Suncourt HC300 Heating & Air Conditioning Booster Fan

Based on the other reviews, it sounds as though the EQ2 works for some people and doesn't for others depending on their individual room and HVAC configurations. I have an upstairs room with a vaulted ceiling that is 10 degrees Fahrenheit hotter or colder than the rest of the house. The room is more than 200 sq. ft., has only one vent, and is the farthest from the blower. I've had my EQ2 now for 3 years and it is still working fine. The EQ2 brings the temperature difference down to about 4 degrees, which is livable. I tried out the AirFlow Breeze that has 2 DC fans in it but it didn't work as well as the EQ2.

Yep, I gotta agree with the other reviewers that this is a waste of money. Great concept, poorly executed. It does turn on and off automatically, but that's it's only good point.

I have an upstairs bedroom that gets about 5-6 degrees warmer than the rest of the house. Warmer even than the adjacent bedroom. Put one of these over the vent, checked the temperature all day, and there was no difference. I think most computer fans are probably quieter and blow more air. All this seems to do is churn the air around a bit.

While I'm not a mechanical engineer, I think this product could have been designed better, without adding cost, and actually might have worked.

Save your money. If you have a vent that's not vlowing much air, try removing the grill. The grill restricts the airflow and removing it might be enough to help.

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Like everyone else I have a room that doesn't get the benefit of enough heat. Is is fed by a side duct off the main furnace duct really a bad design because the heat on its way up three flights races past this duct and even a scoop doesn't cure the 5 degree deficit. I put this fan over one of the two outlets for this side duct, AND BLOCKED THE OTHER to prevent the fan from just pulling air from the other vent. It now has to pull from the furnace and the 5 degree difference disappeared. It is also on a thermostatic control.

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Works as advertised. My family recently moved into a 2-story colonial, and the airflow coming out of the vents in the master bedroom is a little weak, making it warmer than the rest of the bedrooms on the top floor. I could turn down the thermostat, but that would freeze out the rest of the house. The Suncourt (HC500) and Airflow Breeze boosted registers caught my eye, but I wanted a quick solution (i.e. no order-and-wait) and the local Home Depot had the HC300 in stock.

What can I say, but "it works". Without the HC300, the airflow (floor vents shooting upward) reached a height of 3 ft (based on holding my hand above the vent), and with the booster, it reached a perceptible height of 5 feet. With a single booster over 1 of our 2 vents, the master bedroom was noticeably cooler. In fact it worked so well that I ordered two in-vent boosters (HC500) so that I have one for each duct. The weather has cooled down, so I'm unable to compared those to the HC300, except that they are quieter.

As far as noise goes, the HC300 is not silent, but it is far quieter than a Marpac white noise machine set to the lowest setting (we use that in our baby's room). Actually, for use in a bedroom, I find the low level of white noise kinda soothing. As an added bonus, the fan in the booster doesn't turn off until the air temperature from the ductwork reaches a preset temperature. That means that after the AC (or heat) has turned off, the booster is still scavenging the remaining cool (or warm during the winter) air from the ductwork.

This is a great solution if your airflow to a room is weak, but I can imagine some circumstances (strong airflow, but warm air) where boosting the airflow won't help or you'll have a ceiling effect. Yes, you ideally would want to call in a professional to rebalance the ductwork, but in many instances it would be cost prohibitive (i.e. ripping up flooring to get to the ductwork).

I give it a 4 out of 5, with 1 point deducted for the (albeit low) noise level.

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I bought two register boosters several years ago and one of the two recently stopped working; could not be repaired by my engineer husband. No longer carried at local store so I ordered two online. We use them on the second floor of our home to boost heat in the winter and A/C in the summer and they work very well. Hope neither of the new ones ordered via Amazon fail!