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Tankless Water Heater Installation

The Department of Energy estimates that for homes using 41 gallons of hot water or less each day, tankless water heaters can be 24 to 34 percent more energy efficient than conventional storage tanks, because they heat water only when a tap opens. Performance Plumbing, Heating & Air Conditioning, Inc. provides tankless water heater installation in Pasadena, CA and across the San Gabriel Valley, sizing units to your peak demand, confirming gas line and venting capacity, and adding isolation valves for easy descaling. With 40+ years in plumbing and heating, we explain every option clearly and price installations upfront. Your old tank is removed and hauled away.

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ENDLESS HOT WATER STARTS WITH CORRECT SIZING.

A tankless heater is rated by flow rate and temperature rise, not tank size. If it is undersized, running two showers and a dishwasher together can leave someone with lukewarm water. We calculate your peak demand based on fixtures and household routines, then recommend a unit that keeps hot water flowing when everyone needs it.


We also confirm that your gas supply and venting can fully support the unit, since gas tankless heaters often require considerably more gas capacity than the older tanks they replace.

  • Sizing based on peak hot water demand
  • Gas line and venting capacity check
  • Isolation valves for easy flushing
  • Upfront pricing on every installation
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TANKLESS WATER HEATER INSTALLATION

SPACE-SAVING, ENDLESS HOT WATER FOR PASADENA HOMES.

Pasadena households are increasingly replacing bulky storage tanks with compact, wall-mounted tankless units that free up space in garages and closets. Beyond saving room, tankless heaters deliver continuous hot water and eliminate standby heat loss from a tank that stays hot all day. We evaluate your home's layout, gas service, and venting options, then plan an installation that looks clean, operates efficiently, and supports your household's real hot water needs.

ISOLATION VALVES ARE HOW WE PLAN FOR LOCAL SCALE.

Hard water throughout the San Gabriel Valley deposits scale inside tankless heat exchangers, which can trigger error codes and reduce efficiency over time if ignored. We plan for those conditions from the start by installing isolation valves that make descaling simple, discussing water treatment options where helpful, and explaining a practical maintenance schedule so your tankless heater keeps performing reliably for many years.

SIZING A TANKLESS UNIT IS MATH WE NEVER SKIP.

Many tankless complaints come from installations sized by guesswork, leaving households with cold-water surprises during busy mornings. With 40+ years in plumbing and heating, we calculate demand, check gas pipe sizing and meter capacity, and plan venting before recommending a unit. That preparation prevents the most common tankless disappointments and keeps hot water steady when multiple fixtures run together. Ready to reclaim space and enjoy endless hot water?

WHAT A TANKLESS WATER HEATER INSTALLATION DELIVERS.

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Continuous Hot Water

Tankless heaters warm water on demand, so back-to-back showers and busy laundry days no longer drain a limited supply stored in a tank. Most households notice quickly.

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Lower Energy Use

Heating water only when needed eliminates standby losses from a constantly heated tank, reducing gas or electricity use and lowering monthly utility bills over time.

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Space Savings

Compact wall-mounted units replace bulky tanks, freeing valuable floor space in garages, closets, and utility rooms for storage or other household uses. Garages feel bigger.

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Longer Service Life

Well-maintained tankless heaters often last longer than traditional tanks, and many major components can be replaced individually rather than replacing the entire unit. Repairs stay affordable.

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No Tank Flooding Risk

Without a large storage tank, there is no risk of a corroded tank rupturing and flooding your garage or closet with dozens of gallons of water.

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Easy Maintenance Access

Isolation valves installed during setup make annual descaling quick and straightforward, protecting efficiency and preventing scale-related error codes caused by hard water. The value adds up steadily.

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our services

OUR TANKLESS WATER HEATER INSTALLATION WORK.

We install tankless water heaters throughout Pasadena and the San Gabriel Valley, handling sizing, gas supply, venting, and water connections so each system performs reliably and efficiently from day one. Every job starts with honest answers.

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GAS UNITS

Gas Tankless Installation


Gas tankless heaters deliver strong flow rates for busy households. We confirm gas line sizing and meter capacity, install proper venting, and verify combustion and temperature performance after startup. Every job is tested.

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TANK SWAP

Tank To Tankless Conversion


Converting from a storage tank to tankless requires new gas, venting, and water connections. We remove the old tank, plan clean routing, and install the new unit for efficient, long-term operation.

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GAS SUPPLY

Gas Line Upsizing


Many tankless units need more gas than older tanks. We evaluate existing piping and upsize lines when necessary, ensuring the heater receives adequate fuel during peak hot water demand. Care comes standard.

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VENT WORK

Tankless Venting Installation


Tankless heaters use specific venting materials and termination clearances. We install venting according to manufacturer requirements, directing exhaust safely outdoors and away from windows, doors, and air intakes. Clearances are measured.

