Air Duct Cleaning in Hang Hau

Proper source-removal cleaning puts the system under negative pressure with a high-power vacuum, then agitates each duct run with rotating brushes or compressed-air whips so debris is pulled to the collector — not blown into the house. Register covers, the air handler, and coils should be included.

Usually no — blanket chemical fogging is discouraged unless there's confirmed microbial growth and the product is approved for HVAC use. Mechanical cleaning plus fixing the moisture source addresses the cause; fogging is the most-upsold, least-needed add-on.

In Hang Hau, whole-system pricing depends on vent count and system count. Beware coupon offers far below market — the classic scam is a cheap teaser price followed by aggressive on-site upselling for 'mould remediation'. Get vent count and total price agreed in writing.

Lint-clogged dryer vents are a leading cause of house fires and make dryers run long and hot. Annual cleaning of the vent run — not just the lint trap — restores airflow, cuts drying times, and removes the fire risk. It's cheap relative to the risk.

There's no fixed schedule — clean when there's visible mould, vermin, renovation dust, or significant debris buildup. In practice every 3-5 years is typical for forced-air homes, sooner after building work or if filters blacken quickly.

Usually per system or per vent: a flat whole-house price for an average system, with surcharges for extra vents, multiple air handlers, or heavy contamination. Dryer vent cleaning is typically a smaller separate line item.

Mainly larger flats and village houses with ducted (concealed) aircon, plus long kitchen-exhaust runs. If you have wall or window units, skip duct cleaning — book fan-coil cleaning instead.