Can you provide HVAC drawings and calculations for a building permit?
Yes. I can prepare agreed HVAC calculations and mechanical drawings based on your project plans and applicable requirements. Please share your jurisdiction and permit checklist first. Approval and professional seals are not guaranteed.
Can you revise HVAC drawings rejected by a permit reviewer?
Yes. Send the reviewer comments, existing drawings, and relevant project documents. I can review the requested changes and confirm the scope before starting.
What information do you need for a Manual J load calculation?
I generally need architectural floor plans, building location, dimensions, insulation details, window information, orientation, and relevant construction specifications. If information is missing, I will identify what is required.
Can you handle urgent HVAC calculations and design revisions?
Urgent projects may be possible depending on their complexity and my current workload. Contact me with your deadline and files before ordering so I can confirm a realistic delivery schedule.

