Відео

You didn't do a Valiant 😢😂 typical

Thank you god for this person that takes a scientific approach to comparing fans 😅

THANK YOU! I've been looking for a review just like this. There's so many to choose from on amazon with reviews that are all over the place. Wasn't able to find that fan on amazon but found it on ebay. Will be ordering it.

Very well made video, but one factor I would like added, is the temperature at which the fan starts to turn. I have the twin bladed Aldi model which starts up very quickly. My only question that has never been mentioned is, can you lubricate the shaft? If so, with what product? ie, grease, oil, silicone, etc.

figures, only one that actually works decent, sold out. Hope you do others, there are some that claim 340 CFM, passive. Would love to see that reviewed.

I'm as much interested in Db as I am CFM. Cannot stand noisy fans. Which one is most subtle?

the YH-BLS802 is spinning in the other direction. It is pulling air instead of pushing. That is why you have not reading...or maybe my eyes play some tricks on me.

You're measuring velocity, air speed, not CFM! In order to measure CFM, you need to multiply velocity by area, which you don't have an area because of the open area around the fan and meter.

EXCELLENT review! Thank you. You cut through the chase and gave an ACCURATE, CONCISE & TIMELY review. Liked, subscribed, & hit the bell.

Your stupid dude, this test is a scam test, you placed fan near stove , your own fan inside detector spin from heat stove did. They actually do nothing only spin, they dont blow, maybe like 10 cm , move your detector 1 meter away and we will see nothing moves unless you blowing with breath. These fans work like this 20 years ago we had similar toys, you light candle and it starts spin as hot air goes up, physics dear god. These start spin after heat from below starts touching fans as air is water actually. To make air go forward you need external energy to push at certain rpm, they can push air maybe 30 cm away and instantly hot air goes up to same place where it goes even without fan

Are they all noisy?

SO, you used a hotplate for each fan providing equal heat for each fan tested... UNLESS you measured the plate temperature and set it to a temperature that would normally be "seen" by each fan, this "test", while using equal heat, may or MAY NOT provide the typical heat from a stove.... Run that hotplate at a typical 300- 400 degrees F and I would bet ALL fans output would increase, some even providing the CFM as advertised.... Just say'in............

Need an update and to indicate the exact temperature you are testing them at.

I wonder if you would have got different values had you used a proper log burning stove ?

Cozystove 4 blade fan, not available in USA or on US Amazon. 🤨

obviously the double fan was not supposed to make that noise and its rubbing was reducing the blade speed

love the review. As everybody else has said first honest short sweet and to the point review. Thanks. My only questions are, for ignorant peasants, like me! what is CFM,(perhaps put the answer to this in the video explanation above) and is there a motor size difference or do they all run on the same size? I am looking at putting a fan on to my oil burning cooker flue (AGA) to see if I can get some heat out and into the room. If you have any reviews on them, that would be great too. Thanks anyway

Dude, this was so helpful!!! I'm so thankful I found it. We just purchased two wood burning stoves and now we need to choose a fan for each. Thank you!

Would that fan work if a person set of a heat source from a set of "tea lights"? Could you to a test run to see how many tea lights it would take to generate adequate heat? This might be a good item for those in Europe to use this upcoming winter when their heating fuel will be diminished!

Thank you for your help in choosing the best model. The world is becoming a better place thanks to people like you and those people at Cosystove.

Yours was the best comparison on stove fans so far. I own the TIEMORE stove fan, 2 fans 4 blades ea i paid 74.00 on feb 2021, its now 88.00 on amazon. the blades dont have a guard around them, so they can be bent easily, if not carefull. its rated at 32db extremely quiet. the bimetal strip under the base will automatically bend to help raise the fan base and reduce the contact area of the heat source to protect the motor and the thermoelectric module. Specifications: Type: Burner Fans Material: Anodized Aluminum Starting temperature: 60℃ (122℉) Maximum working temperature: 340℃ (644℉) Air Flow: 180-250CFM (cubic feet per minute) Stove temperature range: 60-240 ℃ Operating temperature : 200-300 ℃ Noise: <32dB Packing Size: 28* 17* 19cm/11*6.68*7.47in Weight: 1360g/44.09oz i think the larger blades would be the noisest. The fan needs to be moved around on the heat source to find the best spot, for max speed at a safe temp. Comparing noise and max temp would be valuable to keep from burning up the TEG (thermal electric generator) module.

