RED Calc Pro
RED Calc Pro is the premier web application for performing, organizing, storing, and reporting building science calculations needed by energy-efficiency professionals.
RED Calc Pro tools make your work easier, faster, and add to your credibility with your customers and clients. The tools are significantly enhanced RED Calc Free tools, including many advanced features such as full offline functioning, folder creation, tool templates, saving to the RED cloud, and much more. Please look over the RED Calc Free and RED Calc Pro Features Comparison table, below. Also notice the Current RED Calc Pro Tools table, below.
We have spent years developing the RED Calc Pro Free tools. You have told us about what you like and don’t like for features and tools. We have listened. Your ideas are now included in the RED Calc Pro tools, including automatically saved data, folders for organization the way you want it, tool and folder templates to streamline your work, custom reports for your clients and supervisors, and much more.
- Collect on-site data using any device — smartphone, tablet, laptop, or desktop.
- Mobile friendly, responsive to any screen size or format.
- Works with most contemporary browsers, including Chrome, Safari, and Firefox.
- Works perfectly when you are offline, syncing with RED Cloud when you are online again.
- Automatic cloud storage allows you to access your data from all your devices.
- Use customizable pre-filled templates.
- Create an unlimited number of folders to organize your work.
- Create PDF reports with customizable headers (you can include your logo!) and footers.
Do Your Work Like a Pro
| RED Calc Free and RED Calc Pro Features Comparison | ||
|---|---|---|
| Features | RED Calc Free | RED Calc Pro |
| Pricing | Free | Monthly or Yearly |
| Works on major browsers | ||
| Based on consensus codes and standards | ||
| Choice of U.S. and metric units | ||
| Math on-the-fly calculator for inputs | ||
| Expanding/collapsing tool sections | ||
| Context-sensitive help | ||
| Mobile friendly | ||
| Fully functional offline mode | ||
| No advertising | ||
| Organize your work/jobs with folders | ||
| Autosave data to secured RED Cloud | ||
| Lock folders and tools for data protection | ||
| Multi-tab window syncing | ||
| Custom folder and tool templates | ||
| Notes tool for your details | ||
| Step control for input values | ||
| Enhanced input validation | ||
| Auto-Repair characteristics | ||
| PDF reports | ||
| Customizable report headers and footers | ||
| Detailed results info on click | ||
Ventilation
- ASHRAE 62.2-2019
- ASHRAE 62.2-2016
- ASHRAE 62.2-2013
- ASHRAE 62.2-2010
Airflow Measurement
- ACH50
- Air Leakage Metrics
- Box Airflow
- Depressurization
- Pitot Tube Airflow
- ZPD
Insulation
- Dense-Pack
- Infrared R-Value
- Loose-Fill
Moisture
- Moisture Metrics
- Wood Moisture
DHW
- Volume per Use
Electrical Use
- Electrical Usage
Miscellaneous
- Notes: add custom notes to folders
- Units Calculator
- Chrome
- Desktop/laptop for the latest version
- Mobile for Android (v4.4+)
- Not supported for iOS (iPhone and iPad)
- Safari
- Mac: 11.1+
- Mobile for iOS iPhone and iPad: iOS 12+
- Safari not supported for PCs
- Firefox
- Desktop/laptop: Latest version
- Opera
- Desktop/laptop: Latest version
- Internet Explorer
- Not supported, with no intention to support
- Edge
- Desktop/laptop for version 80 and higher
- Mobile for Android (v4.4+)
- Not supported for iOS (iPhone and iPad)
- Lumia
- Not supported (Windows phone)
Test for Browser Compatibility
The box above indicates whether RED Calc Pro will run properly in the browser you are using now.
Individual Subscription Plan
You may subscribe to RED Calc Pro as an individual or as a team. The Individual subscription plans are renewed automatically, either on a monthly or yearly basis, until you stop your subscription. Each Individual plan includes a free, two-week test period. You may cancel your subscription during this test period before your credit card is changed.
Team Subscription Plan
Team subscription plans are a great choice for organizations, either WAP agencies or private organizations. As with Individual plans, they may be purchased on a monthly or yearly basis and are renewed automatically until the subscription is stopped. A Team must include two or more subscribed seats. If an individual occupying a seat is transferred to another department, her seat can be assigned to someone else. This transfer cannot be done with an Individual subscription; this is one of a number of advantages of Team subscriptions. Each team must have an owner/manager (the person paying for the seats), who may or may not occupy one of the seats. The number of seats in a Team can vary over time, for example, additional seats can be added as an organization grows (if seats are added by the owner/manager, these new seats must be based on the same subscription period as the existing seats, either monthly or yearly). If the number of seats is reduced, the eliminated seats will remain active until the subscription period expires, based on month or year. 
| Purchase Plan | Monthly Subscription | Yearly Subscription |
|---|---|---|
| Individual Plan, per subscription | $19.99 | $199.00 |
| Team Plan, per seat | $18.99 | $189.00 |
- All subscriptions/purchase plans include a 30-day free trial. Your credit card is not charged until the end of this free period.
