How Much Does AC Cleaning Cost in Bangkok? 2026 Price Guide

AC cleaning prices in Bangkok range from ฿300 adverts on a lamp post to ฿2,000 per unit from a brand's own service centre. Most of that spread is not profit margin — it is what the visit actually includes. This guide lays out the real 2026 numbers and what each price buys.

Standard clean: ฿500–900 per unit

This is the six-monthly service for a wall-mounted split: filter, evaporator coil and blower wheel washed in a wash bag, drain line flushed, outdoor coil rinsed, and the unit run and checked afterwards.

CoolRova's prices, all units in one visit:

The price falls per unit because the expensive part of a visit is getting a technician, ladder, pressure washer and wash bags to your door. Once they are there, the second unit costs less than the first. Full table on the pricing page.

Deep chemical wash: ฿1,200–1,800 per unit

When a unit smells, drips or blows weak after a standard clean, the dirt is behind the blower wheel. A deep chemical wash removes the blower wheel, louvres and drain pan, foams and soaks everything, and applies an anti-mould treatment before reassembly. It takes 60–90 minutes per unit rather than 45, which is where the higher price comes from.

CoolRova's deep wash is ฿1,290 per unit. One is included per unit on the 4-Visit Year Package, and most homes need it about once a year on top of the six-monthly standard cleans. When to choose which is covered in standard clean vs deep chemical wash.

Repairs: ฿590 diagnostic, ฿1,500–6,000 for common fixes

A repair visit starts with a diagnostic — gauges, current draw, capacitor, fan motor, sensors and board. CoolRova charges ฿590 for the diagnostic and waives it if you go ahead with the repair. Typical fixed quotes including parts and labour:

• Capacitor: ฿1,500–2,500
• Indoor fan motor: ฿2,500–4,500
• PCB board: ฿3,500–6,000
• Compressor: quoted per unit, and often the point where a new inverter unit makes more sense

You should always get the repair price in writing before any work starts. If a technician cannot tell you the number before opening the toolbox, ask for a different technician.

Refrigerant: ฿990–3,500

Gas is where a lot of Bangkok customers overpay, because "it needs gas" is the easiest thing to say and the hardest to check. A sealed system never runs low — if it is low, it is leaking. A proper refrigerant visit pressure-tests first, finds and quotes the leak, then charges by weight. CoolRova charges from ฿990 for a small top-up including the leak test, and ฿1,800–3,500 for a full recharge after a repair, depending on the refrigerant. If you are not sure which gas your unit takes, read R32 vs R410A.

Year packages: 10–25% off per visit

Because two cleans a year is the right interval in Bangkok, buying them together is cheaper than booking twice:

Packages are a bundle of visits valid for twelve months, not a contract. Unused visits are refunded, and the guarantee runs the whole year instead of 30 days. HostCool is the version for Airbnb hosts, with unlimited same-day no-cool call-outs between guests — there is more on that in the AC schedule that stops "not cold" reviews.

What the ฿300 advert leaves out

A ฿300–400 "ล้างแอร์" price is possible only by skipping steps. Usually that means no wash bag (so the wall gets wet), no drain flush, no coil cleaner, a filter rinse and a wipe of the cover. The unit looks clean and is dirty again within weeks. Sometimes the low price is recovered by "finding" a gas problem on site.

Whatever you pay, ask for three things: a wash bag, a drain test, and a photo of the coil before and after. If a company won't provide those, the price is not the bargain it looks like.