Are you a homeowner or building manager?
Find a Contractor »

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 There Parts of the Country Where They Have Air So Dry That We Never See Water Collecting in the Drain Pan of the Indoor Coil?

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!”

Hey Ed, What Does Friction Rate Really Stand For?

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

Hey Ed, Will a Furnace With a Three-Ton Drive Really Move Three Tons of Air?

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!”

Hey Ed, Is There a Way to Size a Duct Without Calculating a Friction Rate?

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!”

Hey Ed, What’s Your Favorite HVAC Tool and Why?

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!”

Hey Ed, What’s the Smallest Size Room That Requires a Supply?

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

Hey Ed, What Is the Best Duct Material to Use?

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!”

Hey Ed, How Often Are Filters Sized Properly?

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

Hey Ed, What Is Your Biggest Concern About Twinning Furnaces?

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

Hey Ed, What Is the Most Appropriate Velocity Moving Across a Filter? 

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!”

Hey Ed, Is a Gas Furnace More Efficient Than a Heat Pump?

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!”

Hey Ed, Should I Put in a Heat Pump?

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

Hey Ed, Is It Permissible to Put a Return in the Bathroom? 

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

Hey Ed, What Is This Change in Enthalpy Malarkey You Were Mumbling About?

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

Hey Ed, Should Duct Be Added to an Undersized Supply to Reduce Static Pressure?

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!”

Hey Ed, How Are Intermittent Loads, such as a Range Hood, Accounted for in Manual J®?

Want to learn how to account for range hood loads in Manual J? Learn how to approach load ventilation in this edition of “Hey Ed!”

Hey Ed, How Does an Electronic Thermostat Work?

Want to familiarize yourself with how an electronic thermostat works? Learn how an electronic thermostat detects temperature in this edition of “Hey Ed!”

Hey Ed, How Do You Measure a House for a Load Calculation?

Want to learn how to measure a house for a load calculation? Learn how to measure block loads in this edition of “Hey Ed!”

Hey Ed, When Do You Use Solvent?

When do you use solvent? Find out the proper way to use solvent in the edition of “Hey Ed!”

Hey Ed, What’s the Difference Between Manual J® and Manual JAE®?

In this edition of “Hey Ed”, Ed goes over the differences between Manual J and Manual JAE, and their intended uses.

Looking for an ACCA QA Accredited Contractor?

Are you a homeowner or building manager?

BECOME AN ACCA MEMBER

join now

PLUS It's Risk Free!