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Aircon Chemical Overhaul: What Happens, When It’s Worth It and When It’s Overkill

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Dirty aircon before BeeChem Wash, BeeHonest Aircon Singapore

A chemical overhaul is the biggest clean an aircon can get. It’s also the one people get talked into most often. So before you say yes, it helps to know what it actually involves and when your unit really needs it.

What happens during an overhaul

The fan coil comes off the wall and gets dismantled. The coil, blower, water tray and covers are separated, and each part is chemical-washed on its own. Then everything goes back together, back on the wall, and we test it. It takes longer than a normal servicing and needs some room to work, so clear a bit of space around the unit.

Signs your aircon may need one

  • Black spots or sludge you can see on the vents and blower
  • A smell that stays even after a chemical wash
  • Leaks that come back after servicing
  • A unit that hasn’t been properly cleaned in years, or that came with a home you just moved into

When it’s overkill

If your aircon cools well and gets serviced regularly, you almost certainly don’t need one. A Deluxe General Servicing or BeeChem Wash™ will do the job for less. A technician who recommends an overhaul should be able to show you the dirt that justifies it.

The middle option: jet wash

Between a wash and a full overhaul sits our Chemical Overhaul Jet Wash. The fan coil stays mounted, a strong aluminium-safe chemical dissolves the sludge and a high-pressure jet flushes it out. Many units with stubborn dirt do fine with this.

  • Jet wash (current promo): $100 for 1 unit, $90 each for 2, $80 each for 3, $70 each for 4 or more
  • Full Dismantle Chemical Overhaul: from $160 for 1 unit, $100 each extra unit

Bigger 18,000 to 24,000 BTU units add $15 per unit on a full overhaul. No GST, no transport fee. More on the chemical wash page.

One thing to ask about old units

Plastic parts get brittle with age. On an older aircon, ask the technician about this before they dismantle it, so nobody is surprised by a cracked cover.

Dr Stranger’s note: an overhaul is surgery, not a check-up. I don’t operate until I’ve seen the scan, and nobody should be operating on yours without showing you why.

Not sure if yours is due? WhatsApp us a photo of the inside and we’ll give you a straight answer, or book online if you already know what you want.

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