Los Gatos Tankless Water Heaters
Family Owned & Serving Santa Cruz Since 1984
Los Gatos Tankless Water Heaters
Family Owned & Serving Santa Cruz Since 1984
Flexible Financing Available Through GreenSky
Don’t Let Cost Stop You From Getting It Fixed
Plumbing problems don’t wait — and now, neither do you. We offer flexible payment plans so you can get the work done today without the financial stress.
Tankless Water Heaters in Los Gatos, CA
Do some of your friends or neighbors have tankless water heaters in Los Gatos and you’re wondering if one would be right for you? We would love to help you decide what type of new water heater is right for your home. We promise that we will help you get the hot water you need to restore your comfort and peace of mind. The plumbing team at Rosenthal Plumbing is here to help with all your Los Gatos plumbing needs!
Here to Help You Get Started
Request a FREE Estimate
At Rosenthal Plumbing, we offer free estimates for all your plumbing service needs, ensuring you get the best value and clear pricing before any work begins. Request a free estimate online or call today!
Need a Second Opinion?
We’re Happy to Help
Not sure about a quote you got from another company? Plumbing work can feel overwhelming, especially when the numbers feel ambiguous. We’ll take a look, give you our honest take, and help you figure out what makes sense for your situation.
Our Los Gatos Services
Thinking About Getting A Tankless Water Heater in Los Gatos?
Unsure about a tankless water heater for your home? Here are some benefits to getting one.
- Spend less on electricity. Because a tankless water heater doesn’t store water that it has to keep warm, you will save money on utilities when you have one. Over time, this can offset the higher cost of the tankless water heater’s purchase and installation.
- Get your space back. Most water heaters are huge because they have to store all of the hot water that you might need for your home. Tankless heaters heat water as it is needed, so you won’t have to have such a large appliance taking up space. If you need storage space or you’d like to install something else in your utility area, tankless water heaters in Los Gatos could be the best choice for you.
- Be environmentally friendly. Do you care a lot about the world we live in? Do you want to take care of it for your children and grandchildren? Installing a tankless water heater means you will use less energy, which is always good for the planet. Show how much you care by making your home greener today.
The Right Away Club
Join our membership today and experience priority service, exclusive discounts, and peace of mind.
Your Plumbing Experts
For more than three decades, Rosenthal Plumbing has been the go-to source when property owners need a reliable Santa Cruz plumbing company. We provide a wide range of quality plumbing services in Santa Cruz, CA, from repairs and maintenance to installations and replacements.
About UsHow does a tankless water heater work, and is it worth switching from a traditional tank in my Los Gatos home?
A tankless water heater heats water on demand as it passes through the unit, rather than storing a large volume of pre-heated water in a tank. When you turn on a hot water faucet, cold water flows through a heat exchanger — powered by gas or electricity — and comes out hot within seconds. Because it only heats water when you actually need it, you’re not paying to keep 40–80 gallons sitting at temperature around the clock. For Los Gatos homeowners, the benefits are real. You’ll see lower energy bills over time, you’ll never run out of hot water mid-shower, and you’ll free up significant space in your utility area since tankless units are compact and typically wall-mounted. The tradeoff is a higher upfront cost for the unit and installation — especially if your home needs gas line or venting modifications to accommodate the switch. That said, tankless water heaters can last 20 years or more (roughly double the lifespan of a traditional tank), so the long-term value often makes up for the initial investment. At Rosenthal Plumbing, we install both tank and tankless systems, and we’ll walk you through the pros and cons based on your home’s layout, your family’s hot water habits, and your budget. We’ll never push you toward one option over the other — we just want you to feel confident in your decision.
Can my Los Gatos home support a tankless water heater, or does it need upgrades first?
