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High-Efficiency HVAC Solutions for Commercial Buildings
Looking to cut HVAC energy costs, enhance energy recovery, reduce carbon emissions, and eliminate maintenance headaches? ACT has the solution. Our passive Heat Pipe Heat Exchangers offer a smarter, more efficient alternative to mechanical energy wheels, delivering up to 70% energy savings with a typical payback period of just two years. With no moving parts, our passive heat pipe technology maximizes HVAC energy recovery and efficiency—eliminating the need for motors, belts, and bearings, while reducing maintenance requirements.
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Energy Recovery wheels have inherent limitations that can impact air quality, system design, and maintenance costs:
But there’s a better way. ACT’s Passive Air-to-Air Heat Pipe Heat Exchangers solve these issues. They eliminate cross-contamination. They offer flexible system design. And they require zero maintenance. The result? Significant cost savings and improved reliability.
Beyond these key benefits, ACT brings extensive expertise across a broad range of HVAC systems, from retrofitting existing setups to new construction and long-distance applications (up to 300′). Our solutions include both passive and pump-assisted HVAC systems, enhanced de-humidification projects, and designs that support LEED and green building certifications. We also provide advanced thermal management for hyper-scale and co-located data centers, as well as mobile edge computing.
When 3M needed a more efficient way to manage humidity and temperature in their cleanroom, they turned to ACT’s Wrap-Around Heat Pipe (WAHX) technology. By enhancing de-humidification and reheat efficiency, ACT helped 3M reduce cooling loads, lower energy costs, and improve indoor air quality, all while maintaining strict environmental control.
Discover how ACT’s energy recovery solution optimized 3M’s cleanroom HVAC system and how it can work for you.
We offer two distinct heat pipe heat exchanger designs, each available in a variety of configurations to meet diverse application needs.



Split Airstream Solutions | Horizontal or Vertical Installation
Our Air-to-Air heat exchangers (AAHX) use a series of heat pipes to transfer energy between the outgoing exhaust air stream and the incoming air stream. The cool (summer) and warm (winter) air leaving the building is used to pre-cool or pre-heat the incoming outside air.



The Wrap-Around (WAHX) system includes a pre-cool and reheat coil connected by heat pipes around an existing air handler’s cooling coil. It enhances de-humidification and reheat efficiency, improving indoor air quality while reducing energy costs. By minimizing the need for gas or resistive heating, it supports precise temperature and humidity control, making it ideal for applications requiring optimal climate management.
Our R&D engineers work side-by-side with HVAC teams when standard energy recovery solutions aren’t enough. Watch how we engage early to explore new thermal architectures, test ideas, and prototype solutions that cut energy use, boost IAQ, and meet tightening carbon regulations.
Whether for new construction or retrofits, ACT partners with you from design to manufacturing and installation to deliver a high-performance, energy-savings HVAC system.
Configure your ideal, energy-efficient AAHX or WAHX system with our free, easy-to-use online selection tools. Click here.
Explore our comprehensive collection of resources dedicated to advancing HVAC energy recovery. Here, you’ll find insightful blogs, informative videos, detailed articles, and more—all focused on innovative thermal management solutions for energy-efficient HVAC systems. Whether you’re looking for technical papers, industry trends, or expert insights, our resources are designed to keep you informed and help you optimize indoor air quality, improve de-humidification, and reduce energy costs.
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