Designing or retrofitting a fan inside an existing air handler can feel complicated when you’re staring at an unfamiliar unit. Different manufacturers build air handlers in different ways, documentation on older equipment is often missing, and it’s easy to end up relying on rough guesses or making return visits for one more measurement.
The new Q-PAC Field Take Off Sheet is built to eliminate that frustration. It gives anyone learning the Q-PAC design process a clear, reliable starting point by laying out the measurements that matter most and guiding users through exactly what to capture. New users can gather accurate information with confidence, and those who are well versed in Q-PAC Fans get a consistent framework that reduces the chance of missing key details. The result is faster site walks, fewer surprises, and projects that move forward without delays or extra trips back to the unit. With the field take off sheet we have outlined the plan to maximize your efficiency when designing and ordering a Q-PAC Fan.
Everything you need to design an air handler fan, in one place
A Q-PAC Fan only requires five pieces of information to generate a complete design: air handler internal width and height, airflow, static pressure, and voltage. Once you have those, our configurator instantly produces the layout, motor count, performance, and electrical data for your multimotor plenum fan.
The Take Off Sheet is designed to help you collect those five items quickly and accurately, providing confidence that your upgrade will be successful. It also includes optional measurements that make the process of upgrading your air handler fan even smoother. If airflow or static pressure aren’t known, the sheet gives simple guidance for estimating them. If you want to make installation easier, it includes measurements like coil dimensions, electrical connection location / orientation, and air tunnel size. All of this is laid out clearly on the sheet along with a diagram to show exactly where each point should be measured.
Designed around how people actually work in the field
Every detail on the sheet serves a purpose.
Airflow and static pressure determine the size and performance of the fan system. Coil face dimensions help estimate airflow when documentation is missing. Air tunnel ID ensures the fan fits the space where it will be installed. Motor side and access notes help with coil cleaning and serviceability planning. Distance from the coil to the fan helps the system perform the way it should. Even a simple reminder about filter type and quantity gives useful context when pressure data is unavailable.
All of this mirrors the reality of fieldwork: you don’t always have perfect information, and you don’t always have unlimited time on site. The Take Off Sheet accounts for that.
Turning your field data into a complete fan design
Once you’ve filled out the sheet, you can enter the required data into the Q-PAC Configurator. The moment you hit submit, you receive a complete design package built around your specific air handler. The optional measurements on the sheet help make sure the system fits and performs exactly as expected when it arrives.
A small step that saves entire days of work
The Field Take Off Sheet is simple by design. It prevents callbacks, reduces mistakes, and gives anyone walking a job site the confidence to gather the right information in one trip. Whether you're brand new to Q-PAC Fans or simply want a faster and more reliable way to capture air handler data, this sheet guides you through the process with clarity and consistency.
It’s a straightforward tool that makes the entire project easier from the first site walk to the final installation.
