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...

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.


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.

Reviews

537 reviews for this Gig
5.0

(518)
(18)
(1)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    4.9
Sort By
Most relevant
  • D

    dave_1794

    US

    United States

    5

    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?
    Yes
    No
  • D

    dustin_crandall

    US

    United States

    5

    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

    Worksample image
    Helpful?
    Yes
    No
  • S

    saltygill

    US

    United States

    Ongoing collaboration
    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
    image-docs

    torrds

    US

    United States

    Ongoing collaboration
    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...

    $600-$800

    Price

    8 days

    Duration

    Helpful?
    Yes
    No
  • 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
Reviews

537 reviews for this Gig
5.0

(518)
(18)
(1)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    4.9
Sort By
Most relevant
  • D

    dave_1794

    US

    United States

    5

    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?
    Yes
    No
  • D

    dustin_crandall

    US

    United States

    5

    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

    Worksample image
    Helpful?
    Yes
    No
  • S

    saltygill

    US

    United States

    Ongoing collaboration
    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
    image-docs

    torrds

    US

    United States

    Ongoing collaboration
    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...

    $600-$800

    Price

    8 days

    Duration

    Helpful?
    Yes
    No
  • 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