Reddit mentions of Maxxair 00-05100K MaxxFan Ventillation Fan with White Lid and Manual Opening Keypad Control

I'm on solar only, so conventional AC is pretty much out of the question. IMO, even the swamp cooler route would result in too much wet air in the van. I use an [Endless Breeze] (https://www.amazon.com/Fan-Tastic-Vent-01100WH-Endless-Breeze/dp/B0000AY2Z6), a Maxxair and keep the doors open to provide a (sometimes minimal) breeze. I keep the open doors on the opposite side of the sun, or put up my canopy to keep it shady. Just remember that you'll probably want some mosquito netting to keep the bugs out when your doors are open.

My secret it to avoid humid areas in the summer (usually east of the Mississippi). It makes the days and (especially) nights much more bearable. Still, it will get hot some days. Your body adapts after the first few weeks and it's honestly not that bad thereafter. Source: Lots of time spent in Escalante, Mojave & Southern Arizona in June/July.

A roof vent with a cover that has a reverse mode for exhaust should do the trick as long as you can open a window elsewhere in the van to pull fresh air from. This is what I went with.

The web page says it uses 1 1/2 amps. I have a Maxx Air vent fan that uses .1 amps on the lowest speed and is inaudible. I'm sure it is fewer cfm at .1 amps than the 1 1/2.

https://www.amazon.com/Maxxair-00-05100K-MaxxFan-Ventillation-Opening/dp/B002OWAIB8/ref=sr_1_1?ie=UTF8&qid=1480448368&sr=8-1&keywords=maxxair+fan

You can get a manual opening version that is much lower profile and let's you control how open you want it to be.

But as mentioned in other comments the limitation is that you can't use it in the rain and it's pretty unstable on the lid if open while driving.

Personally I would go with the white Maxxair fan because I don't think it is all that noticeable. Plenty of white work vans have stuff on the top. If you really want stealth, get a used ladder rack and stick a ladder on there to help hide the fan and disguise yourself :)

I calculated that I would be using ~75a per day and everything will be drawing 12v DC.

I bought

https://www.amazon.com/Renogy-Monocrystalline-Solar-Starter-Wanderer/dp/B06X41H7Z1

I'm planning on running

https://www.engelcoolers.com/mt35f-u1.html

https://www.amazon.com/gp/product/B002OWAIB8

• Fridge 1.5 amps *24=36amps
  
• Fan low speed .3 amps*12=3.6 amps
  
• Fan medium speed 2 amps *12=24 amps
  
• Cell phone 1 amp *6 hours=6 amps
  
  
  Total =~75amps daily.
  
  I figure the panels will generate between 75~90 amps per day.
  
  I will have 200 amps of deep cycle sealed acid as my bank.
  
  I don't plan on connecting to the alternator, the solar electrical will be isolated.
  
  My question is, is there any need for me to get an inverter if everything I'm running is 12v DC?

Yeah, I thought anyone interested in the thread would be! But as soon as I posted the original version with amazon links, it was auto-deleted. Weird.

Oh well, here are my products:

Solar panel: https://www.amazon.com/dp/B017OMTAV6/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=3NTUA0DGQ65YX&coliid=I2R53I6ASRE7TH&psc=1

Charge controller: https://www.amazon.com/dp/B00JMLPP12/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=3NTUA0DGQ65YX&coliid=IMF9F8IHLJ6EN&psc=1

House battery: http://www.oreillyauto.com/site/c/detail/SSBQ/3478PLT/03321.oap?year=1967&make=Ford&model=Mustang&vi=1332302&ck=Search_03321_1332302_-1&pt=03321&ppt=C0005

Battery isolator: https://www.amazon.com/dp/B0058SGDFK/ref=wl_it_dp_o_pd_S_ttl?_encoding=UTF8&colid=3NTUA0DGQ65YX&coliid=I2UYT4LFVI14AN

Van fan: https://www.amazon.com/dp/B002OWAIB8/ref=wl_it_dp_o_pd_S_ttl?_encoding=UTF8&colid=3NTUA0DGQ65YX&coliid=I1Q9S1UN7Z94H7&psc=1

LED lights: https://www.amazon.com/gp/product/B007JF2A6G/ref=od_aui_detailpages02?ie=UTF8&psc=1

Fuse block: https://www.amazon.com/dp/B000K2MBPA/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=3NTUA0DGQ65YX&coliid=IK1ERB55YT6QX&psc=1

Busbar: https://www.amazon.com/Blue-Sea-MiniBus-Grounding-Terminal/dp/B0058GA4IO/ref=sr_1_11?ie=UTF8&qid=1467345205&sr=8-11&keywords=6+terminal+bus

Main line fuses (inline): https://www.amazon.com/dp/B00WZHE3A4/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=3NTUA0DGQ65YX&coliid=ICS8GYAQNUJV1&psc=1

No, I haven't. I have a boat that has these hatches, but I have not installed or serviced them yet.

I bought a Maxxfan deluxe for my van. https://www.amazon.com/Maxxair-00-05100K-MaxxFan-Ventillation-Opening/dp/B002OWAIB8
because I wanted the fan feature. I haven't installed it yet, though. Maybe I'll put in one of each, so I can have a good intake and an output for circulation.

If I just wanted an openable skylight, I would go with the marine hatch. Marine hatches are significantly more expensive - they are built to be stronger, more durable, and water proof. You can even walk ontop of them. They need to perform all these functions to be able to prevent a boat from sinking. They also can be big enough, and open wide enough for you to climb in and out of. Would be cool to be able to go up on your roof - from inside the van.

I imagine that installation is about the same. Cut a hole in the roof ( scary ). Apply liberal amounts of marine sealant, screw it in to adequate backing boards.

Camping world, in general, is grossly overpriced on a lot of things.

I'm gonna be honest and say that fan looks like shit. Sorry bro. I'm just not sure id want to skimp on such an essential part of the build, and when you compare it to the batteries and plywood, it's really not that pricey. For me, it's essential to keep moisture out with some good air flow.

This doozy has treat me pretty well. The rain cover is much sleeker and can be up while driving. That's shweet. Maybe I'd have gotten the remote. Idk.

I'm getting super lost trying to calculate amp usage and determine necessary battery size. I've read the FAQ a few times and it's not helpful for cases I keep encountering.

For example, this fan doesn't list watts anywhere, not on Amazon, not on Home Depot, not on the manufacturer website. https://www.amazon.com/dp/B002OWAIB8/ Some comments say it uses "3 amps" others "5", I have no idea how to use this information.

Then on things like a fridge (Dometic CFX 50US), it says: Rated input power (AC) 50 W . Does this mean it uses 4.16 amps an hour? This would mean 100 AH per 24 hours. Although Amazon comments say it uses much lower than this, one person saying 18AH a day. Stuff like this is super confusing because I don't know what number is accurate or what I'm supposed to plan for. Should I plan for 100AH? 18? 50? 69?^(nice)

Does anyone have some videos that help explain this because I am so confused.