[hvacvegas]

Personally, i would just open your garage doors when it goets hot in there.

 

[Michael James]

Personally, i would just open your garage doors when it goets hot in there.

It is hot every day in the summer. Opening or partially opening garage doors make great access for robbers. That is how many robbers access houses. I saw that on The TV. LOL. But I not kidding.

Or, I can just do nothing. It is not horrible just annoying.

 

[R600a]

I double checked the manufactures web site. That is correct. See AC Infinity Airlift Fan 14": 1513 CFM at 70 Watts.

I really like that brand I've been using their products on some of my own projects and I have not had any issues.
I expect that number is rather optimistic like if you had the fan in the middle of a room with no restriction on the intake or exhaust it would move that much air.

 

[hvacvegas]

It is hot every day in the summer. Opening or partially opening garage doors make great access for robbers. That is how many robbers access houses. I saw that on The TV. LOL. But I not kidding.

Or, I can just do nothing. It is not horrible just annoying.

If its hot every day in the summer, when is this going to be used? You are going to suck hot air in.

Get a wifi garage door opener. Open it before you go inside. Close it when you go to bed.

 

[ga-hvac-tech]

I double checked the manufactures web site. That is correct. See AC Infinity Airlift Fan 14": 1513 CFM at 70 Watts.

I am not arguing with you... however...

Got a link to that...

I doubt even the motor in a Tesla is that efficient.

 

[Michael James]

If its hot every day in the summer, when is this going to be used? You are going to suck hot air in.

Get a wifi garage door opener. Open it before you go inside. Close it when you go to bed.

Yes, I am going to suck in hot air, say 78 degrees so my garage does not get to 100 degrees. I have a wifi garage door opener that will close as any time i set. It sounds like you are suggesting for me just to leave the garage door open. As i said before, that is how things get stolen. I have a lot of high value things in my garage, leaving the door open is not an optiion.

 

[Michael James]

I am not arguing with you... however...

Got a link to that...

I doubt even the motor in a Tesla is that efficient
If you google 1500 CFM fans, others will pull up that take 45 watts. 70 watts is not a stretch at all...

 

[R600a]

I am not arguing with you... however...

Got a link to that...

I doubt even the motor in a Tesla is that efficient.

https://acinfinity.com/hvac-home-ve...xhaust-ventilation-fan-14-temperature-and-humidity-controller/#product-warranty
I am guessing this is the one. I don't trust the numbers but it is an ECM fan.

 

[Michael James]

https://acinfinity.com/hvac-home-ve...xhaust-ventilation-fan-14-temperature-and-humidity-controller/#product-warranty
I am guessing this is the one. I don't trust the numbers but it is an ECM fan.

Yes, that link is to the correct fan. I am not sure why you would not trust the manufacturer's numbers. This fans performance is nothing special. I gogled 1500 CFM fan. I found one by Continental Dynamics that took 45 watts and one by Global Industries that takes 63 watts. If anything, 70 watts may be on the high side. Fans are cheap and cheap to run.

 

[R600a]

Yes, that link is to the correct fan. I am not sure why you would not trust the manufacturer's numbers. This fans performance is nothing special. I gogled 1500 CFM fan. I found one by Continental Dynamics that took 45 watts and one by Global Industries that takes 63 watts. If anything, 70 watts may be on the high side. Fans are cheap and cheap to run.

I just thought it took a little bit more energy to move that much air but I am usually dealing with centrifugal blowers with ductwork on them which are much less efficient than axial fans with no ductwork so that's probably part of the difference.

I really like that brand I have been using one of their small axial fans in my range hood for a couple years now and it has been flawless. I am going to be using one on a refrigerator project too.

 

[hvacvegas]

I am not arguing with you... however...

Got a link to that...

I doubt even the motor in a Tesla is that efficient.

Sounds like someone figured out a way to beat seer2

 

[hvacvegas]

Yes, I am going to suck in hot air, say 78 degrees so my garage does not get to 100 degrees. I have a wifi garage door opener that will close as any time i set. It sounds like you are suggesting for me just to leave the garage door open. As i said before, that is how things get stolen. I have a lot of high value things in my garage, leaving the door open is not an optiion.

What if, you pushed air in, and vented it out?


Do you have a flat rubber roof, or shingles

 

[Michael James]

I just thought it took a little bit more energy to move that much air but I am usually dealing with centrifugal blowers with ductwork on them which are much less efficient than axial fans with no ductwork so that's probably part of the difference.

I really like that brand I have been using one of their small axial fans in my range hood for a couple years now and it has been flawless. I am going to be using one on a refrigerator project too.

I suspect a central AC fan blows with more force and are more durable but use more watts.

The brand seems real good, this fan is Wifi enabled and has a thermostat

 

[Michael James]

I am going to talk to my contractor about 2 things

1) Sealing the hot water heater closet, which is not hard to do. Actually, that should work all by itself. "Work" meaning address any back draft issue with the hot water heater and minimizing the size of in take vent to say 12" X12".

2) Mounting the fan so it pushes air in....that would also help address any remaining issues.

 

[Michael James]

What if, you pushed air in, and vented it out?


Do you have a flat rubber roof, or shingles

I am going to talk to my contractor about 2 things

1) Sealing the hot water heater closet, which is not hard to do. Actually, that should work all by itself. "Work" meaning address any back draft issue with the hot water heater and minimizing the size of in take vent to say 12" X12".

2) Mounting the fan so it pushes air in....that would also help address any remaining issues.

I have living space above the garage so I have to mount the fan on the wall.

 

[ga-hvac-tech]

Yes, I am going to suck in hot air, say 78 degrees so my garage does not get to 100 degrees. I have a wifi garage door opener that will close as any time i set. It sounds like you are suggesting for me just to leave the garage door open. As i said before, that is how things get stolen. I have a lot of high value things in my garage, leaving the door open is not an optiion.

Yeah... understand that... I have a metal working machine shop in my garage

 

[Michael James]

I really appreciate everyone's input! I now can have an informed conversation with my contractor.

I would never thought installing an exhaust fan would be so complicated.

Thanks for your help!

Michael

 

[hvacvegas]

I really appreciate everyone's input! I now can have an informed conversation with my contractor.

I would never thought installing an exhaust fan would be so complicated.

Thanks for your help!

Michael

Do you have a rubber or shingle roof?

If you have a rubber roof, you have to be very careful not to over pressurize the building, as the rubber will blow up on the roof like a big baloon.

 

[Michael James]

Do you have a rubber or shingle roof?

If you have a rubber roof, you have to be very careful not to over pressurize the building, as the rubber will blow up on the roof like a big baloon.

Roof is shingle. Garage will be vented enough to ensure no pressure building.