Why the R290 All-in-One Heat Pump is the "No-Brainer" Replacement for Electric Boilers in 2026

For years, the European domestic hot water market was caught between two extremes: cheap but energy-draining electric boilers and high-performance but complex split heat pump systems. In 2026, the middle ground has been perfected. The R290 All-in-One Heat Pump (SDT-AA1 series) is no longer just a "green alternative"—it is the standard for high-efficiency, plug-and-play home heating.

By combining an ERP A+ energy rating with the natural refrigerant R290, Sidite's latest series delivers water at 75°C while slashing energy bills by up to 75%.

The "Plug & Play" Revolution: No F-Gas License Required

One of the biggest friction points for European installers is the requirement for F-Gas certification to handle split systems. The SIDITE SDT-AA1 solves this by integrating the entire refrigeration cycle into a single, hermetically sealed floor-standing unit.

Indoor Installation: No outdoor unit required.

Top Ducting: Simple air inlet/outlet via 160mm ducts.

Eco-Refrigerant: Uses R290 (Propane) with a GWP of only 3. It’s not just eco-friendly; it’s future-proof against upcoming EU F-Gas bans on R32 and R410A.

Technical Edge: Why "Dual Protection" Matters for ROI

Most homeowners overlook the tank. In traditional heat pumps, hard water and electrolysis eat through tanks in 5-7 years. The SDT-AA1 was engineered with an "Industrial Grade" longevity mindset.

1. Dual Corrosion Defense

While most manufacturers rely on a simple magnesium rod, Sidite uses a Dual System:

ICCP (Impressed Current Cathodic Protection): An electronic anode that never wears out, providing active protection.

Magnesium Rod: A secondary backup for passive defense.

Result: We confidently offer a 5-year warranty on our Enamel Steel tanks.

2. High-Temperature Performance

Unlike R32 units that struggle to reach 60°C, the R290 cycle naturally supports high temperatures. The SDT-AA1 hits 75°C (with heater backup), ensuring a 99.9% kill rate for Legionella without needing additional external boilers.

Performance Metrics: SDT-AA1 at a Glance

Data based on EN16147 test conditions.

Smart Home: Hot Water at Your Fingertips

The era of manual dials is over. The SDT-AA1 series features Integrated Wi-Fi Control. Whether you are a homeowner tracking your daily energy consumption or a property manager adjusting temperatures for a fleet of apartments, the SIDITE App provides real-time data and remote scheduling.

The minimalist wall-mounted controller mirrors the high-end aesthetic of modern smart homes, making it an asset for luxury residential projects and eco-estates.

Frequently Asked Questions

Is R290 safe for indoor installation?

Yes. Sidite’s SDT-AA1 units use a hermetically sealed circuit with a minimal charge of R290 (Propane), compliant with EN378 safety standards for indoor residential use. The natural venting and top-duct design ensure maximum safety.

How much can I save by switching from an electric heater?

Traditional electric water heaters have a COP of 1.0. The SDT-AA1 has a COP of over 3.0 at average European temperatures. This means for every 1kW of electricity, you get 3kW of heat, effectively reducing your water heating bill by 60-75%.

Can it work in cold climates?

The SDT-AA1 series is designed for the European market, operating reliably down to -7°C. For extreme winters, the system intelligently manages the R290 heat pump cycle and the backup electric element to ensure constant 75°C water.