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Vaillant VU 25CS/1-5 ecoTEC plus IoniDetect + VIH R 120 B + sensoCOMFORT 720

Code: 0010044674
The average product rating is 5,0 out of 5 stars. 1 rating Rating details
3 570 € –19 %
1043 vaillant vu 25cs 1 5 ecotec plus ionidetect vih r 120 b sensocomfort 720
3 570 € –19 % 2 870,64 € / pcs Measure price:
1 week

Detailed information

Product detailed description

Vaillant VU 25CS/1-5 ecoTEC plus IoniDetect kit
+ ecoTEC plus IoniDetect - condensing boiler
+ uniSTOR VIH R 120 B - hot water tank
+ sensoCOMFORT 720 - weather-compensating controller 
+ hot water temperature sensor in the tank
+ spacer frame under the boiler
 
Note: The connection between the boiler and the tank is not included in the kit.

VAILLANT VU 25CS/1-5 ecoTEC plus IoniDetect
- wall-mounted condensing boiler 
- output: 2,5 - 24,7 kW  

Modulation ratio 1:10

 
We've made our best-selling boiler even better - using the latest technologies that provide a reliable heating solution for the future. Its excellent price-to-performance ratio makes it a really good choice. Proven quality guarantees a long service life, while innovative features increase its efficiency. All of this contributes to a significant reduction in your costs.
 
Be ready for changes in gas composition
Thanks to the new IoniDetect combustion control technology, the boiler itself recognises fluctuations in gas composition, is able to adapt and always works as efficiently as possible. This feature will be most appreciated in the future, when more eco-friendly gas blends are used.
 
Upgrade your system with renewable sources
The new ecoTEC plus provides a sustainable heating solution. Especially in combination with the sensoCOMFORT system controller, you can optimally set up your heating system - and thereby save energy and heating costs. Thanks to the new installation assistant, you can ensure your boiler always works with maximum efficiency while giving you maximum comfort. For greater sustainability, you have the option of adding various flexible ways to expand the system with renewable energy sources: solar heating, heat pumps, or ventilation systems with heat recovery. Their shared eBUS communication language allows for easy installation and control of the entire system.
 
Remote control for greater comfort and efficiency
It only takes a few steps to control your new heating system via an online app from anywhere. You just need to add the sensoNET internet module to the boiler, which you connect to your boiler with a trouble-free plug-and-play system (i.e. it works right after connecting) and download our free app. You can then control it, for example, even on your way to a holiday. This option isn't just for your comfort. Since your heating runs at full power only when you actually need it, you save energy, money, and the environment.
 
Convenient heating monitoring
Do you like being in control of your energy consumption? Especially in combination with the sensoCOMFORT system controller, you can fully control your boiler and have detailed consumption data at hand. Thanks to the new user interface with touch controls, monitoring your boiler's operation becomes more convenient than ever. Enjoy our modern design and user menu for intuitive, trouble-free operation.
 
 
PARAMETERS
Heating
Rated heat output range at 50/30 °C: 2,8 - 26,4 kW
Rated heat output range at 80/60 °C: 2,5 - 24,7 kW
Max. heating heat input: 25,5 kW
Min. heating heat input: 2,7 kW
Max. DHW heat output: 27,5 kW
Nominal heat input: 28,3 kW
Rated heating heat input range: 2,7 - 25,5 kW
NOx class: 6
Max. flow temperature: 85°C
Max. flow temperature setting range (factory setting: 75 °C): 15 - 80°C
Max. operating pressure, heating: 0,3 MPa (3,0 bar)
Rated circulating water flow rate at ΔT = 20 K: 1060 l/h
Residual pump head at rated circulating water flow rate: 0,025 MPa (0,25 bar)
 
Electrical parameters
Rated voltage / mains frequency230 V / 50 Hz
Electrical protection rating: IPX4D
 
DIMENSIONS
Gas connection on the boiler side: 15 mm
Heating flow/return connections on the boiler side: G 3/4"
Tank heating flow/return connections on the boiler side: G 1/2"
Safety valve connection: 15 mm
Condensate drain hose: 19 mm
Dimensions (width x height x depth): 440 x 720 x 348 mm
Weight (without packaging, without water): 34 kg
 
