Mike Boswell
Contributor
A nice air compressor that's large enough for me and my buddy can be had for significantly less than $5000, and the local gas supplier would be thrilled to drop off a tank of O2, which would allow me to do partial pressure blending for the cost of an O2-compatible fill whip and pressure gauge.
Terry
My wife and I take our boat out locally as often as time and weather conditions allow, but that probably amounts to no more than 25 outings (100 tank fills) per year.
Just out of curiosity I recently looked into the purchase of a small compressor. The cheapest ones I could find run about $3,500 new. Assuming a savings of $5.00 per fill and 100 fills per year, it would take 7 years to pay off the investment.
Operating costs (filters, electricity and maintenance) would make the ROI even worse, but could be partially offset by fuel savings from not having to drive to the LDS for tank fills.
Bottom line is, unless I was going to be filling more than 200-300 tanks per year, buying my own compressor doesn't really pencil out.