760-CFM in-Line Fan, 10-Inch

here is nothing to dislike about a well made problem solver. However mating a device wanting a 10-inch round duct into a 6 x 13 inch rectangular duct requires a lot of imagination and work (two full days). The problem was made more difficult by the small space between the furnace plenum and the upward turn of the duct into a wall, as shown in the first picture. Ultimately both sides of the duct were adapted to 10 x 10 inch square openings terminated in square plates having round holes matching the blower. The downstream end of the blower was inserted through the 10-inch round hole and the upstream end was pop riveted to the upstream plate with its 8-inch round hole.The duct ultimately forks to serve three 6 x 6 ducts to bedrooms far from the furnace over an unheated garage. The bedrooms have been cold for 4+ decades despite attempts to redirect air to them by furnace blower speed and register closures. No longer. At full voltage the in-line air flow is now enormous, even drafty, at distances from the bedroom registers, with some bedroom wind noise and a vibratory hum at the furnace. Reducing voltage with a variac brings both air speed and noise concerns down to acceptable levels. I'll make a decision on final voltage level to the blower after I get further into the heating season. It appears likely that it will be run at about 70 volts with power consumption of about 85 watts. At that level the sound of the in-line blower cannot be heard over that of the furnace ID fan and its circulator, which is exactly the reason for an oversized in-line blower in the first place. As in a previous application of their 6-inch blower in another house, the blower is wired in parallel with the furnace blower, whose relay switch can easily accommodate the less than 1 amp extra current. A brief heating trial this week showed the condensing gas furnace producing 110 degree heat with 103 degree air reaching the bedrooms in whatever volume is necessary. If the bedrooms will now somewhat overheat, as seems likely, damping the air flows at the registers will both allow individual bedroom control and will paradoxically reduce in-line blower power consumption, as is the fact for every fan, blower and vacuum ever made.The photos show before, during and after installation. There was not a half inch to spare. One needs to be competent with cutting sheet metal, pop riveting, bending edges with a seaming tool and making connections with s-connectors and metal duct tape. So unless you have round ducts, it is not easy to boost air flow with round blowers of this type. However, its quality is top notch; it has near unity power factor; and it is easy to control with a variac or fixed ratio transformer of desired voltage(s). In my case an alternative solution would have me breaking into into floors, ceilings and both stud and masonry walls to route more ducts to the bedrooms or adding electric heat in each bedroom. Since this is my second successful application of a HydroFarm blower, I obviously recommend them over such other options that seem even harder to me.

The product seems like a great product. I bought used unfortunately. I don’t think they checked the product before shipping it out. Upon plugging in it has a terrible rattle noise bc the blade is touching the bent rim in the enclosure. I’ll have to unassemble it and see if i can pound out the dent.

My company purchased this as an upgraded exhaust fan for our spray booth. It works really, really well. In fact, if you use it for a spray booth you will need to have filtered intake air to match the pressure, otherwise its powerful suction will draw dust in through cracks in the door. From 40 feet away, the pressure of the fan can be felt by holding the front door to our shop slightly ajar. You can feel the air rushing in. I’m really impressed.It’s a little loud, but it’s a consistent and pleasant tone, so I don’t mind. We’ve accidentally left it running all night a few times so far, but no sign of any wear or tonal change.

This is the best thing I have done for my 2 story house.I have had big problems with my master being crazy hot in the summer and freezing cold in the winter. I use to close every vent in the main floor and basement and it was still bad. The HVAC guys never put a large enough run upstairs to balance the house.Well let me tell you. I put this in my square duct and it moves soo much air I had to get the controller to turn it down.https://www.amazon.com/dp/B007TFTITS/ref=cm_cr_ryp_prd_ttl_sol_21In the summer my bedroom was colder then my basement. It does make noise so I put roxul insulation all around it and the duck work and I can almost can not even hear it even if its running without the furnace on.I just ordered a relay outlet to wire it into the furnace so it only comes on when the furnace is running. Haven't installed yet.https://www.amazon.com/dp/B00WV7GMA2/ref=cm_cr_ryp_prd_ttl_sol_9If you have a cold or hot second floor this is what is needed.

I have used this fan for about 2 1/2 years now in my pole barn. The barn is divided in two equal sized rooms of 1200 sq. ft. each. The heater (a 250k btu overhead Reznor) is on one side as well as a high ouput wall a/c unit. In order to balance the tempurature and humidity I use the fan to circulate the air between the two rooms. It is not a perfect solution, but it is good enough. If I installed a second fan it would no doubt improve the balancing process, but I can't justify the cost to duplicate the present system. I have a return air duct high in the barn for summer and a floor level duct for winter. The fan has never skipped a beat.

Great Fan, installation it's easy, so far so good, I made an opening a year and a half ago where the duct goes from the first to second floor, and installed one of the cheap duct fans,[plastic fins] it lasted a Little bit more than a year and one of the fins broke.This one is a real fan, I installed a couple of cabinet doors so I have access to it, and insulated the inside of it, the noise is minimal, not enough to bother me.We are happy with it.

Great blower, quiet and powerful. However if your looking to plumb it with 10" ducting think again. The intake hole is 10" but the flange that you could actually slip ductwork over is around 12 1/2"... You'll need to get creative but this thing will move a ton of air.

WOW. This fan is AWESOME. I was replacing a MAX-FLOW fan of the same size, that was just WAY too loud. This fan has has great airflow & isn't super loud. Decent length on the cord too. Fastened up a nice mount & mounted the fan in about 15 minutes with no problems. When done I went to throw the box away & found the stock mounting brackets still in the package. LOL

On time and exactly as described Very pleased