New technology profiles

02.06.14 | Modulating ventilation in high outside air ventilation applications requires controls that can determine whether the air change rate can be lowered when a space is unoccupied or increased when contaminants are found in the air. These controls can...
02.06.14 | VRF technology has been available in global markets (Europe, Asia) for some time. Until recently, there has been little interest in VRF technology in North America. Multiple forces, including reductions in the environmental impacts of refrigerant,...
01.13.14 | SZVAV technology has been on the market for sometime; however, until recently this technology has been limited to the largest single-zone applications. These typically included school gymnasiums and auditoriums. Because of increased interest in...

Initiatives

04.08.15 | Energy savings and lessons learned from observed, practical approaches to demand control ventilation Demand control ventilation (DCV) systems use sensors — generally either CO2 or occupancy sensors — to estimate the actual number of people in an...
02.25.15 | Application of air source variable refrigerant flow in cold climates Variable refrigerant flow (VRF) systems use variable speed, split heat pumps to provide space heating and cooling to a building's conditioned areas. Air source VRF systems perform...

Publications

04.07.17 | RTUs are used in more than one third of U.S. commercial buildings, the highest of any cooling equipment type. Why? They are reliable and have a low capital cost, as well as established service and distribution networks. There is anecdotal evidence,...
12.18.15 | Variable Refrigerant Flow (VRF) systems have developed into a promising emerging technology. While popular in some places in the world, these systems are quite new to the upper Midwest. The systems are an innovative version of a simple split system...
07.07.15 | This white paper outlines the optimal control strategies for designing and operating air source VRF systems in cold climates.
04.27.15 | Summary of findings from a field study of DCV system performance.
04.21.15 | Demand control ventilation (DCV) systems use sensors—generally either CO2 or occupancy sensors—to estimate the actual number of people in an area and supply only as much ventilation air as is needed at a given time. DCV has the potential to save a...
06.03.14 | This presentation explored quality installation and maintenance practices for residential central air conditioning and air source heat pump systems in Minnesota. It covers key technical aspects of ensuring optimal system performance from new and...
09.20.12 | The Energy Center of Wisconsin with assistance from the University of Wisconsin Solar Energy Laboratory studied three working hybrid system installations to compare their economic and environmental impacts with other HVAC systems.
09.20.12 | Study establishes a baseline of energy efficiency attitudes and practices among Wisconsin's HVAC contractors. Based on interviews with 95 HVAC contractors in five areas of Wisconsin.

Videos

12.19.13 | Frank Greb and Scott Hackel share the vision for our new space and give a brief technical overview of the HVAC system (including variable refrigerant flow geothermal) and lighting/daylighting strategies.

Webinars

07.03.18 | Did you know Wisconsin recently joined Illinois and Michigan as states in the Midwest to implement the International Energy Conservation Code (IECC) 2015 version? This brings many changes and additions to the previous energy code such as equipment...
03.02.18 | This session explores both ductless and ducted mini splits, with a focus on the latter. Performance and operation for cooling and heating is discussed, with a focus on cold climate heat pump operation. Case studies on basic installations for older...
05.22.17 | Due to circumstances outside of our control, we have to cancel the upcoming webinar Optimal cleanroom ventilation with Craig Bahr on June 22 at noon Central. Thank you for your interest and please stayed tuned for future opportunities. Check out our...
01.26.17 | RTUs are used in more than one third of U.S. commercial buildings, the highest of any cooling equipment type. Why? They are reliable and have a low capital cost, as well as established service and distribution networks. There is anecdotal evidence...
08.26.16 | As a result of this video series, you will be able to: Explain what goes on in a boiler when heat energy is applied. Describe how boiler heat is transferred, as well as the importance of the respective (heat transfer) surfaces and their operational...
01.21.16 | Learn how to add value to one of the largest purchases of your life, your home, through energy upgrades that also enhance comfort. In addition, take a look at various green certifications and how they provide a roadmap toward the pursuit of a...
10.14.15 | As a result of this webinar, you will be able to: Discuss various types of VRF systems. Identify VRF energy improvement opportunities. Analyze and identify the proper applications for VRF systems. Describe real-world examples of VRF systems in...
09.17.15 | As a result of this webinar, you will be able to: Explain the function of a cooling tower Describe the components of a cooling tower Specify the critical steps for maintaining a cooling tower Understand the operational importance of properly...
03.12.15 | Ventilation systems in commercial buildings deliver a constant flow of fresh air to occupants. These systems assume full occupancy, all the time—but buildings are rarely full. Demand control ventilation (DCV) adjusts the amount of fresh air...
03.31.14 | AS A RESULT OF THIS WEBINAR YOU WILL BE ABLE TO: Understand the resources available for tracking building performance. Describe examples of HVAC and lighting operational practices that can lead to improved performance. Discuss methods for testing...
03.31.14 | As a result of this training you will be able to: Explain the RTU related requirements of the IECC. Select the appropriate RTU accessories to maximize performance and efficiency. Describe the newest energy savings RTU option of multi-speed fan...
12.17.13 | Ventilation is an important part of making a building safe and comfortable, but it can require a significant amount of energy to properly condition that air. In this webinar, we will discuss dynamic ventilation control strategies to vary the amount...
09.24.13 | Drain water heat recovery systems can save a significant amount of energy in the right setting. In commercial building retrofits the technology can be a challenge, but new construction applications show promise for easier installation. Join us to...
12.12.12 | As a result of this presentation, you will be able to: Explain the driving forces behind air, heat and moisture movement Identify heat and moisture transfer mechanisms Describe what creates an effective thermal boundary Specify building details...

HVAC