How to Use the telliSize Sizing Calculator

To size your property for the correct energy source, select either of the following: 

• For natural gas or propane: Click on the flame icon on the left-hand side to size your property for our ultra-efficient on-demand products. You can choose from natural gas or propane in the next step. 
• For electric: Click on the thunderbolt icon on the right-hand side to size your property for our revolutionary tankless heat-pump water heating system.

Selecting the energy source is a required step. You won’t be able to size your property without making this selection. 

• Select the appropriate property type for your commercial facility. Our calculator is optimized to provide the most accurate results based on real hot water usage data from hundreds of properties for each type.
• (Gas Only) If your property type is not listed, or if you’re unsure, please select “Other.”
• (Electric Only) We are working on expanding our tool’s capabilities to include more property types for electric sizing. You can email our sales team in case you would like to custom size your property at sales@intellihot.com.

Selecting the property type is a required step. You won’t be able to size your property without making this selection. 

Now its time to identify the hot water fixtures in your property: 

• In some cases, the fixture fields may be hidden if you haven’t entered your property type in the “business type” field. Please select the appropriate business type to unhide the fixture count fields.
• Can’t find a fixture type? Click on the orange-colored text “Show more” to expand the fixture counts list and see more options. 
• For some property types (like hotels), the number of rooms field in the previous step will pre-fill some fixture counts like “Private Lavatory.”
• Verify or enter the count of all the hot water fixtures in your property. 
• If you have high temp fixtures in your property, you can identify the high-temp fixtures by checking the “High Temp” checkbox field next to the appropriate fixture. 
• Once you’re satisfied with your selections, click on “Calculate Project Size.” Voila, you’re done!

Before you can see your sizing results, you need to enter some basic details to identify your project. These details will help you identify and manage multiple sizing projects that you may have: 

• Enter your project’s name or number in the “Project Name/Number” field. This is usually the name of the property like “Comfort Hotel New York” 
• (Optional) You can enter the name of the installing contractor and specifying engineer if you wish. These details will be populated on your sizing letter in case you wish to forward it to other members of your project team. 
• Enter your first name, last name, company, email, and phone number in the appropriate fields. 
• (Optional) Leave any comments or notes about your project in the “Project Description” field.
• Want to change something? You can return to the previous screen to change any of your inputs by clicking on “Modify Project Details” 
• Click “Submit” when you’re done. Your sizing is complete! 

You’ve successfully sized your project. Wasn’t that easy? Here’s where you can access your sizing results: 

• If you logged in with an account, you will be able to see your sizing results on the screen itself. 
• If you sized your project without logging in (by clicking on “Continue as a guest”), your sizing results will be emailed to you in the email address provided. 
• (For logged-in users): Click on “Download Report” to download the sizing letter.

Your sizing results: 

• telliSize provides 3 different sizing options for your property. One option provides the highest cost-saving benefits. Another option provides the best redundancy. And a third option balances cost-savings and redundancy.
• Each option mentions the percentage of added capacity it provides. All the sizing results are guaranteed to meet 100% of your hot water needs (based on the details provided by you). If the results cannot meet your hot water demand, we pay for any additional equipment.