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SERVICE VALVES

Isolation Valve Installation


Isolation valves allow technicians to flush scale from the heat exchanger without disconnecting plumbing. We install them during setup so future descaling is quick, simple, and far less costly. Pricing comes upfront.

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FASTER DELIVERY

Recirculation Setup


Recirculation options reduce the wait for hot water at distant fixtures. We explain available approaches for your layout and configure compatible systems so hot water reaches faucets faster. We explain every step.

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WHAT OUR CLIENTS SAY.

THE WORD ON OUR WORK

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THE WORD ON OUR WORK

WHAT OUR CLIENTS SAY.

Customers who switch to tankless heaters with us often mention how carefully we explained sizing and gas requirements. They appreciate the extra space in their garage, clean venting work, and finally enjoying hot showers without anyone waiting their turn. Many have referred friends since.

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FAQ

FREQUENTLY ASKED QUESTIONS.

Switching to a tankless water heater raises questions about sizing, gas supply, maintenance, and performance. These answers explain what homeowners should know before converting from a traditional storage tank.

    How Does A Tankless Water Heater Work?

    When a hot water tap opens, cold water flows into the unit, a sensor detects the flow, and the burner or element heats the water as it passes through a heat exchanger. No stored water is kept hot between uses.

    How Do I Size A Tankless Water Heater For My Home?

    Sizing depends on how many fixtures might run together and how much the incoming water must be heated. Adding the flow rates of simultaneous fixtures determines required capacity, which guides the unit size we recommend for your household.

    Will I Need A Larger Gas Line For A Tankless Heater?

    Often, yes, they do. Many gas tankless units require substantially more fuel than older tank heaters, so existing lines may be undersized. We evaluate pipe size, length, and meter capacity during the estimate and explain any upgrades needed.

    How Often Does A Tankless Heater Need Descaling?

    Most manufacturers recommend descaling at least once a year, and hard water areas like Pasadena may need attention more often. Isolation valves make flushing straightforward, preventing scale buildup that reduces efficiency and triggers error codes inside the unit.

    Is A Tankless Water Heater Worth The Investment?

    For many households, it is, thanks to lower energy use, longer lifespan, space savings, and continuous hot water. Upfront costs are higher than tank models, so we compare realistic long-term savings based on your household's actual hot water use.

    Can A Tankless Heater Supply Several Showers At Once?

    A properly sized unit certainly can, as long as its flow rate covers the fixtures running together. Undersized units struggle during peak demand, which is why careful sizing matters more than any other decision in a tankless installation.

    Do You Handle Tank To Tankless Conversions?

    Absolutely, and often. Performance Plumbing, Heating & Air Conditioning, Inc. converts storage tank systems to tankless heaters throughout Pasadena, CA, handling gas line upsizing, venting, water connections, and removal of the old tank so the entire project stays with one team.

    Why Choose Us For Tankless Water Heater Installation In Pasadena?

    Homeowners in Pasadena, CA choose Performance Plumbing, Heating & Air Conditioning, Inc. because we size every single unit carefully, verify gas and venting capacity, and install isolation valves for easy maintenance. Upfront pricing and honest recommendations accompany every tankless project.

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    HOW WE WORK

    FROM STORAGE TANK TO ENDLESS HOT WATER, HERE IS HOW.

    STEP 01

    WE STUDY YOUR DEMAND

    We review your household size, fixtures, and daily routines to understand peak hot water demand. That information determines the flow rate and temperature rise your tankless heater must deliver reliably. Questions are always welcome.

    STEP 02

    WE CHECK GAS AND VENTING

    Our technician evaluates gas pipe sizing, meter capacity, and venting options. Confirming these details early prevents performance problems and identifies any upgrades needed before installation day begins. Nothing gets rushed or skipped here.

    STEP 03

    WE PRESENT THE OPTIONS

    You receive recommendations for suitable units with upfront pricing, including any gas line or venting work required. We explain tradeoffs honestly so you can choose the best system for your home. Every detail gets checked.

    STEP 04

    WE INSTALL THE UNIT

    We remove the old tank if needed, mount the tankless heater, connect gas and water lines, install venting, and add isolation valves. Every connection is tested for leaks before startup. Accuracy matters here.

    STEP 05

    WE COMMISSION THE SYSTEM

    After installation, we start the unit, verify gas pressure and combustion, adjust temperature settings, and run multiple fixtures to confirm the heater keeps up with your household's real demand. That step protects you.

    STEP 06

    WE EXPLAIN MAINTENANCE

    Finally, we show you how the unit operates, explain error codes, and recommend a descaling schedule suited to Pasadena's hard water. You leave confident in how to care for your new system. Cleanup is part of it.