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.
Technical Tips
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.
Matt, how can voltage drop across electrical components lead to system malfunctions?
In this edition of “HVAC Skill Builder,” Matt discusses HVAC system malfunctions caused by a voltage drop across the electrical components.
MEMBER EXCLUSIVE
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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® address sizing heat pumps for heating?
In this edition of “Hey Ed,” Ed discusses sizing heat pumps for heating using the updated Manual S®.
Hey Ed, when can we start using the new Manual S®?
In this edition of “Hey Ed,” Ed discusses when its appropriate to start using the updated Manual S.
Matt, how does the placement of a thermostat affect system performance and customer comfort?
In this edition of “HVAC Skill Builder,” Matt discusses how the placement of a thermostat can effect system performance and customer comfort.
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.
Hey Ed, why does Manual J® use one person per bedroom plus one in the data collection part of the survey?
In this edition of “Hey Ed,” Ed discusses the Manual J calculations for bedrooms.
Matt, what are the signs of a dirty or clogged evaporator coil, and how does it affect system operation?
In this edition of “HVAC Skill Builder,” Matt discusses the negative effects of a dirty or clogged evaporator coil on the overall operation of an HVAC system.
Hey Ed, does placing the outdoor unit for a HP or CAC under the house make sense if there is enough clearance above for airflow?
In this edition of “Hey Ed,” Ed discusses placing an outdoor unit under the house.
MEMBER EXCLUSIVE
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Dew point: The fast, field-ready way to spot moisture and performance issues
When ducts are sweating and customers complain about feeling sticky despite running the AC, the dew point gives you the answer.
Hey Ed, should we try to place the outdoor unit for a HP or CAC in the shade?
In this edition of “Hey Ed,” Ed discusses placing an outdoor unit in the shade.
MEMBER EXCLUSIVE
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Why are dehumidifiers in the basement if moist air is lighter than dry air?
If moist air is lighter than dry air, basement dehumidifiers seem to defy basic physics. A contractor’s simple question reveals a complex building science principle in this members-only exclusive.
Matt, what are the effects of a leaking refrigerant line on system efficiency and cooling capacity?
In this edition of “HVAC Skill Builder,” Matt discusses HVAC system efficiency and cooling capacity with a leaking refrigerant line.
Hey Ed, are returns required in every room?
In this edition of “Hey Ed,” Ed discusses Manual D’s requirement of an uninterrupted path for the air to come out of a supply outlet and get back to the fan.
Hey Ed, is all air standard?
In this edition of “Hey Ed,” Ed discusses the weight of a cubic foot of standard air.
Shift to the Future recap: AI is here! What should I do and not do with it for my business?
Missed this episode of Shift to the Future? We have you covered. In Episode 4, AI is here! What should […]
