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
Josh and the office and service tech Rommel were excellent in every way! Professional, knowledgable service of issues with my water softener.
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
What a great job by everyone involved in this process!! A new drip system was installed in both the front and back yards - first time a system was installed by real professionals. System works great and is easy to use!! Highly recommend Allegiance!!!
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!
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.
Fast and reasonable.
I had made an appointment for Thursday, but was pleasantly surprised to receive a call on Wednesday that Eloy could come out a day early. They serviced my RO water system and soft water system. They exhibited excellent attention to detail and worked in a professional manner. When finished they cleared explained what we needed to to do move for the coming year. I will certainly use them again for annual inspections and servicing.
Will make sure the job gets done!
Annual service on RO water system. Rommel was friendly, fast and professional.
Allegiance has been great. Eloy was perfect. I recommend this company highly and will certainly continue to use them in the future.
Paul is all of the above plus irrigation systems technologically advanced.
Fast, reliable. Polite repair people. Fair price.
Very smooth transaction! One phone call got the osmosis and softner system scheduled and an experienced technician came and installed both within 2 hours! Great experience. Thank you!
Great company. We would highly recommend them. Courteous, professional, fast response time. Very reasonable rates. This is the third time we have used their services and have been very happy every time.
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...
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 and Eloy are my "go to" plumbers. Prompt, efficient, cost effective and courteous.
I’ve used this company for multiple services! And they are great at everything they do. They are super responsive to all of my needs and are always on time. I will never use any other company!
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!
Had a hot water heater replaced today; Lawson did a fantastic job. The workmanship is very professional. Lawson was on time and did exactly what he said he was going to do.
We had a leak in our drip system. Johnny was awesome. He took the time and explained what the problem was and how to get it fixed. He didn't have the part...
Eloy is just awesome, friendly, detailed, professional and took time to walk me through all work completed, highly recommend.
Technician patiently walked me through my current setup, identified multiple leaks, and looked to save money by combining and eliminating unneccesay zones.
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!
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.
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.
Ruben and Juan were the best! Great attention to details, all zones were color coded, and helped us with the use of the Rain Bird app. We couldn’t be happier with the great work!
Would highly recommend. Lawson was very professional.
These guys replaced my Water Heater today. Prompt, fair price, easy to work with. 5 Stars is not sufficient to rate their quality
I have used Allegiance for years now and every time I'm still amazed at how courteous and professional they are. Every year I have my R.O. filter changed and my soft water big blue filter changed. They also perform my mist services for the backyard with shutdown for the winter and startup in the spring. 100% recommend them!
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.
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
Valley Wide Service
