I have been engaged in the heating industry before, and I can tell you responsibly: whether it saves energy or not has nothing to do with the brand! The key is to look at the energy efficiency (it has stickers on the fuselage). The heating host is also called a wall-hung boiler. Wall-hung boilers have first-level energy efficiency and second-level energy efficiency.
Condensing furnaces with first-level energy efficiency can recover the heat of flue gas to save gas. They are currently the most technologically advanced and have the best energy saving!
However, it should be noted that condensing furnaces are divided into integrated (fully premixed) condensing furnaces and split condensing furnaces, which are suitable for different forms of heating systems. If you choose the wrong one, you will not be able to get the best out of the wall-mounted boiler. Best energy saving effect.
If you look carefully at the energy efficiency labels of these two types of condensing furnaces, you will find that: the integrated (fully premixed) condensing furnace has an energy efficiency of up to 99 under the "30 rated heat load heating efficiency"; while the split condensing furnace has The "rated heat load heating thermal efficiency" is as high as 99.
It should be noted that: "30 rated heat load" refers to low power and small fire, and "rated heat load" refers to full power large fire. It can be seen that the integrated (fully premixed) condensing furnace has the highest thermal efficiency under low fire and low power conditions, while the split condensing furnace has the highest thermal efficiency under high fire and high power conditions.
Therefore: If you want to build a floor heating system, you must choose an integrated (fully premixed) condensing boiler. It is most energy-saving when it uses low power and low fire to heat low-temperature water. Floor heating systems used for low-temperature water supply are the most energy-saving. . If you want to use radiator for heating, you should choose a split condensing boiler. It is more energy-saving when heating high-temperature water with high power and large fire, and is more suitable for radiator systems that require high-temperature water supply.
At present, the condensing furnace brands that are vigorously promoted on the market include Bosch and Altran. But each brand has its own technical advantages in condensing furnaces. For example, Bosch has an advantage in integrated (fully premixed) condensing furnaces. They use cast aluminum heat exchangers, which have better energy saving and longer service life. Alteran also has an integrated (fully premixed) condensing furnace, which uses a stainless steel heat exchanger like other brands. However, Alteran has exclusive technology research and development advantages in the field of split condensing furnaces.
So, if you are building a floor heating system, it will be more energy-saving to choose a Bosch or Alteran integrated (fully premixed) condensing boiler; if you are using a radiator for heating, it will be more energy-saving to choose an Alteran split condensing boiler.
Customers who like floor heating can also choose a water system air conditioner/floor heating dual supply, which saves more than 20-30% of energy than a condensing boiler and a wall-mounted boiler. The host can choose a water machine or a heat pump. The heat pump can be used in winter Heating is more energy efficient than water machines.
I can’t explain it in a sentence or two. I suggest you go to Yisheng HVAC. I’ve gone to study there before. They have a full range of wall-mounted boilers, including integrated condensing furnaces and split condensing furnaces. Yes, we even conducted a startup demonstration to directly compare the gas consumption of different wall-mounted boilers. You will know how to choose after taking a look.