I will do manual j d and s load calculations with duct design
Gig Summary
Residential HVAC Designer
Level 2
Has met high performance criteria and has a proven track record for meeting client expectations.
Highly Responsive
Known for exceptionally quick replies
What people loved about this freelancer
dave_1794

United States
Bobby delivered a thorough, professional Manual J/S/D package for a complex high-performance home with radiant slab heating, a separate heat pump air system...
dustin_crandall

United States
Bobby’s work was very professional, he delivered ahead of time. The five star reviews that he’s gotten from everybody else are definitely true. Don’t think twice about using this guy he does what he says.
saltygill

United States
Bobby did an amazing job—he is the real deal! He was 100% professional and completed everything correctly the first time, with no revisions needed. If your...
torrds

United States
Bobby was great to work with. He turned the HVAC design around very quickly and still took the time to walk me through the details and explain the reasoning...
darrinmcclary

United States
Bobby did an excellent, thorough job for me. I plan to use him again on another house in a couple months. I got all the information I needed for unit selection,...
About this Gig
I provide ACCA-compliant residential Manual J load calculations, Manual S equipment selection, and Manual D duct design reports for permit approval, accepted in all 50 U.S. states. All calculations are completed using ACCA-approved Wrightsoft software to ensure accurate, energy-efficient, and code-compliant HVAC system design.
Price Quote
In order to send you a price quote, please send me your floor plans, the square footage of the house, and how many systems we're doing.
What's Included
Manual J - Heating & Cooling Load Calculations
Manual S - Equipment Selection
Manual D - Duct Design & Sizing
Permit-ready PDF reports accepted in all 50 U.S. States
Room-by-room Load & Airflow Calculations
Ongoing project support, even after delivery
Why Choose Me
13,000+ completed HVAC design projects
15+ years HVAC system design experience
20+ years as a Master HVAC (NJ)
Fast, accurate, code-compliant designs for permits
Trusted by homeowners, HVAC contractors, builders, and architects nationwide
Additional Services
Manual JS, Radiant design, ERV/HRV, Rescheck, Florida 405, and Material takeoff.
Extras
24-Hour Express Delivery Available
Project scale:
House
Building type:
Residential
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's Included in This Gig?
Includes ACCA-compliant Manual J (load calculations), Manual S (equipment selection), and Manual D (duct design). Optional extras (not included): 24-hour delivery, additional systems, mini-splits, REScheck, ERV/HRV design, Florida R405, Radiant Floor Heating Design, and Material Takeoff.
What information is needed to start?
To get started, I need your floor plans showing all interior wall, window, and exterior door dimensions (WxH). After ordering, you'll receive a Requirements Form covering equipment preferences, construction details, and other project-specific information.
What would be the cost if my project doesnt fit any of your packages
If your project doesn't fit one of my packages, please contact me for a custom quote. Send the home's floor plans. square footage and the number of HVAC systems, and I'll review the project and provide a personalized price quote.
What if you require any state specific forms such as Florida R405 and Title24?
If your jurisdiction requires a Florida R405 report, you can add it as an extra when ordering a Manual J, S & D package. At the current time, Im not offering Title24 or other state-specific forms.
What software do you use?
I use Wrightsoft Right-Suite®, the industry's leading ACCA-approved software for Manual J, Manual S, and Manual D calculations. It is widely regarded as the most accurate and comprehensive HVAC design program available.
Can this be used to get a permit?
Yes. The ACCA-compliant Manual J, S, and D reports are suitable for permit submittals and are accepted by jurisdictions throughout all 50 U.S. states. These calculations are required by many building departments for HVAC permit approval.
Are you familiar with the most up to date mechanical codes?
Yes. As a New Jersey Master HVAC License Holder, I complete ongoing code-update training to maintain my license. With 13,000+ HVAC design projects completed nationwide, I stay current with modern mechanical code requirements and permit standards.
What is considered a Revision? (Revisions Policy)
Revisions are available for adjustments to the original project scope. They do not include redesigning the project due to major floor plan changes, complete reworks after a change of mind, requests that conflict with code or industry best practices, or changes that effectively create a new project.
537 reviews for this Gig
| (518) | ||
| (18) | ||
| (1) | ||
| (0) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
D dave_1794

United States
Bobby delivered a thorough, professional Manual J/S/D package for a complex high-performance home with radiant slab heating, a separate heat pump air system and a heated garage, with sensible zoning, room-by-room loads and duct drawings. He used the correct ACCA design conditions and an accurate envelope...
$200-$400
Price
9 days
Duration
Helpful?D dustin_crandall

United States
Bobby’s work was very professional, he delivered ahead of time. The five star reviews that he’s gotten from everybody else are definitely true. Don’t think twice about using this guy he does what he says.
$200-$400
Price
9 days
Duration
Helpful?S saltygill

United States
Ongoing collaborationBobby did an amazing job—he is the real deal! He was 100% professional and completed everything correctly the first time, with no revisions needed. If your project is in the United States, I highly recommend hiring Bobby. His knowledge of U.S. codes and requirements made all the difference.
$200-$400
Price
3 days
Duration
Helpful?T 
torrds

United States
Ongoing collaborationBobby was great to work with. He turned the HVAC design around very quickly and still took the time to walk me through the details and explain the reasoning behind the calculations. I had several follow-up questions, and his explanations were thorough, clear, and helpful. I really appreciated the extra...
$600-$800
Price
8 days
Duration
Helpful?D darrinmcclary

United States
Bobby did an excellent, thorough job for me. I plan to use him again on another house in a couple months. I got all the information I needed for unit selection, duct sizing, and grill placement. Superb work. Thank you.
$200-$400
Price
6 days
Duration
Helpful?
537 reviews for this Gig
| (518) | ||
| (18) | ||
| (1) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
D dave_1794

United States
Bobby delivered a thorough, professional Manual J/S/D package for a complex high-performance home with radiant slab heating, a separate heat pump air system and a heated garage, with sensible zoning, room-by-room loads and duct drawings. He used the correct ACCA design conditions and an accurate envelope...
$200-$400
Price
9 days
Duration
Helpful?D dustin_crandall

United States
Bobby’s work was very professional, he delivered ahead of time. The five star reviews that he’s gotten from everybody else are definitely true. Don’t think twice about using this guy he does what he says.
$200-$400
Price
9 days
Duration
Helpful?S saltygill

United States
Ongoing collaborationBobby did an amazing job—he is the real deal! He was 100% professional and completed everything correctly the first time, with no revisions needed. If your project is in the United States, I highly recommend hiring Bobby. His knowledge of U.S. codes and requirements made all the difference.
$200-$400
Price
3 days
Duration
Helpful?T 
torrds

United States
Ongoing collaborationBobby was great to work with. He turned the HVAC design around very quickly and still took the time to walk me through the details and explain the reasoning behind the calculations. I had several follow-up questions, and his explanations were thorough, clear, and helpful. I really appreciated the extra...
$600-$800
Price
8 days
Duration
Helpful?D darrinmcclary

United States
Bobby did an excellent, thorough job for me. I plan to use him again on another house in a couple months. I got all the information I needed for unit selection, duct sizing, and grill placement. Superb work. Thank you.
$200-$400
Price
6 days
Duration
Helpful?

