Ok my turn.
I am ordering a 5.5gmp 2500 psi machine from pressure tek along with the 5-6gpm jrod kit which comes with 0040(soap high), 0015(rinse high), 2540(soap low), 2515(rinse low).
If I am correct, these tips are way too strong to clean a house. A 2540 nozzle would give me a 25 degree spray but the 4.0 orfice size would go beyond the PSI that this machine is capable of, essentially maxing out my psi at 2500 at the tip of the nozzle. It is my understanding that when doing a house, you want less than 800psi.
Unless of course the 40 in the 2540 is an actual size of 40 and not 4.0. In that case I would get under 100psiā¦