I need to find a new air compressor

Factual Questions
1

I’ve been searching and searching and I’ve yet to find a good replacement for my air compressor.

It is used primarily to charge pressure tanks associated with well water systems.

It needs to be very portable. I take it up and down stairs alot.
I want it to be tankless
Oil-less required
It must be able to make 120psi

The one I’ve been using for the past 13 years has been perfect. The info I have for it is:

Speedaire-5F240 bought from Grainger
1HP
4.5 CFM@40psi
3 CFM@90psi
weighs 25 pounds

Anyone know were I can find a replacement?
I’ve been searching alot online and haven’y come up with anything. Everything that provides comparable CFM’s are twice the wieght(usualy because they have a tank)

2

Are you anywhere near a dive shop? If so, buy a breathing air cylinder. I have a few old steel SCBA cylinders with a fill pressure of 2215 psi, and use them for small nailing jobs where I don’t want to drag out a compressor. One filled cylinder will supply sufficient air to a framing nailer for driving of ~ 350 16d nails. They’re also darned handy if you have a slow tire leak (nail puncture) and just want to get home-deal with the tire in the AM light.