MORE HVAC POWER! Improve Ducted HVAC With a Automatic Booster Fan (2023)


----6" Booster Blower:
-----Digital Temp Controller:



Fan Mail/Business Opportunities/Inquires:
Address: PO Box 349 Candia, NH 03034

Shop my store full of my favorite tech and tools HERE:

IMPORTANT SAFETY INFORMATION, PLEASE READ FULLY: This video is for entertainment purposes only. The content of this video include or may include high voltage wiring, moving parts, suspended weights, risk of fire electrocution and many other hazards. These hazards are capable of serious injury, death or property damage and destruction. Consult a with licensed professional before attempting anything you see in this video. Do not try this at home. As an Amazon Associate I earn from qualifying purchases.


I went and picked myself up a little Willie, get it.

Hey, everybody.

We've got a problem to solve today.

And it has to do with a spare bedroom that I have upstairs with a very high ceiling.

It's get a I have a Mitsubishi ducted unit, it's, just like their ductless units, except this one's, a ducted unit and you'll see that later in the video.

But at any rate, it is not pushing enough air to really circulate the air.

You know, above six or seven feet.

So I end up with a whole different climate at the bottom and a different climate up top of the room.

It really is just not that effective.

So I picked up a fan on Amazon or Ebay.

I know, this was Amazon.

You can find these on Amazon or Ebay and I strongly recommend if you're gonna be putting a booster fan in line.

Don't go with the ones that you can get from Home Depot or Lowe's, I've used those before and other little projects.

And they just don't move enough air.

This isn't that much more expensive I.

Think this was only about sixty bucks, but it's pushing out about 300 cubic feet per minute of air, that's, a ton, and it actually has a lot of power behind that airflow.

So if you've got a lot of bends in the tube it's, a real high resistance line, it, it does a great job of moving air through the other thing I needed because I don't want to just leave this thing running all the time and I don't want to turn it on and off every time I want to use.

It I went and picked myself up a little Willie, get it a little? Alright, what this little guy does is a digital temperature controller.

And it allows you to set different set points for when this blower will kick on and off.

So when the compressor isn't running on the AC it'll, actually, shut this fan off because I've got a little probe that's going to go in line.

Gonna probe my little Willie I, get a little probe that's going to go in line and it's going to pick up the temperature.

And compare the differential between that in the ambient temp, you can also set it just to turn on and off at certain set points, regardless of the ambient temp.

But these are pretty cool.

So once this is all install it's going to do its job it's, not going to waste energy by running when I don't need it and I don't ever have to touch it again.

So that's the plan here.

So we'll, take you upstairs here, I'll show you where the problem is and we'll start putting together the solution.

So herein lies the problem it's, not so bad when it's in heat mode.

But when it's in AC mode, this air just hangs down low and it's compounded by the problem of having an extremely high ceiling.

Here, I don't know, how high that is but it's probably about 11 feet, maybe 12 to the peak.

So you get a whole different climate going on up here and the air really separates.

It just doesn't doesn't do a nice job.

So we're going to boost this guy up so I've got a pretty unique house.

And that creates unique problems.

This is a solution that most people don't even know exists.

But this is a DC inverted.

Just like the actually I'll show you just like one of these guys I've got these in the house as well.

But there are rooms where I didn't want one of those things hanging in every single room, and they make this ducted version.

So instead of what you would normally mount on the wall, you have a pretty slim, although it's substantial on its size things about four feet wide.

But you've got a ducted version of what would be on the roof or up on the ceiling.

So I've got a whole bunch of lines coming off this going to different parts of the house.

And this particular line right here.

A little six-inch insulated line.

This is what feeds that bedroom floor, register so we're going to put our booster inline right in there somewhere go for power.

I've got an outlet on this side of the wall.

So I'm gonna pull that apart and we're gonna tap in off that outlet.

Because we've the blower itself is sitting right about here on the other side of that wall.

So that'll work out nicely, yeah, nothing's ever easy.

The old metal box had to come out because I had two lines going in and I needed a feed a third.

But all three of them were coming from the top down.

So that just wasn't gonna work.

So they put up a good fight, but in the end I won so I put a new old work box in there and snake the wiring in make myself an outlet right here about the same height as the kill switch for the air conditioner itself, which is now running and I haven't mounted this yet, but we're gonna plug it in and you're gonna see once it it's already reading the air conditioners putting out 47.6 degrees.

So it kicks on at 55 and will kick off once the temperature running through this line reaches 65.

So what that means is only when that compressor is running, it will put now cold air will this boost a fan kick on.

And as soon as this thing, the compressor kicks off, and it just starts recirculating the temple, raise up above 65, and it will shut this off to save me from running a fan that I don't really need for circulation I just need it for air.

So I'll show, you I'm got a short in this line up, but do a few few other things here.

But for now there's enough to give you an idea, but you do have here the air, and it is cranking.

So this I just tested it.

And in 10 minutes drop the room temperature, four degrees to go four degrees before it was probably a good hour and a half.

And and if that it depends on how warm the day was so this thing and then I was afraid, it might be a little too loud in the hallway since it's mounted to that wall, but it's really no louder than the unit itself, which is right here.

Just a tiny bit louder, maybe a little bit of a hyung, but otherwise it's great.

So next thing we'll get that unit mounted to the wall and shorten the the pipe, which should help me pick up a little more velocity and should be should be good to go.

Well, I'd say, we can check this project off.

The list is done and well worth the effort in the cost, which was under a hundred bucks for the temperature control unit and the blower and it's made a huge difference in that room and will make make it much more comfortable.

