24-28KW Stainless Steel Heat Exchanger Units for Residential Combi Condensing Gas Boiler Systems

Combi 24-28KW Condensing Gas Boiler Stainless Steel Heat Exchanger Units

Product Introduction

24-28KW Stainless Steel Heat Exchanger Solutions for Home Heating and Hot Water Condensing Gas Boilers

Introduction & Key Advantages

What Is a High Efficiency Condensing Stainless Steel Heat Exchanger?

A high efficiency condensing stainless steel heat exchanger recycles the unused heat contained in flue gas moisture. By condensing water vapor into liquid form, the system extracts additional heat energy and improves the overall heating process.

The advanced condensing technology provides 107–109% thermal efficiency, significantly higher than conventional systems with 85–95% efficiency.

Benefits:

• Higher energy recovery capability
• Reduced gas consumption
• Better heating efficiency
• Long-term energy savings

What Is a Gas Condensing Heat Exchanger?

A gas condensing heat exchanger uses a full premix gas combustion structure to achieve accurate air and fuel mixing before combustion.

This design provides:

• Cleaner combustion with fewer emissions
• Stable and continuous heating performance
• Improved heat generation efficiency

Where Is It Used?

Key Advantages

1. Much Higher Efficiency — Saves Money

· Thermal efficiency: 107–109% (vs. 85–95% for ordinary boilers)

· Less gas used for the same heat output

· End users pay less on their energy bills

2.  Stainless Steel — Built to Last

· Made from stainless steel

· Handles acidic condensate (pH 3–5) with no problem

· No rust. No corrosion. No leaks.

· Expected service life: 15+ years

3.  Low Emissions — Clean & Green

· Meets EU ErP Directive and all major global environmental standards

· Helps customers stay ahead of tightening regulations

4. Smart Design — Better Performance

· Spiral finned tube structure increases heat transfer surface by 40–60%

· Multi-pass water circuit design for stronger turbulence and better heat exchange

· Low water resistance — works with smaller pumps → saves electricity

5.  Quiet & Stable

· Smooth flame, no pulsation

· Quiet operation — suitable for homes and hospitals

· No hot spots → no cracking, no breakdowns

6. OEM & Custom Service Available

· Standard sizes in stock for quick delivery

· Custom design & tooling to match your specific boiler model

· Full technical support: heat load calculation, product selection, testing

· Your brand logo can be applied (OEM/ODM welcome)

Why Choose Us?

You get the same quality. You keep more profit. You get better service.

Simple Comparison

Our Promise to You

As a professional heat exchanger manufacturer, we focus on delivering high-quality products, competitive solutions, and dependable customer service for global markets.

We guarantee:

• Leading technology solutions — The same reliable technology standards trusted by major manufacturers
• Strict quality management — ISO certified production systems ensure stable product performance
• Cost-effective solutions — Factory-direct pricing helps customers achieve higher profit returns
• Efficient delivery performance — Faster manufacturing and shipping to reduce waiting time
• Complete technical support — Assistance throughout the entire process from product selection to after-sales service

FAQ

We are ready to be your trusted manufacturing partner for full premix condensing stainless steel heat exchangers.

Contact us today for:

· Product catalog and price list

· Custom design consultation

· Fast sample evaluation

· OEM/ODM cooperation discussion

Certificate

Product packaging