- Monthly and yearly subscriptions renew automatically unless you stop your subscription.
- Other payment options are available. Please contact us.
- Confirmed trainers get a 50% discount on a yearly subscription. Please contact us.
- Residential Energy Dynamics does not store your credit card information.
- Team seats are interchangeable among individuals but must be assigned by the team owner/manager. The team owner/manager logs into the RED website for management activities, such as adding seats or changing seat assignments. Teams may not combine monthly and yearly subscriptions. More about teams. . .
With the button link below, you will not be able to purchase a subscription to RED Calc Pro, but if you have already done so or are thinking of doing so, looking over the “Getting Started” information will be helpful. This page reveals more details about RED Calc Pro, including the user interface, features, tools, reports, RED Cloud, and more.
“Every weatherization agency and contractor should be using Red Calc Pro Tools!
I use the ASHRAE 62.2 tool for every weatherization job that we audit and QCI. Red Calc Pro Tools gives me the ability to create a specific job folder and load the information pertaining to the specific job at any point in the process and it is there when I need it. For QCI work, this drastically reduces the time I need to spend calculating the final continuous-run CFM or runtime.
When I QCI, I have everything loaded before heading to the job except for the final readings. Once I run the blower door test and complete the exhaust fan flow test, those numbers only take a moment to load in the field and instantly I have the finish data necessary to complete the ASHRAE 62.2 portion of the job. In addition, when I get back to the office, it takes just a few steps to generate the PDF report, save it electronically, and print out a hard copy for the client file.
I like being able to switch devices and still be able to have the information at my fingertips. I can use my smart phone while in the field and once back to the office, I can pull up the report using my iPad. I don’t have to transfer files from one device to another which is a huge time saver. I can also be meeting in person with my contractor and can instantly pull up the ASHRAE 62.2 report.
You have been very helpful with answering questions and taking time to find answers when the answer wasn’t immediately available or known.
I will be a Red Calc Pro Tool user for the remainder of my career!”
Ken Vance
“As a home performance professional, I write energy audit reports as well as improvement project estimates to air seal, insulate, ventilate, and heat homes efficiently.
Whether working with architects and builders or homeowners, my RED Calc Pro subscription enables me to generate informative, focused reports that look sharp and contain valuable, actionable information to industry professionals and homeowners alike.
Tools relating to ventilation sizing aid in setting goals for a project I am designing and enable me to have well informed conversations with homeowners about expectations and possible follow up work to plan for. For example: how much can our crew tighten the home before we need to install ventilation? And, if the home becomes tight, how much ventilation is needed to ensure that there is a healthy supply of fresh air?
30 – 45 minutes on RED Calc Pro prior to writing my report provides valuable analytical information to back-up and supplement my writing and recommendations. I can’t overstate how useful these tools are that you have developed.”
Tom Linder
“I am an energy auditor, Quality Control Inspector, and consultant in the State of Ohio. The majority of my work is with the Home Weatherization Assistance Program and with local utility weatherization programs. In addition, I am contacted by private homeowners requesting assessment of their homes for efficiency and comfort.
The RED Calc Pro allows me to produce a report that is specific to the individual home and can be printed or kept as a PDF. The ASHRAE 62.2-2016 reports are customizable so I can include where the exhausting equipment is located or other comments. I can customize the report to state “Master Bathroom” or “Hallway Bathroom” which assists contractors, crews, and homeowners with information on the location and performance of the equipment.
I print the report and include it with the other paperwork / photos / drawings of the home that I have obtained. Even though documentation of the ASHRAE 62.2 testing is required for the Weatherization Assistance program, I feel that a quality, customized report showing what may be needed or that compliance has been met, sets my work and my company apart from others. This is even more important when working with private homeowners who are expecting to receive helpful information, either from data included in reports, photos, or other explanations as to why they may be having efficiency or comfort issues. A helpful report providing recommendations must be more than just words.
In my opinion, the RED Calc Pro is a great tool to have available. The results and generated reports help explain efficiency and comfort issues, and verify completed work at the homes I visit. I think this tool is a must have for anyone performing Weatherization or Home Performance Contracting and anyone who wants to distinguish themselves and their company from others.”
Tom Andrews
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What browsers and devices are supported by RED Calc Pro tool?Supported Browsers and Devices (as of September 2019)
- Chrome
- Desktop/laptop for the latest version
- Mobile for Android (v4.4+)
- Not supported for iOS (iPhone and iPad)
- Safari
- Mac: 11.1+
- Mobile for iOS iPhone and iPad: iOS 12+
- Safari not supported for PCs
- Firefox
- Desktop/laptop: Latest version
- Opera
- Desktop/laptop: Latest version
- Internet Explorer
- Not supported, with no intention to support
- Edge
- Desktop/laptop for version 80 and higher
- Mobile for Android (v4.4+)
- Not supported for iOS (iPhone and iPad)
- Lumia
- Not supported (Windows phone)
- Chrome
You may perform a real-time compatibility test between your browser/device and RED Calc Pro. -
Is the RED Calc Pro web app mobile friendly?Yes, the RED Calc Pro app will run effectively on devices of any screen size with an approved browser. Below is a screenshot of the RED Calc Pro ASHRAE 62.2-2016 tool on iPhone.
