Tankless Water Heaters in Phoenix and Scottsdale, AZ
Tankless Water Heaters
Thinking about making the switch to a more efficient water heating system? At Allegiance Water Services, we specialize in installing and servicing tankless water heaters for homeowners in Phoenix and Scottsdale. These on-demand systems are quickly becoming the go-to choice for families who want reliable, energy-saving hot water without the bulky tank. Whether you’re upgrading your current setup or building a new home, we’re here to help you find the right residential tankless water heater—and make the whole process easy from start to finish.
What Is a Tankless Water Heater?
A tankless water heater gives you hot water only when you need it. Since this isn’t a traditional water heater, there’s no waiting for a tank to refill. No wasted energy keeping water hot 24/7. It heats water on demand as it flows through your pipes, delivering hot water instantly and continuously.
If you’ve ever had to schedule showers or run out of hot water during laundry, this fixes that.
And in places like Phoenix and Scottsdale, where utility costs are high and space is limited, tankless hot water heaters just make more sense.
Why Homeowners Are Switching to Tankless
There are so many benefits to switching to a tankless water heater. Here are some of the best ones:
- You’ll Save Money – Tankless water heaters are more energy-efficient than traditional tanks. That means lower energy bills every month—and over time, those savings really add up.
- You’ll Free Up Space – Forget the bulky tank taking up room in your garage or utility closet. Tankless units are small, wall-mounted, and sleek, leaving you more space for storage or simply decluttering.
- You’ll Never Run Out of Hot Water – Have guests over? Two showers going at once? No problem. Residential tankless water heaters give you an endless supply of hot water, no matter how busy life gets.
Which Type Is Right for You?
There are two main types of tankless water heaters to consider:
- Tankless Gas Water Heaters – Great for larger households or high-demand use. They heat water fast and keep up with multiple appliances running at the same time.
- Tankless Electric Water Heaters – Compact, efficient, and perfect for smaller homes or if you don’t have access to natural gas.
Not sure which is best for your setup? We’ll help you compare residential tankless gas water heaters and tankless hot water heaters, electric, based on your water usage, layout, and budget.
What to Expect from Professional Installation
Installing a tankless system isn’t something you want to DIY. It involves gas or electrical hookups, plumbing reroutes, and safety checks. At Allegiance Water Services, we handle every detail:
- We assess your home and recommend the right size and model.
- We remove your old water heater (if needed).
- We handle all tankless water heater installation with care and expertise.
- We walk you through how to use and care for your new system.
It’s fast, efficient, and done right the first time.
Keep It Running: Tankless Water Heater Maintenance & Repair
Like any home system, routine maintenance keeps your tankless unit running at peak efficiency for years to come. Easy tankless water heater maintenance tips:
- Flush the system once a year to prevent mineral buildup
- Keep air vents clear
- Check for error codes or drops in water pressure
Ignoring maintenance can lead to avoidable breakdowns, and no one wants a cold shower during winter. For long-term reliability, let us handle your tankless water heater maintenance with annual tune-ups and inspections.
When Something Goes Wrong
Our team is ready to troubleshoot and fix common issues like:
- Sediment or scale buildup
- Ignition or flame sensor errors
- Inconsistent water temperature
- Low flow or water pressure
If you notice anything unusual, don’t wait—call us for fast and honest tankless water heaters repair.
Choosing the Right Company Matters
You’re not just buying a water heater—you’re trusting someone to install it safely and stand by the work. So here’s why homeowners choose Allegiance Water Services over the big-box guys:
- Licensed, bonded, and insured
- We know Phoenix and Scottsdale plumbing inside and out
- We install both tankless gas and electric systems
- We offer honest pricing, reliable service, and fast scheduling
- We’re committed to sustainability and water conservation
- Our customers trust us, and we treat your home like our own
If you’ve been Googling “plumbers tankless water heaters near me,” you’ve found your people.
Let’s Make Your Home More Efficient—Starting Today
You don’t have to live with inconsistent hot water, high energy bills, or an outdated system. Whether you’re ready to install or just exploring your options, we’re here to help.
Call Allegiance Water Services today or contact us online to schedule your tankless water heater consultation.
Check Out Our Customer Reviews
Overall Rating
Johnny Gonzales was very professional, courteous, and thorough.
Excellent service. Rommel was very professional. I will call on them again. Marc C.
Josh and the office and service tech Rommel were excellent in every way! Professional, knowledgable service of issues with my water softener.
Technician patiently walked me through my current setup, identified multiple leaks, and looked to save money by combining and eliminating unneccesay zones.
Arrived on time , perfectly described a job he'd be doing and provided excellent service , would recommend him to all of my neighbors, did a great job fixing my water heater leak
Annual service on RO water system. Rommel was friendly, fast and professional.
David was terrific to work with to get my endless questions answered and align on the right water softener system. Lawson, who installed the water softener was outstanding. He explained service and care issues and did a very professional install. The whole team takes their customers satisfaction seriously. I'll be back for future plumbing needs!
