Vaillant ecoTEC exclusive VMW 43CF/1-7 boiler
5.230€ installed · VAT incl.
Description
Wall-mounted condensing boiler: 36 kW for heating and 42.8 kW for domestic hot water, with the sensoCOMFORT thermostat included.
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.
12 instalments of €435.83. The first one is €592.73, as it includes the 3% opening fee.
Nominal rate 0%, APR 5.78%. Total amount: €5,386.90. Financing through BBVA, subject to the bank's approval.
Who is the ecoTEC exclusive VMW 43CF/1-7 for?
It is Vaillant’s top-of-the-range boiler. Its ExtraCondens technology also uses condensation when heating water, with extra savings of up to 10% on hot water according to the manufacturer. Designed for homes with two or more bathrooms.
- ExtraCondens for both heating and hot water.
- myVAILLANT app control.
- Adapts by itself to changes in gas type; accepts up to 20% hydrogen and 100% biomethane.
- 94% seasonal space-heating efficiency.
All ecoTEC exclusive outputs
| Model | Heating | Hot water | Installed price |
|---|---|---|---|
| ecoTEC exclusive VMW 30CF/1-7 | 23.9 kW | 30 kW | 4.560€ |
| ecoTEC exclusive VMW 36CF/1-7 | 27.1 kW | 36.4 kW | 4.780€ |
| ecoTEC exclusive VMW 43CF/1-7 | 36 kW | 42.8 kW | 5.230€ |
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.
ecoTEC exclusive VMW 43CF/1-7 compared with similar boilers
| ecoTEC exclusive VMW 43CF/1-7 | Condens 8700i W 35/40 | |
|---|---|---|
| Installed price | 5.230€ | 3.120€ |
| Heating / hot water | 36 / 42.8 kW | 35 / 40 kW |
| Hot water for | Two or more bathrooms, with showers at the same time | Two or more bathrooms, with showers at the same time |
| Brand | Vaillant | Junkers Bosch |
Both are installed with the same service and a fixed quote. The difference is price, features and hot-water comfort; if in doubt, send us a photo of your current boiler and we will tell you which fits.
Technical specifications
| Brand | Vaillant |
|---|---|
| Model | ecoTEC exclusive VMW 43CF/1-7 |
| Heating output | 36 kW |
| Hot water output | 42,8 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
- 36 kW heating
- Maximum output for the radiators. With the floor area and photos of the radiators we check it is right before confirming it.
- 42.8 kW hot water
- According to Vaillant, it delivers 20.4 litres per minute with the water heated by 30 °C: enough for two or more bathrooms, with showers at the same time.
- 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.
Vaillant boilers we have installed
Some of our recent Vaillant condensing boiler installations in Barcelona.


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 ecoTEC exclusive VMW 43CF/1-7
What home is the ecoTEC exclusive VMW 43CF/1-7 for? For a flat or house with radiators and two or more bathrooms, with showers at the same time: 36 kW of heating and 42.8 kW of hot water.
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, with the myVAILLANT app.
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 Vaillant models we install in Barcelona →
Compare the ecoTEC exclusive VMW 43CF/1-7 with other models in our comparison tool →
See all the Vaillant models we install in Barcelona →
Compare the ecoTEC exclusive VMW 43CF/1-7 with other models in our comparison tool →




