Unlimited Manual J, S & D – done for you. $250/month.
No software, no training, no hours at the desk. Upload plans or a LiDAR scan in your account, our team calculates every house in ACCA-approved software, and you download the permit-ready PDF.
Start Unlimited · $250/mo Try it free – first house on us
Your first house is free: create an account and upload one project – no agreement, no credit card.
- First house free
- Unlimited houses
- J + S + D done for you
- 2–3 business days
- Plans or LiDAR scan
Example screen with sample numbers (heating / cooling Btu/h per room). Your report uses your plans.
- ACCA-approved software
- Wrightsoft Right-J8 & Right-D
- Manual J 8th Ed. · S · D
- Permit-ready PDF
- Plans or LiDAR scan
- All 50 states
Wrightsoft Right-J8 and Right-D are on ACCA’s approved software list. Loadpol is not affiliated with or endorsed by ACCA or Wrightsoft.
Everything for the permit. Nothing to install.
No software, no training, no hours at the desk. You upload, we calculate, you download.
Unlimited Manual J, S & D. $250 a month.
One plan for builders, developers and HVAC contractors: upload every house you permit, our team calculates them all.
Loadpol Unlimited
Unlimited houses with Manual J, S and D plus duct layout drawing, ASHRAE 62.2 ventilation, AHRI certificate, REScheck and ENERGY STAR HVAC Design Report. No per-house fees.
Start UnlimitedTry it free – your first house is on us, no credit card. Create an account.
12-month agreement signed online, then month to month with 30 days’ notice. Billed monthly by Stage Strategy USA, Inc.
- Unlimited houses every month – no per-house fee
- Manual J room-by-room heating and cooling loads
- Manual S equipment selection with manufacturer data
- Manual D duct design: airflow, sizes, static pressure
- HVAC duct layout drawing (ducts, registers, returns, equipment)
- ASHRAE 62.2 whole-house ventilation rate
- AHRI Directory certificate for the matched system
- REScheck compliance report (not available in FL and CA)
- ENERGY STAR HVAC Design Report, filled in from J, S and D
- Calculated by our team in ACCA-approved software
- Permit-ready PDFs, typically 2–3 business days after complete plans
- Plans or a LiDAR scan of an existing house
- Free revisions when plan review asks for changes
- Your plans and models kept on file for repeat lots
- Your logo and company details on every report
- Built-in CRM: customers, proposals with energy-savings chart, invoices
- Read-only share links for HERS raters and building departments
- Export to ServiceTitan / Housecall Pro (CSV) and open API
Documents within 24 hours on business days after we confirm your documents are complete. If we miss it, there is no fee. Billed with your next monthly invoice.
No single orders. A house is one building with one floor plan at one address; REScheck not available in FL and CA. Details in the Terms.
Everything the building department needs for HVAC – in one subscription.
Every document below is included in Loadpol Unlimited at $250 a month, for every house. Pick what your jurisdiction or program asks for in the project.
Documents within 24 hours on business days after we confirm your documents are complete. If we miss it, there is no fee. Billed with your next monthly invoice.
REScheck is not available in Florida and California (own compliance methods). The REScheck report is signed by the builder or designer of record; ENERGY STAR program requirements for the HVAC designer of record and rater apply. Not affiliated with AHRI, the U.S. DOE or ENERGY STAR. What each document is and when you need it →
Load-calc software vs done for you.
- A license per user, plus training
- Someone enters every room, wall and window
- Hours at the desk for each house
- Your team owns errors and plan-review comments
- No software, no training
- Upload plans or a LiDAR scan, we do the data entry
- Manual J, S and D calculated by our team
- Permit-ready PDF, free plan-review revisions
From plans to permit in five steps.
You upload, we calculate, you download. Step 6 is optional.
- Sign up and sign the agreement
Create your account and sign Loadpol Unlimited online – about 5 minutes. $250 a month, 12-month agreement. Want to try first? Your first house is free, no agreement needed.
