0ur opinion:

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Buyer's feedback: - * COOL baby!! BEST purchase I've made all year! ...
Ok, so I live in a typical small, 3BR, midwest split level home built in the 70's. Probably everyone who's ever lived in one of these (LOTS of you)will probably agree that the upstairs is ALWAYS hotter in summer and cooler in winter - especially the smallest BR - am I right?

In the past 4 years, we've spent TONS of $ installing a new furnace, a new air conditioner and a whole house fan in the attic, trying to improve the circulation.

While all of these helped (& of course have lowered my energy costs), NOT ONE made such a marked drastic improvement in the room temp as this little gem.

I love it, my baby who sleeps in that room loves it - it works great and I think the peeps who disagree might have unrealistic expectations of it.

I do have one concern about the safety of it - the fan is recessed down into the vent, but I still think my son could reach his fingers down to it - he's shown an interest. Babies are very curious and not too smart. When he's playing on the floor in his room, I always make sure its turned off.

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Buyer's feedback: - Excellent Improvement
I installed these in my up stairs rooms that were poorly heated/ac and it made a big difference. It also helps to close off or reduce air volume on other vents where you have rooms you don't use as much.

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Buyer's feedback: - * It doesn't produce the boost ...
First it took longer to receive the item than expected from the seller. Then it does not produce the boost which the product description promised.

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Buyer's feedback: - Not what I thought
Although this product works, it takes a lot of "fiddling with" to reach the right temperature to kick it on. A lot of trouble for such little results.

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Buyer's feedback: - * Totally Useless ...
Small ineffective fans. After installation, there was less cold air flowing from the a/c duct than before. The only reason I awarded it 1 star, was because Amazon doesn't give you a ZERO star option.