Tankless Water Heater Installation in Irvine, CA
FKM Plumbing provides expert tankless water heater installation throughout Irvine, CA, ensuring reliable hot water on demand.
- Gas Line Upgrades Handled
- Modern Hot Water Systems
- Energy Savings Potential
- Energy-Saving Systems
Get a Tankless Water Heater in Irvine, CA.
Contact FKM Plumbing today for a consultation and learn the benefits of a tankless water heater for your home.
Expert Tankless Water Heater Installation in Irvine, CA
FKM Plumbing knows that hard water is the biggest threat to tankless units, since scale builds up inside the heat exchanger. Municipal water across much of Southern California is hard, leaving white scale on faucets, showerheads, and inside water heater tanks. We install service valves for easy flushing and recommend a scale inhibitor or softener to protect your warranty. You get efficient, endless hot water that keeps working.
Our expertise includes:
- Installation of gas and electric tankless models.
- Condensing and non-condensing gas tankless units with PVC or stainless vent pipe
- Precise sizing and model selection for your home.

Additional Plumbing Installation Services in Irvine, CA
We install water heaters, pumps, lines, and fixtures across Irvine, CA with careful, permitted work that passes inspection the first time.

Customers
Why Choose FKM Plumbing for Tankless Water Heater Installation in Irvine, CA?
Choosing the right plumbing partner for a significant upgrade like a tankless water heater is crucial for long-term satisfaction. FKM Plumbing brings years of experience to every installation, ensuring quality workmanship and reliable performance.
- Scale Protection, Isolation valves and scale filters guard the heat exchanger from hard water.
- Longer Lifespan, Tankless water heaters typically last longer than conventional models, offering a better long-term investment.
- Space Saving, These compact units free up valuable floor space, often installed on a wall or in a small utility closet.
Citywide Coverage
From busy downtown blocks to quiet suburban streets, our team is equipped to provide top-tier tankless water heater installation across all of Irvine. Your hot water comfort is our priority, close to home.
Experienced Team
Our team of licensed plumbers brings deep experience with tankless water heater installations in Southern California homes. They are trained on current models and techniques, ensuring a reliable and up-to-code setup for your property.
Safety-First Approach
We make sure your new tankless unit is installed safely and correctly, following all manufacturer specifications and Southern California regulations. Trust FKM Plumbing to protect the well-being of your family and home during every step of the installation.
Trusted Certified Irvine Plumbing Services Professionals
At FKM Plumbing, we take pride in providing certified plumbing services throughout Irvine, CA. Backed by leading industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationDependable Tankless Water Heater Installation Services in Irvine, CA
Tankless Water Heater Replacement in Irvine, CA
If your old tankless unit is failing or you are upgrading from a traditional tank, FKM Plumbing offers seamless tankless water heater replacement. We carefully remove the old unit, make any needed adjustments to plumbing and venting and install your new, more efficient model. Our goal is to make the transition as smooth as possible, keeping continuous hot water in your Irvine, CA home.

Commercial Tankless Water Heater Installation in Irvine
Businesses often have higher and more consistent hot water demands than homes. FKM Plumbing provides commercial tankless water heater installation, sizing systems to meet the needs of restaurants, salons or other commercial spaces. We understand the value of minimal disruption to your operations during installation, providing a quick and professional setup in Irvine.
Rinnai, Navien and Noritz Installation in Irvine, CA
We install leading tankless brands including Rinnai, Navien, Noritz and Rheem. Rinnai offers a wide model range and strong parts support, while Navien condensing units often include built-in recirculation pumps. Noritz is recognized for durable commercial-grade heat exchangers. We help you compare models by flow rate, efficiency and warranty.
Residential Tankless System Upgrades in Irvine
Upgrading your traditional hot water tank to a tankless system in Irvine can significantly improve efficiency and comfort. We assess your home's hot water demands, existing plumbing and utility connections to recommend the best tankless model for your household size and usage patterns. Our team manages the entire conversion, including the safe removal and disposal of your old water heater, minimizing disruption to your daily routine.
Residential Tankless Water Heater Installation in Irvine
FKM Plumbing focuses on installing tankless water heaters for residential properties. We assess your home's hot water demands, family size and existing utility connections to recommend the most suitable unit, so you get the right capacity for your needs. Our installations are designed to be energy efficient, providing endless hot water while often lowering your monthly utility bills in Irvine.
Tankless vs Tank Cost Comparison in Irvine, CA
Tankless installation costs more upfront than a standard tank because of the unit price, gas line upgrades and venting changes. Over time, lower standby energy losses and a longer expected lifespan make up for part of that cost. Tankless units often last 15 to 20 years with proper descaling, compared with about 8 to 12 years for many tanks in hard water areas. We give you a side-by-side quote so you can decide what suits your budget.
Propane Tankless Water Heater Installation in Irvine
Many homes outside natural gas service areas rely on propane. FKM Plumbing is experienced in installing propane tankless water heaters, which require specific gas line sizing, regulator adjustments and venting. We make sure your propane system is installed correctly for maximum efficiency and safety, providing reliable hot water for your Irvine residence.

