Tankless Water-Heater Services
Installation
Sizing, gas/electrical planning and setup for a home that’s never had a tankless unit.
Replacement
Swapping an aging tank-style or tankless unit for a new system matched to household demand.
Repair
Diagnosing error codes, flow problems, ignition issues and reduced output.
Descaling & Maintenance
Flushing mineral buildup from the heat exchanger to protect flow rate and lifespan.
Is a Tankless System Right for Your Property?
Signs it may be worth evaluating: running out of hot water during back-to-back showers, limited installation space, planning a tank replacement anyway, or high standby energy use. That said, tankless can involve larger gas-line sizing and dedicated venting — a traditional tank may still be the more practical option depending on your home’s existing infrastructure.
Sizing by Flow Rate and Temperature Rise
Tankless water heaters are sized by flow rate, not tank volume. Two numbers drive sizing: gallons per minute (GPM) — the combined flow rate of fixtures you expect to run at once — and temperature rise — the difference between incoming and target water temperature. We calculate expected simultaneous demand so the system can actually keep up with real usage.
Gas, Venting and Electrical Requirements
Tankless units often draw more gas input than a comparable tank unit, which can mean upsizing the gas line. Venting requirements are different, and most units need a standard electrical circuit for controls and ignition. Work involving gas-line sizing, venting or new electrical circuits typically requires a permit through the City’s SimpliCITY portal.
Smell gas near your water heater? Leave the area, avoid switches, and contact your gas utility or emergency services from a safe location before calling us.
Tankless Repair, Descaling and Maintenance
Common issues include error codes, reduced or fluctuating temperature, delayed delivery, and a drop in flow rate over time. Mineral deposits collect inside the heat exchanger and reduce flow rate if left unaddressed — descaling flushes the heat exchanger through the unit’s isolation valves.
Tankless Cost Factors
Gas-line sizing, venting changes, electrical work, isolation valves, and permit/inspection requirements all affect cost.
Tankless Water Heater FAQs
How long does a tankless water heater last compared to a tank?
Tankless units are often built for a longer service life than tank-style heaters, though actual lifespan depends on water quality, usage and maintenance.
Do I need a bigger gas line for a tankless water heater?
Sometimes. Tankless units often need more gas input than a comparable tank heater, so we check your existing gas-line sizing first.
Is a permit required for a tankless water heater installation?
Work involving gas-line changes, venting or new electrical circuits typically requires a permit through the City’s SimpliCITY portal.
Why does my tankless water heater deliver inconsistent temperature?
This can point to flow-rate demand exceeding capacity, a venting issue, or scale buildup inside the heat exchanger.
How often should a tankless water heater be descaled?
It depends on your water hardness and household usage. Isolation valves make descaling possible without draining your whole water system.
Can a tankless water heater supply my whole house at once?
It depends on the unit’s rated flow rate versus how many fixtures you run simultaneously. We calculate this during sizing.
Ready to Talk Through Tankless Options?
We’ll walk through sizing, requirements and next steps for your Moreno Valley home.
Request Tankless Water Heaters