CARMEL TANKLESS
WATER HEATER
SPECIALISTS
From first-time tankless conversions to error codes on an older unit, we handle tankless water heaters across Carmel. Navien, Rinnai, Rheem and Noritz installed and serviced, with an upfront price before any work begins.
• Endless hot water on demand
• Same-day service available
• Yearly descaling for hard water
• 15-year manufacturer’s limited warranty on new units
BEFORE & AFTER
FROM TANK TO TANKLESS
Real photos from a tank-to-tankless conversion we completed in Westfield, Indiana. We removed a 50-gallon power vent water heater and installed a wall-mounted Navien NPE-240A2 tankless water heater, freeing up floor space.
BEFORE
50-gallon power vent water heater
AFTER
New Navien NPE-240A2
TANKLESS WATER HEATER SERVICES
WE INSTALL. WE SERVICE. WE GUARANTEE.
From installation to maintenance and repairs, we handle all your tankless water heater needs with honest pricing, expert workmanship, and the best brands in the industry.
Professional installation of tankless water heaters for maximum performance and efficiency.
Professional replacement of tankless water heaters for maximum performance and efficiency.
Fast diagnostics and expert repairs to keep your tankless water heater running like new.
Extend the life of your unit and maintain peak performance with professional tankless flushing and cleaning.
Tankless water heater installation in Carmel
A tankless conversion in Carmel starts with a site check. We confirm your gas meter and line can supply a unit that can burn several times the gas of a typical tank, plan PVC venting and a condensate drain for high-efficiency models, and make sure there’s power where the unit will hang. Thinking about the garage? Read can a tankless water heater be installed in a garage?
The standard tankless installed price is $4,499. Gas, venting or electrical work beyond the standard scope is quoted and approved first. See all installed prices.
Is tankless worth it in Carmel?
Carmel Utilities softens its water, which is easier on a tankless heat exchanger than very hard water. Tankless makes the most sense if you run out of hot water, want the floor space, or plan to stay long enough to benefit from the longer life. New units we install carry a 15-year manufacturer’s limited warranty.
Prefer the lower upfront cost of a tank? Compare Carmel water heater replacement.
Carmel’s softened water and your tankless unit
Carmel Utilities pumps groundwater from 20 wells and softens it to about eight grains of hardness, which it describes as moderately hard. Its report notes that softening may be reduced during periods of extremely high summer use.
Moderately hard water still leaves scale in a tankless heat exchanger over time, just more slowly. Most manufacturers recommend periodic descaling, and our Tankless Carefree Plan includes a yearly descale for $99 a year. ScaleShot is our citric-acid descaler if you do it yourself.
Source: 2025 Carmel Water Quality Report (Carmel Utilities). Served by a different utility? Check its annual report.
Tankless water heater repair in Carmel
Error code? Write it down and take a photo of the rating label so we bring the right parts.
Navien unit? See Navien tankless repair in Carmel.
Rinnai unit? Start with our Rinnai troubleshooting guides.
Tank heater? See Carmel water heater repair.
Carmel Tankless Water Heater FAQs
Are tankless water heaters worth it for Carmel homes?
For many Carmel homeowners, yes. Tankless water heaters provide endless hot water on demand, improved energy efficiency, a compact space-saving design, and a longer lifespan than traditional tank water heaters. Carmel’s softened water is easier on the heat exchanger, though periodic descaling is still recommended. Read more: Are tankless water heaters worth it in Indiana?
Do you install tankless water heaters in Carmel?
Yes. Hot Water Pros provides professional tankless water heater installation, replacement, repair, and maintenance throughout Carmel, Hamilton County, and surrounding communities. We install and service Navien, Rinnai, Rheem, Noritz, and more.
How long do tankless water heaters last?
Tankless systems can often last 15–20 years with proper maintenance and annual servicing. Tankless water heaters we install come with a 15-year manufacturer’s limited warranty.
How often should a tankless water heater be flushed?
Most tankless systems should be professionally flushed once per year to prevent mineral buildup and maintain performance. Our annual tankless service includes descaling and rinsing the heat exchanger, cleaning the inlet filter, and checking operation.
Do you offer a tankless maintenance plan in Carmel?
Yes. Our Tankless Carefree Plan is $99 a year and includes your annual tankless service, yearly reminders, priority scheduling, a digital service report, and 10% off qualifying tankless repairs, up to $100 per repair visit.
How do I schedule tankless water heater service in Carmel?
Call or text 317-922-9043 or book online. Same-day service is available, and we give you upfront pricing before any work begins.
IN THE CARMEL COMMUNITY
Rain on Main Barrel Sponsor
Hot Water Pros is proud to sponsor a Rain on Main barrel in Carmel. Rain on Main brings local artists and businesses together to support water quality education, with custom-painted rain barrels displayed along Main Street and auctioned for the community.
Supporting water quality education in Carmel
Sponsoring a custom-painted rain barrel
Helping local artists showcase their work
Proud to support the Carmel Arts & Design District
Local plumbing company supporting clean water awareness
Proud Sponsor of CarmelFest
Hot Water Pros was proud to be part of CarmelFest 2026 and support one of Carmel’s biggest community traditions. We had a great time joining the parade, meeting local families, and celebrating with the homeowners and businesses we’re grateful to serve every day.
Proud CarmelFest 2026 sponsor
Joining the CarmelFest parade
Meeting local Carmel families
Celebrating one of Carmel’s biggest traditions
Proud Carmel Swim Club Sponsor
Hot Water Pros is proud to support Carmel Swim Club and its mission to help Central Indiana athletes grow through swimming, discipline, teamwork, and leadership. As a local company serving Carmel families, we’re honored to support a program that has become one of the most respected swim clubs in Indiana and the nation.
Supporting Carmel youth athletes
Helping local swimmers grow through discipline and teamwork
Proud to support a nonprofit serving 500+ athletes
Connected with Carmel families and the local community
Local plumbing company supporting youth sports
Supporting Youth Abuse & Suicide Prevention
Hot Water Pros is proud to sponsor the Indiana Center for the Prevention of Youth Abuse & Suicide (ICPYAS), a Carmel-based nonprofit that has worked to prevent youth abuse and save lives since 2001. Its education programs help young people, parents and other adults recognize the signs of abuse or suicide risk, respond, and find help.
Supporting a Carmel-based prevention nonprofit
Helping bring prevention education to kids and families
Proud to support the community we serve
Need help now?
Call or text 988 to reach the 988 Suicide & Crisis Lifeline, 24/7.
Suspect child abuse or neglect? Call the Indiana hotline at 1-800-800-5556, 24/7.
In immediate danger? Call 911.
SERVICE AREAS
Proudly Serving Indianapolis and Surrounding Areas
CUSTOMER REVIEWS
What Our Customers Say
“They are extremely professional experts who show up same / next day and provide top quality services.”
Jen W.
“Hot Water Pros did exceptional work for me; they will be my go-to for all future plumbing needs.”
Andrew S.
“They came out and replaced my hot water heater today, the same day that I called them to see if they could help me!”
Laura B.