Commercial tankless vs. storage water heaters
Compare the two approaches using your building’s peak demand, available space, and the cost of downtime.
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Water heater guides and advice
Practical answers on choosing, maintaining, repairing, and replacing a water heater for your home or business.
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Buying a new water heater?
Start with four things you already know about your home: how much hot water you use, what powers your heater, where it fits, and what you want to spend.
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23 guides from On Call.
Why commercial water heaters need regular maintenance
A maintenance schedule gives your team a chance to address small changes before they interrupt business.
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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.
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How hard water affects your water heater
Mineral deposits can build up in both tanks and tankless systems. The symptoms and care depend on the equipment you have.
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Is a demand-type water heater right for your home?
An on-demand system can save space and avoid tank standby losses. Start with how your household uses hot water.
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How does a hybrid water heater work?
A hybrid electric heater uses a heat pump and a storage tank. Its location and operating mode matter as much as the capacity.
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Gas vs. electric water heaters
Fuel type affects the connections, cost, and equipment choices. Compare the whole installation before switching.
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When should you flush a water heater?
A maintenance visit is easiest to plan before there is an outage. The schedule depends on the heater and local water conditions.
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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.
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6 things to check before calling about water heater repair
A few observations can help a technician narrow down the cause of a water heater problem.
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A water heater maintenance plan for Southern California homes
Build a maintenance plan around your equipment, water quality, and household demand.
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How to compare the long-term cost of a new water heater
A replacement is an opportunity to compare installation costs, energy use, maintenance, and the equipment’s fit for the home.
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Is it worth repairing a water heater?
Compare the diagnosis, repair scope, remaining coverage, and expected downtime before you decide.
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What a tankless water heater can offer
A compact on-demand heater can free up space and reduce standby losses when it fits the home and the way you use water.
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What to know before a tankless conversion
A conversion changes how the heater fits your home. Here are the details to settle before scheduling.
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5 reasons to consider switching to tankless
A change in space, demand, or equipment condition can make it worth comparing an on-demand system with a replacement tank.
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Help your water heater last longer
Keep service records and watch for small performance changes so you can address them before they get worse.
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What a water heater inspection can cover
An inspection gives you a clearer view of equipment condition, connections, and maintenance priorities.
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When a sediment filter makes sense for tankless
Particle filtration and scale control address different problems. Start with what is actually present in your water.
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What to do when a water heater relief valve leaks
A temperature and pressure relief valve is a safety device. A qualified technician should assess a valve that repeatedly discharges.
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How to choose a new water heater
Choose a water heater by starting with peak demand, fuel, installation space, and your budget.
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A short guide to water heater maintenance
Four pieces of information make water heater maintenance easier to plan and track.
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Why is water pooling under my water heater?
Water under a heater can originate at the tank, a connection, or a nearby line. Call if there is an active leak.
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Need help with your system?
Call with your ZIP code and water heater details. We’ll talk through your options.