Professional Manual J Load Calculations for Western US Contractors
Code-compliant Manual J, D & S reports delivered in 5 business days. Serving Idaho, Oregon, Washington, Arizona, New Mexico, and Utah. Starting at $250.
Complete Manual J Load Calculation Solutions
Every order includes all three ACCA manuals in one bundled report — everything your permit department needs, delivered together.
Load Calculation
Room-by-room heating and cooling load analysis using ACCA-approved methodology. Determines accurate equipment sizing for optimal comfort, efficiency, and code compliance.
Learn more →Duct Design
Professional duct sizing and layout design to ensure proper airflow distribution throughout the structure. Prevents hot/cold spots and improves system efficiency.
Learn more →Equipment Selection
Recommended equipment specifications matched precisely to your load calculations and project requirements. No oversizing, no undersizing.
Learn more →From Plans to Permit-Ready Reports in 5 Days
Submit Plans
Send us your project plans, building details, window specs, and insulation values via email or our Contractor+ portal.
We Run the Calculations
Our design professionals perform room-by-room load calculations using ACCA-approved, industry-standard software.
Quality Review
Every Manual J, D & S report undergoes thorough review before delivery to ensure accuracy and full code compliance.
Reports Delivered
Inspection-ready reports delivered in 5 business days — or 48 hours for rush service. Ready to submit for permit.
The Western US Load Calculation Experts
We specialize exclusively in Manual J, D & S for western US climate zones. That focused expertise shows in every report we deliver.
Permit-Ready, Every Time
Our reports are formatted for permit submission in all six states we serve — Idaho, Oregon, Washington, Arizona, New Mexico, and Utah. Strong acceptance track record across all major jurisdictions.
Bundled Pricing, No Surprises
Manual J, D & S all included in one transparent price starting at $250. Volume discounts up to 15% or Contractor+ savings — whichever is greater applies automatically.
See pricing →Built for Western Climates
Specialized knowledge of western climate zones 2–6, local building codes, and regional HVAC requirements. From desert heat to mountain cold — we know these climates.
What HVAC Contractors Say
"Manual J USA has been my go-to for load calcs on every new build. Reports come back fast, are always permit-ready, and Tim is easy to work with. The bundled price beats everyone else."
"I was skeptical about outsourcing my Manual J calcs but Manual J USA changed that. The reports are thorough, accurate, and my inspectors have never had an issue. 48-hour rush has saved me more than once."
"The Contractor+ portal makes project management so easy. I track all my jobs in one place, get 5% off every order, and have all my old reports archived. Highly recommend for any volume contractor."
Save More with Contractor+
Join our membership program and get 5% off every order, plus priority service, project tracking, and exclusive resources.
5% Discount on Every Order
Save 5% on every Manual J, D & S order you place. For high-volume contractors, volume discounts of up to 15% apply — whichever is greater.
Priority Portal & Project Tracking
Exclusive online ordering system with real-time project status, order history, and downloadable report archive — all in one place.
Resources & Code Updates
Educational materials, western state code updates, and exclusive member communications to keep you current on HVAC compliance changes.
Manual J Reports Across the Western US
We serve all six western states with specialized knowledge of each region's climate zones, local building codes, and permit requirements.
Frequently Asked Questions
What is a Manual J load calculation?
A Manual J load calculation is an ACCA-approved engineering analysis that determines the exact heating and cooling capacity needed for a home or building. It accounts for climate zone, insulation, window area, occupancy, and dozens of other factors to ensure your HVAC equipment is properly sized — not oversized or undersized.
How long does a Manual J report take?
Standard turnaround is 5 business days. For urgent projects, we offer 48-hour rush service. Rush availability is subject to current workload — contact us to confirm availability before ordering.
What does Manual J USA charge for a load calculation?
Pricing starts at $250 flat for homes under 2,000 sq ft. Homes 2,000–4,000 sq ft are priced at $0.15/sq ft. Homes over 4,000 sq ft are $0.17/sq ft. All prices include the full bundle: Manual J, Manual D, and Manual S reports. See our full pricing page for volume discounts.
Are your reports accepted for building permits?
Yes. Our reports are prepared using ACCA-approved methodology and industry-standard software, formatted for inspection and permit submission in all six states we serve. We have a strong track record of permit acceptance across Idaho, Oregon, Washington, Arizona, New Mexico, and Utah.
Do I need Manual J, D, and S together?
Most jurisdictions requiring a Manual J also require Manual S (equipment selection) and often Manual D (duct design) for new construction and major HVAC replacements. We bundle all three in every order at no extra cost — one package, one price, everything you need for permit approval.
What states do you serve?
We serve Idaho, Oregon, Washington, Arizona, New Mexico, and Utah. Our team has specialized knowledge of each state's climate zones and local building code requirements. View our full service area details.
Learn About Manual J & HVAC Load Calculations
What Is a Manual J Load Calculation?
A plain-English explanation of what Manual J is, why it's required, and how it protects your projects from oversized or undersized equipment.
Read article →Manual J vs Manual S vs Manual D: What's the Difference?
The three ACCA manuals explained — what each one calculates, why they're each required, and how they work together for a complete HVAC design.
View all resources →Building Permit HVAC Requirements by Western US State
A contractor's guide to Manual J permit requirements in Idaho, Oregon, Washington, Arizona, New Mexico, and Utah — what's required and where.
View all resources →