Author: Ed Janowiak

In the HVACR industry, it’s all too common to hear comments about ductwork being too big or too small based solely on appearance. Similarly, there are far too many comments that a system will never condition a space properly just by looking at it. While everyone is entitled to their opinion, there is a significant difference between opinions based on expectations and those grounded in precise measurements.  

It’s no secret that for many years I’ve been talking about four things that we must do to a system that has already been installed. Let’s talk about them!

Last month, we covered the expectations of a few different groups on the results that come from performing a Manual J® calculation. This topic garnered some great responses from members, and one of those comments sparked the idea behind this article. This month, we’ll address how homeowners perceive what we do and how we can move things in our favor. ACCA members can read more here.

You might hear that there’s nothing wrong with Manual J®, but you might also hear people complain about it. This group is very adamant about how badly Manual J® oversizes the heating plant requirement. ACCA members can read more from Ed Janowiak here.