NAVIEN LST-21K 21 kW
 | Outdated Product Energy source: liquid fuel; Installation: floor; Type: dual-circuit (heating and DHW); Heating area (m²): 158; Remote control unit; Heat output (kW): 21; Coolant min. T (°C): 41; Coolant max. T (°C): 80; DHW min. T (°C): 45; DHW max. T (°C): 83; Performance (ΔT=25 °C) (L/min): 12; Efficiency (%): 90 |
NAVIEN LST-21K 21 kW
Energy source:liquid fuel
Mount:floor, dual-circuit
Boiler power:21 kW, area ~ 158 m²
Combustion chamber:closed, flue 75 mm
DHW temperature:from 45 °С, up to 83 °С
All specifications
Specifications LST-21K
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E-Catalog UK editor, Boilers
Olexandr Cherkashchenko, edited 13.09.2021
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog NAVIEN 2026 - new arrivals, bestsellers, and the most relevant models NAVIEN.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog NAVIEN 2026 - new arrivals, bestsellers, and the most relevant models NAVIEN.
AccessoriesAll accessories for NAVIEN LST-21K →
Additional features boiler NAVIEN LST-21K:
- Fuel preheating (on KR series models)
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