This is one of the most important questions to answer before making the switch, and it’s something we evaluate during every tankless water heater consultation. Not every home is plug-and-play ready for a tankless unit. Gas-powered tankless water heaters — which are the most common for whole-home use — require a sufficient gas supply line and proper venting to the outside. If your Los Gatos home currently has a traditional tank water heater, the existing gas line may be undersized for a tankless unit’s higher BTU demand. You may also need upgraded venting, since tankless models typically use stainless steel venting that differs from what a standard tank uses. Electrical tankless units avoid the gas and venting requirements, but they draw significant amperage and may require a panel upgrade. The good news is that these modifications are all very manageable for an experienced plumber, and many Los Gatos homeowners find the upgrades well worth it for the long-term energy savings, endless hot water, and extended equipment lifespan. When you call Rosenthal Plumbing, we’ll come out to your home, assess your current setup, and give you a clear picture of what’s needed — along with a free estimate that covers everything, so there are no surprises. We also offer financing options to help make the project more affordable.
How much maintenance does a tankless water heater need in Los Gatos?
Tankless water heaters are relatively low maintenance compared to traditional tanks, but they’re not completely maintenance-free — especially in areas like Los Gatos and the greater Santa Cruz region where water can contain higher levels of minerals. Over time, calcium and mineral deposits can build up inside the heat exchanger, which reduces efficiency and can eventually cause the unit to malfunction or shut down. That’s why we recommend flushing your tankless water heater with a descaling solution at least once a year. This process clears out mineral buildup, keeps the unit running efficiently, and helps protect your investment for the long haul. In addition to flushing, it’s good practice to have a plumber check the inlet filter, inspect the venting, and make sure all connections are secure during an annual service visit. At Rosenthal Plumbing, we handle all of this — and if you join our Right Away Club membership, you’ll get priority scheduling and exclusive discounts on maintenance, which makes it easy to stay on top of your tankless water heater’s upkeep without having to think about it.
Reviews From Your Community
Mario did a great job. He listened to our concerns carefully and kindly, reviewed options, took our needs into consideration, and explained things well. He was thorough and efficient and left things as clean as he'd found them.
Thanks for responding so quickly & for sending such an excellent plumber. The work was thoroughly explained & quickly completed. I will use Rosenthal plumbing for all my plumbing needs.
I woke up to find my downstairs ceiling dripping water. The leak was coming from my upstairs bathroom. I went into full panic mode. I called Rosenthal Plumbing and explained what was going on. Due to the urgency of my situation, the dispatcher Selina, contacted Mr Raffael
Just had Alex fix our sink drainage problem. He did an excellent job explaining and solving the issue. highly recommend
When you wake up in the morning with no hot water. You might think it is going to be a bad day. However here in Santa Cruz, we have miracle workers in the form of the awesome technicians at Rosenthal Plumbing. Our water heater, drains, and lines were so old they were amazed it
Tech did a great job. Job was done within 2-3 hours. Very professional
They provided excellent, quality service for my family. A free estimate was provided after a thorough evaluation and explanation of the work needed with various price options. More transparency in itemized cost should have been offered but otherwise, the experience and knowledge
Alexander came promptly to address a leak in the water supply filter system. He thoroughly assessed the situation and checked on the bathroom and kitchen plumbing. He was quick and professional and did a great job fixing the leak and installing a new, upgraded water filtration
Alexander was fantastic. Discovered damage we didn’t know about and fixed everything in a single afternoon. Would have been structural floor damage in our very near future if he hadn’t carefully checked everything. Provided 3 different detailed solutions/costs for the full job.
Josh was very helpful and efficient in clearing the drain lines from my house to the main sewer line. He diagnosed the problem and ran a camera to give me the bad news of roots and collapsing old pipes. I have complete confidence in his work and he was a pleasure to meet and
Mario, was Fabulous! He explained everything to me with all my options. I Will definitely call again and ask for Marie. He was very professional along with being very courteous. Thank you for coming out so quickly, that was much appreciated.
Called in the morning and had an expert coming to my place a few hrs later. The technician, Joshua Obert, was knowledgeable, friendly and very professional . He did not rest until he found and fixed the problem. I could not be happier with his work. Highly recommended!
