Author: Ed Janowiak

We should always avoid oversizing, but it can be even more critical in humid climates where air conditioners operate with a wet coil. However, occasionally, I said yes. But the customer had to agree to a few things first. 

Want to learn when you need to size up or down with ductwork? Learn how to keep the velocity down in this edition of “Hey Ed!”

Trying to find out the proper amount of sag when installing ducts? Find out how to use Manual D in this edition of “Hey Ed!”

Want to find the best velocity moving across a filter grill? Find out what Manual D says about velocity in this edition of “Hey Ed!”

Are there some parts of the country that are so dry they require extra maintenance? Find out about dry sections in this edition of “Hey Ed!”

Want to learn what friction rate really stands for? Find out about the rate of friction in this edition of “Hey Ed!”

Want to learn if a furnace with a three-ton drive can really move three tons of air? Learn more about airflow resistance in this edition of “Hey Ed!”

Want to find out how to size a duct without calculating a friction rate? Find out how to use Manual D to calculate in this edition of “Hey Ed!”

Want to know about Ed’s favorite tool and why? Find out all the benefits of the Digital Hygrometer in this edition of “Hey Ed!”

Want to know the smallest room size that requires a supply? Find out to leverage Manual D in this edition of “Hey Ed!”

Want to know the best duct material to use? Find out how to choose the best product for profitably in this edition of “Hey Ed!”

Want to know how often filters are properly sized? Find out how to make a selection in edition of “Hey Ed!”

What’s the biggest concern when twinning furnaces? Find out when to switch each fan on in this edition of “Hey Ed!”

Trying to find the target velocity for moving across a filter? Find out how to find the target velocity gold standard in this edition of “Hey Ed!”

Wondering if a gas furnace is more efficient than a heat pump? Find out the difference between economics and efficiency in this edition of “Hey Ed!”

Should you install a Heat Pump? Learn about the advantages and benefits of heat pumps in this edition of “Hey Ed!”

Is it permissible to put a return in the bathroom? Find out why it’s not in this edition of “Hey Ed!”

Want find out how to determine the change in enthalpy? Learn more about how to determine cooling capacity in this edition of “Hey Ed!”

Want to learn how to reduce state pressure on an undersized supply? Learn how to add an additional duct in this edition of “Hey Ed!”