HVAC ductwork
Lay out HVAC ductwork in 3D with standard ducts, elbows, reducers, collars and registers. Only compatible fittings snap together, then get a parts list.
How it works
Start at the plenum and add ducts, elbows, tees and reducers. Only fittings that match the open end's size and shape are offered.
Watch the demoThe parts list adds up duct lengths, collars, registers and dampers as you design, ready to take to the store.
Watch the demoMatch the list to store products and fill your cart at The Home Depot, Lowe's or McMaster-Carr, then review it before checkout.
Watch the demo
Click an open end on a pipe or fitting and the parts drawer opens with compatible options, such as the next elbow or length of pipe. Pick one to attach it at that joint. On PVC pipe projects, the next part comes from the joint that needs it, not a long catalog hunt.
Bring a loose part close to a supported connection point and it seats into place, lined up with the rest of your build. Snapping takes the fiddly guesswork out of joining uprights, rails and other members, so each piece meets its neighbour at the connection itself rather than just floating nearby.
Every board, pipe and fitting you add shows up in a parts list beside your 3D model, with quantities that update as the design changes. Hover a row to find those parts in the scene, then check the counts before you cut or shop. Your design becomes a list you can review line by line.
Once your design is ready, match each line on your parts list to a store product, check purchase quantities and skip anything you already own. When you are signed in, Crafti fills that retailer's cart for you to review before checkout. You skip retyping every part by hand, and nothing is bought until you decide.
Click two points on your model to read the distance between them, with units shown along the dimension line. Lengthen an upright and the line and its value update together, so the measurement keeps up with your change. Check sizes and clearances on screen before you cut a single piece.
Over 7,300 real parts across 346 categories, ready to drop into your design: lumber in every common size, pipe and fittings in PVC, copper and steel, 80/20 aluminum framing, steel tube and bar, screws and brackets, wheels, casters and actuators, electrical and HVAC parts, plus people, plants and furniture for scale.
Try
The parts library
Galvanized steel supply and return parts in the sizes used in homes, each with its real connection size.
Round and rectangular duct with adjustable and fixed elbows.
Branches and size changes for trunk-and-branch layouts.
Starting collars, boot adapters and duct connectors.
Registers, ceiling diffusers, airflow and fire dampers, exhaust vent caps and end caps.
Counted from the live catalog. Search every part in the library.
Why Crafti
Did you ever wonder what software is used to design HVAC systems or duct designs? Well, it's this one! Once you have calculated the heating and cooling loads for each space in your home or office, our HVAC Duct Design Software will help you visualize your HVAC System.
You'll be able to connect ducts & fittings, dampers & plenums according to the volume flow rate in each space.
Save some money by designing your HVAC System in web-based software you can start using for free. It lets you share the design with an installer or engineer. It will also allow you to download the part list with real measurements of each part you used.
HVAC systems might look complex, but if you know the role that each piece plays and how they fit together, this app will help you to design and optimize the size of the ducting system. The most recommended ducts are rounded but in case there is lack of space, square ones will work perfectly.
Both are preloaded in our software with different sizes.Start snapping together galvanized ducts with stacked head elbows, HVAC splice collars, galvanized elbows and other components you'll find in our duct design software.
You’ll only need to acquire your own heat exchanger or condensing unit to finish off your DIY project. Start with one section of your home and share your design with an engineer, family or friends in case you need a second opinion.
Using our HVAC Duct Design Software might seem daunting without guidance. If you aren’t yet convinced, start by building or replicating existing HVAC systems. As you gain experience and become more familiar with the various HVAC components, you can design a bigger and more complete project on your own!
Soon you'll know where heat exchangers should go and where to install evaporator coils. Where to avoid using flat fittings and instead use smoothed profiles to avoid reduction of the flow.
Each of our pre-designed HVAC projects includes an easy-to-follow guide. Explore the steps involved in constructing your living room's air conditioning or your loft's heater system with your own hands. You have the flexibility to select HVAC projects that align with your objectives and requirements.
