# Radiator Thermostat DANFOSS RTW-K 8–28 °C mechanical (MPN 013G6505)

**URL:** https://aio.lv/en/product--danfoss-013g6505--1482789
**Data updated:** 2026-03-07 10:59 (EET)
**Category:** Heating Radiators
**Manufacturer:** DANFOSS
**Manufacturer code:** 013G6505
**EAN:** 5702425117909
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 26.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 22.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--danfoss-013g6505--1482789

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Mechanical radiator thermostat DANFOSS RTW-K provides room temperature regulation in the range of 8–28 °C. Designed for direct mounting on radiator valves, it offers simple manual control of heating output without electronics or external power. Suitable for residential and commercial heating systems to maintain comfort, reduce overheating and enable basic zone temperature control.

## Long description

The mechanical radiator thermostat DANFOSS RTW-K 8–28 °C is a manually operated valve head designed to regulate room temperature by controlling the flow of hot water through radiator valves. The unit provides a simple and reliable way to maintain temperatures between 8 and 28 °C without the need for electricity or electronic control. Constructed for direct mounting on standard radiator valves, the RTW-K offers intuitive rotary adjustment and a visible temperature scale for straightforward operation in residential and light commercial heating systems.
Advantages
The DANFOSS RTW-K thermostat delivers stable temperature control using a robust mechanical sensing element that responds directly to ambient room temperature. Its operation is independent of power supply and electronics, which reduces installation complexity and long-term maintenance. The compact design and clearly marked temperature range make it easy to set desired comfort levels and avoid overheating. Durable materials and a straightforward mechanical mechanism contribute to long service life and predictable performance.
Suitable for
 Individual room temperature control on panel radiators
 Retrofit replacement of existing mechanical thermostat heads
 Residential apartments, houses and small commercial spaces
 Basic zoned heating setups without electronic thermostatic control
Key specifications
 Adjustment range: 8–28 °C
 Type: mechanical, manually operated thermostatic head
 Mounting: direct fit to standard radiator valve bodies
 Control method: rotary knob with marked temperature positions
 Power: no external power or batteries required
 Intended application: hot-water radiator heating systems
How to use
Attach the RTW-K thermostat head directly to a compatible radiator valve according to the valve manufacturer’s mounting instructions. Once mounted, rotate the control knob to align the indicator with the desired temperature mark within the 8–28 °C scale. The mechanical element inside the head senses room temperature and modulates the valve position to maintain the setpoint. Periodically check the mounting and clean the exterior to ensure the sensing element is not obstructed by curtains, furniture or dust.
Usage recommendations
For accurate room regulation, install the thermostat head on a radiator where airflow is not blocked and away from direct sunlight, drafts or heat sources. When replacing an existing head, confirm compatibility with the valve spindle and follow safe isolation of the heating system if required. Use the RTW-K in conjunction with a sensible heating schedule to reduce energy waste and avoid setting overly high temperatures that can lead to overheating.

## FAQ

### How much does the DANFOSS RTW-K mechanical radiator thermostat 8–28 °C cost, and is it available for purchase?

The price is 26.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 03.07.2026 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 DANFOSS 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 DANFOSS 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/1482789/68525828_large.webp