PHNIX Unveils airMono: The Revolutionary A+++ R290 Indoor Monoblock Heat Pump for Urban Retrofit

Breaking the Space Barrier in Urban Retrofits and Modern Apartments

As the EU’s “Renovation Wave”, with a goal to upgrade 35 million building units by 2030, and national policies like the UK’s Boiler Upgrade Scheme (BUS) and Germany’s Building Energy Act (GEG) accelerate the phase-out of fossil fuel boilers, heat pumps have become the definitive path forward. However, many historic homes, townhouses and mid-row houses face a common obstacle: the lack of space for bulky outdoor heat pump units.

By utilizing an indoor-mounted design with air ducting, the airMono monoblock heat pump preserves building facades while fitting comfortably inside kitchens, utility rooms, or garages. PHNIX airMono can connect directly to a user's existing water tank, serving as the perfect indoor replacement for traditional gas or oil boilers. It perfectly combines functionality with aesthetics,  allowing for a seamless, low-cost transition to green energy.

Key highlights of the airMono R290 indoor monoblock heat pump:

• A+++ Energy Rating & Maximum Subsidies: Delivering top-tier ErP A+++ energy efficiency, airMono ensures users are eligible for the highest government incentives. In the UK, this performance level supports homeowners in securing the BUS grant. In Germany, airMono qualifies for substantial BEG funding, where its use of natural refrigerant can trigger an additional 5% Efficiency Bonus, potentially covering over 50% of the total investment.

• R290 Nature Refrigerant: Fully compliant with the latest F-Gas Regulations (GWP=3), this future-proof design ensures long-term compliance ahead of the 2032 total ban on fluorinated gases for small heat pumps, safeguarding your investment long-term.

• Simplified Indoor Installation: By utilizing air ducts for 100% indoor installation, the system eliminates the need for an outdoor unit. This makes it much easier to install in urban living conditions, significantly slashing labor costs and installation time.

• Easy-Access Maintenance: A unique three-side quick-access design allows technicians to service core piping and electrical components without moving the unit.

• AI Smart Connectivity: Integrated with PHNIX AI-driven service ecosystem, including the NIKIGPT AI assistant and IoT platform. This enables remote service and management.

Join the Green Revolution at MCE Milan 2026

PHNIX will showcase the airMono live at MCE Milan 2026 (March 24-27). Visitors are invited to explore how this AI-powered indoor monoblock heat pump is setting a new standard for sustainable urban living.

Visit us at Hall 3, Stand K01/L10.

Everything You Need to Know About airMono PHNIX R290 3-in-1 indoor monoblock heat pump

Q1: Does the airMono heat pump really require no outdoor unit?

A: Yes. The airMono is a fully indoor-mounted monoblock system. It is equipped with a Gas Separator and R290 leak detection, which are the key to enabling the safe indoor installation of a system with a refrigerant charge exceeding 150g. The system rapidly detects leaking refrigerant and actively discharges it. It's perfect for historic buildings or high-rise apartments where outdoor units are restricted.

Q2: Is the airMono easy to maintain?

A: Absolutely. PHNIX designed the airMono with a "Quick Access Service" design. Technicians can reach core pipes and the electrical box simply by removing the side and front panels—no need to dismantle or move the unit.

Q3: Will the airMono be too noisy since it’s installed completely indoors?

A: Not at all. The airMono is engineered with an optimized air duct design that ensures smooth airflow throughout the system to minimize wind noise. Additionally, the compressor is fully enclosed by a specialized acoustic cover, providing superior sound insulation for a whisper-quiet indoor environment.

Q4: How does PHNIX‘s AI technology empower B2B partners?

A: NIKIGPT is PHNIX’s self-developed AI service assistant. It allows users to control the device or troubleshoot fault codes via natural language interaction. Combined with our IoT platform, the AI enables "predictive maintenance," alerting you to potential issues before they occur, which significantly boosts operational efficiency.