It doesn't matter! Crafti is here for anyone interested in DIY projects. The crucial thing is to understand the basics of HVAC in order to design your system. When it comes to our software, just jump-start your project by constructing one of the designs showcased in our gallery or selecting the first part of a circular galvanized duct to create a new design.
Gain access to the complete list of parts with accurate measurements, just like a pro engineer! If you start from scratch or select a HVAC System 3D design, it automatically gets generated.
Questions
No. Crafti doesn't do load or airflow calculations. If you already know your duct sizes, for example from the equal friction method, it makes laying out and counting the parts easy.
Yes, along with the transitions, boots and collars between them.
Yes. Registers, return grilles and filter frames are in the library alongside the supply fittings.
No! It all works on the browser. It works on your phone as well as your computer!
Yes! You can save your design in your account.
Yes! You'll have a unique URL for every design you save which you can send to anyone! They can then see or clone the design. They cannot edit your design. You can also delete it whenever you'd like.
Crafti has 7,300+ parts across aluminum 8020, steel, wood, HVAC and PVC! Let us know if we're missing a part.
I spent a year building an off grid farm and knew nothing about construction / plumbing / electrical work…
I saw that most people had to go the hardware store multiple times and many times they weren’t able to finish their work that day because the vendor didn’t have the part. So I thought if you can design your project beforehand, it will allow us to check for compatibility while you’re designing and then fill your cart at the store with everything you need! Much easier!
HVAC components can get connected with various systems to enhance it’s functionality, like thermostats, building management systems (BMS), sensors, ventilation systems, energy management systems (EMS), remote monitoring and control, integration with renewable energy sources among others.
The idea for Crafti is to be a place where you can design your entire project ready to connect with other components so you have a clear vision of what you want to accomplish.
Crafti doesn't sell parts itself. When your design is ready, it fills your cart at McMaster-Carr, The Home Depot or Lowe's so you can review everything before you check out.
According to the needs and specifications of different buildings and applications, you may find yourself analyzing the following types: Split systems for residential or small buildings.
Packaged systems for roofs or beside buildings.
Ductless mini-split systems for retrofitting older buildings.
Heat pumps able to reverse the refrigeration cycle into heating.
Hybrid heat systems for regions with fluctuating weather conditions.
Variable refrigerant Flow (VRF) commonly used in commercial buildings.
And chilled water systems to cool through pipes buildings.
Yes. We keep adding parts and features based on the feedback we get, so let us know what you need!
Certainly! If you're equipped with the necessary expertise and seek assistance with tasks like system sizing, ensuring energy efficiency, designing ductwork, complying with codes, or estimating costs, HVAC software can be incredibly useful. It's expected that these software solutions would provide accurate outputs, detailing all parts along with their precise measurements in a user-friendly format.
Yet, it's important to recognize that while these HVAC software tools are excellent for individual design work, they might not support online sharing of designs and specifications, preventing collaboration and visibility to others.
Here is a good video with a full worked example.
Sure! Here are some basic concepts.
How to Use 80/20 Aluminum
How to Cut PVC Pipe
Can I Connect PVC Pipe with Metal Threads?
How to Connect PVC Pipe without Glue
Yes please visit our YouTube Channel and learn about:
Crafti Tutorial: Design Your Woodworking Project!
Crafti Tutorial: How to design your DIY PVC Project!
No. You can design for free, and many features work in the free version. Crafti Pro unlocks some features and includes monthly credits for Crafti AI. See Pricing for what it includes.
Keep exploring
Woodworking Design Software
PVC and Plumbing Design Software for DIYers
8020 Aluminum Design SoftwareT Slot Design SoftwareIf you're looking to learn how to build an HVAC duct system, this is for you!
Let's go over the basics of how to find the part you're looking for to build your project!
Let's cover the basics of snapping in Crafti!
Learn how to use measurement tools to design with precision. We'll show you how to measure profiles, vertex-to-vertex distances, and total scene dimen…
Design in your browser on your phone or computer, then get the parts list, cut plan and assembly steps.
Start a Project