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Water Heater Services

Tankless Water Heaters

Tankless water heaters heat water directly without the use of a storage tank, offering endless hot water, a smaller footprint, and improved energy efficiency for households prioritizing convenience and sustainability.
Water Heater Services

Tankless Water Heaters

Tankless water heaters heat water directly without the use of a storage tank, offering endless hot water, a smaller footprint, and improved energy efficiency for households prioritizing convenience and sustainability.

For most service calls we arrive with a water heater unit in our service vehicles ready for installation.

Tankless Water Heaters

What Are Tankless Water Heaters?

Tankless water heaters, also known as on-demand water heaters, provide a modern solution for your home's hot water needs. Unlike traditional tank-style heaters, tankless models heat water directly as it flows through the device, ensuring a limitless supply of hot water without the bulk and inefficiency of a storage tank. This method offers enhanced energy efficiency, a reduced environmental footprint, and significant space savings, making tankless water heaters an ideal choice for new homes and eco-conscious renovations.

Things To Keep In Mind:
  1. Endless Hot Water Supply: Never run out of hot water again, regardless of how many showers, baths, or laundry loads you run through the day. Tankless heaters provide hot water on demand, ensuring continuous availability for all your needs.

  2. Energy and Cost Savings: By heating water only when it's needed, tankless water heaters eliminate the standby energy losses associated with tank storage units. This efficiency can translate into lower monthly utility bills and long-term savings.

  3. Space Efficiency: With their compact size, tankless water heaters free up valuable space in your home. They can be mounted on a wall in areas like basements, closets, or even outdoors, provided there's adequate protection against the elements.

  4. Longevity: Tankless water heaters typically have a longer lifespan compared to traditional tank models, often lasting 20 years or more with proper maintenance. This durability means fewer replacements and better value over time.

  5. Improved Water Quality: Without a tank to store water, the risk of rust and sediment buildup is significantly reduced, ensuring cleaner, fresher water for your household use.

Tankless flushes are recommended to be completed every one to two years to prevent calcium build up within the units. This can prevent the heat exchanger from developing a leak, the most common issue when repairing tankless. The inside of these units are complicated and messy. They combine a motherboard with multiple gas and water lines. These heaters should only be maintained or repaired by your trained professional.

Tankless water heaters can be applied to several different applications, inside or outdoor. We have experience installing in all locations and can have it completed the same day, in most cases. We offer sound advice of how to select tankless water heaters and whether or not you should select a tankless water heater at all. Tankless water heaters can involve new gas sizes/lines and complete replacement of the venting system. We recommend these upgrades be done by a licensed plumbing contractor.

Harris Water Heaters was so efficient. They communicated with us through the whole process. They even came back and adjusted the thermostat.". OMG and I was able to see how close the driver was in transit. Thank you very much Randy.- Aditi S


We take immense pride in our direct relationship with homeowners, ensuring every interaction is marked by personal attention and a genuine concern for the comfort and satisfaction of each household. Our commitment to exceptional customer service is at the heart of what we do, reflecting our core belief that caring for our clients goes beyond repairs and installations—it's about creating lasting relationships built on trust and care.

Brands We Work With

Contact us for water heater repair, replacement, or new installation. We proudly serve residential clients throughout the SF Bay Area.

Areas We Serve


San Francisco
South San Francisco
Oakland
Berkeley
Redwood City
San Leandro
Castro Valley
San Jose
Dublin
San Ramon
Pleasanton
Livermore

New! Sacramento County


We are licensed and insured.

Service Area Map