Heat pump flexoTHERM exclusive VWF 157/4 Regulator sensoCOMFORT 720 Internet gateway VR 940f
Code: 0010020349Related products
Product detailed description
Heat pump Vaillant flexoTHERM exclusive VWF 157/4
The heat pump Vaillant flexoTHERM exclusive VWF 157/4 is the most powerful model of the flexoTHERM exclusive series available in this range – a highly efficient ground/water (or water/water) heat pump designed for larger family homes, multi-generational houses or small commercial buildings with higher heat loss. Despite its high performance, it is a compact indoor unit without the need for an external evaporator. The model is delivered with the touch controller sensoCOMFORT 720 and the internet gateway VR 940f for remote control and service diagnostics.
Technical specifications
- Nominal thermal output (B0/W35): approx. 13.9 kW
- Power consumption (B0/W35): approx. 3.5 kW
- COP (B0/W35) according to EN 14511: approx. 4.1
- Refrigerant: R410A, hermetically sealed refrigeration circuit
- Compressor: high-efficiency scroll compressor
- Energy class (heating, 35 °C): A++
- Dimensions (H × W × D): 1 183 × 595 × 600 mm
- Weight: approx. 190 kg
- Compressor power supply: 3~/N/PE 400 V, 50 Hz
- Controller: sensoCOMFORT 720
- Internet gateway: VR 940f
- Active cooling: yes, standard integrated (natural cooling)
- Noise emissions: quiet operation thanks to the Sound Safe System
What is flexoTHERM exclusive and why choose it
The flexoTHERM exclusive heat pump flexibly uses energy stored in the ground, groundwater or (in combination with the outdoor unit aroCOLLECT) also in the air. The model VWF 157/4 is designed for buildings with higher heat loss, where a smaller model of the series would no longer be sufficient to cover peak loads on the coldest days of the heating season.
The unit carries the Green iQ designation, which Vaillant uses to mark products with advanced, sustainable and highly efficient technology with the possibility of intelligent internet connectivity. A high proportion of recycled materials in the cabinet construction and low operational electricity consumption contribute to a lower carbon footprint of heating even in larger buildings.
Thanks to the Sound Safe System, which vibrationally separates the compressor and refrigeration circuit from the unit's housing, the flexoTHERM exclusive belongs among the quietest heat pumps in its performance class – suitable even for technical rooms adjacent to living areas.
Control and remote operation
The system controller sensoCOMFORT 720 with a color touch display controls the entire heating system – hot water preparation, equithermal control, multiple heating circuits (suitable for multi-generational homes with separate zones) and the summer mode of active cooling. It allows setting weekly time programs and provides an overview of the current consumption and performance of the system.
The internet gateway VR 940f connects the heat pump to the home WiFi network and the internet, making it possible to control the entire system remotely via a mobile app. An authorized service technician can also remotely diagnose any potential fault via the gateway without the need for an immediate site visit, which is particularly beneficial for larger installations with higher operating costs.
Installation and heat source
The model VWF 157/4 is connected to a low-temperature heat source according to the geological conditions of the site – a ground loop collector, vertical geothermal boreholes or a well system in the case of groundwater use. At this performance level, an accurate heat source project is essential (more boreholes of greater depth or a larger collector area) to ensure sufficient regeneration throughout the entire heating season and a stable seasonal performance factor.
The indoor unit is installed in a technical room or boiler room with sufficient space for service access and, if necessary, connection of additional electric heating in extreme cold. For hot water preparation at higher consumption, we recommend a larger storage tank or a combination of multiple storage tanks. Installation and commissioning must be carried out only by an authorized service organization trained by Vaillant.
Compatible accessories
- Large-volume hot water storage heaters (from the uniSTOR, actoSTOR series) according to household needs,
- Separation and distribution modules fluoCOLLECT for connecting multiple heating circuits,
- Buffer tanks for increasing system accumulation at higher outputs,
- Accessories for ground collectors or geothermal boreholes (distribution shafts, antifreeze mixture),
- Room temperature and humidity sensors for individual heating zones,
- Remote control units sensoCOMFORT for individual rooms or apartment units.
