Blog
HMA-1 vs. HMA-2A: Which Midco Burner Is Right for Your Application?
Choosing the right direct-fired make-up air burner is an important decision for original equipment manufacturers (OEMs), HVAC equipment designers, and industrial heating professionals. Burner selection affects heating capacity, combustion stability, emissions...
How Do OEMs Choose the Right Direct-Fired Make-Up Air Burner?
Selecting the right direct-fired make-up air burner is an important decision for original equipment manufacturers (OEMs) developing commercial and industrial heating equipment. The burner must deliver the required heating capacity while maintaining stable combustion,...
Why Midco’s HMA Burner Line Still Fits Modern Make-Up Air Design
Modern make-up air systems must do more than replace exhausted air. Original equipment manufacturers (OEMs) are designing heating equipment that delivers consistent temperatures, dependable combustion, flexible installation options, and reliable performance across...
ANSI Z83.4, Z83.18, and Z83.25 Explained for Make-Up Air and Process Heating OEMs
For original equipment manufacturers (OEMs) designing commercial and industrial heating equipment, understanding ANSI safety standards is an essential part of burner selection, equipment development, and product certification. Three important standards—ANSI Z83.4,...
Lower Emissions, Higher Performance: Why Two-Stage Combustion Matters in Direct-Fired Burners
Direct-fired burners are often evaluated based on heating capacity, efficiency, and operating range. But for today's industrial and commercial HVAC equipment, combustion performance and emissions are also important considerations from the beginning of the design...
Push-Through vs. Pull-Through: Which Airflow Arrangement Is Better for Direct-Fired Burners?
When designing a direct-fired make-up air system, burner selection is only one part of the equation. Airflow arrangement can have an equally important impact on combustion performance, temperature uniformity, equipment layout, and overall system operation. One of the...
How to Size a Direct-Fired Make-Up Air Burner Without Guesswork
Sizing a direct-fired make-up air burner can seem complicated, but the process becomes much easier when the right variables are evaluated together. Burner sizing isn't simply about choosing a burner that can produce enough BTUs. Airflow, temperature rise, burner...
Burner Controls, Flame Detection, and Safety: What Makes a Direct-Fired System Reliable?
When evaluating direct-fired make-up air burners, heat input, airflow, burner sizing, and performance are often the first considerations. While each is important, long-term burner reliability also depends heavily on the controls and safety systems managing combustion....
Why Modular Burner Design Matters for OEM Make-Up Air Equipment
Today's OEMs face increasing demands for higher efficiency, flexible equipment designs, easier maintenance, and improved system reliability. As make-up air systems become more advanced, burner technology must evolve to meet changing performance expectations. One of...
Direct-Fired vs. Indirect-Fired Make-Up Air: What OEMs Need to Know in 2026
As energy efficiency requirements, indoor air quality expectations, and industrial heating demands continue to evolve, OEMs must carefully evaluate whether a direct-fired or indirect-fired make-up air system is the best fit for their equipment. While both technologies...