Anthony is an excellent job explaining every bit of work that needed to be done. I was impressed with the work that was done along with the fact they were able to get it done with same day notice! Highly recommend and will definitely be back in the future!
I just moved here into an older mobile home that needed major repairs, Ian and Travis replaced my water piping and water heater and some other plumbing issues. They are rock stars and did an awesome job! I highly recommend Rosenthal Plumbing, they also offer financing for the
Josh from Rosenthal Plumbing was super pleasant to deal with and did an outstanding job servicing my tankless water heater. He also gave me recommendations for future care to help my equipment last longer. It was easy to schedule my appointment with Rosenthal too. I'm glad that
I am writing to express my sincere appreciation for the exceptional service provided by Brandon during his recent visit to our facility. It was a pleasure to have Rosenthal Plumbing on-site again. Brandon’s work is distinguished not only by its high quality but also by the
I am writing to express my sincere appreciation for the exceptional service provided by Brandon during his recent visit to our facility. It was a pleasure to have Rosenthal Plumbing on-site again. Brandon’s work is distinguished not only by its high quality but also by the
Josh called before coming and then arrived on time. I’m usually a bit uptight when workmen are at my home but It was really nice to have him around. He explained everything in detail and gave me several options to choose from. All of them were practical and worthy of
I'm a 75 year old retired general contractor that couldn't be any happier with the experience. From starting the service experience online, the follow thru from the office, to the work performed by Josh, the technician. Keep up the good work
Prompt, professional communication to set up the appointment with an introduction to my assigned technician, Mario, via his Bio before he arrived, complete with a photo. Mario was amazing in helping fix our plumbing issue. He walked me through the different options and helped me
The contractors renovating our house installed our new household water softener, but it wasn't working and they couldn't figure it out. Anthony, from Rosenthal Plumbing, came and was very detailed and methodical in his diagnostic approach, which I really appreciated. Within 15
Everyone was friendly and professional. The dispatcher was accurate in the timing of appointment and Josh took care of our problem. He was very thorough and even took the time to other areas of our homes plumbing. He explained everything he was doing and was happy to answer any
Josh came out this morning, checked out the issues and also found few other items that needed attention. On site, prepped 5 to 6 quotations, with varying available services within 20 min. Very funny, knowledgeable, and detail oriented person. I would recommend Rosenthal Plumbing
My service was great. We had Josh and he was awesome! He communicated every step of the way and was very easy to work with and talk with. I would definitely have Josh come back anytime I need Something done !
Mario did a great job. He listened to our concerns carefully and kindly, reviewed options, took our needs into consideration, and explained things well. He was thorough and efficient and left things as clean as he'd found them.
Thanks for responding so quickly & for sending such an excellent plumber. The work was thoroughly explained & quickly completed. I will use Rosenthal plumbing for all my plumbing needs.
I woke up to find my downstairs ceiling dripping water. The leak was coming from my upstairs bathroom. I went into full panic mode. I called Rosenthal Plumbing and explained what was going on. Due to the urgency of my situation, the dispatcher Selina, contacted Mr Raffael
Just had Alex fix our sink drainage problem. He did an excellent job explaining and solving the issue. highly recommend
When you wake up in the morning with no hot water. You might think it is going to be a bad day. However here in Santa Cruz, we have miracle workers in the form of the awesome technicians at Rosenthal Plumbing. Our water heater, drains, and lines were so old they were amazed it
Tech did a great job. Job was done within 2-3 hours. Very professional
They provided excellent, quality service for my family. A free estimate was provided after a thorough evaluation and explanation of the work needed with various price options. More transparency in itemized cost should have been offered but otherwise, the experience and knowledge
Alexander came promptly to address a leak in the water supply filter system. He thoroughly assessed the situation and checked on the bathroom and kitchen plumbing. He was quick and professional and did a great job fixing the leak and installing a new, upgraded water filtration
Alexander was fantastic. Discovered damage we didn’t know about and fixed everything in a single afternoon. Would have been structural floor damage in our very near future if he hadn’t carefully checked everything. Provided 3 different detailed solutions/costs for the full job.
