Tankless Water Heater Repair
Tankless Water Heater Repair in Northeast Ohio
Fast, expert repair for all tankless water heater brands — serving Cleveland, Akron, and surrounding areas 24/7.
What We Do
We Fix Tankless Water Heater Problems Fast
If your tankless unit is underperforming or not working at all, we can help. Our experienced technicians diagnose and repair all major brands so you can get back to enjoying hot water without delays.
Repairs for All Brands
We work on Navien, Rinnai, Noritz, Bosch, and other top tankless water heater systems.
Energy-Efficient Restorations
We make sure your system is operating efficiently, helping you save energy and avoid future breakdowns.
Know When It’s Time
If you notice any of these issues, don’t wait — call us to prevent bigger problems.
Fluctuating Hot Water
Water temperature that constantly changes is a key sign of a failing tankless system.
Delayed or No Hot Water
If your tankless heater takes too long or doesn't deliver hot water at all, it's time for a repair.
Flashing Error Codes
Many tankless units display error codes when internal sensors or flow components fail.
How It Works
We follow a clear, professional approach to get your hot water back without the stress.
Book Your Appointment
Schedule online or call — we offer same-day service and 24/7 emergency availability.
On-Site Diagnosis
Our licensed technician inspects the unit, tests for issues, and identifies the problem.
Upfront Estimate
We provide a transparent quote with no surprises before any work begins.
Repair & Testing
We complete the repair, test the unit, and confirm you have consistent hot water again.
What Sets Us Apart
Trusted by Homeowners and Businesses Alike
Homeowners and property managers across Greater Cleveland and Akron trust Black Diamond Plumbing & Drain for reliable, honest plumbing repairs — and tankless water heaters are one of our specialties.
Locally Owned, Never Outsourced
We're a Northeast Ohio team — not a franchise — so every job is done with care and accountability.
Transparent & Fair Pricing
We don't upsell or add surprise charges. You'll know exactly what to expect before we begin.
Hear From Our Happy Customers
Don’t just take our word for it. See what your neighbors have to say about their experience with Black Diamond Plumbing and Drain.
"Responded quickly to my request, arrived on time and were professional. Thorough job of explaining what what was going on with the drain work there were investigating. I would hire them again."
"Tucker and Austin were phenomenal in helping us when our storm drain backed up. They solved the issue quickly, and were so responsive with communication before our appointment and after. So thankful for Black Diamond resolving our problem!"
"I was having basement repairs done when it was discovered that my storm drains were blocked. I called Black Diamond and they were out the same day. Fixed the issue, very professional at a reasonable price"
"Elige & Robert were great and professional. They explained everything and fixed my drainage issues at a fair price. I highly recommend using Black Diamond & requesting Elige & Robert."
"Robert and Eli came out and they both were super friendly and helpful. The scoped the drain pipes and were trustworthy and honest about my situation. I would definitely recommend them and Black Diamond and I plan to call them again if I ever need anything. A+"
Common questions we get from homeowners across Northeast Ohio:
Yes, we service and repair all major brands including Navien, Rinnai, Noritz, and more.
Most repairs can be completed in one visit, depending on the issue and part availability.
If the unit is under 10–12 years old, a repair is usually more cost-effective than replacement.
We'll inspect it and give you an honest recommendation based on performance, age, and repair costs.
Yes, we provide 24/7 emergency plumbing service across Northeast Ohio — including holidays and weekends.
Need Tankless Water Heater Repair?
Call Black Diamond Plumbing & Drain today or book online for fast, expert tankless repair you can count on.
