Category Archives: HVAC Posts

The VRF Checklist

By Kevin Angle, PE If you’re anything like me, you are constantly making lists, whether it be a grocery list, materials list, or to-do list to make sure everything gets done. In my opinion, lists are one of those “necessary evils.” They can seem aggravating at times because, let’s face it, the entire list rarely […]

VRF Infographic

JDB Engineering just published a new infographic about Variable Refrigerant Flow (VRF) systems: overview, applications, sustainability, ideal building types, advantages, and disadvantages. Check it out: Interested to learn more about VRF Systems? Contact Timothy A. Warren, PE, LEED AP, president of JDB Engineering, Inc. Also check out Kevin Angle’s blogs, When Do Variable Refrigerant Flow […]

Electrical Considerations for Variable Frequency Drives (VFD)

By Craig G. Malesic, LC, PMP, EIT with Brian E. Pitzer, PE and Rich M. Lindemon, PE, LEED AP Variable Frequency Drives (VFD) are commonplace in the design of mechanical systems. Where “VFD” is the most common terminology used, they are also called adjustable frequency drives, variable speed drives, and AC drives. Their primary use […]

Putting the "V" in "HVAC": Ventilation

By Richard M. Lindemon, PE, LEED AP Most people are familiar with the abbreviation “H-V-A-C,” whether in full detail or nothing beyond reciting the four letters in succession. Sometimes people try to pronounce it as a two-syllable acronym, “H-VAC,” which may be as divisive as you can get among those in the trade! Still, others […]

Bigger Isn't Always Better! Why Oversizing Packaged DX HVAC Equipment Isn't a Good Idea

By Rich Lindemon, PE, LEED AP It is very easy to fall into the trap of thinking that bigger is better when you consider something that you like or enjoy or that benefits you and those around you.  That super-sized value meal with the extra-large fries and drink must be better than the regular sized […]

Trying to Reduce Energy Consumption in Your Plant? Check These Two Important Components

By Timothy A. Warren, PE, LEED AP BD +C Continuing our conversation on industrial energy reduction that started here, we will discuss energy reduction for compressed air and pumping systems. Compressed air. This is probably the most expensive form of energy used in an industrial plant because of its poor efficiency – with an efficiency […]

Reducing Energy in Industrial Facilities

By Timothy A. Warren, PE, LEED AP BD+C The variety of systems and user requirements associated with manufacturing facilities present many challenges, one of which is energy reduction. With these challenges there is opportunity to be creative to find economical and efficient systems that will serve companies well for many years. Design professionals have a […]

When Do Variable Refrigerant Flow (VRF) Systems Make Sense?

by Kevin G. Angle, PE, LEED Green Assoc. Having three young children at home, I hear all kinds of music in the car and in the house. Lately, my kids have become excited when Meghan Trainor’s “All About the Bass” comes on the radio – I regularly listen to all three of them in the […]

The Case for Commissioning

By Timothy A. Warren, PE, LEED AP BD+C When Owners look at project design fees, they often compare the design fee to the overall cost of construction.  While this comparison may be useful for some general benchmarking, the reality is that the overall operations and maintenance cost for a building dwarfs both the cost to […]

Sustainability: Reduce Before You Replace

By: Timothy A. Warren, PE, LEED AP A common misconception is that building energy use can be optimized by replacing aging, inefficient HVAC and electrical equipment with modern, more efficient models. While replacing equipment can provide energy savings, true energy optimization can only be achieved through an integrated approach that will first promote a reduction […]