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Our story
Meet On Call Water Heaters
A Glendale-based, family-owned water heater company serving homes and businesses across Greater Los Angeles since 2008.
Meet Natalia Calvo
One family. One specialty.
Natalia started in her father’s water heater business in 2006, handling sales and learning the trade alongside him. In 2008, she started On Call Water Heaters. The company still focuses on the same thing she learned in the family business: helping people get reliable hot water back.
Today the Glendale team repairs and replaces tank and tankless systems for homeowners, businesses, and property managers across Greater Los Angeles.
See work from the fieldFrom our customers
Client testimonials.
What customers remember about working with Natalia and the On Call team.
“very good about explaining the process”
Mishelle called after searching for a water heater specialist in Pasadena. She remembers Natalia answering her questions and explaining what to expect.
Mishelle C.Pasadena service call
“kept me updated on the arrival time”
Shengyu described a same-day appointment and praised the technician who replaced the heater.
Shengyu Z.Same-day replacement
“The job is done right, priced fair”
Anthony turned to Natalia and the team for water heater installations and tankless conversions over several years.
Anthony N.Installations and tankless conversions
Talk to a specialist
Let’s get your hot water back.
Call with your ZIP code and water heater details. We’ll talk through your options.