Hey Ed, should all condensation lines be insulated?
In this edition of “Hey Ed,” Ed discusses if condensation lines be insulated.
Author: Ed Janowiak
Ed Janowiak is ACCA's Manager of HVAC Design Education and can be reached at ed.janowiak@acca.org or 703-824-8878.
Hey Ed, are the capacities in the AHRI ratings good for anything.
In this edition of “Hey Ed,” Ed discusses if the capacities in the AHRI ratings are good for anything.
Hey Ed, should the suction line of an operating air conditioner be sweating?
In this edition of “Hey Ed,” Ed discusses if the suction line of an operating air conditioner should be sweating.
Hey Ed, does beer can cold really work?
In this edition of “Hey Ed,” Ed discusses if beer can cold really works.
Hey Ed, is there a big difference between R-454B & R32?
In this edition of “Hey Ed,” Ed discusses the difference between R-454B & R32.
Hey Ed, what install techniques have you changed when installing A2L refrigerants?
In this edition of “Hey Ed,” Ed discusses A2L installation techniques.
Hey Ed, do A2Ls cool as well as A1 refrigerants?
In this edition of “Hey Ed,” Ed discusses A2L vs. A1.
Hey Ed, Is taking static pressure measurements a good indication of a system’s airflow?
In this edition of “Hey Ed,” Ed discusses if taking static pressure measurements is a good indication of a system’s airflow.
Hey Ed, Are there ways to judge the performance of a system and prove these results to the consumer?
In this edition of “Hey Ed,” Ed discusses ways to prove system performance to a consumer.
MEMBER EXCLUSIVE
Login to access this member exclusive. Not a member? Join now!
I know I’ve said this a lot: A duct can’t be too big. But something can…
There’s a common misconception in the field that duct sizing is mostly about “keeping ducts small to keep the air moving.” You’ve heard it: “Smaller ducts make the air go where it’s supposed to.” But the truth is, as ACCA Manual T® makes clear, air distribution isn’t about how fast you can shove air through an airway — it’s about delivering the required volume to the supply register.
Hey Ed, is measuring wet bulb ΔT always necessary when checking a system?
In this edition of “Hey Ed,” Ed discusses measuring wet bulb ΔT when checking a system.
Hey Ed, when measuring dry bulb ΔT, is adding volume to the equation a better indication of system performance?
In this edition of “Hey Ed,” Ed discusses measuring dry bulb ΔT and system performance.
Hey Ed, is a dry bulb ΔT a good indication of system performance?
In this edition of “Hey Ed,” Ed discusses the connection between dry bulb ΔT and good system performance.
Hey Ed, Does the air contain less moisture, even though the relative humidity goes up after the air moves across the evaporator coil?
In this edition of “Hey Ed,” Ed discusses relative humidity across evaporator coils.
Hey Ed, is 400 CFM always the correct airflow?
In this edition of “Hey Ed,” Ed discusses the correct airflow.
Hey Ed, What’s the difference between 100 CFM coming out of a metal duct or a flex duct?
In this edition of “Hey Ed,” Ed discusses the difference between a metal duct and a flex duct when 100 CFM is going through it.
Hey Ed, Does the new Manual S® still have a path to size based on AC requirement?
In this edition of “Hey Ed,” Ed discusses the path to size based on AC requirement in Manual S.
MEMBER EXCLUSIVE
Login to access this member exclusive. Not a member? Join now!
Can you trust ChatGPT?
I have mixed feelings about ChatGPT — so I asked it directly. ChatGPT said: That’s a fair and important question. The honest answer is: you can trust ChatGPT for many things, but not everything. Here’s a breakdown:
Hey Ed, does the new Manual S® have a lot of changes?
In this edition of “Hey Ed,” Ed discusses the latest changes to Manual S.