Is there a problem keeping it in the rain? And how long does the battery last once it's charged?

I believe your numbers are wrong, because your anemometer isn't calibrated correctly. It is useful only for comparison purposes. I believe you have set the airflow area in the anemometer settings incorrectly, as the CFM is calculated based on air velocity across a specified area. Sources: 1)The PM6252B user manual 2) An Arctic 140mm PC fan running full power moves 72.8 CFM and can be felt as a gentle breeze from 4 meters away. It moves hair like a strong wind when close.

When you tested the 2 blade fan you only had the meter in front of ONE of the blades , so shouldn't the 77.4 be doubled to 154.8 putting it in first place ??

It seems a lot of air the fans push isn't going through the anemometer and so it's not gauging cfm correctly although it DOES indicate which fan moves the most air.

I'm not sure i totally agree with these results only because each fan produces a set amount of cfm at a given temperature. Each fan should have been tested at THIER MAX heat range in order to achieve proper CFM for testing. I am currently looking for a stove fan, was looking at the GALAFIRE V366 or the V266. However, you are the ONLY UA-camR that I know to have used an actual anemometer... very cool! Now I am not sure 76 USD is worth any of these

Heat Powered Dual Fan shows 2 fans and testing 1 fan at 77.4. Times 2 fans would be 154.8 cubic feet.

Do a review to see if you can change the blade pitch to improve any of the reviewed fans.

Great review thanks.

The one at 2:40 that turns but produces no wind is not a defective blade design but has the wrong polarity for the motor. It blows backwards. They soldered it the wrong way. Easy to fix actually. But oh well... at least to turn the fan the other way might help a little ... although the design is not symmetric for the blades so it wont be ideal. The best is to resolder it and invert the wires going into the motor. By the way quite a few people complain that those fans are rubbish and dont work. My guess is that these people have unfortunately bought wrongly soldered items...

4:27 sounds like a blade got damaged and is hitting the main assembly, or by poor design the blades from the two fans are colliding with each other.

Methodology for the test is terrible. You are only taking the airflow from part of the fan not the whole fans output. Given different sizes this favours the smaller fans as the larger fans are not having a substantial part of their output checked. The dual bladed one for instance was having less than half its output checked....though the noise would have it thrown out pdq anyway

Thanx, informative and useful.

thank you,nice and clear..

You did not place the fans in the same place on the hot plate, also the meter wast not moved around for the optimal air from the fan.

Great video! Amazing stuff

Thank you for this video. It was well done and informative. This is EXACTLY why I watch reviews on UA-cam. Practical first hand experience in a well thought out demonstration. Thank you again.

Thanks, mate! Your test narrows the search significantly. I have electric and gas heaters. Does anyone know if I mount the Peltier fan's base in front of the heating elements (on a heat sync?), would it work?

This was really well done. I wish a lot of other reviews were so clear and to the point.

Having watched loads of these fan videos, none shows a before and after comparison. Test the room temperature with just the stove burning and then test with the fan on top of the stove. If the fan does not move enough warm air into the room, it just winds up as an amusing gimmick.

It would be great if this was remade with proper measurement units.

Thank you 😊

I watch a lot of reviews for different items, I appreciated yours probably the most. Well thought out and not 10 minutes on each fan removing it from of the wonderful cardboard box. You focused on what I think most of us would want to learn in a review

Why weren't these put on the same position on the range each time? Some of these had a bit hanging off the range.

how hot was the hotplate?

Dude where’s the Amazon links?

Very helpful - thank you.

Thanks for the content

Your video shows you used both a 3 bladed and 4 bladed Signstek but you showed the results for the older 3 bladed model. What was your purpose in the switch?

Hardly a comprehensive test. Not tested are fans from Ecofan or any other brand available on Amazon.