Arm · based in Ton Pao, San Kamphaeng · working across Chiang Mai
Aircon cleaning & AC repair in Chiang Mai
I am Arm, and I do the work myself. My prices are published up front, I tell you the cost before I start, I do not top up refrigerant that is not actually low, and I sheet the room so your floor and furniture stay exactly as they were.
LINE ID @794xvrnm · Mon–Sat 8:00–18:00 · usually on site within 24 hours
What I do
Aircon cleaning
from 550 THB
Standard clean 600 THB per wall unit, or 550 THB each for three or more. The full strip-down clean is 2,000 THB — I take out the blower wheel and every removable part, wash them separately and disinfect them. If your unit has no smell and gets cleaned regularly, I will tell you the standard clean is enough.
AC repair
500 THB diagnostic
Not cooling, water dripping, strange noises, unit cutting out. I charge 500 THB to diagnose it, and I take that off the bill if you go ahead with the repair. I quote you before I touch anything.
New installation
from 3,000 THB
3,000 THB for 9,000–12,000 BTU, 3,500 THB for 18,000–24,000 BTU. I vacuum the line set properly every time — it is the step nobody can see and the one that kills compressors when it gets skipped. Warranty up to 1 year.
Relocation
3,500 THB
Moving house or changing rooms. I pump the refrigerant back into the condenser before disconnecting, so you are not paying for a full recharge afterwards. Removal only is 700 THB.
Washing machine drum clean
from 999 THB
I take the drum out and wash every removable part, rather than pouring cleaner in and running a cycle — the build-up sits on the outside of the drum where a cycle cannot reach. Top loaders start at 999 THB and go by capacity; front loaders start at 1,299 THB because they are more involved to strip down. Around three hours per machine, 30-day warranty.
Refrigerant top-up is 25 THB per pound for both R32 and R410A, and I check the level free of charge first. If it is not actually low, I will tell you so rather than sell you a refill.
The burning season matters more than you think
If you are new to Chiang Mai, the months from February to April are the hard part of the year. The city sits in a bowl ringed by mountains, and in the dry season a layer of warm air traps smoke from agricultural burning over the valley for weeks at a time.
Two things follow from that. First, the filter that came with your air conditioner does not stop PM2.5 — it is designed to catch coarse dust and protect the coil, not fine particulates. What your aircon actually does for you is let you keep the room sealed, which is what really keeps the outdoor air out. Pair it with a HEPA purifier for the room you sleep in.
Second, soot clogs coils fast. A unit that was fine in January can be blowing weakly by March, and April — the hottest month, when every technician in the city is booked out — is a bad time to discover that. Get it cleaned before the season, not during it.
Why people call me back
- Prices are published on this site. You know roughly what it costs before you call, and I confirm the exact figure before I start.
- I do not top up refrigerant unless it is genuinely low. Overcharging a system shortens compressor life, and it is the easiest way for a dishonest technician to pad a bill.
- I show you the old parts I removed and explain what failed and why. And if a repair is not worth the money, I say so — even though I earn more if you let me do it.
- Two layers of drop sheets on every cleaning job. Your floor and furniture stay as they were.
- Warranty: 30 days on a standard clean, 60 days on the full strip-down clean, and up to 1 year on installation.
- Tax invoices available for businesses.
Areas I cover
I am based in Ton Pao, San Kamphaeng, so the eastern side of the city is quickest for me, but I cover the whole of Chiang Mai including the old city, Nimman and the southern suburbs.
- สันกำแพงตลาดสันกำแพง
- ต้นเปา–บ่อสร้างหมู่บ้านร่มบ่อสร้าง
- หนองป่าครั่ง–ท่าศาลาแยกดอนจั่น
- สารภีเวียงกุมกาม
- วัดเกต–ฟ้าฮ่ามวัดเกตการาม
- ช้างคลาน–ไนท์บาซาร์เชียงใหม่ไนท์บาซาร์
- เมืองเชียงใหม่คูเมือง
- ป่าแดด–หนองหอยเซ็นทรัล แอร์พอร์ต
- สันทรายสันทรายหลวง
- ดอยสะเก็ดวัดพระธาตุดอยสะเก็ด
- นิมมาน–ช้างเผือกถนนนิมมานเหมินท์
- แม่ริม (ดอนแก้ว–เหมืองแก้ว)อุทยานดาราศาสตร์สิรินธร
- หางดง–แม่เหียะบ้านถวาย
- แม่ออนน้ำพุร้อนสันกำแพง
Frequently asked questions
Do you speak English?
I handle bookings, quotes and job details in written English over LINE. It is the clearest way for both of us and it keeps a record of what was agreed. If you are not comfortable in Thai, please message me on LINE rather than calling.
How much does aircon cleaning cost in Chiang Mai?
My standard clean is 600 THB per wall-mounted unit for 9,000–18,000 BTU, dropping to 550 THB each when you have three or more. Larger units at 18,001–38,000 BTU are 800 THB. The full strip-down clean is 2,000 THB per unit.
How often should I clean my aircon in Chiang Mai?
More often than in most places, unfortunately. During the burning season from February to April the air here carries far more soot than usual and filters clog fast. I suggest a full clean in January before the season starts, rinsing the filters yourself every 2–4 weeks through it, and a second full clean around May or June.
Can you issue a tax invoice?
Yes. I work with cafés, restaurants, hotels, guesthouses and offices that need proper documentation, and I can issue a tax invoice as normal.
Do you work on condos and rental properties?
Yes — houses, condos, dormitories, hotels, restaurants and offices. If you manage an Airbnb or a rental villa and need units serviced between guests, message me with the number of units and the area and we can work out a schedule that fits your turnovers.
How quickly can you come?
Usually within 24 hours, and the same day if I have a slot free. I work Monday to Saturday, 8am to 6pm, and can take bookings outside those hours for an additional fee. The one exception is April, when the whole city wants a technician at once — book ahead if you can.
Get a quote today
Send me the number of units, roughly what size they are, and your area. I will give you a price before anyone comes out. LINE is easiest for English.
Mon–Sat 8:00–18:00 · closed SundayTax invoice available