This thing is kinda expensive for what it does, but I have to say it's worth every penny if you have a couple days of painting ahead of you. I just told myself that I'm saving a fortune painting the exterior of my house. I'll at least get the proper tools to make the job quicker. 3 story house, 2500Sqft inside space, 15 gallons sprayed, estimated about 5000sqft outside wall space, repainted the house the same color, took 6hrs to cover the whole house with one solid coat of new paint and I wasn't in a hurry, started at noone. I used a new Harbor Frieght airless sprayer, combination worked great. I did bump up to a 50ft hose, due to the height of one side of my house being 30ft tall I used a Graco tip.I also sprayed a 300sqft tiny house with 16ft roof peak and it was so quick I sprayed an old shed on the same property, both in about 40 minutes. 5 gallons sprayed, both buildings were thirsty. This thing is hard to use in small spaces. You need to be able to stand back about 8 feet minimum to use this thing on the lower parts of the wall. Up high you can be 3-4 feet away from the wall. Make sure you have that kinda room on most of your walls. Up high I just adjusted the angle of the tip, it was easy.I'm a first time user of an airless sprayer. So your results might vary. If nothing else it's a lot safer to be 5ft up on a ladder then 11ft up a ladder. Ground level painting up to 15ft high is much safer. Overall it's worth the money to prevent falling off a ladder at height.