Freeze Protection in Concealed Spaces
KB PlatinumX Compact Plenum-Rated Freeze Protection Heaters
When it comes to maintaining the safety and integrity of your building, preventing freezing temperatures in certain spaces is crucial. Whether you’re protecting valuable equipment, plumbing systems, or HVAC infrastructure, ensuring that your hidden spaces remain free from the risks of frost can save you from costly repairs and downtime. The challenge becomes even greater when those spaces are small and hard to reach, making proper heating and monitoring more difficult.
The KBU PlatinumX delivers dependable freeze protection, specially designed for those compact, hard-to-access spaces.

Benefits of Plenum-Rated Freeze Protection in Critical & Inaccessible Environments
Prevent Frozen Pipes:
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In areas such as plenum spaces, attics, basements, or crawlspaces, where pipes may be exposed to freezing conditions.
Protect Sensitive Equipment:
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In industrial or commercial settings, where freezing temperatures could damage machinery or equipment, the KBU PlatinumX ensures optimal working conditions.
Install In Areas Other Heaters Can’t Go:
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Designed for concealed spaces, such as plenum spaces above a drop ceiling or in any open space below a floor or even crawl spaces.
Protect HVAC Systems:
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Used within plenum spaces, KBU PlatinumX can help maintain proper temperatures and prevent freezing in air ducts or other critical areas of HVAC systems.
What Is A Plenum?
In building construction Plenum is a separate space provided for air circulation for heating, ventilation, and air-conditioning, providing pathways for either heated/conditioned or return airflows, usually at greater than atmospheric pressure. It is commonly found in the space between the structural ceiling and a drop-down ceiling or under a raised floor. In commercial settings such as schools or office buildings, the plenum space is often used to house connecting communication cables and other mechanical systems as well.
Products installed in those air-handling spaces must conform to a higher safety standard.
KBU PlatinumX is certified to ANSI/UL 1995 and CAN/CSA No. 236-05.
Why KBU PlatinumX Plenum-Rated Heaters?
KBU PlatinumX heaters were specifically engineered to provide reliable freeze protection and temperature maintenance for pipes, valves, equipment, and small enclosures across industrial, commercial, and residential applications. These heaters are particularly well-suited for areas where space is limited and fire safety is paramount, such as ceiling plenums, raised floors, or confined mechanical rooms. Their plenum-rated design meets stringent safety standards, making them an ideal solution for integration into modern buildings with rigorous code compliance requirements.
Below are some key features:
Compact Design:
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- Built for compact spaces, which is a significant advantage when installing in areas where space is limited. It’s small enough to fit into confined areas but powerful enough to deliver consistent, effective heat.
- Whether it’s installed in an attic, under a floor, or behind walls, the KBU PlatinumX ensures that temperatures remain regulated without the need for bulky equipment.

Freeze Protection:
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- Specifically designed for freeze protection, meaning it ensures that the temperature in concealed spaces never dips low enough to cause damage to pipes, equipment, or machinery. It can be particularly beneficial in protecting plumbing systems in attics or basements, where freezing temperatures can cause pipes to burst, leading to severe water damage.
- With precise temperature control and consistent output, the KBU PlatinumX provides peace of mind knowing your space is safeguarded against the harsh effects of freezing weather.

Zero Clearance Installation:
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- KBU PlatinumX is rated for zero clearance to combustibles. This means that it can be installed in very tight spaces with little to no required clearance around the unit, which is essential when working with enclosed or concealed areas like crawlspaces, between walls, or even above drop ceilings.
- Traditional heating units often require significant space around them to ensure safety and airflow, but the zero clearance design of the KBU PlatinumX eliminates this concern, making it a perfect choice for installations where space is limited.

Plenum Rated:
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- KBU PlatinumX is plenum rated, meaning it has been designed and tested to meet strict safety standards for use in air handling spaces (plenum areas) of HVAC systems. Plenums are typically spaces used for air distribution within the building, such as in drop ceilings or under floors. These areas are often subject to stringent fire safety codes to prevent the spread of flames and smoke in case of a fire.
- The KBU Platiminum is certified by UL to comply with Standard for Heating and Cooling Equipment ANSI/UL 1995 and CAN/CSA No. 236-05, third edition and meets stringent City of Chicago codes for plenum use.

24V Control – In-Built Stat or Remote Stat:
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- KB PlatinumX features an in-built electronic thermostat for precision temperature control, so you can set your desired temperature, and the unit will maintain that temperature automatically. This feature not only ensures comfort but also helps optimize energy usage, preventing unnecessary heat loss.
- Or connect any 24V thermostat or BMS system to control the heater from any remote location. This level of integration provides users with greater flexibility and control. By connecting to a remote 24V thermostat, you can manage the heater’s temperature settings from a distance, offering convenience and accessibility, especially in larger facilities or hard-to-reach areas.