 
VAILLANT uniSTOR VIH R 120 B
- indirectly heated stationary DHW tank
- with enamelled surface protection against corrosion
- volume: 117 l
 
 
Product characteristics
  • energy class B
  • stationary steel DHW tank
  • designed for wall-mounted or floor-standing boilers
  • floor-standing design
  • standard class B thermal insulation
  • drain valve
  • adjustable levelling feet
  • the tank and the heating coil are enamelled on the inside
  • built-in protective magnesium anode
 
Parameters
  • Nominal volume: 117 l
  • Heat exchanger surface area: 0,7 m2
  • Water volume in the heat exchanger: 4,8 l
  • Max. output: 30,9 kW
  • Continuous DHW output: 527 l/h
  • DHW heating time from 10 to 60 °C: 15,8 min
  • Max. DHW temperature: 85 °C
  • Max. heating water temperature: 110 °C
  • Max. operating pressure: 10 bar
  • Heat loss1,0 kWh/24 hod
  • Heat exchanger connection: R 3/4"
  • DHW connection: R 1"
  • Circulation connection: R 3/4"
  • Height: 853 mm
  • Length: 590 mm
  • Weight: 68 kg
 
 
VAILLANT sensoCOMFORT 720 - weather-compensating controller
 
Our new weather-compensating controller sensoCOMFORT gives you complete control over your heating system and is both intuitive and smart. Combined with our internet sensoNET module and sensoAPP application it lets you control your heating - at home and on the go.
 
Customise your comfort in just a few clicks
Thanks to the new high-resolution display of the sensoCOMFORT and its 3,5-inch screen operating your heating becomes more convenient than ever before. Six touch buttons, convenient scrolling, and a backlight function make control easier even in dark spaces. Clear navigation and settings are made possible by a clear menu structure and heating system customisation via the installation assistant function. And if you're missing any information, use the help button. With the sensoAPP application on your smartphone or tablet, you can control your heating from anywhere via a wifi connection: set precise temperatures, define time intervals to the minute, and use other special functions, such as absence mode.
 
Upgrade your heating system with renewable sources
From solar systems to ventilation. With the smart sensoCOMFORT controller, you get future-proof system control. The controller is optimised to control all components of the heating system at the same time, and you can conveniently adjust the system according to your needs, e.g. domestic hot water. The sensoCOMFORT controller gives you the ability to manage several heating circuits, and thus more complex heating systems, such as in multi-generational family homes.
 
Coordinated system design for maximum ease of use
Our new generation of gas boilers and controllers (including the sensoCOMFORT controller) have one thing in common: a coordinated menu structure, including the sensoAPP application. So once you find your way around one menu structure, you're familiar with them all - which definitely makes operating your new heating system easier.
 
Designed for your modern home
A system controller should naturally suit your interior. The modern design is eye-catching and recognisable, as it resembles modern smart devices. This way it blends perfectly into modern living spaces. The same applies to our sensoAPP application. It builds on the previous multiMATIC app - which won the Red Dot Design Award.
 
 
Parameters
  • Energy efficiency class: II, VI, VIII
  • Design: wired
  • Installation: wall-mounted
  • eBUS interface: yes
  • Gas boilers: yes
  • Heat pumps: yes
  • Hybrid systems: yes
  • Number of boilers in cascade: 2 - 7
  • Central ventilation: yes
  • Solar heating: yes
  • Number of heating circuits using expansion modules: 9
  • Number of remote controls: 4
  • Control via the sensoAPP application: yes
  • Heating curve adjustment: yes
  • Floor drying function: yes
  • Air humidity sensor: yes
  • Installation assistant function: yes
  • Time-program assistant function: yes
 

