Buying a Generator in Thailand

Need backup power in Thailand? Here’s your simple guide to voltages, trusted brands, and where to shop—plus smart add-ons like a reliable inverter generator or a safe transfer switch kit.

Single-Phase Voltage: 230 V / Three-Phase Voltage: 400 V / Frequency (Hertz): 50 Hz / # of Wires: 3 / Plug Type(s): Type B, C, F, and O

What are you looking for?

• Generator Brands/Models in Thailand
• Where to Buy Generators in Thailand
• Thailand Generator Guide & FAQs

Generator Brands for Sale in Thailand

Thailand offers a mix of portable inverters, diesel sets, and commercial standby systems. Here are some of the most common brands:

• Honda: Popular for reliable, quiet inverter units; perfect for home and small businesses. Typical pricing THB 30,000–90,000. Browse Honda inverter options.
• Yamaha: Known for low-noise portable inverters, good for residential or camping. Prices ~THB 28,000–80,000. See Yamaha EF series.
• Kubota: Diesel gensets (GL series) for longer runtimes; ~6–20 kVA models are common. Price by quote.
• Denyo: Durable Japanese diesel gensets (DCA series), widely used at worksites. Price by quote, typically 10–100+ kVA.
• Cummins: Large diesel standby/prime units for factories and large homes; price by quote.
• Kohler: Premium standby generators with ATS options; generally quote-based.
• Pramac / FG Wilson: Diesel generators for SMEs and industrial needs; price varies by size.

Best Generator Models in Thailand

“Best” depends on your loads, noise, and runtime needs. Always pair a generator with quality accessories like a surge protector and heavy-duty cords.

• Honda EU22i / EU30is: Ultra-quiet inverters, great for home backup and electronics. ~1.8–3.0 kW. THB 35,000–85,000.
• Yamaha EF2200iS / EF3000iSE: Quiet portable inverters with long runtimes. ~2.2–3.0 kW. THB 30,000–75,000.
• Kubota GL6000 / GL7000: Low-RPM diesel sets, ~6–7 kVA; quote-based.
• Denyo DCA-25 / DCA-45: Rugged diesel gensets, 25–45 kVA; ideal for worksites. Quote-based.
• Cummins C30–C60: Strong standby diesel, 30–60 kVA; popular for villas and SMEs.
• Kohler 20–45 kVA: Premium standby models with ATS integration; quote-based.

Where to Buy Generators in Thailand

Choose authorised distributors for warranty and reliable service. Accessories like ATS kits, weatherproof covers, and CO alarms are easy online buys.

Thai Honda Manufacturing Co., Ltd.

• Bangkok Free Trade Zone, Samut Prakan, Thailand
• Contact: +66 2 315 6100
• Hours: Mon–Fri 9:00 AM – 5:00 PM

Yamaha Motor Thailand (Power Products Division)

• 64 Moo 1, Rojana Industrial Park, Ayutthaya, Thailand
• Contact: +66 35 229 300
• Hours: Mon–Fri 9:00 AM – 5:00 PM

Kubota Engine (Thailand) Co., Ltd.

• Navanakorn Industrial Estate, Pathum Thani, Thailand
• Contact: +66 2 529 3800
• Hours: Mon–Fri 9:00 AM – 6:00 PM

Denyo (Thailand) Co., Ltd.

• Samut Prakan, Thailand
• Contact: +66 2 138 3660
• Hours: Mon–Fri 9:00 AM – 5:30 PM

Cummins DKSH (Thailand) Ltd.

• Bangna-Trad Road, Bangkok, Thailand
• Contact: +66 2 301 7474
• Hours: Mon–Fri 9:00 AM – 6:00 PM

Kohler Thailand Power Systems

• Bangkok, Thailand
• Contact: +66 2 700 1234
• Hours: Mon–Fri 9:00 AM – 5:00 PM

Pramac Asia-Pacific

• Bangkok, Thailand
• Contact: sales@pramacapac.com
• Hours: Call for details

Local Hardware and Home Improvement Stores

• Chains such as Thai Watsadu, HomePro, and Global House across Thailand
• Contact: via store websites
• Hours: Typically 9:00 AM – 8:00 PM

Thailand Generator Buying Guide and Tips

• Size matters: Add up your essential loads—fridge, lights, router, small AC/water pump. Many homes manage with 2–3 kW inverters; businesses or farms may need 5–20+ kVA diesel sets.
• Noise levels: Inverter types are 50–60 dB, while open-frame petrol units are 70–85 dB. Diesel enclosed sets average 65–75 dB—important in dense urban Thai neighborhoods.
• Fuel choice: Petrol inverters suit short outages and portability. Diesel sets shine in rural or industrial use with long runtime. LPG/dual-fuel can be cost-effective and safer to store.
• Safety first: Always use certified electricians for ATS or changeover installations. Never back-feed the PEA/MEA supply lines.
• Power quality: Protect electronics with pure sine inverter generators or AVR-equipped units plus quality surge protection.
• Cords & outlets: Thailand uses 230 V; ensure cords and plugs are rated properly (Type O is standard). Use outdoor-rated extension cords.
• Maintenance: First oil change at 5–20 hours, then follow 50–100-hour intervals. Stock up on oil filters and spare plugs. Run monthly test cycles.
• Storage & humidity: Tropical climate demands covered, ventilated storage. Consider running covers and anti-rust spray.

Buying Generator in Thailand FAQs

How much does generator installation usually cost in Thailand?
Portable setups with manual changeovers may run THB 15,000–40,000 including labor. Full standby diesel systems with ATS, pads, and wiring can range THB 80,000–250,000+ depending on size.

How noisy can a generator be in Thailand?
Modern inverters run at 50–60 dB (conversation-level). Open-frame petrol units can reach 70–85 dB, while enclosed diesel gensets usually operate at 65–75 dB. Local building rules may limit noise levels in cities.

Which generator type and fuel are best for Thailand’s climate?
For occasional outages in urban areas: petrol inverter generators are ideal. For frequent rural outages or industrial use: diesel gensets with ATS are preferred for efficiency and durability in hot, humid weather.

What are the typical warranties for generators in Thailand?
Portable inverter units: usually 1–2 years limited warranty. Diesel standby/prime units: 12–24 months or hour-based (whichever comes first) when purchased from authorised distributors. Always confirm terms in writing.