Fresair S8 – Van Conversion Kit

$1,495.00 (USD)

For Van Conversions, RVs, Stepvans, Trailers, etc.

  • Energy Efficient + Runs on 12v using <8A/h at full power.
  • Light Weight – 26.5lbs
  • Low Profile – Streamlined, 4.3″.
  • Includes your choice of 18L Reservoir or Mini Reservoir with universal mounting capability.
  • Adjustable Ceiling Vents – 4 directional vents.
  • Powerful Cooling – Up to 40° drop in air temperature.
  • Eco-Friendly – Runs on tap water.
  • Convenient sleep timer.
  • Bluetooth functionality including control through the app.
  • Low noise – No compressor or engine noise.
  • Runs Dry – State of the art evaporative cooling technology delivers cool air, not moisture.
  • Retrofit – Can be used in preexisting 14 x 14 opening

Why You'll Love It

Temperature drop between ambient temperature and vents can reach -40°F! On average at 85°F ambient temperature, you will see a 20°F+ drop. The hotter the environment the larger the drop.

Fresair runs <8A/h at full power (tests read approx 7A/h) which is only slightly more than a simple roof fan. Compared to traditional rooftop AC units you’ll be using approximately 20x less power.

Running on water and battery power alone as well triple-filtering the air and running clean, even off solar power alone, Fresair is your green energy solution.

With only needing to replace two pumps (injection & return) and a pine filter approximately once a year, the Fresair is low maintenance.

Frequently Asked Questions

We have tested Fresair in high humidity climates like Florida and the cooling sensation works great, however, the evaporative process lessens at humidity levels over 80%. Even when the humidity levels are very high the fan alone provides fast-moving cooling air. Fresair delivers cold air not excessive moisture unlike systems of the past. In higher humidity environments we recommend venting the vehicle by cracking a window to keep air moving. For further detailed information on performance levels in differing temperatures and relative humidity levels see the support page.

No, all that is required is tap water. If you live in a climate where the water is very hard and you are concerned about calcium build-up, a chlorine tablet can be dropped into the reservoir every other month.

There are two pumps for this system (injection – pumps water from the reservoir up to the roof, and return – pumps any excess water extracted from the pine filter back into the reservoir). The pine filter can be gently power washed but it is recommended that both pumps and pine filter be replaced once a year (depending on usage and proper maintenance). Your annual cost to keep your Fresair system running optimum should be around $50, contact your authorized Fresair dealer for a quote or order a maintenance kit.

Fresair offers a one-year manufacturer warranty for your system. Contact your authorized Fresair dealer to inquire about extended warranty packages.

Yes, At this time the covers come in white and black. The cover is constructed from ABS plastic with UV protection which can be custom painted at the dealer level to match any roof or body color.

Depending on the model you’re interested in, there are various reservoir types. Check out our Reservoir page to learn about our different reservoir types. The S7i model has its own reservoir inside of the unit.

 This depends on the outside temperature and humidity but you should see 20°F-40°F reduction from the ambient temperature to the air emitting out of the vents. Fresair is not a traditional air conditioner, there are no coolants or compressors, which would kill the batteries. Fresair is a green product powered by a 12V power source, normally just the regular vehicles existing battery or batteries, drawing minimal power whilst cooling the air with tap water and pine using evaporation.

No, ice will not hurt the system but it is not necessary as the difference in thermal sensation will be minimal.

 Professional installation is recommended but can be accomplished by a skilled owner. Installation instructions are provided.

A hole to accommodate the airbox needs to be cut from the roof (template provided). The unit drops onto the roof and is sealed by foam and silicone gel and mounted using 4 bolts.

The water lines and power lines, contained within a single harness, are run from the unit to the reservoir and battery. The harness contains two water pipes, one to feed the unit with water, the other to return water from the unit to the remote reservoir, as well as the 12V power cable. On vans, the loom runs internally along the ceiling and down the side to wherever you choose to mount your reservoir. You can also install Fresair to use your main freshwater tank rather than a separate reservoir by installing the Mini reservoir.


Top Cover

Straw Filter Assembly

Fan Motor

Water Pump


Main Panel

Control Panel

Finishing Frame

Fresair S8 Specs

How to Install

Whether you’re the reading type or a visual learner, we’ve got resources for your convenience. Check out our installation resources below.

Need More Info?


Our knowledge base is an incredible resource for all things Fresair including parts, installation, maintenance and more.


Want to know all the places Fresair can be installed? Check out our installations page so you can take a look.


Check out our video gallery to see the installation process. Not all installs are the same but this gives you an idea.