BUYER QUESTIONS
HHO & Tornado FAQ
Plain answers about the catalog and your next enquiry.
How do I find my Tornado or Cyclone model?
Choose the model group in the size finder. Standard intake models have published inch dimensions. Carburetor and European models can be selected by their exact catalog codes.
How should I measure an air intake?
Use the measurement point specified by the vehicle or component documentation. Record the diameter in inches. Check the size chart and email your model code and measurement before ordering.
What does dry cell mean in this catalog?
The dry-cell assemblies shown here use a stacked-plate construction. Ask for the current model documentation, connections and dimensions for the unit you are considering.
What is included in the generator plans?
The original catalog describes 19 designs. The original plan files are not currently available for download. Email us about the plans before ordering.
Can I order online?
Contact HydrogenPros by email about the item you want. Online checkout is not available.
What information should I send?
Include the product name, model code if applicable, quantity and the details you need confirmed. For a generator, request the current specification sheet and parts list.
Ordered the wrong size?
Size exchanges are available within 60 days of delivery without an additional charge for the part. You pay shipping both ways. Email your order number for instructions.
What is the return window?
Return an item in resellable condition within 30 days of delivery for a refund of the product price. Original shipping is not refunded, and you pay return shipping. Email your order number before sending a return.