Frequently asked questions

  • How exactly do I choose the output of a VAILLANT condensing boiler? The basis is the calculated heat loss of the heated building (most reliably from the project documentation or an energy certificate). If you don't have a project, you can estimate roughly 60-100 W per m² of floor area for a normally insulated house built after 2000, or 100-150 W/m² for an older, uninsulated house - the exact figure varies depending on the number of floors, ceiling height, the number and quality of windows, and the building's orientation. A boiler that is oversized for its output switches on and off more often (so-called cycling), which shortens its lifespan and reduces efficiency; conversely, an undersized boiler won't be able to heat the house sufficiently on freezing days.
  • Why is a condensing boiler more economical than a conventional one? A condensing boiler also makes use of the heat hidden in the water vapour produced when gas is burned - in a conventional boiler this escapes unused through the flue, whereas in a condensing boiler it is cooled below the so-called dew point, the vapour condenses, and the released heat is returned to the heating circuit. Thanks to this, condensing boilers achieve an efficiency of around 105-110% relative to the calorific value of the gas, compared to the usual 85-92% for conventional boilers.
  • What type of flue gas discharge does this boiler need? Most modern condensing boilers are so-called turbo units (with a sealed combustion chamber) and require a concentric or separate flue gas discharge and combustion air intake routed through an exterior wall or roof - so a functioning chimney is not needed. You can find the exact type and maximum length of the flue (depending on the 60/100 or 80/125 mm diameter) in the technical documentation for the specific model, or consult our customer service.
  • What does the ErP energy class shown for the boiler mean? This is a mandatory efficiency label for heating appliances under the EU ErP (Ecodesign) directive, similar to the energy labels found on refrigerators. Condensing boilers commonly achieve class A, or even higher in combination with room controls (e.g. A+ when using weather-compensating control and a room thermostat).
  • Can I install and connect this boiler myself? No. Connection to the natural gas supply, the electrical network, and the flue gas discharge must, by law, be carried out exclusively by a person with the relevant qualification (most often an authorised service technician for the given brand or a gas appliance inspection technician). After installation, the boiler must be commissioned by the manufacturer's authorised service, which is usually also a condition for the warranty to be valid.
  • What about servicing and the warranty? Most manufacturers require a regular annual service inspection by an authorised service provider in order for the warranty to remain valid even after its standard expiry (an extended warranty for regular servicing is common especially with the Vaillant, Protherm, and Viessmann brands). You can find the exact warranty terms in the warranty certificate supplied with the boiler.
  • What is included in the delivery of this specific product? The exact package contents (the boiler itself, and, in the case of a kit, the hot water tank, room controls, and other accessories) are stated in the product name and its technical parameters above on this page.

Additional parameters

Category: Vaillant ecoTec plus, pro
Warranty: 2 years
Weight: 60 kg
Safety thermostat: yes
Included accessories: power cable, siphon, manual, warranty card
Electrical protection rating: IPX4D
Electronic ignition: Yes
Electronics: eBus 2.0 (od verzie 2014)
Weight of empty boiler: 34 kg
Upper boiler output: 26,4 kW
Country of origin: EU
Summer mode: Yes
Maximum working pressure: 300 kPa
Maximum DHW pressure: 1 mPa
Storage tank connection option: yes
Extended warranty option: yes
Voltage/frequency: 230V/50Hz
Adjustable heating water temperature range: 15 - 80 °C
Standard efficiency rate at 40/30°C: max. 109,5 %
Fuel: natural gas / propane
Flue design: TURBO
Power output curve: modulated
Electrical voltage connection: 230V
Concentric flue connection: yes
Separate flue connection: yes
DHW connection port: 1/2"
Water connection port: 3/4"
Dimensions: 720 x 440 x 338 mm
Lower boiler output: 2,8 kW
Boiler commissioning: by a VAILLANT service technician
NOx emission class: 6
Boiler intended use: with the option to connect a storage tank, boiler set with a 120 l storage tank
DHW tank size: 117 l
Suitable for underfloor heating: yes
Output when heating DHW: 27,5 kW
Output at temperature drop 50/30°C: 2,8 - 26,4 kW
Output at temperature drop 80/60°C: 2,5 - 24,7 kW
DHW output: 27 kW
Built-in water filter: no
Boiler heating output: high output above 16 kW
Manufacturer: Vaillant

