Manual D Duct Design for $100, in every US city.
Manual D duct design for your city: supply and return sizes per room, airflow, friction rate and total effective length, ready for the permit and the install crew. $100 with Manual J and S included.
- J + S + D for $100
- Permit-ready PDF
- 2–3 business days
- No subscription
Free quote confirmation, no account needed. You pay per house, no subscription.
A report your plan reviewer recognizes.
Every report is built from your actual plans, and delivered as one PDF you can upload with the permit application.
Example screen with sample numbers (heating / cooling Btu/h per room). Your report uses your plans.
J, S & D for $100. All three.
One price for every builder and every contractor, from the first house. No subscription, no software license, no minimum order.
Manual J + S + D
All three reports for one house, matched to each other, in one PDF package.
Order for $100Manual J
Room-by-room heating and cooling loads (sensible and latent) to ACCA Manual J 8th Edition.
Manual S
Checks the furnace, heat pump or AC you plan against the Manual J loads and manufacturer data.
Manual D
Duct sizing per room: airflow (CFM), supply and return sizes, friction rate and static pressure.
$100 per dwelling unit for all three reports, also if you need only one of them. Confirmed before we start. Unusual projects (very large custom homes, more than two systems) are quoted first.
Square feet per ton is not a calculation.
Two houses with the same floor area can need very different equipment. Windows, orientation, insulation, air leakage, duct location and climate change the load. Codes require ACCA Manual J and Manual S because rules of thumb usually oversize.
Manual D Duct Design in every state.
- Alabama 594
- Alaska 355
- Arizona 467
- Arkansas 625
- California 1,618
- Colorado 481
- Connecticut 214
- Delaware 79
- District of Columbia 0
- Florida 956
- Georgia 673
- Hawaii 163
- Idaho 234
- Illinois 1,461
- Indiana 975
- Iowa 1,026
- Kansas 738
- Kentucky 553
- Louisiana 486
- Maine 155
- Maryland 536
- Massachusetts 248
- Michigan 745
- Minnesota 915
- Mississippi 426
- Missouri 1,072
- Montana 496
- Nebraska 593
- Nevada 132
- New Hampshire 100
- New Jersey 700
- New Mexico 528
- New York 1,293
- North Carolina 773
- North Dakota 406
- Ohio 1,263
- Oklahoma 838
- Oregon 425
- Pennsylvania 2,002
- Rhode Island 36
- South Carolina 475
- South Dakota 485
- Tennessee 503
- Texas 1,859
- Utah 334
- Vermont 179
- Virginia 688
- Washington 639
- West Virginia 438
- Wisconsin 808
- Wyoming 205
Largest cities
- New York, NY
- Los Angeles, CA
- Chicago, IL
- Houston, TX
- Phoenix, AZ
- Philadelphia, PA
- San Antonio, TX
- San Diego, CA
- Dallas, TX
- Jacksonville, FL
- Fort Worth, TX
- San Jose, CA
- Austin, TX
- Charlotte, NC
- Columbus, OH
- San Francisco, CA
- Seattle, WA
- Denver, CO
- Oklahoma, OK
- El Paso, TX
- Las Vegas, NV
- Boston, MA
- Detroit, MI
- Portland, OR
- Memphis, TN
- Baltimore, MD
- Milwaukee, WI
- Albuquerque, NM
- Tucson, AZ
- Fresno, CA
- Sacramento, CA
- Atlanta, GA
- Mesa, AZ
- Kansas, MO
- Raleigh, NC
- Colorado Springs, CO
- Omaha, NE
- Miami, FL
- Virginia Beach, VA
- Long Beach, CA
For builders and HVAC contractors.
We work as your back office for load calculations: you build and install, we deliver the numbers and the paperwork.
Home builders & developers
- Manual J, S and D with every permit set
- Same $100 price for one house or a whole subdivision
- Repeat plans: we keep your models on file
- One contact for all your projects
HVAC contractors
- Size equipment right and win the bid on facts
- Load calc for replacement permits and rebates
- Manual D before the duct crew starts
- No software license, pay only when you have a job
From plans to permit in three steps.
- Send your plansAnswer four questions, then email or upload floor plans, elevations, window schedule and insulation specs.
- We calculateManual J loads, Manual S equipment check and Manual D duct design, matched to each other.
- Permit-ready PDFDelivered in 2–3 business days. If plan review asks for changes to our report, we revise it free.
Send the plan set. We do the rest.
- Floor plans of every level with dimensions
- Elevations or the direction the front door faces
- Window and door schedule (sizes, U-factor, SHGC)
- Insulation levels: walls, ceiling/attic, floor, slab or basement
- Ceiling heights and any vaulted areas
- Duct location (attic, crawlspace, conditioned space)
- Planned equipment type: heat pump, AC + furnace, mini-split
- Air leakage target if known (ACH50)
Missing something? We tell you before we start and use code minimums only if you confirm.
Manual D Duct Design: questions, answered.
What does a Manual D report include?
Design airflow for every room, supply and return duct sizes, the available static pressure and friction rate, and the longest run (total effective length). It is based on the blower data of the equipment you select.
How much does a Manual J cost?
$100 per house for Manual J, Manual S and Manual D together. No subscription and no minimum order.
How fast do I get the report?
Usually 2–3 business days after we receive complete plans and specs.
Will the building department accept it?
Reports follow ACCA Manual J 8th Edition, Manual S and Manual D and use the plans you send. Acceptance is up to your building department; if plan review asks for corrections to our report, we revise it at no charge.
Do you work with builders and contractors on many houses?
Yes. Builders and HVAC contractors are our main customers. The price stays $100 per house for J, S and D, and repeat plans are kept on file.
What do I need to send?
Floor plans, elevations or orientation, the window and door schedule, insulation levels, duct location and the equipment you plan to install.
Are reports engineer-stamped?
Standard reports are not PE-stamped. If your jurisdiction requires a stamp, tell us before ordering.
