Exhibition in Ostrava and Prague


Our Czech distributor 4Heat will appear at two fairs in the Czech Republic!

  • Infotherma 2023, which will take place January 23-26 in Ostrava,
  • FOR PASIV, which will take place February 9-11 in Prague , where Polish heating products HKS Lazar will also be presented.

We are glad that our products are presented at international fairs!

Targi w Czechach

Modern heating devices HKS Lazar

Modern heating devices


Pellet – cost-effective heating

Is cost-effective heating possible? Pellets make for a good solution. Find out more!

Pellet ON – Do you want to switch onto PELLETS?

Are you looking for comfortable and efficient solution? What is important? What you need to know?



How to check anti-freeze fluid level in Smart Fire 11 boiler with central heating function only (without hot domestic water supply). The boiler was not used this winter?

Any fluid loss will be demonstrated with pressure loss indicated by manometer. In case of open circuit, you can also check the level of compression vessel.

Is room temperature sensor included in Eco max 800 t controller set?

Room temperature sensor is available upon separate order.



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