Kalorina Serie 20 MAClass 3
23–104 kW
Kalorina K 2004 M — Video presentation
The digital electromechanical boiler: comfortable, practical and safe. Solution with different power sizes and types of feeding systems, suited to large residential buildings, commercial and agricultural enterprises.
Multiple power versions and modular structure
Available models(6 variants)
Manufacturer-certified fuels
Compliant with European EN ISO 17225 standards — performance guaranteed by the original technical sheet.
Wood pellets
Cylindrical compressed wood pellets, Ø6 to 8 mm, moisture < 10%. Standard high energy density fuel.
Log wood
Dry log wood, length 33 to 50 cm, moisture < 25%. Manual loading, autonomy depending on the firebox.
Wood chips
Shredded wood chips, granulometry P16S to P31S. Cost-effective solution for large surfaces and automated silos.
Specifications according to the manufacturer's technical sheet. Using non-compliant fuels voids the warranty and may shorten the boiler's lifespan.
Kalorina Serie 20 M: grants in Luxembourg
In Luxembourg, the Klimabonus 2026 scheme subsidises the installation of a wood-pellet boiler in an existing residential building. Since 1 January 2026, only PELLET boilers remain eligible — log-fired and wood-chip boilers have been removed from the support scheme (aligning with the EU RED directive).
Klimabonus 2026 — wood-pellet boiler
Up to €8,000 for a single-family home (€4,000 if no old installation is being replaced); €6,000 per dwelling in a multi-unit building (capped at €40,000). Bonuses: +15% of the grant with a buffer tank (30 l/kW), +€1,000 flat-rate with solar thermal.
- Reserved for EXISTING residential buildings (housing — neither new-build nor commercial)
- Pellet boiler with automatic feed and ignition: particulates ≤ 8 mg/m³, NOx ≤ 200 mg/m³, efficiency ≥ 90%
- Application to be submitted within 4 years from 31 December of the year of the invoice
- Law of 24 July 2026: amounts published on guichet.public.lu (page updated on 11/08/2026)
Supplementary municipal grants
Varies by municipality — combinable with the national Klimabonus (some municipalities offer nothing).
- Amount and conditions specific to each municipality
- To be checked municipality by municipality via the Klima-Agence simulator
Information checked on October 3, 2026.
