Junkers Bosch Therm 4304 11 gas water heater
760€ installed · VAT incl.
Description
Open-flued gas water heater with 11 l/min: covers one bathroom and the kitchen (one outlet at a time).
The price includes the unit, VAT and installation. It is installed by our own accredited technicians, which is what activates the manufacturer’s warranty. Quote via WhatsApp from photos or a video; a free visit only if needed, in Barcelona and the metropolitan area.
Who is the Therm 4304 11 for?
It is the Junkers Bosch open-flue water heater with hydro-generator ignition: it lights by itself when you open the tap, with no plug or batteries. Designed to replace an open-flue water heater.
- No batteries or plug: the hydro-generator supplies the power when you open the tap.
- LCD display with water temperature and fault codes.
- Blue-flame premix burner with low NOx emissions.
- Standard Junkers connections and ready for 20% hydrogen.
All the water heaters we install
| Model | Type | Flow | For | Installed price |
|---|---|---|---|---|
| Therm 6600 S 12 | Room-sealed | 12 l/min | a shower and another tap at the same time | 940€ |
| Therm 6600 S 15 | Room-sealed | 15 l/min | two showers at the same time | 1.000€ |
| Therm 6600 S 17 | Room-sealed | 17 l/min | two showers at the same time | 1.100€ |
| Therm 3600 S 11 | Room-sealed | 11 l/min | one shower | 740€ |
| Therm 4304 11 | Open-flue | 11 l/min | one shower | 760€ |
| Therm 4204 5 | Open-flue | 5 l/min | a single tap, such as the kitchen sink | 650€ |
| Therm 4204 11 | Open-flue | 11 l/min | one shower | 740€ |
| Therm 4204 14 | Open-flue | 14 l/min | a shower and another tap at the same time | 800€ |
Price including VAT and installation. Flow is for water heated by 25 °C, as the manufacturer measures it.
Technical specifications
| Brand | Junkers Bosch |
|---|---|
| Model | Therm 4304 11 |
| Hot water flow | 11 litres/min |
| Technology | Open-flue, low NOx |
| Warranty | 5-year written warranty on the installation, plus the manufacturer warranty |
What the price includes
- Water heater, VAT included
- Removal of the old heater, if there is one, and fitting of the new one
- Gas and water connection and flue
- Commissioning and 5-year written warranty on the installation
- Fixed written quote from photos or a video via WhatsApp; free visit only if needed
- Installed in less than a week from accepting the quote
- Our own technical service: 24-hour call-out on working days with a maintenance contract
How to read the specifications
- 11 litres per minute
- It is the hot water it delivers when heating it by 25 °C. As a guide, enough for one shower.
- Open-flue water heater
- It takes air from the room it is in and sends flue gases up a chimney. It can only be installed where regulations allow, usually to replace another open-flue unit.
What can change the price
Quoted separately, in writing and before we start:
- Adapting or replacing the flue if it does not meet current regulations.
- Moving the water heater or extending water or gas pipes.
- Changing gas type (natural gas, propane or butane).
More information
Frequently asked questions about the Therm 4304 11
What home is the Therm 4304 11 for? It delivers 11 litres per minute heating the water by 25 °C: as a guide, enough for one shower. Send us photos of your current water heater and we will confirm the size.
What does the price include? The water heater, VAT, removal of the old one, fitting, connection to gas and water and commissioning. Fixed written quote before we start.
Room-sealed or open-flue? This one is open-flue: it takes air from the room. It is mainly used to replace another open-flue unit where regulations allow; otherwise you need a room-sealed one, such as the Therm 3600 S.
How long does the replacement take? We give you the timescale in writing in the quote, which we prepare from the photos you send us on WhatsApp.
See all the Junkers Bosch models we install in Barcelona →
Compare the Therm 4304 11 with other models in our comparison tool →
See all the Junkers Bosch models we install in Barcelona →
Compare the Therm 4304 11 with other models in our comparison tool →