Water heater repair. I found the heaters were working properly with no codes. The two 50-gallon power vent Bradford White heaters were installed (5 yrs old). Checked vent discharge on both heaters, and no obstruction was visible, and both were blowing out. I checked temps in multiple locations and everything was functioning as expected with no dips or problems getting temps where they should be. After talking to customer I obtained he only uses shower in master bath so I checked that location it does get hot and up to temp with no issues along with a second shower in master with no issues after talking to customer to get more information he told me he never had a problem getting hot water but that he had to move his control handle from it’s normal location ( about 1/2” to get the temp he wants). I let him know we could order a new cartridge if the temperature becomes an issue. He was content with the handle location for the temp currently. I determined there is no issue at the moment