Plumbing is one of those things where advice gets passed around like it’s a family recipe. Your neighbour swears by it. Your mate’s uncle “used to do a bit of plumbing”. Someone on Facebook says it’s fine.
And sometimes, sure, the quick tip works.
But a lot of common plumbing myths end up costing homeowners real money either because they cause damage, make a small issue worse, or delay the point where you actually call someone who can fix it properly.
If you’re a homeowner in Hemel Hempstead, Berkhamsted or Leighton Buzzard, here are a few myths worth retiring.
Myth 1: “If I pour boiling water down the sink, it’ll clear the blockage”
Boiling water can help with minor grease build-up, but it’s not a magic unblocker. If you’ve got a proper build-up of fat, food residue, soap scum, or hair, you’re basically giving it a hot rinse and hoping it changes its ways.
Also, depending on your pipework, repeatedly pouring boiling water down can be a bad idea.
What to do instead: If the sink is slow, deal with it early. If it keeps coming back, get it properly cleared recurring slow drains are usually a build-up problem, not a one-off.
Myth 2: “Those ‘flushable’ wipes are fine”
They’re called flushable because marketing is powerful, not because they behave like toilet paper.
Wipes don’t break down the same way. Over time, they catch on rough pipework, combine with grease and limescale, and create blockages that are a lot more unpleasant (and expensive) than they needed to be.
What to do instead: If it’s not toilet paper, don’t flush it. Simple rule, fewer disasters.
Myth 3: “A dripping tap isn’t worth fixing”
A drip feels like a small thing. Until it’s not.
Dripping taps waste water, can stain basins, and often get worse slowly. The bigger issue is what it signals: worn parts, pressure issues, or fittings that are on their way out.
What to do instead: Fix it while it’s a small job. It’s almost always cheaper earlier than later.
Myth 4: “If the boiler is working, it doesn’t need servicing”
This one catches loads of homeowners out.
Boilers can “work” while slowly becoming less efficient, more temperamental, or less safe. Servicing is about catching wear and tear before it turns into a breakdown usually at the exact moment you need heating and hot water the most.
What to do instead: Get it serviced regularly. It’s the boring option, but it’s the money-saving option.
Myth 5: “If I keep topping up boiler pressure, that’s normal”
If you’re topping up the pressure now and then, it might not be a huge issue. But if you’re doing it often, that’s not just “how boilers are”. It’s usually a sign of something going on a leak somewhere, a faulty component, or a system issue that needs attention.
What to do instead: If the pressure keeps dropping, get it checked. Constant topping up is not a long-term plan.
Myth 6: “Chemical drain cleaners are the best fix”
They can shift some surface-level gunk. They can also:
- fail to remove the full build-up
- mask the issue until it gets worse
- be harsh on pipework (especially if used repeatedly)
If you’re reaching for chemicals every few weeks, the drain isn’t “fine”. It’s warning you.
What to do instead: Treat chemicals as a last resort, not a routine. If it keeps happening, get the drain properly cleaned.
Myth 7: “If one radiator is cold, the boiler must be failing”
Not always.
A cold radiator can be trapped air, a valve issue, sludge build-up, or a balancing problem. The boiler might be absolutely fine the system just needs attention.
What to do instead: Don’t guess. If radiators are uneven across the house, it’s worth getting the heating system checked so you’re not wasting energy trying to heat rooms that never quite get there.
Myth 8: “Plumbing problems fix themselves”
This is the quiet myth behind most expensive call-outs.
Slow drains, small leaks, weird smells, low pressure, noisy pipes they usually don’t disappear. Homeowners just get used to them. Then one day it becomes urgent.
What to do instead: If something keeps happening, treat it like a sign, not a personality trait of the house.
Final thoughts
Most plumbing myths are popular because they’re comforting. They make it feel like you can avoid the hassle.
But in a lot of homes across Hemel Hempstead, Berkhamsted and Leighton Buzzard, the cheapest option is usually the sensible one: deal with small issues early, don’t rely on quick fixes forever, and get proper help when something isn’t right.
If you want a second opinion or you’ve got a recurring issue you’re tired of chasing, East & Gray can help with plumbing and heating across the area. We’ll explain what’s going on in plain English and get it sorted properly.