Reversible Vent Fan

[freddmc]

I am looking at putting in a Fantastic vent fan. Is the option to get a reversible motor worth while?
Thinking of it in a practical sense the fan blades must be oriented to move air in a certain direction. By reversing the motor it seems to me it would be significantly less efficient. I wouldn't think that the blade pitch would be changeable.

Regards
Fred.

[wnjj]

Ours is on “in” more than out. It’s in a truck camper directly above the bed so when you’re laying up there you get the best breeze. “In” also means the intake air is up high, predictably away from other smells.

Also, if someone uses the bathroom it helps to move the air out the bathroom vent instead of pulling air from it to the main cabin. The same goes for “pressurizing” the cabin to help vent cooking.

[AllegroD]

99.9% of the time our FF are on 'out' (exhaust). Creates a great breeze through the rig. Only time we found 'in' to be useful was at home, when we repaired and painted the entry stairwell box.

[SidecarFlip]

Lots cheaper to add your own. What I did. Mine came with the basic FF. I added a reversing switch and a multi speed switch from Dell City Electronics. Think it cost about 10 bucks and my time.

[Jayco-noslide]

We had a Fantastic installed in our bedroom and wouldn't be without one. It's the model that's reverseable, with a remote and can be thermostatically controlled. We only use the air out setting 90% of the time to pull through the bedroom window. Never use the thermostat.

[jodeb720]

I have two FF's in the 5er. I have, rarely, had mine set to intake - but on occasion have done it.

If I were to do it again, i would opt for having it be reversible.

[Dick_B]

When a fan exhausts various windows can be opened to provide air flow thruout the RV. When the fan blows in only the area below the fan is affected.

[time2roll]

Mine is reversible however for me pushes air out only. No reason to pay extra for this option IMO.

[freddmc]

Or this one to do both reversing and speed control.

Regards
Fred

[freddmc]

"If you buy one with a center off position, it will just like the one FF uses"
Presumably then you could also add your own speed controller as well.
https://www.ebay.ca/itm/DC-12-40V-10A-PWM-Motor-Speed-Control-Switch-Controller-Volt-Regulator-QP/254347852877?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D2%26asc%3D20160908110712%26meid%3Df908c075ed794b128a4f7a9dfee6c9ca%26pid%3D100677%26rk%3D4%26rkt%3D30%26sd%3D323886635244%26itm%3D254347852877%26pmt%3D1%26noa%3D0%26pg%3D2385738&_trksid=p2385738.c100677.m4598

[DFord]

We've got a FF over our bed and every once in a while we use it to bring in some fresh air for awhile. All DC motors are reversible. All you need to do is swap the positive and negative wires to the motor. It takes a double-pole/double throw switch to do that. If you buy one with a center off position, it will just like the one FF uses. Not hard to add at any time. The basic FF motor, fan and housing are all alike. The accessory options are added to enhance it's operation - like reversing directions, rain sensor, motorized opening/closing, temperature control and multi-speed switch. There's even an option for remote control that gives 14 different speeds. All of these can be added to the basic unit without changing the motor blades or housing. One of the nicest add-ons is the pop-out screen so you can wash the lint build and bugs off easily.

[SidecarFlip]

FF's are good in both directions until the chinese motor expires.

[Wiscampsin]

Last 3 RV's have had a reversible Fantastic Fan. Seldom used the intake mode. We do have the thermostatic control which is useful.

[rk911]

our FF moves air in both directions. we rarely have it pull air in.

[Johno02]

Mine s reversable, and I have used it both ways, depending on the occasion and need. However, I haven't checked ours too closely, but most fan blades are designed with a curve like an airplane wing, to move air better in one direction. Doesn't mean that it won't work the other way, but there may be a slight difference. Probably not enough to notice. Observe most home ceiling fans, those blades are just flat paddles, and they will move air in either direction.