How often should you clean kegerator beer lines (and what happens if you don't)
Every 2 weeks for daily pours, 3-4 weeks for weekend pours, plus a quarterly acid pass. Full frequency table, the cleaning method that works, and what skipping it costs.
Topic
Beer Line Cleaning
Frequency, technique, products, and troubleshooting for keeping your beer lines clean.
Beer line cleaning is the maintenance task most home kegerator owners skip until something goes wrong. The lines look fine from the outside, the beer pours OK, so why bother? Two weeks later the pour is hazy and tastes faintly of vinegar, and now you're three rounds into a cleaning cycle on a Saturday morning when you should be drinking.
The rules are simpler than the internet makes them sound. Clean every two weeks if you keep the same beer on tap continuously. Clean between every keg if you switch styles (especially light lager to stout, or anything to a hop-forward IPA). Use a proper line-cleaning solution; do not use bleach. Run the solution through, then flush with two complete keg-volumes of clean water before tapping a fresh keg.
What follows is every cleaning, troubleshooting and frequency question we've answered. Start with the cornerstone if you have time; jump to specific issues if you're mid-pour.
Notes in this topic (1)
Frequently asked: beer line cleaning
How often should I clean my kegerator beer lines?
Every two weeks for continuous use of the same beer. Between every keg if you switch beer styles. Annually for the full kegerator deep clean (faucet, coupler, drip tray, fridge interior). If your pours suddenly taste off, clean the lines first — it solves about 80% of "weird taste" complaints from home kegerator owners.
Can I clean beer lines with bleach?
No. Bleach reacts with the proteins in beer residue and creates compounds that taste worse than the residue you were trying to remove. Use a proper alkaline beer-line cleaner (PBW, BLC, or similar) at the dilution recommended on the bottle. Flush with two complete keg-volumes of clean water before tapping a fresh keg.
How long does a proper line clean take?
Twenty minutes if you have the gear set up: a hand pump or pressurised cleaning bottle, line-cleaning solution at proper dilution, a faucet wrench, and patience. The first time you do it expect 45-60 minutes including reading the instructions. Subsequent cleans are faster because you know the sequence.
Do I need to disassemble the faucet to clean it?
Quick rinse-clean: no. Full deep clean: yes, every 4-6 weeks. Faucet internals trap protein build-up that line-flushing alone won't reach. Soak in line-cleaning solution for 15 minutes, scrub with a faucet brush, rinse thoroughly. A neglected faucet is the second most common cause of pour-quality complaints after stale lines.
What's the difference between caustic and acid line cleaners?
Caustic (alkaline) cleaners dissolve protein residue and beer stone — the everyday gunk that builds up from beer flowing through the line. Acid cleaners dissolve mineral deposits — the stuff that builds up from your water supply over months. Most home kegerator owners need caustic weekly/biweekly and acid once or twice a year. Commercial bars often alternate the two.
Other topics
- Foamy Beer Fixes Diagnosing and fixing foamy pours from your home kegerator.
- Flat Beer Fixes CO2, leaks, temperature, and the things that flatten your beer.
- CO2 Systems Tank sizes, pressures, refilling, and gas troubleshooting.
- Buying Guides Honest, US-market kegerator buying guides by budget tier and use case.
- Sankey Couplers D, S, A, G, U, M couplers and which beers use which.
- Setup First-time kegerator setup, balancing pressure, line length, and getting your first pour right.