




Viessmann Vitocal 100-A 10kW – 12kW Heat Pump
£2,998.91 – £3,115.35Price range: £2,998.91 through £3,115.35 Ex. VAT
The Viessmann Vitocal 100-A is a space-saving air/water heat pump designed for outdoor installation, ideal for both new build and modernisation projects. With power outputs ranging from 10kW to 12kW, it provides efficient heating and domestic hot water while using refrigerant R32. The corrosion-resistant, gold-plated heat exchanger ensures long-lasting performance, and the unit’s streamlined design makes installation quick and hassle-free. With its energy-saving operation, 5-year standard warranty, and optional remote control features, the Vitocal 100-A Heat Pump delivers a cost-effective, reliable, and eco-conscious heating solution.
Add Heat Pump Cylinder To Your Order:
Viessmann OSO Optima Geocoil OGC Heat Pump Cylinder
World Heat Climacyl Unvented Heat Pump Cylinders 150L – 300L
Add Installation Pack To Your Order:
Installation Pack for Viessmann Vitocal 100-A
Viessman – Vitocal-100-A-Product-Brochure
Viessmann Vitocal 100-A – Instalation Manual
Viessmann Vitocal 100-A Air/Water Heat Pump
The Viessmann Vitocal 100-A is a highly efficient and compact air/water heat pump designed for outdoor installation, offering a sustainable and energy-saving heating solution for both new builds and modernisation projects. With a focus on performance, reliability, and ease of installation, the Vitocal 100-A is the perfect choice for homeowners seeking to reduce energy costs and their environmental impact.
This heat pump utilises the eco-friendly refrigerant R32, which ensures maximum energy efficiency and lower carbon emissions. Available with power outputs ranging from 10kW to 12kW, the Vitocal 100-A delivers outstanding heating performance and domestic hot water generation. Its innovative, corrosion-resistant gold-plated heat exchanger enhances durability and ensures reliable long-term operation.
Designed with installers in mind, the Vitocal 100-A does not require a refrigerant certificate, making installation simple and cost-effective. Additionally, its compact size and quiet operation make it ideal for homes where space and noise are considerations.
With its combination of high energy efficiency, modern design, and robust technology, the Viessmann Vitocal 100-A is an excellent investment for homeowners looking for a reliable, future-proof heating system.
Viessmann is a globally renowned company committed to delivering sustainable and innovative energy solutions for homes and businesses. With a focus on creating a “whole house environment”, Viessmann seamlessly integrates heating, cooling, and renewable energy technologies to maximise comfort, efficiency, and sustainability. From advanced heat pumps and solar systems to smart controls, Viessmann provides a complete, future-proof solution tailored to modern living. Their reputation for quality, reliability, and eco-friendly innovation makes them a trusted choice for creating energy-efficient, comfortable, and environmentally responsible homes.
Key Features
- Compact and Space-Saving Design: Ideal for outdoor installation, saving indoor space.
- Eco-Friendly Refrigerant (R32): Maximises energy efficiency and reduces environmental impact.
- Flexible Power Output: Ranges from 6 to 16 kW, suitable for various household heating requirements.
- Corrosion-Resistant Heat Exchanger: Gold-plated design ensures long-lasting and reliable operation.
- Quiet Operation: Engineered for low-noise performance, making it suitable for residential areas.
- Easy Installation: No refrigerant certificate required for installers, reducing time and costs.
- Cost-Effective Performance: Delivers efficient heating and domestic hot water with reduced energy consumption.
- 5-Year Warranty: Peace of mind with Viessmann’s trusted product reliability and support.

Important Notes.
- Heat pumps must be commissioned by Viessmann Technical Service or a specialist heat pump contractor certified by Viessmann
- If the heat pump is being installed to modernise a heating system, a dirt separator with magnet is essential;
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Brand | Viessmann |
| Nominal Output Power | 10kW, 12kW |
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Shipping & Delivery
We offer multiple shipping & delivery options for all our products. Simply enter your postcode in the cart or checkout, and any relevant shipping charges will be automatically calculated. When you get to the checkout page, you will be able to select your chosen delivery day and if you need it, delivery time too.
Options available
- Next day (standard) available for all orders placed by 12pm
- AM - 08:00 - 13:00
- AM - before 10:30
- PM - 12:00 - 18:00
Most of our products will be shipped on a pallet by one of our trusted courier partners. You must be present at the delivery address in order to receive and sign for your goods.

The Viessmann One Base system is an advanced, integrated home energy management platform that combines heating, cooling, and energy solutions into a seamless ecosystem. Designed for residential applications, it optimises energy efficiency, enhances comfort, and supports sustainable living by integrating heat pumps, solar energy systems, and smart controls in one unified interface.
Key Features of the Viessmann One Base System:
Integrated Energy Management
The One Base system connects and manages multiple Viessmann products, such as heat pumps, solar panels, and ventilation systems, ensuring they work together efficiently to reduce energy consumption and costs.Smart Home Integration
It offers compatibility with smart home platforms, allowing homeowners to control and monitor their heating, cooling, and energy usage remotely through a user-friendly app. This functionality enhances convenience and enables precise adjustments based on lifestyle needs.Sustainability and Energy Efficiency
By optimising the use of renewable energy sources, such as solar power, and prioritising efficient heat pump operation, the system significantly lowers carbon emissions and contributes to a greener environment.Customisable Comfort Settings
The One Base system provides personalised comfort settings, enabling individual room temperature control and adaptive operation based on occupancy and weather conditions.Future-Proof Design
It’s built to accommodate future energy technologies, ensuring compatibility with evolving renewable energy solutions and energy storage systems.Centralised Monitoring and Diagnostics
The platform allows real-time monitoring of all connected systems, simplifying maintenance and ensuring optimal performance with predictive diagnostics and automatic alerts for service needs.
Benefits of the Viessmann One Base System:
- Cost Savings: By intelligently managing energy usage, the system reduces energy bills over time.
- Environmentally Friendly: Supports the transition to renewable energy, reducing reliance on fossil fuels.
- Ease of Use: The single platform eliminates the complexity of managing multiple systems and devices.
- Scalability: Homeowners can expand the system with additional components as their energy needs evolve.
The Viessmann One Base system exemplifies innovation in sustainable home energy management, delivering comfort, efficiency, and eco-conscious living in a single, intuitive platform.
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