Author: Ed Janowiak

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!”

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

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

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

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

Curious about what size you need for different pipe sizes? Learn how to determine and calculate hose size in this edition of “Hey Ed!”

Wondering if a system can hold a 500-micron vacuum of there’s moisture in the system? Learn when a system can hold a vacuum in this edition of “Hey Ed!”

Wondering what the difference between sensible heat ratio and sensible heat factor is? Learn how to use Manual S to find out in this edition of “Hey Ed!”

What’s the main problem when we make up a friction rate. Learn more about determining adequate airflow in this edition of “Hey Ed!”

Why is Manual S® Ed’s favorite manual? Learn about the importance of residential equipment selection in this edition of “Hey Ed!”

How do you describe electronically commutated motors Learn the difference between a constant torque and a constant air-flow in this edition of “Hey Ed!”

In this edition of “Hey Ed”, Ed discusses the difference between taking static pressure measurements on a new versus existing […]

What should you do if you can’t find the filter’s performance data? Find out what to do and in this edition of “Hey Ed!”

Should you take supply air measurements for discharge air temperature or relevant humidity? Learn how to get the best reading in this edition of “Hey Ed!”

Electrification and heat pumps are coming, and with them, many HVAC problems to look out for. Read this blog to learn more about heat pumps.

Want to know how to estimate latent capacity based on water coming out of the drain? Find out how to calculate latent capacity in this edition of “Hey Ed!”

Should you use different outdoor design conditions if you live on a heat island? Find out how to utilize Manual J in this edition of “Hey Ed!”