Josh was very helpful and efficient in clearing the drain lines from my house to the main sewer line. He diagnosed the problem and ran a camera to give me the bad news of roots and collapsing old pipes. I have complete confidence in his work and he was a pleasure to meet and
Mario, was Fabulous! He explained everything to me with all my options. I Will definitely call again and ask for Marie. He was very professional along with being very courteous. Thank you for coming out so quickly, that was much appreciated.
Called in the morning and had an expert coming to my place a few hrs later. The technician, Joshua Obert, was knowledgeable, friendly and very professional . He did not rest until he found and fixed the problem. I could not be happier with his work. Highly recommended!
Anthony is an excellent job explaining every bit of work that needed to be done. I was impressed with the work that was done along with the fact they were able to get it done with same day notice! Highly recommend and will definitely be back in the future!
I just moved here into an older mobile home that needed major repairs, Ian and Travis replaced my water piping and water heater and some other plumbing issues. They are rock stars and did an awesome job! I highly recommend Rosenthal Plumbing, they also offer financing for the
Josh from Rosenthal Plumbing was super pleasant to deal with and did an outstanding job servicing my tankless water heater. He also gave me recommendations for future care to help my equipment last longer. It was easy to schedule my appointment with Rosenthal too. I'm glad that
I am writing to express my sincere appreciation for the exceptional service provided by Brandon during his recent visit to our facility. It was a pleasure to have Rosenthal Plumbing on-site again. Brandon’s work is distinguished not only by its high quality but also by the
I am writing to express my sincere appreciation for the exceptional service provided by Brandon during his recent visit to our facility. It was a pleasure to have Rosenthal Plumbing on-site again. Brandon’s work is distinguished not only by its high quality but also by the
Josh called before coming and then arrived on time. I’m usually a bit uptight when workmen are at my home but It was really nice to have him around. He explained everything in detail and gave me several options to choose from. All of them were practical and worthy of
I'm a 75 year old retired general contractor that couldn't be any happier with the experience. From starting the service experience online, the follow thru from the office, to the work performed by Josh, the technician. Keep up the good work
Prompt, professional communication to set up the appointment with an introduction to my assigned technician, Mario, via his Bio before he arrived, complete with a photo. Mario was amazing in helping fix our plumbing issue. He walked me through the different options and helped me
The contractors renovating our house installed our new household water softener, but it wasn't working and they couldn't figure it out. Anthony, from Rosenthal Plumbing, came and was very detailed and methodical in his diagnostic approach, which I really appreciated. Within 15
Everyone was friendly and professional. The dispatcher was accurate in the timing of appointment and Josh took care of our problem. He was very thorough and even took the time to other areas of our homes plumbing. He explained everything he was doing and was happy to answer any
Josh came out this morning, checked out the issues and also found few other items that needed attention. On site, prepped 5 to 6 quotations, with varying available services within 20 min. Very funny, knowledgeable, and detail oriented person. I would recommend Rosenthal Plumbing
My service was great. We had Josh and he was awesome! He communicated every step of the way and was very easy to work with and talk with. I would definitely have Josh come back anytime I need Something done !
Ready for amazing plumbing service in the Santa Cruz area?
Call Rosenthal for Tankless Water Heater Services in Los Gatos Today!
If you want more information on tankless water heaters in Los Gatos, call us at Rosenthal today. We will get an expert out to you to get you all of the information you need to make the best choice for you and your family. We may be a Santa Cruz plumbing company, but we bring all of our knowledge and experience to our Los Gatos customers on every call, so ask us anything about tankless water heaters today!
Get Your Free Estimate
2023 Neighborhood Fave.png)
4.9 Stars | 500+ Reviews