Bobby is unavailable until Jul 5, 2026

Hey, I'm on vacation. Looking forward to working with you when I'm back!

You can still contact the seller.

I will do manual j d and s load calculations with duct design

5.0
5.0

United States

I speak English

1,400 orders completed

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

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.

Reviews

467 reviews for this Gig
5.0

(451)
(15)
(1)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    4.9
Sort By
Most relevant
  • P
    image-docs

    pjest2010

    Repeat Client

    US

    United States

    5

    Bobby 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?
    Yes
    No
  • T
    image-docs

    torrds

    US

    United States

    5

    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 behind the calculations. I had several follow-up questions, and his explanations were thorough, clear, and helpful. I really appreciated the extra...

    $400-$600

    Price

    6 days

    Duration

    Helpful?
    Yes
    No
  • G
    image-docs

    grace_vest

    Repeat Client

    US

    United States

    5

    We 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?
    Yes
    No
  • J

    julianhayes2005

    US

    United States

    5

    Working with Bobby has been a great experience. He is very knowledgeable in HVAC design and takes the time to explain the reasoning behind his decisions, which made it much easier for me to understand the system as a homeowner. His design is thoughtful, practical, and clearly based on real-world installation...

    $400-$600

    Price

    7 days

    Duration

    Worksample image
    Helpful?
    Yes
    No
  • R

    rich_da

    US

    United States

    4.7

    This was my first time using Fiverr. Very positive experience. Bobby completed this quickly and did an excellent job. I would definitely recommend him for this service to anyone building a house.

    $200-$400

    Price

    4 days

    Duration

    Helpful?
    Yes
    No
Reviews

467 reviews for this Gig
5.0

(451)
(15)
(1)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    4.9
Sort By
Most relevant
  • P
    image-docs

    pjest2010

    Repeat Client

    US

    United States

    5

    Bobby 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?
    Yes
    No
  • T
    image-docs

    torrds

    US

    United States

    5

    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 behind the calculations. I had several follow-up questions, and his explanations were thorough, clear, and helpful. I really appreciated the extra...

    $400-$600

    Price

    6 days

    Duration

    Helpful?
    Yes
    No
  • G
    image-docs

    grace_vest

    Repeat Client

    US

    United States

    5

    We 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?
    Yes
    No
  • J

    julianhayes2005

    US

    United States

    5

    Working with Bobby has been a great experience. He is very knowledgeable in HVAC design and takes the time to explain the reasoning behind his decisions, which made it much easier for me to understand the system as a homeowner. His design is thoughtful, practical, and clearly based on real-world installation...

    $400-$600

    Price

    7 days

    Duration

    Worksample image
    Helpful?
    Yes
    No
  • R

    rich_da

    US

    United States

    4.7

    This was my first time using Fiverr. Very positive experience. Bobby completed this quickly and did an excellent job. I would definitely recommend him for this service to anyone building a house.

    $200-$400

    Price

    4 days

    Duration

    Helpful?
    Yes
    No