Tell us about the project

Three things set everything else: where the house is, what you are building, and who is the designer.

Municipality (building department)

Site address

Project

Who is the designer?

Your name

Email (the package is sent here)

Heating

Fuel

Cooling

Wall system

Bedrooms

Bathrooms

Upload the drawings

Floor plans for every level, elevations or the window schedule, and the wall / roof section if you have it. PDF is best; photos work.

Everything is read by the software and shown to you before any number is used.

A few things the drawings didn't tell me

I read the sheets. Here is what I could not settle on my own — answer what you know; anything you skip gets the code-minimum value and a flag on the assumptions page.

Review the model

This is what the calculation will use. Fix anything the drawings say differently — you are confirming the inputs as the designer. Totals update as you type.

Air-tightness

Above-grade wall, effective R

Ceiling to attic, R

Window U (Btuh/ft²·°F)

Foundation insulation

Basement depth below grade, ft

HRV / ERV make & model

HRV rated cfm

Room	Level	Use	W ft	D ft	or area ft²	Ht ft	Exposed wall ft	Window ft²	Door ft²	Attic above	Fdn wall ft	Source

Exposed wall = total length of the room's walls that face outdoors. Fdn wall = length of basement wall the room sits against.

Your mechanical permit package

A watermarked preview of the complete set. Check it page by page; if something is wrong, go back and fix the model — the package is rebuilt in seconds.

Tell us about the project

Upload the drawings

A few things the drawings didn't tell me

Review the model

Your mechanical permit package

Get the final package

Done

What to do with it