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Selecting Gas Ovens: Junkers Cerapur Smart 24kW vs. Biawar 220L for 145m House - Termet Comparison

baszaenwues141 9021 7
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  • #1 16512315
    baszaenwues141
    Level 2  
    Hello expert advises me junkers cerapur smart 24 kw single function plus 220 l and biawar 220 l (4 people family 2 + 2), the more I start to read about the company junkers, the more I think or not replace it with a termet?
    New house well insulated 146 m plus a 28m garage
    Thanks for the info
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  • Helpful post
    #2 16512425
    Plumpi
    Heating systems specialist  
    Personally, I recommend the ACV boilers from the Kompakt and Unical Osa series. If you want to buy cheap and good, I recommend boilers from the manufacturer Unical Alcon 09

    Only a larger number of service technicians speak for Termet or Junkers. Behind mentioned by me, the quality and durability of exchangers.
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  • #3 16512646
    baszaenwues141
    Level 2  
    [quote = "Plumpi"] Personally, I recommend the ACV boilers from the Kompakt and Unical Osa series. If you want to buy cheap and good, I recommend boilers from the manufacturer Unical Alcon 09

    Thank you, read :)
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  • #4 16512804
    ls_77
    Level 37  
    baszaenwues141 wrote:
    Hello expert advises me junkers cerapur smart 24 kw single function plus 220 l and biawar 220 l (4 people family 2 + 2)


    First, look for a boiler with a much lower power. A professional recommends 24kW for 146m2? Which gives 164W / m2! 100-150W / m2 was used in old buildings. In currently under construction it is ~ 50W / m2. Go to the website: cieplowlasciwie.pl provide the data and the calculator will calculate the power you need. Then check the availability of services in your area and only then select the boiler manufacturer.
    For example, I recommend Vaillant boilers from the PLUS series with you, that's all you need VC 146 / 5-5 and comes in packets with a storage tank, e.g. 120 or 150 liters, weather-compensated control unit, boiler-tank mounting fittings and a chimney (to choose from through the wall or a basic chess set).
  • #5 16513098
    Plumpi
    Heating systems specialist  
    ls_77 wrote:

    First, look for a boiler with a much lower power. A professional recommends 24kW for 146m2? Which gives 164W / m2! 100-150W / m2 was used in old buildings. In currently under construction it is ~ 50W / m2.


    There is a problem with boilers with "much lower" output, because hardly anyone produces.
    Rather, it is necessary to focus on a boiler with a large modulation range so that it can work with low power.
    Oversizing of condensing gas boilers has no effect such as coal boilers, which the more oversized, the lower their efficiency. It is different in condensing gas boilers. The less power a boiler works in the modulation range, the more efficient it is. So it is better to use a boiler with high power and a large modulation range, e.g. 1: 8 or 1:10 and let it work at the lowest modulation possible. Then he will work with the greatest efficiency.
    If you install a boiler with a much lower power, this boiler will have to work more in the upper modulation range, and thus in a range of lower efficiency.
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  • #6 16515709
    baszaenwues141
    Level 2  
    Thanks for the hints. In general, most furnaces have a wide range of modulation, but after reading a few threads about the junkers, they will change their minds and I will probably choose the TERMET ECOCONDENS GOLD PLUS 25 - SINGLE-FUNCTION CONDENSING GAS BOILER - WKJ462, cost 3700, and the junkers smart 4800. Thousands ahead he held the termet, it may also be a lottery, I still have a week to think about choosing an oven.
    All I know is that the site sucks: / something for something.
    I do not have much funds because I have to buy a max 5000 PLN tank 220 l and a plumber biawar or galmet (2000 PLN) recommended me any cheaper counterparts? Thanks
  • #7 16516186
    Plumpi
    Heating systems specialist  
    Why do you want a hot water tank? Large family? Do you want to use several bathrooms at the same time? Are you far from the boiler room for hot water intakes?
    If one of the above-mentioned situations does not occur, then think about a 2-function boiler. Sometimes 2-function boilers are cheaper than 1 function. In addition, with a 2-function boiler you have no heat loss due to the cooling of the water in the tank.
  • #8 16518169
    baszaenwues141
    Level 2  
    Plumpi wrote:
    Why do you want a hot water tank? Large family? Do you want to use several bathrooms at the same time? Are you far from the boiler room for hot water intakes?
    If one of the above-mentioned situations does not occur, then think about a 2-function boiler. Sometimes 2-function boilers are cheaper than 1 function. In addition, with a 2-function boiler you have no heat loss due to the cooling of the water in the tank.



    Family of 4 people, 2 bathrooms, baths, washing machine around the clock, etc.
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Topic summary

The discussion revolves around selecting a gas boiler for a well-insulated 146m² house with a 28m² garage, focusing on the Junkers Cerapur Smart 24kW and Biawar 220L models. Users express concerns about the appropriate power output, with recommendations suggesting that 24kW may be excessive for modern constructions, which typically require around 50W/m². The importance of choosing a boiler with a large modulation range is emphasized, as it enhances efficiency. The Termet ECOCONDENS GOLD PLUS 25 is also considered as a viable alternative due to its lower cost and favorable reviews. The need for a hot water tank is questioned, with suggestions for a two-function boiler if multiple bathrooms are not a concern. The user ultimately leans towards Termet due to cost considerations and service availability.
Summary generated by the language model.
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