Easy to install. Havnt really should check the quality once they install it. You have to put them to the test. Came with a good amount of fittings and a heatsink. The line I had to use was too small for the red end to let water through and didn't have an o-ring to make a good water seal for marine use. But fine when out of the element, which annoys me because I use air compressors under the bed of a truck.