Vaillant ecoTEC plus VMW 23CS/1-5 C boiler
2.940€ installed · VAT incl.
Description
Wall-mounted condensing boiler: 21 kW for heating and 23 kW for domestic hot water, with the sensoHOME 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.
Who is the ecoTEC plus VMW 23CS/1-5 for?
It is Vaillant’s mid-range condensing boiler: more efficient and better equipped than the ecoTEC pure, with a touch screen and app control. It uses the existing gas connections, so the replacement is usually quick.
- IoniDetect: adjusts combustion to the gas type by itself.
- Flat design and touch screen; app control.
- High modulation: runs at low output when the home needs little heat.
- Compatible with blends of up to 20% hydrogen and with hybrid systems (solar or heat pump).
All ecoTEC plus outputs
| Model | Heating | Hot water | Installed price |
|---|---|---|---|
| ecoTEC plus VMW 23CS/1-5 | 21 kW | 23 kW | 2.940€ |
| ecoTEC plus VMW 26CS/1-5 | 21 kW | 25.7 kW | 3.090€ |
| ecoTEC plus VMW 32CS/1-5 | 27 kW | 31.8 kW | 3.750€ |
| ecoTEC plus VMW 36CS/1-5 | 32.6 kW | 35.6 kW | 4.140€ |
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 plus VMW 23CS/1-5 compared with similar boilers
| ecoTEC plus VMW 23CS/1-5 | ecoTEC pure VMW 236/7-2 | Thema MiConnect 26-CS/1-C | |
|---|---|---|---|
| Installed price | 2.940€ | 2.140€ | 2.840€ |
| Heating / hot water | 21 / 23 kW | 20.2 / 24 kW | 21.7 / 26 kW |
| Hot water for | One bathroom | One bathroom | One or two bathrooms |
| Brand | Vaillant | Vaillant | Saunier Duval |
All three 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 plus VMW 23CS/1-5 C |
| Heating output | 21 kW |
| Hot water output | 23 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
- 21 kW heating
- Maximum output for the radiators. With the floor area and photos of the radiators we check it is right before confirming it.
- 23 kW hot water
- According to Vaillant, it delivers 11 litres per minute with the water heated by 30 °C: enough for one bathroom.
- 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 plus VMW 23CS/1-5 C
What home is the ecoTEC plus VMW 23CS/1-5 for? For a flat or house with radiators and one bathroom: 21 kW of heating and 23 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, Vaillant prepares it for app control with its smart controls. We will tell you which control you need for your installation.
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 plus VMW 23CS/1-5 C with other models in our comparison tool →
See all the Vaillant models we install in Barcelona →
Compare the ecoTEC plus VMW 23CS/1-5 C with other models in our comparison tool →