Every HVAC document your permit may ask for.

Manual J, S and D: the core set

Manual J calculates the heating and cooling loads room by room, Manual S checks the planned equipment against those loads with manufacturer data, and Manual D sizes the ducts for the airflow each room needs. Building codes based on the IRC and IECC reference all three. They are the basis for every other document on this page.

HVAC duct layout drawing

A plan sheet drawn over the floor plan that shows the duct runs, the supply outlets and registers per room, the return grilles and return path, and where the furnace, air handler or heat pump sits. Many plan reviewers want to see where the ducts run and that the sizes match the Manual D, and install crews build from it. We draw it from the Manual D design in Wrightsoft Right-Draw / Right-D and deliver it as a PDF.

ASHRAE 62.2 whole-house ventilation

ASHRAE Standard 62.2 sets the minimum mechanical ventilation for homes. In the 2016 and 2019 editions the whole-house rate is Qtot = 0.03 × conditioned floor area (sq ft) + 7.5 × (number of bedrooms + 1), in cfm. Example by the formula: a 2,000 sq ft house with 3 bedrooms needs 0.03 × 2,000 + 7.5 × 4 = 90 cfm. A credit for natural infiltration may reduce the mechanical rate, but only when a measured blower-door result is available – we apply it only if you send one. You need it when your jurisdiction or a program (for example ENERGY STAR) asks for ASHRAE 62.2; codes based on the IRC have their own ventilation table, and we state in the report which method we used. It appears as its own section in the report.

AHRI Directory certificate

The AHRI Directory of Certified Product Performance is a public database of certified equipment combinations. Its certificate shows a matched system – the outdoor unit with a specific indoor coil or air handler (and furnace, where it applies) – with its certified ratings. Rebate and tax-credit programs, utilities and some plan reviewers ask for it to prove that the installed combination is a certified match. We look up the combination that fits the Manual S selection in the brand or model line you name (otherwise a suitable combination from the requested line) and attach the certificate as a PDF: an AHRI Directory certificate from the public lookup.

REScheck compliance report

REScheck is the free software of the U.S. Department of Energy for showing that a new home or addition meets the residential energy code (IECC or a state code based on it), usually through the envelope trade-off. Many building departments accept a REScheck report with the permit. We prepare it from the Manual J data. The compliance report is signed by the builder or designer of record, and the building department decides whether it accepts REScheck. Not available in Florida (own energy code compliance method, Form R405 with approved software) and California (Title 24).

ENERGY STAR HVAC Design Report

Homes built to the ENERGY STAR Single-Family New Homes program need an HVAC Design Report: design conditions, Manual J loads, the Manual S equipment selection, the Manual D duct design and the ventilation design, on the program form. The HVAC designer completes it and the rater checks it against the house. We complete the HVAC Design Report from our Manual J, S and D results on the current form version; the HVAC designer of record and rater requirements of the program apply. It is not a certification of the home.

Rush 24h

When a permit or an inspection cannot wait, tick Rush in the project: we deliver within 24 hours on business days after we confirm your documents are complete. It costs $49 per house, billed with your next monthly invoice – and if we miss the deadline, the Rush fee is dropped. Everything else on this page is included in Loadpol Unlimited at no extra cost.

Last reviewed November 2026. Code sections refer to the International Residential Code and International Energy Conservation Code; local amendments may apply.