How to maintain your home draft system — a GTA homeowner's guide.

1. Why maintenance matters

A draft system is a closed food-service environment. Beer lines, taps, couplers, and faucets are constantly in contact with a living product — one that contains yeast, proteins, and sugars. Without regular cleaning, those components accumulate:

• Beerstone — calcium oxalate deposits that build up inside lines, restricting flow and creating rough surfaces where bacteria colonize
• Wild yeast — not the brewing yeast in your keg, but ambient yeast that produces off-flavours and haze
• Bacteria — particularly Lactobacillus, which produces lactic acid and turns beer sour
• Mould — in drip trays and tap shanks if not wiped down regularly

The impact on taste and health

The flavour impact comes first: sour, musty, wet-cardboard, or medicinal notes are all signs of biological contamination. Most homeowners assume the beer is bad — the keg is fine. The lines aren't. Once contamination sets in deeply enough, the lines need to be replaced, not just cleaned.

On the health side, while domestic draft system contamination rarely causes serious illness, it can cause stomach upset. Commercial draft standards exist for a reason — the same logic applies at home.

System longevity

Beyond taste and health: maintenance directly extends the life of your equipment. CO2 regulators with neglected seals leak pressure. Unchecked glycol coolers overheat. Tap faucets with dried beerstone require replacement instead of cleaning. A $50/year maintenance habit prevents a $300+ repair bill.

2. Weekly maintenance checklist

Weekly tasks take less than 5 minutes. They prevent the visible buildup that leads to bigger problems.

• Wipe down tap faucets — damp cloth around the faucet spout and the exterior collar. Beer residue dries on external surfaces and attracts flies and mould in humid GTA summers.
• Check serving temperature — your thermometer or built-in display should read 2–4°C. If it's drifting, the door seal or the unit's compressor may need attention.
• Clean and drain the drip tray — empty accumulated beer, rinse with hot water, wipe dry. Drip trays are the fastest-fouling component in a draft system.
• Flush each tap — pour a small amount (2–4 oz) before your first pour of the day if the system has been idle. Clears any stagnant beer sitting in the faucet overnight.
• Inspect CO2 gauge — takes 10 seconds. Primary gauge (tank pressure) should be above 200 PSI for the cylinder to have meaningful volume remaining. Secondary gauge (line pressure) should be at your set PSI, typically 10–14.
• Check for visible leaks — any hissing sound, pressure drop on the gauge, or CO2 smell near the fittings means a leak. Address immediately — CO2 accumulation in enclosed spaces is a safety risk.

3. Monthly deep clean

The monthly clean is the core maintenance event. Plan for 45–60 minutes your first time; experienced owners get it down to 30.

What you need

• Line cleaning kit — includes cleaning coupler, hand pump or pressure bottle, hose. Available from homebrew supply stores in the GTA for $30–$60.
• Caustic cleaner (sodium hydroxide-based) or acid cleaner — caustic removes protein and yeast, acid removes beerstone. Alternating quarterly is best practice.
• Faucet brush — for scrubbing tap interiors. A $5 tool that makes a real difference.
• Food-safe sanitiser — Star San or similar. Final rinse after cleaning.

Beer line cleaning — step by step

1. Disconnect the keg Close the CO2 shutoff valve on the regulator. Disconnect the coupler from the keg. Do not remove the keg — it stays cold while you clean.
2. Attach the cleaning coupler Connect the cleaning coupler (from your kit) where the beer coupler was. This coupler accepts cleaning solution from a bottle or hand pump instead of a keg.
3. Mix and push cleaning solution Mix cleaner per manufacturer instructions (typically 1–2 oz per litre of water). Push solution through each tap until it runs clear at the faucet. You'll need about 1 litre per 3m of line.
4. Soak for 15–20 minutes Close the tap. Let the cleaner sit in the lines. This is when it breaks down beerstone and kills bacteria — don't skip the soak time.
5. Remove and clean tap faucets While soaking: unscrew each faucet, disassemble, scrub all parts with the faucet brush and cleaning solution, rinse thoroughly.
6. Flush with clean water Push plain water through lines until no cleaner smell or colour remains. At least 2 litres per line. This step is critical — residual cleaner ruins beer and can be harmful.
7. Sanitise Push Star San solution (1 oz per 5 litres of water) through the lines and leave it — Star San is a no-rinse sanitiser that's safe at proper dilution. Reconnect the keg coupler.
8. Reconnect and purge Reconnect the keg, open CO2, let pressure build for 5 minutes, then pour and discard the first pint (it'll be foamy and contain sanitiser residue). You're done.

CO2 system check (monthly)

Once a month, do a full CO2 check beyond the weekly glance:

• Soap test all fittings — spray soapy water on every connection point. Bubbles mean a gas leak. Common culprits: coupler posts, regulator inlet, line connections.
• Check regulator washers — the rubber washer at the regulator-to-tank connection degrades over time. If you see pressure inconsistency, replace the washer ($2 part).
• Log tank pressure — note your primary gauge reading. Comparing month-to-month tells you your consumption rate and helps predict when you'll need a refill before it runs out mid-keg.

4. Seasonal maintenance for GTA homeowners

GTA winters hit hard. If any part of your draft system is in an uninsulated or outdoor-adjacent space — a garage, a screened porch, an outdoor bar — seasonal prep is non-negotiable.

5. Common problems & fixes

Every draft system owner encounters these eventually. Here's the diagnosis table.

6. BeerFridge.co professional maintenance services

DIY maintenance is effective for most homeowners. But annual professional service catches what DIY misses: seal degradation, glycol system performance, slow pressure drift, and minor leaks that don't yet show on gauges.

BeerFridge.co offers maintenance packages for all systems we install — and for systems installed by others.

Both packages include a follow-up call 30 days post-service. We're also available for one-off diagnostic visits if your system develops a specific problem between annual services.

7. Maintenance cost breakdown

What does a year of maintenance actually cost? Here's the honest breakdown for a single-tap built-in draft system in the GTA.

DIY vs. professional: which is right for you?

DIY makes sense if: you're comfortable with the cleaning process, your system is a standard single-tap setup without glycol cooling, and you have the time to clean monthly. The cost savings are real and the process, once learned, is straightforward.

Professional service makes sense if: your system includes glycol cooling (which requires specialist knowledge), you have multiple taps, your system is in a hard-to-access space, or you simply don't want to think about it. The annual service also functions as an inspection — problems caught early are far cheaper than repairs.