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K Avatar of author 01/02/2026 18:17
Dobry den, Mali by sme zaujem o kupu kotla Vaillant. Chcela by som Vas poprosit o cenovu ponuku na kotol + dopravu do 95133 Hajske + dostupnost. Velmi pekne dakujem a zelam pekny den. S pozdravom Katarina
A Avatar of author 01/02/2026 18:18
Dobrý deň, kotol je na objednávku, dostupnosť cca 7 dní. Cena kotla je ako je uvedené na stránke a cenu dopravy nájdete po vložení kotla do košíka. Pekný deň.
L Avatar of author 29/01/2026 11:10
Dobry den, plánujeme novou kotelnu v našem hotelu a rádi bychom udělali kaskadu z těchto kotlu. Je ta cena aktualni?
A Avatar of author 29/01/2026 11:11
Dobrý deň, áno, cena je aktuálna. Len chceme upozorniť, že všetky kotle, ktoré predávame, obsahujú záručný list v slovenskom jazyku. Kotol je určený pre slovenskú distribúciu, nie pre českú. Preto je nutné aby ste si najprv preverili, či servisný technik ktorý Vám bude kotol zapájať, nebude mať problém tento záručný list potvrdiť. Pekný deň.
V Avatar of author 27/01/2026 11:19
Dobry deň prosím vás aká je cena dopravy na túto zostavu VAILLANT VU 25CS/1-5 ECOTEC PLUS IONIDETECT + VIH R 120 B + SENSOCOMFORT 720, ďakujem
A Avatar of author 27/01/2026 11:20
Dobrý deň, cenu dopravy Vám ukáže v košíku. Pekný deň.
M Avatar of author 14/01/2026 18:26
Dobry den, Poprosil by som vas doporucenie prislusenstva ku kotlu VAILLANT VU 25CS/1-5 ECOTEC PLUS IONIDETECT Riadiace Jednotky aj magneticky ventil mam uz vybraty ten netreba iba potrebujem este: Odvod spalin do vyvlozkovaneho komina dlzka cca 12 metrov . Dakujem
A Avatar of author 14/01/2026 18:27
Dobrý deň, dymovod si môžete vyskladať tu : https://dymovod.sk/. Pekný deň.
P Avatar of author 21/11/2023 12:18
Dobrý deň, mam záujem o tento kotol so zásobníkom.Za ako dlho by bol dodaný od objednania? Ďakujem
A Avatar of author 23/11/2023 09:50
Dobrý deň, doba dodania je cca. 1-2 týždne. Vždy je upresnená na základe objednávky priamo dodávateľom. Pekný deň.
Avatar of author 12/09/2023 10:37
Dobry den, obsahuje tato zostava vsetko potrebne na montaz, alebo je potrebne dokupit napr. kominovu zostavu, pripojovacie potrubia, expanzku a pod. ? Dakujem.
A Avatar of author 22/09/2023 12:53
Dobrý deň, zostava obsahuje len tovar, ktorý je uvedený na stránke a teda kotol, zásobník a reguláciu. Pekný deň.
T Avatar of author 02/08/2023 13:24
Dobrý deň, mal by som záujem o tuto zostavu.Kedy je predbežný dátum dodania keď ho objednám dnes alebo pondelok.
A Avatar of author 02/08/2023 13:24
Dobrý deň, túto zostavu momentálne nemá ani dodávateľ je potrebné počítať s dlhšou dobou dodania cca. 3-4 týždne. Pekný deň.
C Avatar of author 09/12/2021 11:19
hello, I am interested in this valliant boiler. could you please recommend someone to install for me
A Avatar of author 09/12/2021 11:19
Hello, if you would like technician from Vaillant you can find them here :https://www.vaillant.sk/pre-zakaznikov/siet-partnerov/ Have a nice day.

O spoločnosti

Skupina Vaillant Group je synonymom vykurovania a prípravy teplej vody, pričom hlavný dôraz kladie na kvalitu, spoľahlivosť a užívateľský komfort. Jej produkty tepelnej techniky sú zastúpené vo viac ako 100 krajinách sveta. Združuje značky Vaillant, Saunier Duval, AWB, Bulex, DemirDöküm, Glow worm, Hermann Saunier Duval a Protherm. Každá z týchto značiek má s výrobou vykurovacích zariadení bohaté skúsenosti, pretože väčšina z nich je v danom segmente viac ako 80 rokov. So svojím 140 rokov dlhým pôsobením na trhu však patrí hlavne značka Vaillant k tým najväčším a najvýznamnejším. Dlhodobo je lídrom na trhu a priekopníkom vo vývoji a inováciách v oblasti vykurovacích technológií v Európe. Skupina Vaillant Group má vybudovanú rozsiahlu sieť obchodných zastúpení a tisíce spokojných zákazníkov po celom svete.

