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Top Tankless Water Heater Service Companies in Fresno, California Ranked
Switching to a tankless water heater is a smart upgrade for many Fresno homes, offering endless hot water and improved energy efficiency. This on-demand system heats water directly as it flows through the unit, eliminating the need for a bulky storage tank. For residents, this means consistent hot water for showers, laundry, and dishes, along with potential savings on energy bills. Finding a qualified local specialist is crucial, as proper installation and maintenance are key to maximizing the benefits of your new system in our unique climate.

Balanced Comfort
4485 N Selland Ave, Fresno, CA 93722
Balanced Comfort is a family-owned business serving Fresno, CA, and the Central Valley with plumbing and HVAC services. They provide sewer camera inspections, water heater repair and installation, tankless water heater maintenance, and drain cleaning. Known for same-day service and a focus on home comfort, Balanced Comfort offers capabilities such as video inspections for drains and tankless water heater descaling. The company emphasizes honest service and customer trust, with a strong local presence.

Clovis Plumbing Services
fresno
Clovis Plumbing Services provides a range of residential plumbing solutions in Fresno, CA, including water heater repair and installation, tankless water heater services, gas line installation, leak detection, and repiping. They specialize in modern plumbing upgrades such as high-efficiency tankless water heaters and comprehensive gas line work, ensuring safety and code compliance. The company emphasizes proper installation techniques, including seismic strapping and pressure relief for water heaters, and offers maintenance advice tailored to local water conditions. Clovis Plumbing Services serves the Fresno area and nearby communities including Clovis and Sanger, focusing on durable repairs and installations that meet California building standards.

Allbritten Heating, Air Conditioning, Plumbing, and Electrical
2842 N Business Park Ave, Fresno, CA 93727
Allbritten Heating, Air Conditioning, Plumbing, and Electrical is a well-established provider serving Fresno, CA. Since 1932, they have offered a wide range of plumbing and HVAC services including water heater repair and installation, drain cleaning, leak detection, and toilet and garbage disposal repairs. Their team includes NATE-certified technicians capable of handling various heating, cooling, and plumbing systems. With over 90 years of experience, Allbritten is known for their expertise in both traditional and tankless water heater systems.

Roto-Rooter Plumbing & Water Cleanup
5493 E Olive Ave, Fresno, CA 93727
Roto-Rooter Plumbing & Water Cleanup has been serving Fresno, CA, and the Central Valley since 1935. They offer a full range of plumbing services including sewer camera inspections, water heater repair and installation, drain cleaning, hydro jetting, and leak detection. Their licensed and insured plumbers handle both residential and commercial plumbing challenges unique to the area, such as stress on water heaters from hot summers and pipe issues from winter freezes. The company provides 24/7 availability for emergency plumbing needs.

