Choosing a water heater manufacturer in Vietnam starts with knowing which companies actually produce water heaters in the country. This guide profiles seven manufacturers with production in Vietnam, from Vietnamese companies to European groups running plants in Bac Ninh, Hanoi and Dong Nai, then gives importers and distributors a comparison table and a supplier checklist. SONHA Water Heater is our brand; we explain how we selected every company below.
| At a glance The seven water heater manufacturers in Vietnam covered here are SONHA Water Heater, Ariston, Ferroli, Tan A Dai Thanh (Rossi), Viessmann, Kangaroo and Toan My. Each company produces water heaters in Vietnam. The order reflects fit for importers and distributors that need flexible OEM supply of electric water heaters, using the criteria explained in How We Selected These Water Heater Manufacturers in Vietnam. |
1. Top 7 Water Heater Manufacturers in Vietnam
The 7 profiles below cover Vietnamese producers and European groups that run their own water heater plants in Vietnam. Each profile lists the company’s origin, Vietnam plant, water heater range and the buyers it suits best.
1.1. SONHA Water Heater
SONHA Water Heater is the water heater brand of SONHA Group, a Vietnamese manufacturer that began with stainless steel water tanks in 1998 and started producing water heaters under the SHI label in 2016. As a Vietnamese water heater manufacturer, we build storage, instant and heat pump water heaters for export markets.
- Origin: Vietnam
- Vietnam plant: 4,880 m² production area, certified to ISO 9001:2015 by TÜV NORD
- Water heater range: storage, instant and heat pump water heaters
- Suited to: importers and distributors that need market-specific configurations, such as 110 V models for Mexico, and flexible order volumes
- Production capacity and quality control. Our water heater factory brings 10+ years of manufacturing experience and an annual capacity of 1M+ units, supplying 5+ export markets across Asia, North America, Africa and Australia. Every unit passes a 100% electrical test at outgoing quality control (OQC) and receives a QC Pass label before packing, and our products meet CB, CE and other international standards.
- Product range: SONHA Water Heater’s product range covers the three main electric water heater types, from compact storage units to large capacity and heat pump models:
| Type | Capacity / power | Key specifications |
|---|---|---|
| Storage water heater | 15–30 L, 1,500–2,500 W | Enamel-coated tank, Incoloy 840 heating element, ELCB, PU foam insulation |
| Large capacity storage water heater | 50 / 80 / 100 L | 220–230 V or 110–127 V, 0.75 MPa rated pressure |
| Instant water heater | 4,500 W | With or without booster pump, IPX4 |
| Heat pump water heater | 200 – 270 L (all-in-one); 160–300 L (split system) | All-in-one: R290 refrigerant, COP up to 5.4, inverter compressor, smart touch control. Split system: COP 4.2, separate outdoor unit and insulated storage tank, energy-efficient and quiet operation. |
- OEM/ODM services. For private label projects built on these lines, we handle packaging and label design, accept trial orders and small to medium order volumes, and work on FOB, CIF or CFR terms. Lead time is 30–45 days for standard products and 45–60 days for OEM/ODM orders. Planning a private label line? Start an OEM project with SONHA Water Heater’s OEM water heater manufacturing team.
1.2. Ariston
Ariston is an Italian water heating group that produces electric water heaters at a plant in Tien Son Industrial Park, Bac Ninh province. The plant opened in April 2014 at a cost of USD 18 million and was planned to produce up to 1 million electric water heaters per year.
- Origin: Italy; the group is headquartered in Fabriano and listed on the Milan Stock Exchange since 2021
- Vietnam plant: Tien Son Industrial Park, Bac Ninh, covering more than 50,000 m²
- Water heater range: electric water heaters, with the Vietnam plant serving Asia Pacific and exporting to Europe and the US
- Suited to: buyers that need electric water heaters produced at high volume in Vietnam
1.3. Ferroli
Ferroli is an Italian heating group whose Vietnamese subsidiary, Ferroli Indochina Co., Ltd., operates from Thach That – Quoc Oai Industrial Park in Hanoi. The subsidiary is 100% foreign-owned, was established in 2008 and supplies several types of water heaters.
