# Water heater Galmet SGW(S)B Tower Biwal 400 — bi‑valent storage tank, 400 L capacity

**URL:** https://aio.lv/en/product--galmet-26-409000n--11888049
**Data updated:** 2026-03-09 21:11 (EET)
**Category:** Water Heaters
**Manufacturer:** Galmet
**Manufacturer code:** 26-409000N
**EAN:** 5901224557194
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 383.49 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 1 143.38 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--galmet-26-409000n--11888049

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

Galmet SGW(S)B Tower Biwal 400 is a bi‑valent storage water heater with a 400‑litre tank designed for combined heat sources. It functions as a domestic hot water accumulator compatible with central heating systems and auxiliary heaters, enabling efficient hot water delivery for large households or small commercial sites. Key terms: bi‑valent storage tank, domestic hot water, 400 L capacity, integration with heating systems.

## Long description

Galmet SGW(S)B Tower Biwal 400 is a bi‑valent storage water heater with a 400‑litre tank engineered for integration with central heating systems and auxiliary heat sources. Designed as a domestic hot water accumulator, it stores and supplies hot water reliably for large households or small commercial sites. The unit supports combination use of primary and secondary heat sources to improve system flexibility and efficiency while maintaining a stable domestic hot water supply.
Advantages
The bi‑valent design allows connection of two heat sources, enabling seamless switching or simultaneous use of a central boiler and an auxiliary heater. A 400 L capacity ensures extended availability of hot water, reducing cycling of heat sources and improving energy management. Constructed for compatibility with standard heating installations, the heater offers straightforward hydraulic integration and steady thermal storage for domestic hot water needs.
Suitable for
Large households with high hot water demand
Small commercial sites such as guesthouses, offices, or workshops
Systems combining a central heating boiler and an auxiliary heat source (e.g., solar, heat pump, or electric heater)
Key specifications
Tank capacity: 400 litres
Type: bi‑valent (two heat source) storage water heater
Application: domestic hot water accumulator compatible with central heating systems
Installation orientation: upright tower design
Intended use: combined operation with primary and auxiliary heat sources for DHW supply
How to use
Install the Galmet SGW(S)B Tower Biwal 400 in vertical orientation according to local standards and manufacturer installation guidelines. Connect the primary heat source (central heating boiler or similar) to the designated inlet and the auxiliary heater to the secondary inlet. Ensure correct hydraulic balancing, appropriate safety devices, correct expansion vessel sizing and proper temperature controls are fitted. Commission the system by filling, venting, and gradually heating the tank while checking for leaks and correct operation of valves and sensors.
Usage recommendations
Use thermostatic mixing valves at delivery points to maintain safe tap temperatures and reduce scalding risk. For systems with variable renewable input (solar or heat pump), configure control logic to prioritise auxiliary or primary source according to availability and efficiency. Periodic inspection of anode protection (if applicable), insulation integrity and connections will help maintain performance and prolong service life.

## FAQ

### How much does the Galmet SGW(S)B Tower Biwal 400 water heater cost, and is it available for purchase?

The price is 1,383.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 21.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Galmet SGW(S)B Tower Biwal 400 water heater be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Galmet products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Galmet service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11888049/67309176_large.webp