Exhibition in Ostrava and Prague

10.01.2023

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

Articles

Natural refrigerant R290 propane

Air source heat pumps are a solution that is increasingly used in various types of buildings. One of the main reasons for their popularity is the optimization of heating costs.

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Central heating pellet fired boiler with or without lambda probe?

There are many different views regarding use of lambda probe in central heating stove. However to find out if this investment makes sense, let us examine its operating principle as well as all advantages and disadvantages.

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FAQ

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.

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Is 190oC temperature of flue gas in Lazar branded pellet fired boiler allowed?

This temperature is possible, if the heat exchanger gets dirty and boiler has been in operation for few hours at total output (at low outdoor temperature). In this case clean the boiler and check...

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