Use our spreadsheets to keep track of your projects, client & customer contact information, and all your business data. We can customize them to meet your specific needs.
Our CalcSheets are spreadsheets that provide quick calculations or estimates. They are Excel spreadsheets with built-in formulas, lookup tables, macros & VBA to automate the routine yet tedious tasks involved in some HVAC calculations. Use them to standardize your company forms and calculation sheets. We can customize them to suit your specific needs. They can save you a substantial amount of time, reduce errors, and ease your work.
Various HVAC topics are discussed in this website. Information are meant to be used in your daily design work or as a reference. Additional topics will be added. Check this section frequently for updates.
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to the HVAC Notebook Website!
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Last Update: 2/3/2018
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 CALCSHEETS
This website contains relevant information a HVAC Engineer needs to quickly & effectively perform his/her daily tasks. Such as frequently used data, references, and recommended sizing criteria. In addition, our CalcSheets are Excel spreadsheets developed to automate the routinely repetitive tasks involved in most HVAC calculations. (eg. table look-up, unit conversions, sizing, cost estimates)

We also have business and finance spreadsheets. All were designed to organize and simplify your everyday work.
 HVAC / ENGINEERING SPREADSHEETS
 BUSINESS SPREADSHEETS
The CalcSheets & information in this website are intended for users with basic knowledge of HVAC design. The developers of this website is not responsible for any errors in the spreadsheets or information posted in this website. See the Disclaimer page for additional information.
 DISCLAIMER
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We have spreadsheets to help you quickly analyze your projects. Use them to better understand your data.
 FINANCE SPREADSHEETS
Energy operating cost calculation is now simple with our spreadsheets. Use them to quickly understand the energy costs and potential savings before making decisions.
 ENERGY CONSERVATION SPREADSHEETS
   ID              FREE Standard CalcSheets  (ENGINEERING)      View  Download
M1
 QuickCalcs-HVAC (Sample).xlsm
B4
 Contacts.xlsx
B5
 Employee Time Off 2018.xlsx
G6
 Unit Conversions (Sample).xlsx
A1
 Smoke Purge Airflow Calc.xlsx
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   ID               FREE Standard CalcSheets  (BUSINESS)         View  Download
B1
 Business Cashflow.xlsx
B2
 Business Expenses.xlsx
B4
 Contacts.xlsx
B5
 Employee Time Off 2018.xlsx
G1
 Math.xlsx
F1
 Net Present Value (1 to 15 years).xlsx
F2
 Life Cycle Cost Analysis (1 to 15 years).xlsx
F3
 Simple Payback.xlsx
F4
 Payback Analysis (1 to 10 years).xlsx
F5
 Payback Analysis (1 to 10 years 2 Options).xlsx
F6
 Financial Cost Benefit Analysis (1 to 10 years).xlsx
F7
 Financial Cost Benefit Analysis (1 to 10 yrs, 2 Opts).xlsx
Full List of CalSheets