How to get fresh air and save energy?

[@yahtadi5152]

Any evidence before after in real life?

[@duncanreign8744]

how its different from hvac

[@anaktuhan3509]

How if outside the house is hotter than inside?

[@argasatriyaputrasiwi2987]

A breathing system of a fan 😮😮😮

[@daleb5967]

Hot air going away is hot air thrown away. Open a window and close it, same loss. Made up with furnace

[@khosoobuinjargal1485]

how much

[@holtopfreshair]

Please visit this website for more detailed information about the product: www.holtop.com/eco-pair-single-room-energy-recovery-ventilator-erv.html. If you have any further questions, you can send an email to [e-mail]. We would be more than happy to assist you with any inquiries you might have.

[@CheMathiewNgayihiAbbe]

Modified exhaust fan

[@nelsondog100]

Some people will believe anything! Hahahaha

[@Soul-yx9if]

If it has plastic parts, most likely it will send micro plastics in the air.