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

5.0
5.0

United States

I speak English

1,500 orders completed

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...

Buyers keep returning

Bobby has an exceptional number of repeat buyers

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

520 reviews for this Gig
5.0

(502)
(17)
(1)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    4.9
Sort By
Most relevant
  • D

    darrinmcclary

    US

    United States

    5

    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?
    Yes
    No
  • S

    saltygill

    US

    United States

    5

    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 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

    Worksample image
    Helpful?
    Yes
    No
  • T

    tcs361

    US

    United States

    5

    Timely delivery with great communication and professional results. I had a unique house design that required a lot of communication, and he worked with me to get an accurate Manual J calculation. No issues whatsoever.

    $200-$400

    Price

    7 days

    Duration

    Helpful?
    Yes
    No
  • D

    drnicolevale

    US

    United States

    5

    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

    Worksample image
    Helpful?
    Yes
    No
  • S

    seaseaceramics

    US

    United States

    4.7

    Enjoyed working with Bobby. He provided the reports sooner than promised and was quick to answer my questions. I highly recommend his services.

    $200-$400

    Price

    4 days

    Duration

    Helpful?
    Yes
    No
Reviews

520 reviews for this Gig
5.0

(502)
(17)
(1)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    4.9
Sort By
Most relevant
  • D

    darrinmcclary

    US

    United States

    5

    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?
    Yes
    No
  • S

    saltygill

    US

    United States

    5

    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 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

    Worksample image
    Helpful?
    Yes
    No
  • T

    tcs361

    US

    United States

    5

    Timely delivery with great communication and professional results. I had a unique house design that required a lot of communication, and he worked with me to get an accurate Manual J calculation. No issues whatsoever.

    $200-$400

    Price

    7 days

    Duration

    Helpful?
    Yes
    No
  • D

    drnicolevale

    US

    United States

    5

    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

    Worksample image
    Helpful?
    Yes
    No
  • S

    seaseaceramics

    US

    United States

    4.7

    Enjoyed working with Bobby. He provided the reports sooner than promised and was quick to answer my questions. I highly recommend his services.

    $200-$400

    Price

    4 days

    Duration

    Helpful?
    Yes
    No