# Water heater tank Saunier Duval SEW-1-400

**URL:** https://aio.lv/en/product--saunier-duval-9145996--11888043
**Data updated:** 2026-03-09 21:11 (EET)
**Category:** Water Heaters
**Manufacturer:** Saunier Duval
**Manufacturer code:** 9145996
**EAN:** 4045013182011
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2 524.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 2 086.77 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--saunier-duval-9145996--11888043

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

Storage water heater tank Saunier Duval SEW-1-400 designed to store and supply hot domestic water. As a buffer/storage tank, it integrates with heating systems to ensure steady hot water availability, reduce pump cycling and support DHW distribution. Suitable for residential or light commercial installations requiring thermal storage and improved system efficiency.

## Long description

The Saunier Duval SEW-1-400 storage water heater tank is designed to store and supply domestic hot water and to act as a thermal buffer within heating and DHW systems. Constructed for integration with residential and light commercial installations, this tank supports steady hot water delivery, reduces on/off cycling of pumps and boilers, and helps maintain system stability during peak demand periods.
Advantages
The tank provides thermal storage capacity that evens out temperature fluctuations and improves the efficiency of connected heating equipment. Its compatibility with common domestic hot water distribution systems reduces pump cycling and wear on heat generators. The SEW-1-400 design is intended for straightforward installation in systems where a separate DHW buffer or storage vessel is required, offering predictable performance for balancing supply and demand.
Suitable for
Residential homes with central heating and separate DHW circuits
Light commercial properties needing hot water buffering
Systems where reduced pump cycling and smoother temperature control are desired
Key specifications
Function: Domestic hot water storage and thermal buffering
Nominal volume: 400 liters (storage capacity)
Application: Integration with central heating and DHW distribution systems
Purpose: Reduce pump/boiler cycling and provide consistent hot water supply
Installation: Indoor mounting as part of heating/DHW installations
How to use
Connect the SEW-1-400 tank to the heating circuit and domestic hot water distribution according to the project design and local plumbing codes. Ensure correct hydraulic connections for inlet, outlet and any recirculation return lines; install appropriate isolation valves, safety devices and expansion measures as required by the system. Commission the tank together with the boiler or heat source, checking for correct flow direction, pressure limits and temperature control settings before regular operation.
Usage recommendations
Use the tank as part of a properly sized system: verify that the 400-liter capacity matches expected hot water demand and heating source output. Schedule routine inspections for corrosion protection, insulation integrity and valve operation. Follow local regulations for safety devices, expansion vessel sizing and temperature/pressure relief arrangements to ensure safe and reliable operation.

## FAQ

### How much does the Water heater tank Saunier Duval SEW-1-400 cost, and is it available for purchase?

The price is 2,524.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 10.07.2026 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 Water heater tank Saunier Duval SEW-1-400 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 Saunier Duval 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 Saunier Duval 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/11888043/67309171_large.webp