Pass-Through / Transfer Ducts
Why a closed room needs a return air path, and how transfer ducts and pass-through grilles balance the air distribution.
HVAC Engineering Blog
Calculator walkthroughs and HVAC engineering notes.
- Commercial Kitchen Exhaust Hood (1)
- Drafting with AutoCAD (1)
- Duct Layout (2)
- Energy Code Compliance (1)
- Equipment Selection (2)
- ERV (1)
- Heating & Cooling Load Calcs (4)
- HVAC Engineering (7)
- Math (1)
- Psychrometric Chart (2)
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How to Use the Bilinear Interpolation Calculator
A step-by-step demonstration of the Bilinear Interpolation Calculator, reading a heat pump capacity between table rows and columns.
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How to Use Adicot's Linear Interpolation Calculator
What linear interpolation is and how to use Adicot's Linear Interpolation Calculator to estimate a value between two known points, with examples.
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Effect of ERV on AC Run Time
How to calculate what an ERV does to air-conditioner run time, step by step, with the Psychrometric Chart 2-Condition Calculator and a worked example.
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How to Use the Cooling Load Ballpark Estimator
How to use the Cooling Load Ballpark Estimator: a pre-design and design-phase "sanity check" for your load calculation.
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Vapor Pressure Deficit (VPD) Calculator
How to use Adicot's Vapor Pressure Deficit (VPD) Calculator to set the temperature and humidity in an indoor grow room, with a video walk-through.
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How to use the Commercial Kitchen Exhaust Hood Calculator
A step-by-step video walk-through of the Commercial Kitchen Exhaust Hood CFM Estimator, which sizes hood exhaust for cooking equipment per ASHRAE and the IMC.
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How to Use the Duct Size Calculator (Ductulator)
Step by step: size a round or rectangular duct with Adicot's free Duct Size Calculator (ductulator), check an existing duct, and convert round to rectangular.
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Collecting Building Info for Load and Energy Calcs
How one client laid out building information for our load and energy calculations: a best-practice example of what to collect and how to present it.
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Heat Load Calculations - Baseline vs High Efficiency
Baseline vs high-efficiency loads for a geodesic-dome building: how air tightness, LED lighting, better glass and pretreated outside air shrink them.
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Venice Island Renovation
Before and after photos of a complete restoration of a 1954 mid-century modern house on Venice Island, Florida, from the studs out.
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AutoCAD Tips & Cheats
AutoCAD's capabilities are so vast, and finding solutions to problems can be an arduous task. This post lists useful AutoCAD Tips & Cheats.
