Sizing Calculator
Which one is right for you?
Wondering which Eternal model or how many you may need? Use our simple sizing calculator and find out. Just tell us about your geographical location and application (home, hotel, condos, etc). We’ll do the rest!
The calculator is currently being updated. For support please email us at eternalsales@grandhall.com
Join us at our test bench as we compare the Eternal Condensing Hybrid with a competing name brand Condensing Tankless and see the difference. Watch the video!
Want to see what actual customers think of their Eternal Hybrid™? Read our most recent reviews posted by owners and check out our testimonials section.
The original Eternal Hybrid™ shook up the industry in 2006. It even caught Ed Sander's (of ABC's Extreme Makeover: Home Edition) attention. 