- You
- Create the account, sign online (or try one house free).
- We
- Open your account for unlimited houses.
- Create a project per house
Upload the plan set (PDF, DWG/DXF or images) – or, for an existing home, a LiDAR scan from an iPhone Pro or iPad Pro (apps such as Polycam or magicplan) – and fill in the key data. Tick the documents you need (J, S, D, duct layout and ventilation are preset; AHRI, REScheck, ENERGY STAR on request) and, if it is urgent, Rush 24h. For a quick equipment-replacement estimate, the address, a listing link and photos are enough (whole-house block load, not room by room).
- You
- Address/ZIP, conditioned area, stories, foundation, orientation, windows, insulation, duct location, planned system. What we need
- We
- Keep your plans on file for repeat lots.
- We check the documents
Within one business day we check that everything is there. If something is missing, we ask in your project messages and by email.
- You
- Answer questions in the project, add files.
- We
- Review plans and data, ask before we calculate.
- We calculate Manual J, S and D
Room-by-room loads (Manual J), equipment check against manufacturer data (Manual S) and duct design (Manual D) in ACCA-approved software (Wrightsoft Right-J8 and Right-D) – plus the duct layout drawing, ASHRAE 62.2 ventilation and, if selected, the AHRI certificate, REScheck and ENERGY STAR HVAC Design Report.
- You
- Nothing – no software, no data entry.
- We
- Enter every room, wall and window, run J, S and D and prepare every selected document.
- Download the permit-ready PDF
You get an email and download the report from your account – typically 2–3 business days after complete documents. If plan review comments on our report, we revise it free.
- You
- Submit the PDF with your permit application.
- We
- Revise the report free if plan review asks.
- Optional: quote and invoice the job
Use the built-in CRM to send the homeowner a Good / Better / Best proposal with an energy-savings chart, collect the e-signature and invoice the job.
- You
- Add prices, send the proposal link.
- We
- Prefill the proposal from the Manual J results.
No floor plans? Scan the house with your iPhone or iPad.
For existing buildings – equipment replacement, additions, renovations, finished homes – a LiDAR room scan replaces the plans. New homes that are not built yet still need plans.
- Scan every room with a LiDAR room-scan app on an iPhone Pro or iPad Pro (apps such as Polycam or magicplan).
- Export the scan and upload it to the project in your account.
- Enter windows, doors and insulation as far as you know them.
We draw the model from the scan and calculate Manual J, S and D as usual.
Tip: photos of the windows and of the equipment nameplate help. App names are examples only; we have no partnership with them.
USDZ, OBJ (+MTL), PLY, E57, LAS, GLB/GLTF, FBX, RVT – or a ZIP of the export. Plans as PDF, DWG, DXF or photos.
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.
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
- Unlimited houses for $250 a month, from one lot to whole subdivisions
- 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, no training, no hours at the desk
Upload 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)
Existing house without plans? A LiDAR scan from an iPhone Pro or iPad Pro works too. Missing something? We tell you before we start and use code minimums only if you confirm.

Loadpol prepares residential load calculations (Manual J), equipment selection (Manual S) and duct design (Manual D) following ACCA procedures, based on the plans, specifications or LiDAR scans you provide, in ACCA-approved software. Loadpol Unlimited: $250 per month for unlimited houses with Manual J, S and D plus duct layout drawing, ASHRAE 62.2 ventilation, AHRI Directory certificate, REScheck (not in FL and CA) and ENERGY STAR HVAC Design Report, on a 12-month agreement; optional Rush delivery $49 per house. 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 →
Not ready to sign up? Ask us.
Four quick questions about your projects. We reply within one business day.
For builders, developers and HVAC contractors. Unlimited houses with Manual J, S and D for $250 a month, 12-month agreement.
Manual J in every US city.
- Manual J Calculation
- Manual J Load Calculation
- HVAC Load Calculation
- Air Conditioning Load Calculation
- Manual J, S & D
- Manual D Duct Design
- Manual S Equipment Selection
- Heat Load Calculation
- Manual J Calculation Service
- HVAC Sizing Calculation
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
States
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Questions, answered.
