Category: Air Side

Calculating Air Flow for Air Handling Units

Calculating Rooftop Unit Air Flow

Tagged with:

Nothing says winter has arrived like a failed heat exchanger…- Part 2; the RAT.

How does low RAT kill a heat exchanger? It cools the heat exchanger, in-turn causing the flue gas temperature to drop below its dew point.

Tagged with: , ,

Causes of High Space Humidity (In no particular order)

There are six primary causes of high space humidity.

Tagged with: ,

Evaporator Coils Part 2: Multi-Circuit Coil Staging

  Questions: You have a two stage coil; what coil section is first stage? What coil section is second stage? Does it even matter? Answers: It depends. It depends. Most of the time. Face-split, row-split or tube-split; they need to

Tagged with: ,

Evaporator Coils Part 1: Multi-Circuit Coil Types

There’s more to a evaporator coil than most realize.

Tagged with: , , , , ,

Do Your Duct Plenums Blow? (Some Pun Intended)

What do frozen DX coils, tripped furnace limits, failed ECM motors, failed heat exchangers, and failed compressors all have in common? Answer: Probably poor plenums. Before you say to yourself; “Self, I don’t need to read this; I know how

Tagged with: , , ,