In short
Pick the size by room area: a bedroom under 14 m² needs 9,000 BTU, 14–20 m² needs 12,000 BTU, 20–25 m² needs 15,000–18,000 BTU, and a living room 30–40 m² needs 24,000 BTU. We handle delivery, professional installation, and warranty — pay by bank transfer, card, or cash. English support on LINE (@airdsolution) or by phone.
Why buy from Air-D Solution
- A registered Thai business — Air-D Solution, by Sombat Engineering, is DBD Verified Gold (an official government-verified business). You're not buying from an unknown seller.
- Installed by licensed engineers — not just dropped at your door. Correct vacuum, pressure test, and bracket work so it runs well and the warranty stays valid.
- All major brands, honest pricing — Daikin, Mitsubishi, Carrier, LG, Haier, Gree, Midea, TCL and more, at wholesale-based prices.
- Nationwide delivery, with installation across Greater Bangkok and Pathum Thani (ask us for other provinces).
- Manufacturer warranty + our after-sales service — typically 5 years on the compressor, 1 year on parts (varies by brand).
- English support — chat with us on LINE or by phone and we'll guide you through the whole thing.
Tell us your room — we'll pick the right unit
Send your room size and we'll recommend the right BTU and model, with a clear price including installation. Free, in English.
How it works — 4 simple steps
- Tell us your room — size, whether it's sunny, and how you'll use it (condo, house, shop). Message us in English on LINE.
- We recommend the right size & model — correct BTU, inverter or standard, within your budget, with a clear all-in price.
- We deliver & install — professional installation by engineers, nationwide delivery. We confirm any extra pipe/bracket cost first.
- Warranty & after-care — manufacturer warranty plus our service if you ever need help.
What size do I need? (BTU by room)
🧮 Quick BTU calculator — enter your room size
Know in seconds what size your room needs — no guessing.
| Room size (m²) | Bedroom / not sunny | Living room / sunny | Good for |
|---|---|---|---|
| Under 14 | 9,000 BTU | 12,000 BTU | Small bedroom, condo |
| 14 – 20 | 12,000 BTU | 15,000 BTU | Standard bedroom |
| 20 – 25 | 15,000 BTU | 18,000 BTU | Large bedroom / office |
| 25 – 30 | 18,000 BTU | 21,000 BTU | Living room |
| 30 – 40 | 24,000 BTU | 25,000–28,000 BTU | Open living / small shop |
| Type | Best for | Trade-off |
|---|---|---|
| Inverter | Running the AC many hours a day — much cheaper on electricity long-term, quieter, steadier temperature. | Higher upfront price. |
| Standard (fixed-speed) | Occasional use or a tight budget — lowest upfront cost. | Uses more electricity if run a lot. |