Semi-Premix Condensing Gas Boiler

The high-quality Semi-Premix Condensing Gas Boiler supplied by Baedin manufacturers is an economical and efficient upgraded heating and hot water solution, effectively bridging the performance gap between traditional atmospheric boilers and high-end fully premixed condensing boilers. This equipment adopts an innovative semi-premixed combustion logic and a dual-stage series heat exchange structure, optimizing fuel combustion efficiency and waste heat recovery from exhaust gases, breaking through the energy consumption bottleneck of traditional heating equipment.

Differential advantages

Unlike the single-pass heat exchange and fully premixed models of ordinary boilers, which have high requirements for gas, the Semi-Premix Condensing Gas Boiler produced by Baedin Factory achieves a balance between stable operation, low operating costs, and affordable price. It is suitable for long-term continuous heating and domestic hot water supply in various scenarios.

Core selling point

The boiler is equipped with an upgraded stainless steel dual-loop heat exchanger, which can deeply recover the latent heat in the flue gas and significantly improve the overall energy utilization efficiency. Its independent dual-loop structure design completely separates the heating system from the hot water system, avoiding mutual interference when operating simultaneously. With intelligent constant temperature control technology, the equipment can provide ultra-stable water temperature output and has excellent anti-vibration capabilities. Optimized for low-temperature heating systems and residential renovation projects, it has good gas adaptability, low emissions and low maintenance costs, achieving efficient and energy-saving environmental-friendly heating with higher cost-effectiveness.

Six ratings: 20 kW, 24 kW, 28 kW, 32 kW, 36 kW, and 40 kW, covering heating areas from 80 m² to 250 m². Select based on floor area, heat load, and local gas conditions.

Applicable Environments & Operational Superiority

Semi-Premix Condensing Gas Boiler is Widely suited for residential heating, low-temperature underfloor systems, and radiator systems – especially in new or renovation projects where both efficiency and economy matter. The condensing effect intensifies as return water temperature drops; below 50°C, recovery efficiency peaks, making underfloor heating an ideal match to maximise savings. Built-in multi-point temperature control stabilises hot water within 20 seconds of start-up, with ±1°C accuracy – eliminating sudden temperature swings. Heating and hot water circuits operate independently without mutual interference. Positioned between ordinary atmospheric and fully premixed condensing boilers, it offers significant energy savings at a reasonable price, delivering excellent long-term value.

Core Advantages

Semi-Premixed Combustion – Pre-mixing before ignition produces a uniform flame, lower excess air, and more complete combustion, significantly reducing CO and unburned hydrocarbons – outperforming conventional boilers even without condensing recovery.
Condensing Efficiency – Series-connected primary and condensing heat exchangers (stainless steel) recover latent heat, lowering exhaust temperature to 50–70°C and achieving 103%–105% efficiency – 20%–25% gas savings.
Gas Adaptability – More tolerant of calorific value fluctuations and pressure instability than fully premixed models, ensuring reliable performance where gas quality varies.
Stable Hot Water – ±1°C precision, rapid stabilisation, consistent comfort even during multi-point use.
Low Emissions – Complete combustion cuts CO and NOx significantly, meeting national environmental standards.
Smart Safety – LED display, heating/DHW priority, frost protection, anti-lock, dry-burn, over-temperature, low-pressure, flame-out, and 3Bar relief valve for comprehensive protection.

Technical Parameter

FAQ

Q1: What is the core advantage of semi-premix combustion?

It mixes gas and air evenly before ignition for fuller combustion, effectively reducing unburned gas and carbon emissions. It delivers more stable combustion efficiency than ordinary boilers and has lower gas quality requirements than full-premix models.

Q2: How does it achieve such high energy-saving performance?

Equipped with series dual stainless steel heat exchangers, it fully recycles waste flue gas latent heat, greatly lowering exhaust temperature and boosting overall thermal efficiency, realizing long-term low gas consumption operation.

Q3: Is it suitable for floor heating and radiator systems?

Yes. It fits both heating modes perfectly. It achieves optimal condensing energy-saving efficiency with low-temperature floor heating and maintains stable and efficient operation for radiator heating.

Q4: Will heating and hot water use interfere with each other?

No. Adopting an independent dual-circuit design, the heating and domestic hot water systems run separately without mutual impact, ensuring constant water temperature and stable heating during simultaneous use.

Q5: Can it adapt to unstable gas pressure and quality?

Yes. It has excellent gas tolerance, adapting to fluctuating gas pressure and calorific value in household pipelines. It maintains stable combustion without flameout or power attenuation, with stronger environmental adaptability.

Q6: How stable is the domestic hot water temperature?

Built-in precise temperature control system realizes fast temperature stabilization and ±1°C high-precision constant temperature, effectively avoiding sudden hot and cold water fluctuations for comfortable water use.

Q7: What are its environmental and cost advantages?

Full combustion greatly reduces NOx and CO emissions to meet environmental protection standards. Meanwhile, it balances equipment cost and energy-saving effect, with lower investment and maintenance costs than full-premix boilers and better long-term economic benefits.