King Key RV Services

King Key RV Services is a mobile RV tech based in Round Rock, Texas. It comes to you, and it describes itself as "a traveling waste management expert serving recreational vehicle owners across the region," working wherever your rig is parked.

Its specialty is holding tanks. It cleans black and grey water tanks on motor homes and RVs of all types, services the sensors that tell you when a tank is full, and does cleaning work on RV water heaters. It also handles general service and maintenance of RV plumbing. A clogged or neglected tank is more than a smell problem. It can back up, trip sensors falsely and shorten the life of the system, so a tank cleaned on a regular schedule tends to cost less over time than one dealt with after it fails.

King Key does not publish a trip fee or an hourly rate, so ask about both when you call. It says it serves RV owners "Throughout The Central Texas Hill Country," though it does not list specific towns or a mile radius, so confirm it reaches your location before you book. It accepts Zelle and major credit cards, with a 4.5% processing fee added on card transactions.

Google rates it 4.9 stars from 78 reviews, a strong showing for a business built on a job most people would rather not do themselves.

This is a good fit for an owner in or around the Hill Country who wants tanks, sensors and plumbing handled at the rig rather than hauling it somewhere, especially before a trip or when a tank has started smelling or backing up.