So if you're thinking about putting one of these in I, highly recommend, you do it I would also highly recommend.

You get a decent blower do not get the ones at Home Depot in stock I think, Home Depot and Lowe's.

You can probably special order these as well.

But the ones in stock just do not have the output like this does so very pleased with it.

As always if you have any questions feel free to throw them down in the comment section, if you like this type of video and like to see more like it, please hit like and subscribe I will also be populating around my finger, additional videos that may interest you so feel free to click on those subscribe button is right there.


Everybody have a great day.


Do duct booster fans help? ›

While duct booster fans do boost airflow in specific areas, they don't solve the underlying problem. There are many reasons why a home could have uneven heating and cooling, including the following: Clogged Air Filters — Clogged filters are one of the most common causes of insufficient airflow.

Is a duct booster worth it? ›

While your air duct booster fan will give your air conditioning system a boost, it might not be able to resolve underlying problems in your systems. So it's always better to have a professional come in and inspect for issues like leaky ducts, clogged air filters, and failing fans.

What does a booster fan do? ›

Booster fans help circulate the air through the ductwork. They boost the airflow in a room, which increases how much warm and cold air makes it into a room. The inline duct fans do not rest on the ceiling. They are attached to the ductwork inside the ceiling or attack and are located further away from the room.

What are the disadvantages of booster fan? ›

Disadvantages of booster fans.

Booster fans reduce the ability to control recircula tion of air underground. If an underground main mine fan is damaged, boost er fans limit opportunities to restore ventilation to specific areas.

Does increasing fan speed increase CFM? ›

The first fan law relates the airflow rate to the fan rotational speed: Volume flow rate (CFM) is directly proportional to the fan rotational speed (RPM). If the fan RPM is increased, the fan will discharge a greater volume of air in exact proportion to the change in speed.

What is the most common cause of poor air flow in a duct system? ›

Dirty or blocked ducts.

Some particles will still get through and stick to the ducts due to moisture or static pressure. Over time, these small particles will accumulate and cause airflow and air quality problems. To prevent such issues, make sure to have your ducts cleaned by a professional.

What reduces pressure loss in a duct system? ›

Pressure loss in the duct system can be reduced due to larger duct section which provides relatively even air speed in the whole system.

Why is my air vent so weak? ›

A fan clogged by dirt, a stuck wheel, broken motor, or a loose fan belt are all common problems that reduce the amount of airflow you feel coming from your vents.

Where do you put a duct booster fan? ›

For maximum performance and minimum noise, the best location to install your In-Line Duct Fan™ is 6 - 10 feet from the register you wish to boost air to. To prevent air leaks use a good quality duct tape to seal seams in the ductwork after installing the In-Line Duct Fan™.

What is the best duct booster fan? ›

The 10 Best Booster Fans You Should Consider
  1. Smartcocoon Smart Vent 4X10 Register Booster. ...
  2. AIRTAP Quiet Register Booster Fan by AC Infinity. ...
  3. EZ8 Smart Register Booster Fan by Suncourt Equalizer. ...
  4. 9004150 Automatic Register Booster Fan by Cyclone. ...
  5. Breeze 1000-0099 Baseboard Booster Fan by AirFlow.
Sep 27, 2022

How do you install a duct booster? ›

A booster fan that fits inside a regular duct register is the easiest to install. All you need to do is unscrew and remove the louvered or shuttered cover and screw the booster fan in its place. The fan will have its own slatted register grille. Pull out the fans wire through the grille and plug it in the power source.

Is auto fan better than high fan? ›

High—Fan is continuously on high. Auto—Fan cycles on demand with the thermostat entering cooling, heating, or dehumidification modes.

What does auto fan speed do? ›

AUTO means that the fan turns on automatically only when your system is heating or cooling air. Once the thermostat reaches the desired temperature, the entire system shuts off until the next cycle. ON means that the fan is constantly on and blowing air when your HVAC system is not heating or cooling air.

Does fan speed make a difference? ›

Fan speed is more important for your AC than it is for heating as it will also affect the rate at which the evaporator coil absorbs heat from the air inside your home. For your AC system to cool efficiently, the fan needs to be able to move a certain amount of air every minute.

Are dryer booster fans worth it? ›

A dryer booster fan will result in less lint backup and can improve drying times by up to 50%. What's more, they improve the longevity of your dryer. Dryer booster fans are recommended when dryer duct length exceeds 25 feet with no bends, or shorter if your duct has bends.

Will a fan help circulate heat? ›

Fans can be used to encourage air circulation and move the warm air down from the ceiling to your level. Using fans to circulate heat allows you to lower the thermostat and save on energy bills. Ensure your home is warm this winter by making sure your insulation is secure, and by using fans to circulate heat.

Top Articles
Latest Posts
Article information

Author: Saturnina Altenwerth DVM

Last Updated: 11/08/2023

Views: 5393

Rating: 4.3 / 5 (44 voted)

Reviews: 83% of readers found this page helpful

Author information

Name: Saturnina Altenwerth DVM

Birthday: 1992-08-21

Address: Apt. 237 662 Haag Mills, East Verenaport, MO 57071-5493

Phone: +331850833384

Job: District Real-Estate Architect

Hobby: Skateboarding, Taxidermy, Air sports, Painting, Knife making, Letterboxing, Inline skating

Introduction: My name is Saturnina Altenwerth DVM, I am a witty, perfect, combative, beautiful, determined, fancy, determined person who loves writing and wants to share my knowledge and understanding with you.