Frequently asked questions (FAQ)
How large a house can the VWF 157/4 heat?
With a properly dimensioned heating system (ideally floor or low-temperature heating), model 157/4 is suitable for family or multi-generational homes with a heat loss of approximately up to 14 kW, which in a new build with good thermal insulation corresponds to an area of approximately 300–380 m².
Can the heat pump also be used for cooling in summer?
Yes, the flexoTHERM exclusive has a standard integrated active cooling function (natural cooling), which can cool the interior in a mild way during summer via the same distribution that is used for heating in winter.
Is a building permit required for drilling or a collector?
For vertical geothermal boreholes, it is usually necessary to notify the relevant authority about geological work, while for a ground loop collector, the administration is simpler. For this model's performance, an accurate geological assessment and heat source project are essential.
What is the lifespan and warranty?
With regular service, the lifespan of a Vaillant heat pump is typically 20 or more years, and the SCROLL compressor is highly reliable. The product is covered by a 2-year legal warranty; an extended warranty can be agreed with an authorized service partner upon fulfilling the conditions for regular service inspections.
Can the heat pump be controlled from a phone?
Yes, thanks to the internet gateway VR 940f and a free mobile app, it is possible to change temperatures, heating programs and hot water preparation modes from anywhere with an internet connection.
Operating costs and savings
Thanks to a coefficient of performance (COP) of around 4.1, the VWF 157/4 heat pump produces approximately 4 kWh of heat from 1 kWh of electrical energy, which even at this higher output of the model brings significant savings in operating costs compared to direct electric heating or an older gas boiler. Compared to air-source heat pumps, the ground or water heat source has a more stable temperature throughout the entire heating season, allowing the pump to maintain high efficiency even on the coldest winter days without the need for frequent activation of additional electric heating. The actual savings depend on the quality of the building's thermal insulation, the setting of the heating curve and the type of metering point (we recommend considering a two-tier electricity rate for heat pumps).
Environmental benefits
The heat pump produces no emissions at the installation site during operation – it does not burn natural gas or any other fossil fuel. In combination with a photovoltaic power plant on the roof of the house, it is possible to significantly reduce the indirect carbon footprint of heating a larger or multi-generational building. Thanks to the Green iQ certification and low noise level, the flexoTHERM exclusive also meets stricter requirements for quiet and sustainable operation in residential areas.
The Vaillant flexoTHERM exclusive VWF 157/4 heat pump with the sensoCOMFORT 720 controller and the VR 940f internet gateway is delivered with professional advice on selecting the appropriate heat source and accessories. If you are interested in a specific system configuration (collector, boreholes, hot water storage tank), please do not hesitate to contact us – we will gladly prepare a tailor-made quotation for you.
Heat pump systems
A heat pump is a device that transfers heat from one place to another. In heating mode, it extracts heat from the outside air (air-source heat pump) or from the ground (ground-source heat pump) and transfers it into a building. In cooling mode, the process is reversed.
Heat pumps are highly efficient because they move heat rather than generate it. They can provide two to three units of heat for every unit of electricity consumed, making them an environmentally friendly and cost-effective heating solution.
There are several types of heat pumps, including:
- Air-source heat pumps (ASHPs)
- Ground-source heat pumps (GSHPs)
- Water-source heat pumps (WSHPs)
Each type has its advantages and is suitable for different applications and environments. Proper installation and maintenance are essential for optimal performance and longevity of the system.
When selecting a heat pump system, it is important to consider factors such as the size of the space to be heated or cooled, the local climate, and the availability of renewable energy sources. Consulting with a qualified HVAC professional can help ensure the best system is chosen for your specific needs.
Additional parameters
| Category: | Ground Water Heat Pumps |
|---|---|
| Warranty: | 2 years |
| Weight: | 150 kg |
| Model: | flexoTHERM exclusive VWF 157/4 |
| Thermal output: | 14.39 kW |
| Electrical input: | 3.07 kW |
| COP: | 4.69 |
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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.