How To - Pressure Test
How do you pressure test your in-floor heating system?
Video Coming Soon!
If something happened during installation, PEX pipes can develop leaks, especially under constant high pressure (Luckily the HUG Hydronics In-floor Heating system is a low pressure system), so it behooves the installer, and is required by code to check for leaks and repair or replace leaking PEX pipes before they lay concrete. They can/should also use the test kit to hold a constant pressure during the concrete pour.
How to pressure test the PEX:
- Install the end cap hose starting at the input side of your first loop with a clamp (All blue hoses should be pushed onto PEX at least ¾” and clamps need to be tightened with pliers).
- On the return end of your first loop, install a blue hose with clamp.
- Connect the other end of the blue hose to the input side of loop 2 and add a clamp (make sure the blue hose doesn’t kink).
- Add another blue hose with clamps from the return of loop 2 to the input of loop 3.
- Continue this process until all your loops are connected and you have 1 hose at the end without anything connected to it.
- Push the pressure gauge onto the last hose and install a clamp.
- Double check to make sure all your clamps and fittings are tight, secure, and that there are no kinks in any of the blue hoses.
- Add air from 30 to 50 PSI. Monitor air for at least 30 minutes. Check local codes.
- If there is a leak you will have to test each loop individually to find the leak. Repair the leak and retest.
What's Happening in Cottonwood?
Extreme Panel's demonstration house brings building techniques into the real world. As a sponsor, HUG Hydronics is providing Heat-Sheet, PEX, and the in-floor heating distribution system for the project.
Fellow EP Summit sponsor BUILD Show Network is documenting the process with cameras, interviews, and a closer look at each step of the process, leading up to the January 2027 Summit.
See the build come together.
Take a closer look at the project, then explore what radiant in-floor heating could look like in your own home, shop, or garage.
Start the HUG Product Wizard
What HUG Hydronics Brings to the Project.
- Start below the slab
- Heat-Sheet insulation provides the foundation for the project's radiant floor.
- Put warmth underfoot
- PEX loops carry heated fluid through the floor, turning the slab into part of the heating system.
- Bring it together with HUG Hydronics
- The HUG Hydronics system brings pumps and controls into a compact system simplifying the mechanical setup that serves the floor.
No. The Wizard is designed to walk you through the basics in plain language. Homeowners and building professionals can use it to explore what their project may need.
HUG Hydronics is sponsoring Extreme Panel's project by providing its in-floor heating materials and system. BUILD Show Network is a fellow EP Summit sponsor documenting the demonstration house. The summit is planned for January 2027.
Yes. Call HUG Hydronics at 218-587-5001 or email sales@hugllc.com. Additionally, completing the HUG Wizard is a useful first step toward discussing your program.
Nope, and we love Extreme Panel's way of building, however this project showcases only one type of application of HUG's system. HUG Hydronics can also be used in other homes, shops, garages, and ag buildings where radiant floor heating is appropriate.
Have your floor plan or approximate dimensions handy, along with basic details about your insulation, ceiling heights, and windows. Think about which spaces you'd like to control with separate thermostats. The Wizard will guide you through the planning process, and HUG's team can help review your project's needs.