HVAC Technical & Business Blog
Master the technical fundamentals and business operational strategies used by high-performance HVAC companies. Professional guides on system sizing, diagnostic theory, and margin protection.
How to Size an HVAC System Properly
A step-by-step technical guide covering Manual J load calculations, CFM design, duct sizing, and static pressure verification.
Read Guide →What Is Static Pressure in HVAC? (Complete Guide)
Learn what TESP is, how to measure it, what causes high static, and how to fix it with real field examples.
Read Guide →How to Calculate CFM for Each Room
Master room-by-room airflow allocation using square footage, sensible heat load, and ACH methods.
Read Guide →HVAC Pricing Guide for Contractors
Learn how to price service calls, installations, and maintenance profitably by understanding labor burden and overhead.
Read Guide →Duct Sizing Explained (With Chart)
A guide to the equal friction method, duct sizing charts, and selecting the right diameter for rigid or flex duct.
Read Guide →How Many Tons of AC Do I Need?
Understand how HVAC tonnage is calculated and why "rule of thumb" square footage estimates are dangerous.
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