About Vaillant aroTHERM Plus
Vaillant is one of the UK’s most trusted heating brands, and the aroTHERM plus is their flagship air source heat pump. Designed to integrate seamlessly with Vaillant’s existing ecosystem (including their multiMATIC controls), it’s a popular choice when replacing an existing Vaillant boiler.
Available Models
- aroTHERM plus 5 kW: Small properties and well-insulated homes
- aroTHERM plus 7 kW: 3-bedroom semi-detached homes
- aroTHERM plus 10 kW: Larger detached homes
- aroTHERM plus 12 kW: Larger properties
Efficiency
The aroTHERM plus achieves SCOP ratings of up to 4.7, qualifying for A+++ energy rating. At the lowest ambient temperature (-15°C), the system maintains heating capacity, making it suitable for all UK climates including colder northern regions.
Integration with Existing Vaillant Systems
One of the aroTHERM’s strongest selling points is compatibility with Vaillant’s uniTOWER and auroSTOR cylinders, as well as multiMATIC and sensoNET control systems. This simplifies system design and provides a seamless user experience.
R290 Propane Refrigerant
The newer aroTHERM plus models use R290 (propane) refrigerant, which has a global warming potential (GWP) of just 3 compared to 675 for the older R32. This future-proofs the system against refrigerant phase-down regulations.
Our Verdict
The Vaillant aroTHERM plus is an excellent all-rounder with strong efficiency, good controls integration, and Vaillant’s trademark build quality. Highly recommended for any home, particularly those with existing Vaillant systems.
Sources: Vaillant UK and MCS standards.
