Ventilation Drawings
Draw ventilation plans — fast, easy and professional
Ventlo is the drawing tool that makes it easy to create professional ventilation drawings. Drag and drop ducts, diffusers and air handling units. Get automatic airflow calculations, bill of materials and PDF export — without learning complicated CAD software.
Hand-drawn ventilation blueprint — the way it's been done for generations
What is a ventilation drawing?
From pen and ruler to digital — in minutes
A ventilation drawing shows exactly where ducts, diffusers, air handling units and other components should be placed in a building. The drawing is a critical technical document — it is used during installation, ventilation inspections and building permit applications.
For generations, ventilation drawings required paper, rulers and hours of meticulous work. Today, Ventlo replaces the pens with a digital tool built specifically for HVAC installers — with industry-specific features that make the job faster, easier and more precise.
How it works
From floor plan to finished ventilation drawing — in minutes
Upload floor plan
Import your floor plan as a PDF or image. Ventlo scales it automatically so all measurements are accurate.
Draw the ventilation system
Drag and drop ducts, diffusers and air handling units directly on the floor plan. Choose from 100+ products.
Calculate airflows automatically
Ventlo calculates airflows and optimizes duct dimensions for you — no separate calculation software needed.
Export and deliver
Export your ventilation drawing as a PDF — including bill of materials, flow diagrams and building permit documentation.
Benefits
Why choose Ventlo for your ventilation drawings?
10× faster
Draw a complete ventilation plan in minutes instead of hours. No more CAD hassle.
Always accurate
Automatic calculations ensure airflows and dimensions are always correct.
Web-based
No installation needed. Works in all modern browsers, wherever you are.
Bill of materials instantly
Get a complete order list with article numbers from your ventilation drawing with one click.
Building permit docs
Generate ready-to-submit documentation that meets municipal requirements.
Free to start
Create your account for free and start drawing ventilation plans right away — no credit card required.
Use cases
Ventilation drawings for all types of projects
Residential installations
Complete HRV drawings for houses with supply, extract and unit placement.
Apartment buildings
Ventilation drawings for apartment renovations and shared spaces.
Commercial spaces
Commercial ventilation drawings with demand calculations per zone.
Building permits
Drawings that meet municipal requirements for ventilation inspections.
Product library
100+ real products in your ventilation drawings
Ventlo includes a product library with real components from leading manufacturers like Systemair and Östberg. Directly in the drawing tool, you choose the right air handling unit, ducts and diffusers — and get a real bill of materials with article numbers.
- Air handling units from Systemair, Östberg etc.
- Ducts in all standard dimensions
- Supply and extract diffusers
- Automatic BOM with article numbers
FAQ about ventilation drawings
What is a ventilation drawing?
A ventilation drawing is a technical document showing the placement of ventilation ducts, diffusers, air handling units and related components in a building. It is used by installers, engineers and authorities to ensure correct air exchange and energy efficiency.
Who needs to create ventilation drawings?
HVAC installers, ventilation engineers and fresh air companies often need to create ventilation drawings for new construction, renovations and ventilation inspections. With Ventlo, even smaller firms can deliver professional drawings without expensive CAD software.
Can I draw HRV plans in Ventlo?
Yes. Ventlo is specifically built for HRV systems (Heat Recovery Ventilation). You can draw complete duct systems with supply and extract air, choose air handling units from our product library and get automatic airflow calculations.
Is Ventlo better than AutoCAD for ventilation drawings?
Ventlo is built specifically for ventilation installers and is significantly easier to use. You get industry-specific tools like automatic flow calculations, bill of materials and product library — features that require expensive add-ons in general CAD software.
How long does it take to draw a ventilation plan?
With Ventlo, a standard residential plan takes 15–30 minutes instead of several hours in traditional software. Thanks to drag-and-drop, automatic calculations and ready-made products, you save up to 90% of the time.
Does Ventlo cost anything?
Ventlo is completely free during our early phase. You don't need a credit card and get access to all features — unlimited drawings, PDF export, bill of materials and automatic calculations.
Start drawing ventilation plans today
Create your free account in under a minute. No credit card, no commitment.
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