Looks like they installed a booster where it wasn’t needed.

Of course if you remove the register the flows better.

Great video thanks!

No, I'm not an HVAC technician nor any sort of tradesman. Please consider this following critique as constructive and nuanced anyways. Your video is 6th in a search for "air register booster fan". It's quite short and doesn't consider a number of factors. One has already indeed been pointed out: it's battery operated. How does it compare to a unit that is corded and AC powered? Is the amperage the same? You didn't say. You didn't compare here that I could see. Now I understand people may have short attention spans. Yet this video is far from a complete review and lacks a lot of laboratory testing standards. Now if that's not in your wheelhouse, okay, I appreciate that. But as such, you can't be too surprised that more scientific and even just plainly eggheaded folks are going to call you out for a lack of rigor and thoroughness in your testing methods-- I mean MORE than just that airflow testing device. Good day to you. Consider what I said, or don't.

Nice work, thanks for taking the time to make this video. I have the same furnace and the same problem with my heat exchanger. I think Carrier makes these heat exchanger’s?? If so how do I get the new replacement heat exchanger?

People need to under the combos of okay and fast setups You just gotta know how to combo it Big hose+ tiny pump Big pump + tiny hoses with no valves Big pump+ big hose its just crazy good

Can this cut corrugated galvanize???

Is it necessary to wet the coil? Does it work if it's completely bone dry?

If you use the manifold/micron gauge on just the pump, how deep of a vacuum can it pull without the system load. I see the official mark is 25 micron, but my actual measurement on milwaukee M18 Fuel 5 CFM cannot reach below 300.

No, wrong. You're comparing the booster fan with grate to an open duct with no restriction. Not the same thing. A valid comparison is booster register vs conventional register. You're just encouraging service calls.

I hate when people speak in absolutes. I have a room that barely got any air and it stayed warm during the summer. I installed a booster fan and now the room is more comfortable. Maybe a better title would be, "Why booster fans don't always work" or "Why some booster fans don't work well" or "Why THIS booster fan doesn't work".

That means you didn't need one to begin with.

I came up with the idea to put a fan over my vent on the top floor and the vent is located on the floor. My problem is that top room doesn't circulate enough area and heat obviously goes up. For my purposes I would just like a fan to pull air into the hottest room 24/7 during the summer and I installed a return vent over the door to let the hot air out so for me it should work great for that. I don't need it to boost air just to keep circulating area from the cooler downstairs.

So creepy

best test tny

Why would you use a booster on a register that doesn’t need it? It’s meant for a room that has poor circulation

A booster fan is going to increase a low flow vent just due to physics. It's just that simple. This was a terrible demo.

Educated beyond intelligence. Maybe put a register on the wall fornthe second test. It would score better than the fan assist. Plug the fan in on the first test, it beats both scenarios. What your doing is equivalent to measuring how much air comes through an open door on a windy day VS how much air comes through a door thats open 30% . Run your furnace and pull your filter with the blower running. Hear the difference? I hope you borrowed your friends tools and didn't know what you were doing, opposed to being a professional who is probably shafting people on energy audits

These guys might be the scam.

You didn't put a vent cover back on.

I live in a mobile home...i have water flowing in my vents. My filters are changed every 3.5 weeks...coils are cleaned yearly as needed...drain line inside unit is draining fine to the drain outside. Well i took my under pinning down and theres like 8 foot of hvac flex pipe that runs from vent to vent, is so full of water its literally sagging to the ground almost. Im a single grandma raising my grandchild...can anyone help me with whats wrong

Missing lots important step

the booster not even plugged in....NOPE

This review is a scam 😅😅😅

This guy just wanted to show off his new Balometer, otherwise he has no idea about Physics.

What’s the exact product you used?

Always charge thru the liquid line when its in a vac,it'll suck all the refrigerant to the evap.. ..your flooding the compressor with liquid...rub.dirt on your hand then rub that tag,everything will be visible...

I have a similar problem for over ten years and I’ve had multiple HVAC companies tell me all sorts of things but zero solutions. Can you tell me what I should be asking and who should I call

On the back of the one your reviewed you can see how much material is blocking airflow. Are they all like that?

Intentionally dishonest review, or do you not understand that these booster have fans and require a power source?

What is the CFM with regular register ? This information would be good to compare.

I love those fake “reviews” 😂 First plug the booster fan into the wall, before testing LOL.

Is that a battery powered booster fan or did you test it while it's not even on and boosting?

Not a good representation.. put the register on and then test it. The register restricts air also and would show less air flow, you basically tested a none restricted hole against a restricted one.

This really works, the temperature coming out of the ac unit is cold and when it travels through these docs and hits the vent in your room it's less cold. This changes everything. Save Cosy on electricity

nothing beats the old school! 🔥

If there’s one thing he’s proving here for sure is that hose size matters! A 5 cfm can go along way with the right hose. I have the same pump with 2 Navac 3/4 evacuation hoses I’ve still yet to try. I used to be the pull vac through manifold time of guy cause that’s now I was taught but I’ve come along way. Can’t wait to try my setup. Might make a video.

What vacuum hose setup are you running with the milwaukee vacuum pump? Thinking about running the same setup as that hose looks hefty and good quality

Thank you very much for this great video.

I weld cars back together for a living. Would their be a issue with welding them cracks up

OMG 😯How is this cheaper than replacing it

Probably the biggest reason that's vac-ing down so quick is the 3/8 vac hose

Nice. But your mid-70s manometer's accuracy comes into question, lol!! Hey, but I know a guy that can hook you up with a brand-new DG-1000!! Reach out to Chris H. on the Grapevine!!

Man you flat got on this and got it done like a boss!

WOW, never seen it done old school. Even the old timers i've worked with had pittsburg machines and roller and an edger...nice job!

But that upsell at honeypot sounded soooo good

You are so good and so fast. Thank you for teaching me how to do it. Where can I order a heat exchanger?

This guys energy is awesome in an instructional setting! Love the content.

Milwaukee sucks! (LOL) I'm really thinking about getting one of these since I found out I have Milwaukee batteries with me all the time. Who knew? With a check valve to boot!! I do have one question and I'm really too lazy to go look at their website - Is this vacuum pump explosion proof? Is it compatible with the new required refrigerants coming or already here? Asking for a friend.

Thanks for the video! Doing a bathroom exhaust fan and couldn’t find any information anywhere on how to seal these adjustable elbows or even if they needed to be sealed