Junkers Bosch Condens 4300i W P 24 boiler (heating only)
1.810€ installed · VAT incl.
Description
Wall-mounted heating-only condensing boiler: 24 kW, for homes with a separate storage tank or electric water heater.
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 Condens 4300i W P 24 for?
It is Junkers Bosch’s condensing boiler designed to replace an old boiler without altering the installation: it keeps the dimensions and connection layout of earlier models.
- Built-in Wi-Fi: controlled with the Bosch EasyControl app.
- HMI 300 display with text that explains each option.
- Compact: Bosch designs it to fit inside or between kitchen cabinets.
- 94% seasonal space-heating efficiency, according to the manufacturer.
All Condens 4300i W outputs
| Model | Heating | Hot water | Installed price |
|---|---|---|---|
| Condens 4300i W P 24 | 24 kW | Heating only | 1.810€ |
| Condens 4300i W 24/25 | 24 kW | 25 kW | 1.830€ |
| Condens 4300i W 24/30 | 24 kW | 30 kW | 2.100€ |
Price including VAT and installation. When choosing, hot water matters most: send us photos of your current boiler and we will tell you the output you need.
Technical specifications
| Brand | Junkers Bosch |
|---|---|
| Model | GC4300i W P 24 |
| Heating output | 24 kW |
| Technology | Condensing, wall-mounted, natural gas |
| Warranty | 5-year written warranty on the installation, plus the manufacturer warranty |
What the price includes
- Boiler, VAT included
- Removal of the old boiler, if there is one
- Fitting and connection to gas, water and electricity
- Installation or adaptation of the room-sealed flue (coaxial pipe)
- Commissioning, performance check and 5-year written warranty on the installation
- Fixed written quote from photos or a video via WhatsApp; free technical 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
- 24 kW heating
- Maximum output for the radiators. With the floor area and photos of the radiators we check it is right before confirming it.
- Heating only
- This version does not heat water directly: it connects to an external cylinder, or is used when hot water already comes from another appliance, such as an electric water heater or a heat pump.
- Condensing
- It recovers heat from the steam in the flue gases, which is why it needs a drain for the condensate.
- 94% seasonal efficiency
- Average space-heating efficiency over the year, according to the manufacturer.
Junkers Bosch boilers we have installed
Some of our recent Junkers Bosch condensing boiler installations in Barcelona.
A thermostat for your boiler: Bosch OR 100 RF or EasyControl CT 200
When you buy your Junkers Bosch Condens 4300i W P 24 boiler, for only €100 more we install the Bosch OR 100 RF thermostat: a wireless programmable room thermostat using radio frequency, with Comfort, Eco and Auto modes, weekly time programming and a boost heating mode. It runs on batteries and talks to the boiler without cables.
If you would rather control it from your phone, we install the Bosch EasyControl CT 200 Wi-Fi thermostat with your boiler for 195€ more (€100 less than installing it separately): a programmable modulating thermostat with Wi-Fi, controlled with the Bosch EasyControl app.
Choose either one in “Configure your unit” above: the price updates automatically.
What can change the price
The price includes removing the old boiler and a standard room-sealed flue. The following are quoted separately, in writing and before we start:
- A long flue run or one that does not meet current regulations.
- A condensate drain if there is none nearby.
- Moving the boiler to another place.
- A Wi-Fi thermostat or programmer, if not included.
- Cleaning the circuit or replacing radiators and valves.
More information
Frequently asked questions about the GC4300i W P 24
What home is the Condens 4300i W P 24 for? For homes with radiators where hot water comes from an external cylinder or another appliance: 24 kW of heating.
What does the price include? The boiler, VAT, removal of the old one, fitting and connection to gas, water and electricity, a standard room-sealed flue and commissioning. Fixed written quote before we start.
Can it be controlled from a phone? Yes. It has built-in Wi-Fi and works with the Bosch EasyControl app. It also accepts thermostats such as the EasyControl CT 200.
How long does a boiler replacement take? Fixed quote the same day from the photos you send us on WhatsApp (if a visit is needed, within 24-48 hours) and replacement in a single day. From November to January it is best to book ahead.
Are there grants for replacing the boiler? It depends on the call currently open in Catalonia. If there is one, we provide the installation documents.
See all the Junkers Bosch models we install in Barcelona →
Compare the GC4300i W P 24 with other models in our comparison tool →
See all the Junkers Bosch models we install in Barcelona →
Compare the GC4300i W P 24 with other models in our comparison tool →