$100 off
Water heater installation
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Glendale, CA · Serving Greater Los Angeles
Get a price
in minutes.
Get hot water back.
Tank and tankless water heater repair, replacement, and installation. Call a tech 24/7 and ask about same-day availability.
Family-owned since 2008
Los Angeles tank & tankless specialists.
Natalia Calvo learned the trade in her father’s water heater business before starting On Call in 2008. Today her team helps homeowners, businesses, and property managers get hot water back and choose the right replacement.
Call with your ZIP code and the type of heater you have. We’ll talk through the job and check what’s available.
Repair · Replace · Install
Our services.
On Call offers
Our coupons.
These offers appear on the company’s website. Call to confirm availability and terms before booking. Coupons cannot be combined.
Free
Filter with tankless installation
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Half off
Repairs at the time of replacement
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Free
Consultation
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From 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
On the job
See our work.
Advice from On Call
From the blog.
What to expect when installing a water heater
From the first call to the walkthrough, here is how to prepare for a water heater replacement in Southern California.
Read guide
7 signs it’s time to compare water heater replacement
Age is one clue. Look at the tank condition, repair history, and how well the heater meets your needs today.
Read guide
Commercial tankless vs. storage water heaters
Compare the two approaches using your building’s peak demand, available space, and the cost of downtime.
Read guideService areas
Los Angeles County
and beyond.
We serve Los Angeles County and parts of Ventura, Orange, and Riverside counties. Give us your ZIP code and we’ll check availability.
See all service areas
ON THE ROAD IN GREATER LAGood to know
Water heater FAQs.
A few common questions about pricing, timing, and choosing the right service.
See all FAQsCan I get a quote over the phone?
Yes. Have your ZIP code, the model or fuel type, and a description of the issue ready. A photo of the unit can help when the scope is clear enough for a quote.
Do you offer same-day service?
Same-day appointments may be available. Call with your location and the type of service so we can check the schedule and equipment.
Are you available after hours?
Our phone line is available 24 hours a day for urgent water heater calls. Call to confirm dispatch timing for your address.
Should I repair or replace my water heater?
Consider the condition of the tank, the cost and availability of parts, previous repairs, and the age of the equipment. We can help compare the two options after discussing the issue.
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.