Kloger Plumbing
fresno
Kloger Plumbing is a plumbing service provider based in Fresno, CA, offering a wide range of residential and commercial plumbing solutions. Their services include drain cleaning, leak detection, sewer line repair, toilet repair, and water heater installation for both tankless and traditional models. They use advanced techniques such as hydrojetting and camera pipe inspection to diagnose and clear plumbing issues effectively. Kloger Plumbing also provides 24/7 emergency plumbing services to address urgent needs promptly. They serve Fresno and surrounding communities including Clovis, Fowler, Kerman, and others.
Why Consider an On-Demand Water Heater in Fresno?
Fresno's climate and water conditions present specific challenges and opportunities for home water heating. Traditional tank-style heaters constantly work to keep 40-50 gallons of water hot, which can be inefficient, especially during our hot summers. An on-demand or instantaneous water heater provides hot water only when you need it, which can reduce energy consumption. For households with high hot water demand or limited space, a tankless unit mounted on an exterior wall or in a garage can be an ideal solution. The primary benefits include a continuous supply of hot water, a longer average lifespan than tank models, and a smaller physical footprint 1 2.
Understanding Installation Requirements & Costs
Installing a tankless system is more complex than a simple tank replacement. It involves specific electrical, gas, and venting work that must meet Fresno's local building codes and the California Plumbing Code 3 4. The total project cost in Fresno typically ranges from $1,116 to $2,534 for a standard residential installation 5. This wide range accounts for the unit itself, labor, permits, and any necessary upgrades to your home's existing infrastructure.
Key Installation Components
A successful installation hinges on several critical factors:
- Permits & Compliance: A permit is required for all tankless water heater installations in Fresno to ensure the work meets safety and building standards 6. A licensed professional will handle this process.
- Gas Line Requirements: Tankless units require a high BTU input to heat water instantly. This often necessitates upgrading your existing gas line to a larger diameter, typically ¾ inch, to deliver adequate gas volume and pressure 7 8.
- Venting: Proper venting is non-negotiable for safety. Indoor units must be vented to the outdoors using specialized materials like Category III or IV stainless steel or specific CPVC piping that can withstand high temperatures and corrosive condensate 7 9.
- Electrical Needs: While gas-powered, the unit's electronic controls and ignition system require a dedicated 120-volt grounded electrical outlet installed within three feet 8.
- Location & Condensate Management: Units can be installed indoors (like a garage) or outdoors. If placed in a garage, they should be at least 18 inches off the floor for protection. All gas tankless models produce acidic condensate during operation, which must be drained via a neutralization kit or a dedicated condensate drain line 10 7.
Cost Breakdown Example
To understand where your investment goes, consider this approximate breakdown for a typical Fresno installation:
- Tankless Unit: $800 - $950
- Professional Labor (approx. 6 hours): ~$650
- Permits, Materials, & Potential Upgrades (gas line, venting): Variable
Some local providers offer discounts of $100-$300 for upgrading from a traditional tank, and replacement costs for a standard 40-gallon tank can range from $2,495-$2,995, making the upgrade to tankless a competitive option 11.
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The Critical Importance of Maintenance in Fresno
The single most important factor for the longevity of a tankless water heater in Fresno is regular maintenance, specifically descaling. Our area is known for having very hard water, meaning it contains high levels of minerals like calcium and magnesium 12. As water is heated, these minerals solidify and form scale (lime) inside the heat exchanger, the core component of the unit. This buildup reduces efficiency, causes overheating, and can lead to complete system failure 13 14.
Recommended Maintenance Schedule
For Fresno homes, a more aggressive flushing schedule is necessary:
- Annual or Bi-Annual Flushing: It is strongly recommended to flush (descale) the heat exchanger every 6 to 9 months due to our water hardness 12 15. This is more frequent than the 12-month recommendation for areas with softer water.
- Filter Cleaning: The unit's inlet water filter and air intake filter should be checked and cleaned every few months to ensure proper water and airflow 16.
- Professional Service: Many local technicians offer professional descaling services for between $99 and $250, which often includes a full system check 17. This service is a worthwhile investment to protect your larger investment.
Common Tankless Water Heater Repairs
Even with proper maintenance, components can wear out or fail. Being aware of common issues can help you identify problems early.
- Ignition Failure: If the unit won't fire up, it's often related to gas supply issues (incorrect pressure), a faulty gas valve, or a clogged vent preventing proper exhaust 18 19.
- Fluctuating Water Temperature: Experiencing sudden bursts of cold water during a shower (often called "cold water sandwiching") or inconsistent temperatures can point to a failing flow sensor, a clogged filter, or mineral scale interfering with the heat exchanger's operation 13 20.
