Psychrometrics and mixed air
Track dry bulb, humidity, and enthalpy trends when outdoor air, return air, or coils change the state point.
Engineering
Subcategory hub
Planned tools
Thermal HVAC
Psychrometrics, dew point, duct sizing, heat loads, and practical HVAC estimation workflows.
Fast thermal and HVAC engineering content for air properties, sensible and latent loads, duct sizing, and preliminary heat transfer calculations.
Top workflows
Curated decision paths for this family. Calculator implementations are deferred; these blocks anchor how the catalog will be used once tools ship.
Sensible vs latent loads
Split heat into components that move temperature versus moisture so coil and airflow reasoning stays honest.
Duct velocity and sizing checks
Relate airflow, area, and velocity targets for early distribution layouts before detailed loss networks.
Heat loss and ventilation air changes
Connect envelope thinking to ACH targets when scoping equipment and outdoor air requirements.
Featured tools
Priority tools for this subcategory. Cross-links point to the main Engineering hub until dedicated calculator routes exist.
Wave 1
planned
Dew Point Calculator
Dew Point Calculator content entry for Thermal HVAC workflows.
On hub: Dew Point Calculator
Wave 1
planned
Psychrometric Calculator
Psychrometric Calculator content entry for Thermal HVAC workflows.
On hub: Psychrometric Calculator
Wave 1
planned
Sensible Heat Calculator
Sensible Heat Calculator content entry for Thermal HVAC workflows.
On hub: Sensible Heat Calculator
Wave 1
planned
Duct Size Velocity Calculator
Duct Size Velocity Calculator content entry for Thermal HVAC workflows.
On hub: Duct Size Velocity Calculator
All planned tools
Full catalog slice for this family (18 tools), ordered by launch wave then name.
- Dew Point CalculatorWave 1
- Duct Size Velocity CalculatorWave 1
- Psychrometric CalculatorWave 1
- Sensible Heat CalculatorWave 1
- Air Changes CalculatorWave 2
- Duct Friction Loss CalculatorWave 2
- Latent Heat CalculatorWave 2
- Mixing Air CalculatorWave 2
- Total Heat CalculatorWave 2
- Coil Load EstimatorWave 3
- Delta T Temperature ConverterWave 3
- Heat Gain CalculatorWave 3
- Heat Loss CalculatorWave 3
- Humidity Ratio CalculatorWave 3
- Insulation Heat Transfer CalculatorWave 3
- Relative Humidity ConverterWave 3
- Room Cooling Load EstimatorWave 3
- U-Value HelperWave 3
Featured guides
Supporting guides are mapped in the content model. Published guide slugs open in /guides; unpublished slugs still jump to Engineering hub anchors for context.
published guide
How To Estimate Dew Point
How To Estimate Dew Point guide entry for Thermal HVAC content.
Primary tool: Dew Point Calculator
On hub: Open published guide
planned guide
Psychrometric Basics for Quick HVAC Checks
Psychrometric Basics for Quick HVAC Checks guide entry for Thermal HVAC content.
Primary tool: Psychrometric Calculator
planned guide
How To Size Ducts Using Velocity
How To Size Ducts Using Velocity guide entry for Thermal HVAC content.
Primary tool: Duct Size Velocity Calculator
On hub: How To Size Ducts Using Velocity
Thermal HVAC FAQ
Why emphasize psychrometrics early?
Many HVAC mistakes are state-point mistakes, not arithmetic mistakes. Psychrometrics is the shared language for coils, ventilation, and comfort outcomes.
Are these tools suitable for refrigerant circuit design?
They target air-side and load-side quick checks. Refrigerant charge, oil return, and detailed equipment selections still require manufacturer data and applicable standards.
What assumptions should I always document?
Outdoor design conditions, indoor setpoints, infiltration or ventilation basis, and whether loads are peak or annual estimates. Those assumptions dominate whether two engineers agree.