I have a Vair that works very well. Not cheap but does the job without complaint. Since it's a compact 12V compressor, I keep it in the Jeep so I can use it for either vehicle. Sometime when exploring I drop the Jeep tire pressure for comfort and traction so it's nice to be able to bring the air back up to road pressures. When adding air to the MH, I use the Jeep battery and move to either end rather than trying to use long hoses or and extension cord.