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$
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Bobby is unavailable until Sep 22, 2026
“I’m currently on vacation and will be back to assist you on Monday. I look forward to working with you soon!”
I will do manual j d and s load calculations with duct design
Gig Summary
Residential HVAC Designer
I’m a Master HVACR license holder with over 20 years of experience in the US HVAC industry and 15 years as an HVAC system designer with thousands of projects under my belt. While many engineers know h...
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
hadleybenoit
United States
Did a great job preparing Manual JDS, delivered report on time and as promised. Great communication throughout the whole process. exercised an exceptional level...
chris_yanniello
United States
Bobby is a true professional, I would highly recommend him to anybody looking for manual J/D/S reports for HVAC design. We will definitely work together again in the near future.
dirk_v_a
United States
Really enjoyed working with Bobby. He responded quickly; the project was completed ahed of the deadline. He was patient with some of the questions I had....
mboston44
United States
Bobby is always fast to respond and has a fast turnaround time. I believe this is the 4th time I have used him, and I have another one coming again in a few days. repeat customer!
stevehoward511
United States
Bobby was AMAZING to work with. He understood the challenges of "HVAC professionals" not using Manual J calculations for system sizing. He reviewed my equipment...
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.
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
Additional Systems: $50 each
Mini-Split Heads: $15 each
For homes over 5,000 sq. ft., please contact me for a custom quote.
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.
Reviews
506 reviews for this Gig
| (488) | ||
| (17) | ||
| (1) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T toddh1978
United States
Bobby did a fantastic job and I would highly recommend him. He's very professional, very smart and delivered the job before the deadline. Probably not a better HVAC designer out there.
$400-$600
Price
3 days
Duration
Helpful?P pjest2010
United States
Ongoing collaborationBobby Always Goes Above and Beyond . I Am A Real Estate Residential Developer And Bobby Is My Go To Guy For All My Manual JDS’s . I Submit These Documents To The Municipality For Building Permits And NEVER Had Any Issues Or Even Questions From The Sub code Officials Regarding Bobby’s Report . I Will...
$400-$600
Price
4 days
Duration
Helpful?D drnicolevale
United States
I worked with Bobby not knowing anything about the requirements. He was exceptionally knowledgeable and informed. This became especially clear after to speaking with other people that were less knowledgeable. His report was detailed, clear and his communication was excellent. He promised a 3 day turnaround...
$200-$400
Price
2 days
Duration
Helpful?K kurt_pearson
United States
Bobby provided a quality product in a reasonable timeframe, for a reasonable cost. He also took time to make sure the information he provided was clear and understandable for someone who is not in the HVAC industry. I would work with him again.
$200-$400
Price
3 days
Duration
Helpful?G 
grace_vest
United States
Ongoing collaborationWe worked with Bobby for an initial HVAC design and ResCheck as well as for a redesign when we went back to the drawing boards with our house plans, and both times he was communicative and professional, completing the work quickly and with a high level of detail.
$400-$600
Price
6 days
Duration
Helpful?
Reviews
506 reviews for this Gig
| (488) | ||
| (17) | ||
| (1) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T toddh1978
United States
Bobby did a fantastic job and I would highly recommend him. He's very professional, very smart and delivered the job before the deadline. Probably not a better HVAC designer out there.
$400-$600
Price
3 days
Duration
Helpful?P pjest2010
United States
Ongoing collaborationBobby Always Goes Above and Beyond . I Am A Real Estate Residential Developer And Bobby Is My Go To Guy For All My Manual JDS’s . I Submit These Documents To The Municipality For Building Permits And NEVER Had Any Issues Or Even Questions From The Sub code Officials Regarding Bobby’s Report . I Will...
$400-$600
Price
4 days
Duration
Helpful?D drnicolevale
United States
I worked with Bobby not knowing anything about the requirements. He was exceptionally knowledgeable and informed. This became especially clear after to speaking with other people that were less knowledgeable. His report was detailed, clear and his communication was excellent. He promised a 3 day turnaround...
$200-$400
Price
2 days
Duration
Helpful?K kurt_pearson
United States
Bobby provided a quality product in a reasonable timeframe, for a reasonable cost. He also took time to make sure the information he provided was clear and understandable for someone who is not in the HVAC industry. I would work with him again.
$200-$400
Price
3 days
Duration
Helpful?G grace_vest
United States
Ongoing collaborationWe worked with Bobby for an initial HVAC design and ResCheck as well as for a redesign when we went back to the drawing boards with our house plans, and both times he was communicative and professional, completing the work quickly and with a high level of detail.
$400-$600
Price
6 days
Duration
Helpful?
