We currently run two direct drive 4gpm cold water machines at one time on most jobs. These machines have been very unreliable. They have Honda GX390 engines and AR/General pumps.

I'm sick and tired of them breaking all the time and am considering getting new equipment and setting up our trailer with hose reels. Would it be better to get two 4gpm belt drive machines or one 8gpm hot water machine. We do mainly residential siding, concrete and stone.

Could one expect to get 8gpm out of most residential hose hook ups?