New books available now!
Check out our shop page to see the new books all about HVAC and how to create the perfect environment in your home.
RESIDENTIAL & LIGHT COMMERCIAL
LOAD CALC, ENERGY CALC AND HVAC DESIGN EXPERTS
ENGINEERING QUALITY AT PRICES YOU CAN AFFORD
ProCalcs specializes in HVAC Load Calculations, Energy Calculations, Manual D, Manual S, Manual T, and more!
Energy Efficient Products
Affordable, High-Quality HVAC Load and Energy Calculations
Why Choose ProCalcs?
ProCalcs addresses the needs of residential and commercial builders, architects, engineers, HVAC companies, and homeowners by delivering high-quality results and flexible turnaround times.
Services

Find out how much you can save on your project!

LEARN MORE ABOUT HVAC MISCONCEPTIONS
In this world, we often find ourselves at the mercy of those whom we assume know more than us. This can cost us time, money, energy, and even our health.
Heating and Air Conditioning systems run on simple principles and ignorance of those can cost you more than you can dream! This book gives you the tools to empower yourself so you will never again have to blindly trust what others are telling you and you can troubleshoot minor problems yourself.
In a rush? Ask about our
Expedited Services*
*when available. Extra fees apply.
OUR SERVICES
Manual J Calculations
Manual J Load Calcs – Determines the total amount of heat gained or lost externally or internally in residential properties.
Manual N Calculations
Determines the total amount of heat gained or lost externally or internally, in small- to medium-sized commercial buildings.
Manual T Calculations
Feeling drafts? We can help eliminate your problems associated with moving air or having an inadequate mixing of the air.
Manual S Calculations
Covers sizing strategies for all types of cooling and heating equipment, as well as how to use manufacturer’s performance data!
Manual D Calculations
The ANSI-recognized national standard for residential HVAC duct design will help you design a duct system in less time.
HVAC Design for Contractors
ProCalcs’ Calculations is certified for duct design, test and balance, Manual D certified, and holds a class “A” license.
HVAC Design for Builders
ProCalcs’ professionals determine the best HVAC and duct systems to meet state codes to ensure your project goes smoothly. We offer complete HVAC design solutions.
HVAC Design for Homeowners
Are you getting the right system for YOUR home? We ensure your new system meets all applicable codes and is sized exactly for your needs.
HVAC Design for Architects
We understand the mechanics, designs, flows, and formula required for a specific project so your bids are as accurate as possible.
Get your Free Consulting
Have an idea, a dream? We can make it happen.