Larger tank or bigger pump on an air compressor?
This is causing a bottleneck in my work. The pump is also 2 years old and I suspect it will be done pretty soon.
I'm looking at an Husky 80 gallon 3 cylinder single stage. Still has the maximum pressure of 155 psi. Has a cfm of 14. I'm thinking if the 60 kicks on in about 40 seconds, the 80 kicks on in about 55 seconds. Maybe it gives me a total run of 3 minutes, then refill and rest. Maybe 40 minutes working and 50 minutes resting. Right now I spend about 5-6 hours per day dusting.
This pump is $849. At Harbor Freight there is a $799 two stage 60 gallon that has a slightly higher pressure, 165 psi. It has 10% more cfm, 15.8 @ 90 psi. Maybe with this much cfm I never drop to 90 psi at my tool? Maybe 45 minutes working and 45 minutes resting and refilling? That would be great. Both of these have 22 amp motors. I have a 30 amp breaker and the outlet is about 10' from my breaker. I used 10 awg wire anticipating an upgrade.
There is a Husky 2 stage, 80 gallon. Says it is also 22 amps. 175 psi and 14.1 cfm @ 100 psi. At $1200, this pushes my budget. There is a very similar one at Sears for $1300 but it says 24 amp motor and has a similar cfm. I'd be afraid that it will pop the breaker. I might have to upgrade to 8 awg and a 40-50 amp breaker. If that was the case, I might even be able to squeeze a bit more?
I am thinking the Harbor Freight because of the higher cfm, might be more productive than the 80 gallon. The pump runs about 11-12 hours per week right now. All I need is it to go 2 years, about 1,100-1,200 hours. Lets say I get busy and use it 1,500, at that point I will need and can afford better. I just need a little step to get me to the next step.
Any compressor advice is appreciated. Would prefer to keep it under $1,000 delivered and able to run on the present electrical. Thanks.