Colorado Energy Office: Short building codes training video - HRV vs ERVs

[@villa_grasina]

Really the best explanation HRV vs ERV and the "core-meaning" of ventilation!!! Bravo!

[@MrTenkara]

Can a system like this provide make up air to provide balance with the exhaust fans in other parts of the house?

[@MrTenkara]

Great explanation

[@nedunonnyp704]

hen Exhausting/Supplying from/to more than One Area/Room/Locations, How do you maintain Suction/Supply Air? I Have noticed a Significant drop in Air Suction from Exhaust and Decrease in Supply Air when I "Tee" in to more than One Area. The 6in Ducts drastically drops the air movement after I "Tee" Off into Any Location. How do You Overcome this?

[@slipperyslope3912]

Thanks for actually showing how the core functions.

[@jeffmucha]

You didn’t mention the materials. Paper vs plastic or aluminum? How do I know which one to get? Why do some companies have only HRVs? Can smells transfer across the membrane of an ERV?

[@richcheema]

I would always spend the extra if you can afford it for an aluminium heat exchanger core. Metals have higher heat transfer coefficients than plastic or paper and you'll have greater efficiency. If you have carbon filters inline within your duct work (along with HEPA for particulates) or in the housing then that carbon media will do a good job of removing odor and VOCs like formaldehyde.

[@FirstLast-et3sw]

If the era does everything the Harv does plus remove excess humidity then what’s the point of making hrvs?