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Does Math-on-the-fly work for RED Calc Pro tools?Yes, it does. You may perform basic mathematical operations in most input boxes, including addition (+), subtraction (-), multiplication (*), and division (/). You may also use parenthesis ( ) as part of your operations. The screenshot below shows math-on-the-fly turned on for the highlighted input, Floor area. When you click outside of the input box, the result of the math operations is displayed, in this example, 2000 square feet.
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How do the features of RED Calc Pro and RED Calc Free compare?
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Can I print save and print reports for RED Calc Pro tools?Yes, your tools reports are saved and you can download or print them as PDF files. You can also create a default header and/or footer for all your tool reports and/or create individual headers and footers of tools. Below is a screenshot of the ASHRAE 62.2-2016 too showing a custom header. This PDF can be downloaded and saved and printed.
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Does RED Calc Pro work if I don’t have an internet connection out in the field?Yes, the web app does work seamlessly without an internet connection. When you have a connection again, all your work will be synced and saved to the RED Cloud. We have even built-in Offline Data Recovery if you happen to access your RED Calc Pro account from another device when you still have offline data stored on the first device. We’ve got you covered! Notice the RED Cloud icon in the upper right section of the RED Calc Pro screen below on a smartphone. This RED Cloud icon always gives you the status of your internet connection and whether data is being transferred to or from the Cloud.
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Can I lock a tool or folder to guard against mistakenly changing something?Yes, you can lock a folder or a tool by clicking on the open-lock icon to the right of each folder or tool. If you lock a folder, all the tools in that folder will be locked, also. If you attempt to alter an input value in a locked tool, a closed-lock icon will flash in the input box to remind you it is locked. In order to unlock a folder or tool, click on the closed-lock icon.
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What are the INDIVIDUAL subscription options for RED Calc Pro?You may subscribe to RED Calc Pro as an individual or as a team. The Individual subscription plans are renewed automatically, either on a monthly ($19.99) or yearly ($199.00) basis, until you stop your subscription. Each Individual plan includes a free, two-week test period. You may cancel your subscription during this test period before your credit card is changed.
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What are the TEAM subscription options for RED Calc Pro?Team Subscription Plans are a great choice for organizations, either WAP agencies or private organizations. As with Individual plans, they may be purchased on a monthly ($18.99) or yearly ($189.00) basis and are renewed automatically until the subscription is stopped. A Team must include two or more subscribed seats. If an individual occupying a seat is transferred to another department, her seat can be assigned to someone else. This transfer cannot be done with an Individual subscription; this is one of a number of advantages of Team subscriptions. Each team must have an owner/manager (the person paying for the seats), who may or may not occupy one of the seats. The number of seats in a Team can vary over time, for example, additional seats can be added as an organization grows (if seats are added by the owner/manager, these new seats must be based on the same subscription period as the existing seats, either monthly or yearly). If the number of seats is reduced, the eliminated seats will remain active until the subscription period expires, based on month or year. Read more about Team Subscriptions
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What happens after I purchase a subscription to RED Calc Pro?When your credit card is accepted on the RED website (we do not store your credit card information, it is retained by Stripe, a reputable credit card processor), you are automatically logged in as a subscriber on the RED website, www.redcalc.com, and you will be transported to the My RED Account page dashboard. From here you can immediately launch the RED Calc Pro web application by clicking the blue button “Launch RED Calc Pro”. This transport you to the RED Cloud where the RED Calc Pro application and user data are stored.
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Must I purchase RED Calc Pro with a credit card?We will consider your purchase without a credit card, but we cannot ensure we will be able to do this. Please contact us with your request; we will get back to you quickly. Please use our Contact-Us form for your request.
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What if the credit card I used to purchase my RED Calc Pro subscription has expired and I want to ensure that my subscription is automatically renewed without delay?You can enter your new credit card information on the My RED Account page dashboard by going to “Payment methods”. Click on “Payment methods” and then click on the red button “ADD PAYMENT METHOD”. Enter your new credit card data and click on the larger red button “ADD PAYMENT METHOD” to save your credit card information. This will ensure that your subscription to RED Calc Pro is renewed seamlessly.
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May I resubscribe to RED Calc Pro after my subscription has ended (expired) or been canceled?After your subscription has expired or been canceled, you can create a new subscription by resubscribing from the My Account page (Note: when your subscription has expired or been canceled, you will still be able to log in at the REDcalc.com website, but you will not be able to access the RED Calc Pro web application after your subscription has expired or been canceled). On the menu to the left of the page shown below, go to “My Subscription. Then use the “RESUBSCRIBE” button on the My RED Account page to resubscribe to an expired or canceled subscription.
Then optionally change any billing details and then click on “Order Now”. You will now have immediate access to the RED Calc Pro web application and you will receive a confirmation email.