Allegiance Water Services sent a repair man to fix a broken sprinkler head.. He was courteous, pleasant and well informed. He fixed the head and checked to be sure the whole system was working again correctly. I appreciated his service. Thank you
Lawson Key was very professional, respectful and kind. He did a great and solid job of installing a new faucet for our water filtration system!
They answered the phone (after several other business didnt) and came right out to do the estimate and complete the work. Quality is good. Will call next time I need sprinkler/landscaping work.
I was in a panic when my sprinklers started making loud noises at 5:30am. I called Allegiance water and was able to get a service rep out the next day. They...
Lawson installed a reverse osmosis system at our new home today. While he was here, he also helped answer (many!) other questions and helped inspect the home’s irrigation system for me. He was thorough, professional, friendly, and patient. Thanks so much Lawson and Allegiance!
He installed a water softener system and did a great job. He also updated our r/o system. Very professional
Excellent job! Will use them again.
Lawson with Allegiance Water has done work for us the last few times and he’s very polite and professional and has done great work for us!
I had Eloy come by to repair a water softener system that had failed, as well as replace the filter in the RO system. He was courteous, knowledgeable, responsive, timely, and really knew his stuff.
These Guys are awesome! They were on time and on the mark. Service was professional and they did a clean repair. I would definitely recommend them.
John was on time and professional. He fixed the leak in my backyard system and tested it to make sure no further leaks. He also checked the front yard and found an additional leak that I hadn’t noticed and also fixed it in the same trip. Super happy with the great service and will definitely call these guys again for future plumbing repairs outdoors and indoor.
John was very knowledgeable and pleasant to work with. Unfortunately, he didnt have the parts i needed so he will be returning in a couple of days to do the actual work. I will update after the work is completed.
Friendly, knowledgeable and efficient.
Extremely impressed and satisfied with professionalism and service. A real person always available by phone unlike several competitors I tried to reach. Eloy the tech was the best in all respects.
I have used Allegiance Water since 2018. The company and service is outstanding. John Gonzales was our repair person for this call. He changed our RO water filters, installed a leak detector for the RO, and repaired our water shut off valve. He was GREAT!!! He is very knowledgeable and dependable. I highly recommend Allegiance and their team. Thanks
Allegiance has been great. Eloy was perfect. I recommend this company highly and will certainly continue to use them in the future.
Excellent communication. Reliable.
Technician was here within 30 minutes. Did a great job for a fair price. I highly recommend Allegiance…..
Eloy is just awesome, friendly, detailed, professional and took time to walk me through all work completed, highly recommend.
I had an exceptional experience with Allegiance today. My old gas water heater needs to be replaced. I called Allegiance yesterday and discussed with David who is very knowledgeable, transparent and told me pros and cons among the different water heaters. I decided to go with 50 gallon Bradford White water heater. Ruben came in next day and clearly explained to me what is the process. He is excellent, very skillful and told me how to maintain it. He cleaned everything afterwards. I am very happy with their services and will call Allegiance for my plumbing issues for sure. Ruben from Allegiance Water Services did an excellent job again today. I had water hammer issue for a couple of months and my pipes coming out the main pipe weren't connected right by a previous plumber. The irrigation system controller needs to be replaced as well And it is now upgraded to an enabling phone control unit. Ruben did an excellent job on replacing the unit and repiping everything. It only took him an hour and they work great! Ruben is very experienced, knowledgeable and efficient. It wouldn't go wrong for Ruben to do your plumbing jobs.
Paul came today to check my Rain Bird system controller. I have worked with him during my new irrigation installation project at the beginning of this year. I was extremely pleased with the outcome then and again today. I specifically requested him for today’s job. As always, he offered excellent, professional service, knowledgeable, courteous and friendly. I would refer him and Allegiance Water Service to my friends with high remarks.
They have done several projects for us and they were done efficiently and well. I highly recommend them for any water service
Allegiance’s technician Eloy Garcia arrived promptly, explained and showed me the issue with my water softener and also he noted some water in tray beneath the water heater that I had even noticed. He fixed the motor on softener and then removed and replaced my water heater as he noted it was still under manufacturer’s warranty! I am so please with his prompt, thorough and efficient service. I highly recommend him and Allegiance Eater Services!
Allegiance Water Services was great! They prioritized my urgent request and Lawson was great when he came to diagnose the issue. He thoroughly explained the problem and gave me different options and advice on future work. 5 star support!
Paul is all of the above plus irrigation systems technologically advanced.
Allegiance is fantastic. Lawson in particular is a total professional. Super knowledgeable, trustworthy, and efficient. Diagnosed our crazy irrigation issues and came up with a cost effective solution.
Highly recommend for Navien install and servicing.
Installed water softener
I am so grateful to Lawson for helping me with my spinkler system. He is knowledgeable, kind, and patiently answers all my questions. I trust him and Allegiance Water Service for all of my home’s plumbing needs.
Valley Wide Service
