# Electric Immersion Heater Onnline W-032 1/2" 300W with Thermostat (GRBT)

**URL:** https://aio.lv/en/product--onnline-w-032--11699937
**Data updated:** 2026-03-08 08:45 (EET)
**Category:** Water Heaters
**Manufacturer:** Onnline
**Manufacturer code:** W-032
**EAN:** 5907376060322
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 56.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 46.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--onnline-w-032--11699937

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Onnline W-032 electric immersion heater is a 1/2" threaded 300W heating element with an integrated thermostat (GRBT). Designed to heat liquids in small tanks, boilers or containers, it provides controlled temperature regulation via the built-in thermostat. Suitable for domestic and light industrial use where a compact, screw-in 300 W heater is required.

## Long description

Onnline W-032 electric immersion heater is a compact 300 W screw-in heating element designed to heat liquids in small tanks, boilers and containers. The device features a 1/2" threaded connection and an integrated thermostat (GRBT) that enables controlled temperature maintenance for domestic and light industrial applications where a compact, reliable heater is required.
Advantages
The heater combines a low-power 300 W element with an integrated thermostat, offering precise temperature control and reduced energy consumption for small-volume heating tasks. Its 1/2" threaded design ensures a secure and straightforward installation into compatible tanks and vessels. The compact form factor and durable construction support continuous use in applications that require stable liquid temperatures without large or complex equipment.
Suitable for
Heating water in small boilers and domestic tanks
Maintaining temperature in laboratory containers and small process vessels
Supplemental heating in aquaculture or horticultural water systems
Light industrial applications with low-volume liquid heating requirements
Key specifications
Power: 300 W
Thread size: 1/2" screw-in connection
Integrated thermostat type: GRBT
Intended medium: liquids (water and similar low-viscosity fluids)
Mounting: direct immersion into tank or container via threaded port
How to use
Install the immersion heater by screwing it into a compatible 1/2" threaded port on the tank or container. Ensure the heater is fully submerged in liquid before applying power to avoid dry heating. Connect the electrical supply following local wiring standards and the product's safety instructions, and set the built-in thermostat to the required temperature. Monitor the first heating cycle to confirm correct thermostat operation and secure mounting.
Usage recommendations
Use the heater only in liquids for which the element is rated, avoid operation in corrosive or highly viscous fluids, and ensure continuous liquid coverage of the heating element. Regularly inspect the connection seal and electrical wiring, and follow local electrical safety regulations during installation and maintenance.

## FAQ

### How much does the Onnline W-032 Electric Immersion Heater 1/2" 300W cost, and is it available for purchase?

The price is 56.49 € (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 15.07.2026 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. All transactions are 100% secure and encrypted.

### 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 Onnline 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 Onnline 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/11699937/67083138_large.webp