Tips from HETA

Choosing the proper stove

There is a large range to choose from and choosing the right stove is not so simple.
Before you decide, ask yourself the following five questions:


The size of your stove?

Is your stove to be the primary source of heating or will it just provide a cosy fire-lit atmosphere as a supplement to your present heat source? The answer is crucial for your choice of stove. A stove’s output is measured in kilowatts (kW). kW is an expression of the amount of heat given out by a stove. As a rule-of-thumb, 1 kW can warm up a 10-20 m2 room with an average ceilling height, depending on the room’s insulation. The value “kW tested” shows a stove’s output has been tested in accordance with the European Committee for Standardisation’s EN standard. Be careful not to buy a stove with to many kW, the result may be that you use it with too little air supply so that the combustion is not optimum.


Radiation or convection?

The majority of new stoves use convection, where air is circulated between an inner and outer steel mantle. When the air is heated it rises and heats the room. The convectional heat from a stove warms evenly, but requires a stove to be placed physically closer than a radiation stove. Therefore, you must consider where your stove should be installed.
Radiation gives a more intense heat and will be suitable for small rooms.


Plate steel or cast iron?

Both kinds of materials make excellent stoves and inserts. All HETA’s products have both plate steel and cast iron. The allocation set according to durability and design.


Steel, ceramic, granite or soapstone?

HETA has a wide selection of finishes from steel, casted tiles, ceramic, soapstone, limestone, granite and sandstone cladding options are available, depending on the model you choose. The choice of material is a matter of style and design, though each material has particular characteristics. A stove made entirely from steel or cast iron warms up faster than ceramics or stone and it also cools faster when the fire has gone out. Ceramics and especially soapstone take a little longer to warm up, but stay warm long after the fire has gone out. The slightly larger soapstone stoves stay warm for many hours and can easily keep a room or house nice and warm through the night, so you will not wake up cold in the morning.


Combustion technique?

Take into consideration your wallet and the environment and consider how your stove burns. HETA stoves’ quite uniquely-designed firebox and air supply reduce CO2 and harmful combustion particles to an absolute minimum. HETA’s modern combustion technique Clean Burn is particularly effective and removes soot particles on the glass door and through smoke vents. A healthy and comfortable radiation heat starts up immediately through the large glass when you light your stove and shortly after the convection system starts spreading the heat and cosiness in the room and the adjoining rooms.



Installation must be carried out correctly by an expert


The chimney must be approved. If your chimney is old, it must first be inspected and approved by a chimney sweep.


Never use wet firewood.


Avoid burning milk cartons of pressure-treated wood, magazines and newspapers. These materials give off toxic substances when burnt.


Read the instruction manual. Spend 15-20 minutes on firing up so that both the stove and chimney are sufficiently hot.


Add a little firewood at a time at frequent intervals. If you add too much at a time, you will likely have to turn down the air, which causes a lot of pollution.


Never leave the fire going overnight. This is harmful to the environment, as unburnt gases enter the air through the chimney.

How to light a fire


Make sure the air vent is completely open.


Place three sticks at a perpendicular angle to the hatch at the bottom of the stove. Remember to leave roughly two centimetres between each stick.


Place some smaller sticks on top of the three sticks in the opposite direction. Then place a third layer of even thinner sticks on top of those at a perpendicular angle to the hatch. Continue stacking on more in a similar fashion if desired.


Place some brushwood or very thin sticks and a couple kindling bags or bricks at the very top of the pile.


Set fire to the brushwood or thin sticks and leave the hatch roughly one centimetre open until the flames have taken hold.


Once you have got a fire going, use the stove as normal. Only use secondary air/combustion air and close everything else: the hatch, primary air, valve, ash drawer, etc., so that air is only entering the stove from the top of the hatch/glass.


If the pane or stones begin to blacken, it is because the stove is not getting enough air.

HETA Brænde brændestykker træ

Drying firewood

All common types of wood are suitable to be burned. Firewood should be cleaved and laid out to dry for 1-2 years under a shed roof to obtain a moisture content of no more than 18 per cent. Keep in mind that firewood will absorb moisture during the winter period. All types of wood have almost the same heating value per kilo. Oak and beech wood is heavy and therefore has higher heating value per cubic metre. Pine wood is light and therefore has a smaller heating value per cubic metre.

How to maintain your stove

Stoves with surface-treated heat-resistant varnishes
You can wipe the stove with a damp cloth. Repair any light damage with repair paint spray.

Cleaning glass
If your wood is not sufficiently dry, the combustion temperature will be too low. The wood will smoulder instead of burn, leaving soot on the glass. You can clean the glass with any ordinary window glass cleaner or a special glass cleaner from your HETA retailer.

Repair and cleaning of soapstone
Soapstone is a relatively soft natural product. You can therefore repair any scratches or other surface damage with fine sandpaper (grain 120). However, use with caution.

You can clean off soot, grease, etc. with water and a cleaning agent such as brown soap.

· Apply the soap to the surface
· Leave it to work for a few minutes
· Wash off the surface with hot water
· Once the surface is dry, you can sand it lightly with fine sandpaper if needed

Major damage
If a piece has fallen off your stove, you can glue it back on with water glass, which you can buy at your HETA retailer.

· Apply the water glass to both surfaces where you want to re-apply the piece that has fallen off.
· Keep the piece in place for 24 hours.
· Sand with sandpaper, grain 120.

If a piece has gone missing, or the chipped area is too deep, you can repair the damage with a mixture of soapstone powder and water glass, which you can buy at your HETA retailer.

· Mix the powder and water glass to a suitable consistency.
· Remove any dust.
· Brush on water glass to ensure good adhesion.
· Apply plenty of the soapstone mass, as it shrinks when it hardens. You can continue to apply more if necessary.
· After 24 hours have passed, you can sand the hardened surface. Start by using grain 60-80 sandpaper and finish with grain 120 sandpaper.

Five-year warranty on all Heta stoves

No stove ever leaves HETA without undergoing extensive production and quality control, which is carried out personally by CEO Carsten Bach or Factory Manager Martin Bach by random sampling.

HETA garanti stempel 5 år

HETA stoves are certified according to ISO ZERT DIN ISO 9001 quality system, which is our guarantee that we uphold a high quality standard. Customer satisfaction is the cornerstone of our company philosophy.