Author: Ed Janowiak

Acknowledging shade is a big part of doing a load calculation. Sometimes it’s done correctly and sometimes it’s done incorrectly. The more accurate we are with our inputs the more predictable our results will be. There are hard and fast rules that should be followed in Manual J. Some of the more important ones are discussed in this article.

Do you look forward to checking a heat pump’s performance in the winter? Do you have a routine that you rely on? We are going to walk you through a process that gives a good indication of whether the system is doing what it is supposed to be doing, or not. The best part is you don’t have to buy any special tools and the process is easy, it just requires some simple math.

From thermal heat pump balance points to economic, ACCA HVAC expert Ed Janowiak explains all you need to know about balance points.

Between stay-at-home orders, supply chain disruptions, labor shortages, and constantly changing customer concerns, 2020 was a tumultuous year for HVAC contractors. But what do the numbers show about COVID’s impact on their bottom line? And how do they expect to fare in 2021? Continue reading to learn more.

Find out when 400 CFM per ton is proper airflow, and other helpful airflow tips from ACCA HVAC expert Ed Janowiak.

Find out why HVAC technicians’ rules of thumb must be based on math, not something made up or convenient, from ACCA HVAC expert Ed Janowiak.

Learn the fundamentals of how HVAC equipment functions and where to obtain this information to eliminate potential problems in the field.