- Origin: Italy; the group was founded in San Bonifacio in 1955 by Dante Ferroli and works in heating, air conditioning and renewable energy
- Vietnam plant: Thach That – Quoc Oai Industrial Park, Hanoi
- Water heater range: electric water heaters of several types
- Suited to: buyers that want a European heating brand with production in Vietnam
1.4. Tan A Dai Thanh (Rossi)
Tan A Dai Thanh is a Vietnamese group headquartered in Hanoi that sells water heaters under the Rossi brand. Rossi launched in 2002, and the group runs a factory in Ha Nam producing instant water heaters and 15, 20 and 30 L storage models.
- Origin: Vietnam
- Vietnam plant: Tan A Dai Thanh Ha Nam factory
- Water heater range: instant water heaters, storage water heaters of 15–30 L and a 6 L under-sink unit
- Suited to: buyers looking for small capacity storage and instant water heaters
1.5. Viessmann
Viessmann is a German heating company that opened a factory in Long Thanh district, Dong Nai province, on 22 June 2023, planning 300,000 devices in its first three years and exports of water heaters and purifiers. The plant produces water heating and purification equipment.
- Origin: Germany; the company was founded in 1917 and its heating technology business has been part of Carrier Global since 2023
- Vietnam plant: Long Thanh, Dong Nai
- Water heater range: water heaters alongside water purification equipment
- Suited to: buyers that want water heating and water treatment products from one supplier
1.6. Kangaroo
Kangaroo Group is a Vietnamese household appliance company established in 2003 that operates factories in Vietnam and Myanmar, including a plant in Van Giang district, Hung Yen province. The group is named among the major players in the Vietnam water heater market.
- Origin: Vietnam; headquartered in Hanoi
- Vietnam plant: Van Giang, Hung Yen
- Water heater range: water heaters within a catalogue of nearly 700 appliance models
- Suited to: distributors that want to bundle water heaters with other household appliances
1.7. Toan My
Toan My Producing Trading Corporation is a Vietnamese company based in Thuan An, Binh Duong province, and listed among Vietnam water heater manufacturers. The company focuses on solar water heaters.
- Origin: Vietnam
- Vietnam plant: Thuan An, Binh Duong
- Water heater range: solar water heaters
- Suited to: projects and distributors that need solar water heater systems
- Consider: electric water heaters are not the main focus
2. Which Water Heater Manufacturer in Vietnam Suits You?
Vietnamese water heater manufacturers differ mainly by product type, plant location and how well they suit OEM buyers. Electric water heater buyers who need flexible OEM terms will find the electric specialists more relevant, while solar projects should look at solar specialists. The table uses only the facts given in the profiles above.
| Manufacturer | Origin | Vietnam plant | Main water heater types | Suited to |
|---|---|---|---|---|
| SONHA Water Heater | Vietnam | Bac Ninh | Storage, instant, heat pump | Market-specific OEM, flexible volumes |
| Ariston | Italy | Bac Ninh | Electric | High-volume electric supply |
| Ferroli | Italy | Hanoi | Electric | European brand made in Vietnam |
| Tan A Dai Thanh (Rossi) | Vietnam | Ha Nam | Instant, storage 15–30 L | Small capacity storage |
| Viessmann | Germany | Dong Nai | Water heaters, purifiers | Combined heating and water treatment |
| Kangaroo | Vietnam | Hung Yen | Water heaters | Bundled household appliances |
| Toan My | Vietnam | Binh Duong | Solar | Solar water heater projects |
3. How We Selected These Water Heater Manufacturers in Vietnam
We selected each water heater manufacturer in Vietnam using five public criteria: production inside Vietnam, product range, export readiness, certifications and B2B flexibility.
- Production in Vietnam: the company runs a water heater factory Vietnam buyers can audit. Brands that only import, distribute or operate showrooms in the country were excluded.
