# Electric Heater Onnline W-033, 1/2" connection, 600W, with thermostat, model GRBT

**URL:** https://aio.lv/en/product--onnline-w-033--11700180
**Data updated:** 2026-03-08 08:46 (EET)
**Category:** Heating Radiators
**Manufacturer:** Onnline
**Manufacturer code:** W-033
**EAN:** 5907376060339
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 63.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 52.47 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--onnline-w-033--11700180

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Onnline W-033 is an electric immersion heater with 1/2" connection and 600W power, equipped with a built-in thermostat (GRBT). Designed for heating liquids in small tanks or containers where a compact, direct-immersion heating element is required. Suitable for controlled temperature maintenance and straightforward installation into compatible threaded fittings.

## Long description

Onnline W-033 is an electric immersion heater designed for direct heating of liquids in small tanks and containers. The unit features a 1/2" threaded connection and a 600 W heating element with an integrated thermostat (GRBT) to maintain set temperatures. Its compact form factor allows installation in confined spaces where controlled, localized heating is required.
Advantages
The heater combines a moderate 600 W power rating with a built-in thermostat for precise temperature control, reducing the need for external regulation. The 1/2" connection provides compatibility with common threaded fittings, enabling quick and straightforward installation. The compact immersion design minimizes heat loss and concentrates heating where it is needed, while the integrated thermostat helps prevent overheating and reduces energy consumption during steady-state operation.
Suitable for
Heating water and other low-viscosity liquids in small tanks and containers
Temperature maintenance in laboratory baths and process vessels
Domestic and light industrial applications requiring compact immersion heating
Key specifications
Rated power: 600 W
Connection type: 1/2" threaded immersion fitting
Integrated thermostat: yes (GRBT)
Application: direct immersion heating of liquids
Form factor: compact tubular heating element
How to use
Install the heater into a compatible 1/2" threaded fitting on the tank or container, ensuring the heating element is fully immersed in the liquid before applying power. Connect the electrical supply according to local regulations and the device wiring requirements. Set the thermostat to the desired temperature and allow the unit to reach equilibrium; the built-in thermostat will cycle the heater to maintain the set temperature. Regularly inspect the element for scale or deposits and remove power before performing any maintenance.
Usage recommendations
Use the heater only in liquids compatible with its materials and within the intended temperature range. Ensure full immersion of the heating element during operation to avoid dry heating. Follow local electrical codes for wiring and grounding, and schedule periodic inspection for buildup or corrosion to preserve performance and safety.

## FAQ

### How much does the Onnline W-033 electric heater 1/2" 600W cost, and is it available for purchase?

The price is 63.49 € (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 09.07.2026 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/11700180/67083304_large.webp