KAWMET Premium ARES S7 ECO Freestanding Stove
KAWMET Premium ARES S7 ECO is a wood-burning freestanding stove from the Polish foundry KAWMET with a nominal output of 11.3 kW, sized for rooms of up to 120 m² (up to 300 m³). A flat front pane shows the firebed head-on. Thermal efficiency is 77 %, energy class A.
The entire combustion chamber weighing 140 kg is an iron casting — with no welded sheet that would warp over time under repeated heating and cooling. Cast iron works like a storage battery: it absorbs heat while the fire burns and gives it back gradually once the flames have died down. A vermiculite baffle turns the flue gases back above the firebed, lengthening their path and raising the combustion temperature.
Key features — ARES S7
- Nominal output 11.3 kW — heats up to 120 m² (300 m³)
- Thermal efficiency 77 %, energy class A
- Secondary combustion — secondary air burns off gases that would otherwise escape up the flue
- Clean glass system — air guided along the pane limits soot build-up
- Meets Ecodesign requirements
- Provision for an external combustion air supply
- Flue outlet top or rear, flue pipe Ø130 mm (125/139); door opens to the left
- Maximum log length 500 mm
- Dimensions (W × H × D): 681 × 712 × 524 mm, weight 140 kg
- Material: cast iron. Made in Poland — 5-year warranty
The KAWMET Premium ECO range — a stove as part of the interior
ARES S7 belongs to the KAWMET Premium ECO range — freestanding stoves in which the cast iron body is also a decorative object. Every model in the line carries a name from mythology and has its own casting form; what they share is solid cast iron, a secondary combustion system and compliance with Ecodesign requirements.
Cast iron behaves differently from steel in a freestanding stove: it heats up more slowly, but once the fire is out it keeps releasing stored heat for hours. In practice that means less refuelling in the evening and a warmer morning.
Is 11.3 kW enough to heat my house?
The model is rated for roughly 120 m² with standard insulation and a ceiling height of 2.5–2.7 m. In a poorly insulated building, one with large glazed areas or a higher ceiling, the real figure will be lower. Oversizing is harmful too, however: for most of the season the appliance then runs on a low flame, which soots up the glass and the flue faster.
Does it need an external air supply?
The model is designed for it, and in an airtight building with mechanical ventilation or heat recovery it is the recommended solution — without its own air supply, ventilation can reverse the flue draught. In an older building with natural ventilation an external air supply is not essential, but it usually makes combustion more stable. The connection parts (inlet, orifice, pipe) are ordered separately — they are not part of the set.
What chimney and space does the stove require?
A flue of Ø130 mm (125/139), with the outlet at the top or rear. The stove measures 681 × 712 × 524 mm (W × H × D) and weighs 140 kg. Required clearances to walls and combustible materials are given in the manufacturer's manual, available in the documents section on this page.
What fuel should be used?
The fuel is seasoned hardwood with a moisture content of up to 20 %. The maximum log length is 500 mm. Wet wood gives noticeably less heat, smokes up the glass and speeds up soot deposits in the flue. Chipboard, painted or impregnated timber and waste must not be burnt — they shorten the life of the cast iron and void the warranty.
KAWMET products carry a 5-year manufacturer's warranty. Your nearest representative will confirm availability and purchase terms.