How much does a Manual J cost?
Loadpol Unlimited is $250 a month for unlimited houses, each with Manual J, Manual S and Manual D, calculated by our team. 12-month agreement, then month to month. No per-house fees.
What documents are included?
Everything the building department needs for the HVAC side, for every house: Manual J, Manual S, Manual D, an HVAC duct layout drawing, the ASHRAE 62.2 whole-house ventilation rate, an AHRI Directory certificate (public lookup) for the matched system, a REScheck compliance report for new homes and additions where REScheck is accepted (not available in FL and CA) and the ENERGY STAR HVAC Design Report filled in from our Manual J, S and D. All included in the $250 a month, plus free plan-review revisions.
Is there a rush option?
Yes: Rush 24h for $49 per house. We deliver within 24 hours on business days after we confirm your documents are complete. If we miss the deadline, the Rush fee is dropped. It is billed with your next monthly invoice; available with Loadpol Unlimited, not for the free trial house.
Do you take single orders?
No. We only offer Loadpol Unlimited, the $250-a-month subscription for builders, developers and HVAC contractors. That keeps one simple price and your plans on file. To try us, your first house is free.
Can we try it first?
Yes – your first house is on us. Create an account and submit one project without an agreement or credit card; you get the same Manual J, S and D reports. From the second house on, Loadpol Unlimited applies. One free house per company, email domain and address.
Can the reports carry our logo?
Yes. Add your logo and company details (name, address, license, phone, email) in your account settings. We put them in the report header and on a cover page; the reports still state that Loadpol prepared them in ACCA-approved software.
Can you work from a Zillow or Redfin listing?
For an equipment replacement in an existing home, yes – as a quick block-load estimate: send the address, the listing link and photos (windows, equipment nameplate, attic). That is a whole-house estimate, not a room-by-room Manual J; permits that require room-by-room loads need plans or a LiDAR scan. The link is only a reference for our team – we do not copy data from listing sites.
Does it work with ServiceTitan or Housecall Pro?
There is no native connection. You can export customers and jobs as CSV in the column layout of their import templates (some mapping may be needed), use our REST API with your personal key, and receive webhooks when reports are ready, proposals are accepted or invoices are paid. Loadpol is not affiliated with ServiceTitan or Housecall Pro.
How fast do I get the report?
Typically 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 are prepared in ACCA-approved software (Wrightsoft Right-J8 and Right-D are on ACCA’s approved software list) from 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.
Is it really unlimited?
Yes. Every house you upload is included, with no per-house fee and no monthly cap. A house is one building with one floor plan at one address; if the building changes, the new calculation is included as well.
No floor plans? Can I scan the house with my iPhone or iPad?
Yes, for existing buildings (replacements, additions, renovations, finished homes): scan every room with a LiDAR room-scan app on an iPhone Pro or iPad Pro, for example apps such as Polycam or magicplan, upload the export and enter windows and insulation as far as you know them. We draw the model and calculate as usual. New homes that are not built yet need plans.
What do I need to send?
Floor plans (or a LiDAR scan of an existing house), 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 you upload.
Is there a CRM?
Yes. Loadpol Unlimited includes a simple CRM in your account: customers with properties, notes and follow-ups, Good / Better / Best proposals with an energy-savings chart and online e-signature, and invoices with deposit and payment tracking. Proposals can be prefilled from the Manual J results of a Loadpol project. There is no online payment and no automatic sales-tax calculation; you enter your own rates.
Read more: Manual J for Heat Pump Rebates · HVAC Permit Documents Explained · Manual J Software vs a Manual J Service · What Is a Manual J? · Manual J vs Manual S vs Manual D · Manual J Permit Requirements · How Much Does a Manual J Cost?

Your next permit, sized right.
Unlimited Manual J, S and D for $250 a month, done for you. Upload the plans today.
Start Unlimited · $250/mo