Do bohatého portfólia Vaillant Group patria moderné technológie vykurovania, ktoré sú energeticky úsporné, efektívne a prispievajú k ochrane životného prostredia. Vďaka širokému spektru produktov a modelov si tu každý zákazník nájde presne to, čo potrebuje. Sortiment zahŕňa závesné a stacionárne kotly, zásobníky teplej vody či elektrické spotrebiče. Na trhu závesných kotlov je spoločnosť s 26 percentným podielom dokonca číslom jedna v Európe. Vaillant Group sa nešpecializuje len na vývoj a výrobu kotlov, do jej produktového portfólia patria aj technológie využívajúce obnoviteľné zdroje energie, ako sú solárne systémy či najmodernejšie tepelné čerpadlá a klimatizácie. Užívateľom ponúka tiež rekuperačné alebo kogeneračné jednotky či zeolitové tepelné čerpadlá.

Vaillant Group myslí každý deň dopredu a ponúka individuálne riešenia pre každú potrebu a každý druh energie. Jej úspech je založený tiež na výskume a vývoji, ktorý vždy prebieha v súlade so želaniami zákazníkov. Oddelenie výskumu a vývoja spoločnosti patrí k najväčším a predovšetkým k najkreativnejším oddeleniam v tomto segmente. Tím vývojárov neustále pracuje na nových zariadeniach a technologických systémoch, ktoré sa čoraz jednoduchšie obsluhujú a ktoré už dnes spĺňajú požiadavky zajtrajška. Či ide o energetické riešenia budúcnosti, alebo o najlepší spôsob ako využiť fosílne palivá, spoločnosť Vaillant Group sa snaží predvídať nové trendy a byť vždy o krok dopredu pred ostatnými. Dôkazom toho je aj každoročné prihlásenie až 100 nových patentov. V oblasti výroby kladie firma najväčší dôraz na dosiahnutie najvyššej kvality kotlov, ktorá predstavuje dokonalosť do najmenšieho detailu.

Vaillant Group má svoje zastúpenie vo väčšine krajín sveta. Výnimkou nie je ani Slovensko, kde sídli spoločnosť Vaillant Group Slovakia, s. r. o. zastupujúca značky Vaillant a Protherm. Vykurovacie zariadenia Vaillant Group sa vyrábajú v siedmich výrobných závodoch, pričom až dva z nich sa nachádzajú na území našej krajiny. Tieto fabriky zamestnávajú spolu viac ako 1 300 ľudí. Výrobný závod Protherm Production so sídlom v Skalici sa špecializuje na výrobu elektrokotlov a stacionárnych kotlov pre všetky značky patriace do skupiny Vaillant Group. Môže sa pochváliť aj vlastným vývojovým centrom, ktoré patrí k najmodernejším v Európe. Druhým výrobným závodom na Slovensku je Vaillant Industrial Slovakia v Trenčianskych Stankovciach, ktorý pre celú skupinu vyrába moduly pre závesné kotly.

Udržateľnosť 

Ako do budúcnosti orientovaný, rodinný podnik, prijímame osobitnú zodpovednosť za životné prostredie, pre našich zamestnancov a pre spoločnosť. Sme presvedčení, že hospodársky úspech, udržateľný a ziskový rast sú neoddeliteľne späté so záväzkom sociálnych a ekologických štandardov.

Aby bolo možné splniť tento záväzok, sme zviazaní plniť naše aktivity trvalo udržateľného rozvoja v strategickom S.E.E.D.S. Program (Udržateľnosť v prostredí, zamestnancoch, rozvoj & produkty a spoločnosť). Definícia tejto oblastí záujmu je založená na komplexnom pochopení udržateľnosti, v ktorej berieme do úvahy aj kľúčové problémy našich hlavných činností.

 

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