- Error Codes & Mineral Scale: Modern units display error codes to aid diagnosis. In Fresno, many error codes related to overheating or flow problems can be traced back to mineral scale buildup, underscoring the need for regular flushing 14 20.
- Leaks: Leaks can occur at water line connections, the heat exchanger, or the condensate drain line and require immediate professional attention.
Choosing a Specialist for Your Project
Given the technical requirements for gas, venting, and electrical work, selecting the right professional is paramount. Always choose a licensed, local plumber or HVAC specialist with proven experience installing and servicing tankless systems 21 22. They will be familiar with Fresno's specific code requirements, permit process, and the challenges posed by our hard water. A qualified expert will assess your home's capacity, recommend the correctly sized unit, and ensure a safe, code-compliant installation that delivers reliable performance for years to come 23.
Frequently asked questions
Sources
Footnotes
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The Benefits of Installing a Tankless Water Heater - https://www.robertbrownplumbing.com/blog/2025/september/the-benefits-of-installing-a-tankless-water-heat/ ↩
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Tank Vs Tankless Water Heater - https://fastwaterheater.com/tank-vs-tankless/ ↩
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Tankless Water Heater Requirements - Building in California - https://www.buildingincalifornia.com/wp-content/uploads/2014/01/TanklessWHReq.pdf ↩
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Water Heater Requirements - 2019 California Plumbing Code - https://www.visalia.city/civicax/filebank/blobdload.aspx?BlobID=29277 ↩
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Cost to install a tankless water heater in Fresno, CA - https://www.handoff.ai/construction-costs/install-a-tankless-water-heater/fresno-ca ↩
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Tankless Water Heater Installation Requirements - https://cdnsm5-hosted.civiclive.com/UserFiles/Servers/Server_7964838/File/Government/Departments/Development%20Services/Building/Applications,%20Forms%20&%20Handouts/Handouts/Tankless%20Water%20Heater.pdf ↩
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Tankless Water Heaters: Basic Requirements for a Safe and ... - https://www.youtube.com/watch?v=BYRQjc5nMgI&t=4 ↩ ↩2 ↩3
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Emergency Tankless Install Fresno CA 2025: Fast Relief - https://valleyairrepair.com/blog/emergency-tankless-fresno-installation-guide ↩ ↩2
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Tankless Water Heater Venting 101 - Rheem - https://www.rheem.com/tankless-water-heater-venting-101/ ↩
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2022 Energy Code Water Heating - Single Family - https://www.energy.ca.gov/sites/default/files/2023-09/2022_WH_SFR_ada.pdf ↩
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Fresno Water Heaters: Fresno Water Heater Repair ... - https://fresnowaterheaters.com/ ↩
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Tankless Water Heater Maintenance in 2025: A Complete Guide - https://www.stewartheatingandair.com/blog/tankless-water-heater-maintenance-guide ↩ ↩2
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Tankless Water Heater Repair & Maintenance - - https://fastwaterheater.com/services/tankless-maintenance-repairs/ ↩ ↩2
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Tankless Water Heater Maintenance: A Complete Guide - https://mokherplumbing.com/tankless-water-heater-maintenance-guide/ ↩ ↩2
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How Often to Flush a Tankless Water Heater? Explained Here - https://www.edsheatingandcooling.com/blog/how-often-to-flush-tankless-water-heater/ ↩
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How to Flush a Tankless Water Heater - Santanna Energy Services - https://santannaenergyservices.com/how-to-flush-a-tankless-water-heater/ ↩
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Tankless Water Heater Repair in Fresno, CA - Balanced Comfort - https://balancedcomfort.com/tankless-water-heater-repair/ ↩
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Tankless Water Heater Repair in Fresno, CA - Balanced Comfort - https://balancedcomfort.com/tankless-water-heater-repair/ ↩
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Tankless Water Heaters Sioux Falls SD - https://waterburyheating.com/tankless-water-heaters/ ↩
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Montclair Tankless Water Heater Services by Power Pro - https://www.powerproplumbing.com/water-heaters/tankless-water-heater-services-montclair-ca ↩ ↩2
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Tankless Water Heater Installation in Fresno, CA - https://www.aboveallplumbingpros.com/tankless-water-heaters/ ↩
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Tankless Water Heater Buying Guide: Essential Checklist & Expert Tips - https://tanklesswaterheaters.com/blogs/news/your-essential-checklist-for-buying-a-tankless-water-heater ↩
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What To Know About Tankless Water Heaters: The Complete Guide - https://www.edsheatingandcooling.com/blog/the-complete-guide-to-tankless-water-heaters-benefits-installation-and-maintenance-tips/ ↩