- Product range: coverage of storage, instant, heat pump or solar water heaters.
- Export readiness: the ability to build 110 V or 220–230 V models with the right plug type and capacity for each market.
- Certifications: products tested to the IEC 60335-2-21 standard for electric storage water heaters and related parts, plus CB Scheme or CE marking.
- B2B flexibility: OEM/ODM support, private label packaging, trial orders and workable MOQs.
The order favours manufacturers that combine electric water heater production with flexible OEM terms, because that combination lets importers and distributors build their own range. A larger group may suit a buyer whose priority is brand recognition or very high volume, and the comparison table above helps match each supplier to a different need.
4. Why Importers Work with a Vietnam Water Heater Manufacturer?
Importers work with a Vietnam water heater manufacturer to access a growing production base, a mix of domestic and foreign-owned factories, and an alternative source that supports supply chain diversification. Manufacturing in Vietnam now covers electric, solar and heat pump water heaters for both local and export demand.
- Growing market: the Vietnam water heater market is valued at USD 263.1 million in 2025 and forecast to reach USD 588.7 million by 2034, a CAGR of 9.36%.
- Foreign investment in production: European groups have built water heater plants in Bac Ninh (2014) and Dong Nai (2023), alongside Vietnamese producers in the north and south of the country.
- Export hub: at least one multinational uses its Vietnam plant as the production hub for Asia Pacific while exporting to Europe and the US.
- Supply chain diversification: sourcing from Vietnam gives buyers a second production country alongside China, which reduces exposure to single-country risks such as tariff changes or port delays.
- Made in Vietnam label: a made in Vietnam origin can simplify market entry in countries that apply higher duties to some origins; buyers should check the current rules of their own customs authority.
For a distributor, the practical benefit is choice. A hot water heater manufacturer Vietnam-based buyers can visit, and that accepts trial orders, lets you test a new range in Mexico, Tanzania or Uruguay before committing to full containers, while larger plants can support volume once demand is proven.
5. How to Choose an Electric Water Heater Manufacturer in Vietnam?
To choose an electric water heater manufacturer in Vietnam, check five things in order: market configuration, certifications, factory quality control, OEM/ODM terms, and lead time with shipping costs. Working through these points before you place an order reduces the risk of warranty claims and customs delays.
5.1. Voltage, Plug Type and Capacity by Market
A water heater built for one country rarely works in another without changes, because voltage, plug type and preferred capacity vary by market. There are 15 types of electric plugs and outlets in use around the world, so the plug must be specified in the RFQ.
African markets generally prefer units under 30 L, while North and South American markets tend to choose 30 L and above; 50–100 L models often serve as a whole-home tank. A 110v water heater for Mexico needs a dedicated element and wiring, so confirm the factory already builds 110–127 V versions.
5.2. Certifications and Product Standards
Product certifications prove a water heater is safe for the target market, and each water heater type follows its own IEC part. Electric storage models fall under IEC 60335-1 and IEC 60335-2-21, while instantaneous water heaters are covered by IEC 60335-2-35 instead.
- Storage water heaters: IEC 60335-1 + IEC 60335-2-21
- Instant water heaters: IEC 60335-1 + IEC 60335-2-35
- Heat pump water heaters: IEC 60335-2-40, which covers sanitary hot water heat pumps
- Market approvals: CB Scheme, CE marking and any national certification or pre-shipment inspection required by the destination country
- Customs: electric storage water heaters are classified under HS code 8516.10
Ask for scanned certificates, the name of the issuing body and a test report for the exact model you plan to import.
5.3. Factory Audit and Quality Control
A factory audit confirms that a water heater factory can deliver consistent quality at your volume. Check production area and capacity, ISO 9001 certification, batch-level quality control and whether the factory accepts third-party inspection.
