For builders & HVAC contractors · all 50 states

Manual J, S & D together for $100.

Permit-ready ACCA load calculations, equipment selection and duct design for new homes, additions and replacements in every US city. Send the plans, get the PDF.

J + S + D for $100
Permit-ready PDF
2–3 business days
No subscription

Manual J + S + D · $100 per house

Free quote confirmation, no account needed. You pay per house, no subscription.

What you get

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.

Room by roomHeating, sensible and latent cooling load and airflow for every room.

Code referencesPrepared to ACCA Manual J 8th Edition, Manual S and Manual D.

Matched equipmentManual S check against manufacturer data for the unit you plan.

Duct sizesManual D supply and return sizes, friction rate and static pressure.

Example screen with sample numbers (heating / cooling Btu/h per room). Your report uses your plans.

Pricing

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.

Full permit set

Manual J + S + D

$100 / house

All three reports for one house, matched to each other, in one PDF package.

Order for $100

Load calculation

Manual J

✓ included

Room-by-room heating and cooling loads (sensible and latent) to ACCA Manual J 8th Edition.

Equipment selection

Manual S

✓ included

Checks the furnace, heat pump or AC you plan against the Manual J loads and manufacturer data.

Duct design

Manual D

✓ included

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.

Why Manual J

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.

Order a Manual J for $100

Oversized equipment short-cyclesMore wear, more noise, worse humidity control and a higher price for the unit.

Undersized equipment falls behindRooms cannot hold temperature on the hottest and coldest days, and callbacks follow.

Plan review wants the reportIRC M1401.3 and IECC R403.7 require Manual S sizing based on Manual J loads.

Built for the trade

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.

Row of new homes in a growing subdivision

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

New two-story home nearly finished on a construction site

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

Partner program

How it works

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.

Builder and contractor reviewing construction plans — **Your plans**PDF, CAD or photos of the plan set are fine.

Floor plan with a pen and ruler — **Room by room**Every room, window and wall entered from the plans.

Roof trusses of a new house against a blue sky — **Ready before rough-in**Equipment and ducts sized before the crews start.

The difference

Rule of thumb vs Manual J.

Rule of thumb

400–600 sq ft per ton, same everywhere
Ignores windows, insulation and orientation
No room-by-room airflow for the ducts
Not accepted as a load calculation

Manual J + S + D

Local design conditions and your real plans
Heating, sensible and latent load per room
Equipment checked against manufacturer data
Ducts sized to the airflow each room needs

What we need

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.

The short version

Loadpol prepares residential load calculations (Manual J), equipment selection (Manual S) and duct design (Manual D) following ACCA procedures, based on the plans and specifications you provide. $100 per house for Manual J, S and D together, no subscription. Loadpol is not affiliated with or endorsed by ACCA. Reports are not stamped by a licensed engineer unless agreed in writing; your building department decides what it accepts. Terms of Service →

Find your city

Manual J in every US city.

Largest cities

States

FAQ

Questions, answered.

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.

Your next permit, sized right.

Manual J, S and D together for $100. Send the plans today.

Order now