DHW heat exchanger for gas boilers OKC 125 NTR/HV Class A with spiral coil 1.45 m², enamel-coated 1103707101

Heat exchanger for domestic hot water for gas boilers

This Drazice brand DHW heat exchanger, model OKC 125 NTR/HV, is an efficient solution for year-round domestic hot water supply when connected to a gas boiler. Its design is optimized for easy mounting beneath the boiler — the outlet ports located at the top significantly simplify installation.

The spiral coil with a surface area of 1.45 m² ensures high heat exchange efficiency, resulting in rapid water heating and reduced energy consumption. The tank is made of enameled steel and is corrosion-resistant thanks to the high-quality Crystal Enamel anti-corrosion coating and an additional magnesium anode protection. This guarantees long-term, reliable operation even with hard or chlorinated water.

• Energy efficiency: Class A energy efficiency rating means minimal heat loss and lower operating costs.
• Durability: Crystal Enamel coating and magnesium anode protect against corrosion, extending the heat exchanger’s lifespan.
• Performance: Large coil surface area (1.45 m²) ensures fast water heating.
• Easy installation: Top-mounted outlets simplify connection to gas boilers.
• ThermoGen4 insulation: Modern insulation minimizes heat loss to the environment, maintaining high water temperature for longer periods.

The OKC 125 NTR/HV heat exchanger is an ideal choice for installers seeking a reliable and efficient solution, as well as for users who value comfort and savings. The absence of an electric heating element means the unit operates entirely dependent on the gas boiler — which is its primary advantage and intended design.