- Testing: 100% electrical testing at outgoing inspection, not sample testing only
- Tank build: enamel-coated inner tank, magnesium anode rod and PU foam insulation
- Heating element: Incoloy or similar corrosion-resistant sheath material
- Safety: ELCB earth leakage protection on storage and instant models
Build quality directly affects after-sales cost, because a tank water heater typically lasts approximately 8–12 years. A weak tank or element shows up as warranty claims for the distributor.
5.4. OEM/ODM Terms and Trial Orders
OEM/ODM terms decide how quickly a distributor can launch a private label range. Before signing, compare what each OEM water heater manufacturer offers on design rights, labelling, packaging and order size.
- Branding: custom labels, packaging design and user manuals in local languages
- Trial orders: small initial orders to test the market
- Golden sample: an approved reference unit that every production batch must match
- Acceptance: an agreed AQL level for pre-shipment inspection
- Support: spare parts supply, warranty handling and marketing support for distributors
Put these terms in the purchase contract rather than relying on email confirmations.
5.5. Lead Time, Incoterms and Shipping from Vietnam
Lead time, Incoterms and landed cost determine whether a water heater price is competitive once it reaches your warehouse. OEM orders usually take longer than standard models because of sample approval and custom packaging.
- Incoterms: FOB, CIF or CFR, depending on who arranges sea freight
- Payment: T/T deposit with balance before shipment or against the B/L, or L/C
- Landed cost: ex-works or FOB price + sea freight + import duty + certification costs
- Seasonality: demand peaks before winter, so place orders early when sourcing from Vietnam
6. Frequently Asked Questions
6.1. Which water heater manufacturers have factories in Vietnam?
Several companies produce water heaters in Vietnam, including SONHA Water Heater, Tan A Dai Thanh (Rossi), Kangaroo and Toan My, plus European groups with local plants. Ariston opened an electric water heater plant in Bac Ninh in 2014, Ferroli operates in Hanoi, and Viessmann opened a factory in Dong Nai in 2023. The comparison table above summarises each one.
6.2. How big is the water heater market in Vietnam?
The Vietnam water heater market was valued at USD 263.1 million in 2025 and is forecast to reach USD 588.7 million by 2034, a compound annual growth rate of 9.36% from 2026 to 2034. The market covers electric, solar, gas and heat pump water heaters for residential and commercial use.
6.3. Can a Vietnamese water heater manufacturer supply 110V models?
Yes. Vietnamese factories can build 110–127 V water heaters for North and South American markets, but the buyer must state voltage, frequency and plug type in the RFQ. Mexico, for example, uses 110–117 V and Type A plugs. At SONHA Water Heater, our storage models are available in 110–127 V versions in 50, 80 and 100 L.
6.4. What certifications should a Vietnam water heater manufacturer have?
A Vietnam water heater manufacturer should test products to IEC 60335-1 plus the part for each type: 60335-2-21 for storage, 60335-2-35 for instant and 60335-2-40 for heat pump units. CB Scheme reports, CE marking and the destination country’s national approval complete the set, while ISO 9001 shows the factory runs a documented quality system.
6.5. How long does an electric water heater last?
An electric tank water heater lasts approximately 8–12 years, and up to 15 years or longer with proper care. Lifespan depends on tank coating, anode rod condition, water quality and regular flushing, so build quality at the factory has a direct effect on how long units last in the field.
6.6. Does SONHA Water Heater offer OEM water heaters?
Yes. We offer OEM and ODM water heater manufacturing, including packaging and label design, trial orders and small to medium order volumes. Lead time is 30–45 days for standard products and 45–60 days for OEM/ODM orders, with FOB, CIF or CFR terms. Contact our export team to start a project.
No single water heater manufacturer in Vietnam suits every buyer. Match suppliers by product type, market configuration, certifications and OEM flexibility, then verify each claim with documents and a factory audit before placing an order.
For importers that need storage, instant or heat pump models configured for markets such as Mexico, Tanzania or Uruguay, we recommend starting with a sample and a trial order. Explore the SONHA Water Heater electric water heater range or contact our export team at:
- Email: export@sonha.com.vn
- WhatsApp: +84 983 604 297.
