Iowa Association for Energy Efficiency


The Iowa Association of Energy Efficiency (IAEE)
The Iowa Association of Municipal Utilities (IAMU)

Presents a Webinar Series Titled:

Energy Efficient Building System Solutions for Pathogen Reduction (COVID-19, Legionella and Molds)

As pandemic restrictions subside and more people begin the return to public life and public workspaces, building owners, operators, energy managers, and occupants are confronted with the challenge of an increased need to ensure safe, healthy, and comfortable indoor environments. The IAEE and the IAMU have partnered to provide a series of webinars that address energy efficiency and building systems solutions to combat the challenges of COVID-19 and other indoor air quality and general pathogen concerns. IAEE and IAMU are offering four, 1-hour online sessions conducted over 4 weeks, free of charge.  Attendees will have the opportunity to earn up to four continuing education units on a host of topics. Each session is offered twice so you can select the date that works best for you. More details about each session are provided below. We hope that this series will provide you a foundation to build on as we work to address energy efficiency and decreased pathogen levels in our work environments.


Session 1: Ultraviolet Light Germicidal Irradiation

June 23rd at 10:00 AM  View Recording

June 24th at 1:00 PM  View Recording

This presentation addresses how ultraviolet light systems can contribute to the reduction of COVID-19 and other viruses and bacteria within buildings. Attendees will develop an understanding of the development of UV systems, how they contribute to improved indoor environmental quality, and different applications of the technology. The presentation will also address odor control and pathogen alert monitoring.

Learning Objectives:

  1. The History of UVC; also known as UVGI, Ultraviolet Germicidal Irradiation
  2. The Science of UVC
  3. ASHRAE identified primary controls for infectious pathogen reduction and coil cleaning
    a. Upper Air Systems
    b. Portable or Fixed, In-Room Surface Irradiation Systems
    c. In-duct AHU coil cleaning installations for improved IAQ, energy savings and/or airborne pathogen reduction
  4. Selecting a non-proprietary, UL approved system and case studies/findings on UVGI installations, odor control and pathogen alert monitors (commercial applications information)

Session 2: Efficient Water Heating Solutions for Building Heat and Domestic Hot Water

July 14th at 10:00 AM  View Recording

July 15th at 1:00 PM  View Recording

Water heating solutions are critical to controlling the proliferation of infectious disease and bacteria. This presentation addresses how condensing water heating systems can provide better water heating capacity while improving efficiency performance.

Learning Objectives:

  1. Condensing Equipment efficiency
    a. External Variables that cause faults and lower efficiency
    b. Design considerations to ensure systems condense
    c. The benefits of combustion precision
    d. How AHRI calculates boiler efficiencies
    e. The effects of return water temperatures on condensing
    f. Why some heat plants require more pump horsepower, more piping or larger piping than others. (Is this being reflected in the boiler price?)
    g. Fire-tube vs. Water-tube Equipment (one size does not fit all)
    h. Efficiency gains from dual return boilers
    i. Converting to hot water from steam
  2. Primary-Variable Piping vs. Primary Secondary Piping configurations
    a. When should a boiler plant and domestic water operate together?
  3. Calculating the cost avoidance when replacing the heat plant
  4. Instantaneous Domestic Water Heaters (Plate and Frame and Gas Fired Condensing Equipment) for Domestic Water Production to avoid Legionella concerns
    a. Indirect Steam-to-Water Domestic Water Production
  5. Gas appliance ventilation categories overview and vent materials for condensing equipment
  6. Connectivity to your boiler and domestic water plants
  7. Predictive, Preventive and Corrective Maintenance of the Boiler Plant

Session 3: Cooling Towers Solutions to Combat Microbial Growth

July 21st at 10:00 AM  View Recording

July 22nd at 1:00 PM  View Recording

Cooling tower design and system maintenance play a significant role in reducing the growth of bacteria and play a significant role in preventing Indoor Air Quality (IAQ) issues. This presentation will cover cooling tower systems basics, materials of construction, design considerations and how systems can reduce or prevent the growth of legionella bacteria.

Learning Objectives:

  1. Cooling Tower Basics
  2. Closed Circuit Systems
  3. Understanding the types of towers available
  4. The “Parts” of a Cooling Tower
  5. Materials of Construction for Towers
  6. The sizing and selection of cooling tower systems
  7. System accessories to consider during design
  8. Cost of the Tower (Equipment and Labor Cost)
  9. Avoiding Legionella: This presentation provides information about towers constructed of High Density Polyurethane (HDPE) and how an HDPE tower’s shell material can be used in mitigating legionella bacteria. The CDC reports from 2000 to 2015 the number of cases of legionella deaths nearly quadrupled.  Therefore, mitigating as many growth sites for Legionella Bacteria should be a priority to medical facility, building operators and consulting engineers. 

Session 4: Fresh Air Solutions to Combat Transmission of Infectious Disease

September 22nd at 10:00 AM  Register Now

September 23rd at 1:30 PM  Register Now

Dedicated Outdoor Air Systems (DOAS) play a significant role in increasing IAQ and Energy Recovery. As buildings reopen, an emphasis is placed on reducing exposure to disease, including viruses and bacteria, through increased outdoor air volume. This presentation will introduce attendees to DOAS systems, discuss the types of equipment, and typical applications for the system.

Learning Objectives:

  1. Dedicated Outdoor Air Systems (DOAS) and How they Work
  2. The History of DOAS
  3. Types of Equipment
  4. Why select DOAS for your building
    a. Indoor Air Quality
    b. Energy Recovery
    c. Benefits
  5. Typical Applications & Features


Bruce Greiner: Bruce has held positions with the State of Iowa as the Deputy Director of The Office of Energy Independence and as the State’s Procurement Chief Operating Officer. Bruce also directed facility, construction and operations at the Iowa City CSD, West Des Moines CSD, Polk County General Services and the State of Iowa Capitol Complex. After more than 27 years in public sector operations and management, Bruce joined VHF Sales, Inc. Bruce is responsible for training and marketing for VHF Sales, Inc.; a manufacturer’s representative firm specializing in HVAC and plumbing equipment solutions which enhance facility management excellence! Bruce is a board member for the Iowa Association of Energy Efficiency and a past President of the ISBGA. He has held the designation of Certified Facility Manager (CFM), IFMA. His favorite off-work activities include supporting the church, family activities, rehabbing houses, working on his Aronia orchard and raising honey bees.

VHF Sales, Inc. actively participates in the following Associations:

  • Iowa Association of Municipal Utilities, IAMU
  • Iowa Academic Physical Plant Association, IAAPPA
  • Master Builders of Iowa, MBI
  • American Society of Heating, Refrigeration and Air Conditioning Engineers, ASHRAE
  • Iowa Association of Energy Efficiency, IAEE
  • Go Green Iowa Mechanical Engineer Training Series
  • Iowa School Buildings and Grounds Association, ISBGA
  • Association of Building Contractors, ABC
  • Iowa Geothermal Heat Pump Association, IGA
  • Iowa Hospital Association, IHA
  • Iowa Lodging Association, ILA


Training Provided by:
VHF Sales, Inc., Grimes, Iowa
Phone: 515-986-3671
Base Territory Covered: Iowa, Nebraska, Hawaii and the Quad Cities

© 2020 Iowa Association for Energy Efficiency. All rights reserved