Recirculation Systems for Tankless Heaters in Irvine
Tankless heaters can take a few extra seconds to deliver hot water to distant fixtures. A recirculation pump or dedicated return line keeps hot water close to faucets, reducing wait time and water waste. Some units have built-in pumps with smart scheduling. We design the system to suit your plumbing layout and usage patterns.
Tankless Water Heater Installers Near Me in Irvine, CA
Our plumbers install tankless heaters in Irvine regularly and know local permit and inspection requirements. We stock common models and parts to keep projects moving. You get a clean, professional installation and clear instructions on maintenance.
Our local presence means faster response times and a team that understands the challenges and opportunities for tankless systems in Irvine. We are committed to bringing modern, efficient hot water to every home in our community.
FKM Plumbing at a Glance
- Licensed and insured plumbers serving Irvine, CA
- Same-day appointments and 24/7 emergency response
- Clear written estimates, no hidden fees
- 4.8-star rated by 754+ Southern California customers
Irvine Map
Irvine Information
- Population
- 314,621
- Area codes
- 949/714/657
- Service area
- Irvine and communities within 40 miles
- Nearby
- Tustin, Lake Forest, Santa Ana, Mission Viejo
Installing a tankless water heater in Irvine, CA can significantly boost energy efficiency and provide endless hot water, a worthwhile upgrade for homes dealing with hard water and changing seasonal demand.
Expert Services
Trust our professionals for reliable FKM Plumbing solutions in Irvine, CA.
Our Specialized Plumbing Services in Irvine, CA
At FKM Plumbing, we provide a complete range of plumbing services across Irvine, CA. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Tankless Water Heater Process Works in Irvine, CA
We follow a clear process so your tankless installation is sized right, installed safely and ready to use.
Request a Quote
Call (213) 871-0701 to schedule a site visit. We assess your fixtures, gas supply and venting options, then give you a detailed quote.
Install and Upgrade
We remove your old heater, upsize gas lines if needed and mount the new unit. Venting, water connections and isolation valves are installed to manufacturer specs.
Test and Train
We fire the unit, check gas pressure and test hot water at several fixtures. Then we show you how to flush the system and register your warranty.
Frequently Asked Questions About Tankless Water Heater Installation in Irvine
The cost for tankless water heater installation in Irvine can range from $3,000 to $6,000, depending on the unit type (gas or electric), brand, capacity and complexity of the installation, such as gas line upgrades or new venting. This price usually includes the unit and professional labor. We provide a detailed, no-obligation estimate after an on-site assessment.
Yes, tankless water heaters are very energy efficient in almost any climate. Intense sun breaks down exposed plastic pipe, sprinkler parts, and exterior fittings, so they wear out faster than indoor plumbing. Since they only heat water on demand, they avoid the standby heat loss common with traditional tanks, which can be substantial even in milder seasons.
Sizing a tankless water heater depends on your household's peak hot water demand, measured in gallons per minute (GPM), and the temperature rise needed. Our plumbers will assess the hot water fixtures in your home and review your usage patterns to recommend the appropriate GPM and BTU rating for your needs in Irvine.
Tankless units eliminate standby heat loss, which can lower water heating energy use. Savings vary based on household size and usage patterns.
We install Rinnai, Navien, Noritz and Rheem tankless water heaters. Each brand offers different features, efficiency levels and warranties.
With annual descaling, tankless units often last 15 to 20 years. Skipping maintenance in hard water areas can shorten that significantly.
A standard tankless water heater installation, replacing an existing tank, typically takes 4 to 8 hours. If extensive plumbing or gas line changes are required, it may take a full day. Our team works efficiently to restore your hot water as soon as possible.
Size depends on how many fixtures run at once and your incoming water temperature. Many homes need a unit rated around 7 to 10 gallons per minute.
What People Are Saying About Our Plumbing Experts?

Mark T.
When our office needed drain cleaning, FKM Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Tustin, CA
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Mission Viejo, CA
James P.
Our commercial plumbing system had a leak under the sink, and FKM Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Costa Mesa, CA
Sofia M.
Two new toilets installed in one visit, no mess left behind, and the tech even adjusted a faucet he noticed was dripping. Fair pricing and really friendly.
Toilet Installation · Mission Viejo, CA
Patricia H.
We had a slab leak that two other companies could not find. FKM Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Mission Viejo, CA
Emily R.
I called FKM Plumbing for plumbing repair, and the technician was fast, polite, and thorough. They explained the problem clearly and fixed it the same day. I will definitely hire them again. Highly recommended!
Plumbing Repair · Newport Beach, CA













