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- If we can’t fix it, you don’t pay
Signs You Need Tankless Water Heater Repair
Even the most efficient tankless system can run into trouble over time. Knowing when to call for tankless hot water heater repair can save you money, avoid major breakdowns, and bring back your comfort. Spotting early warning signs is the key to staying ahead of expensive repairs.
If you notice these common signs, give us a call at Comfort Craftsman:
No Hot Water. If your water stays cold no matter how high you turn the tap, your heater’s core components may be failing or clogged with scale.
Error Codes on Display. Blinking lights or code messages often point to issues with ignition, sensors, or venting.
Fluctuating Water Temperature. Inconsistent hot and cold water can be caused by a faulty flow sensor or internal buildup.
Water Pressure Drops. Clogs or mineral deposits inside the unit can lower pressure and throw off heating performance.
Strange Noises. Clicking or popping sounds could indicate scaling, combustion issues, or mechanical wear.
These symptoms can point to problems with flow sensors, igniters, heat exchangers, control boards, or sediment buildup. We’ve seen them all.



Our Repair Process Is Simple and Honest
At Comfort Craftsman, our tankless water heater repair services are built around quality, honesty, and a smooth experience from start to finish. We take the time to understand your problem, explain what’s going on, and offer real solutions without the pressure or upsells. From your first call to the final cleanup, you can count on us to treat your home with care, respect, and expert attention to detail.
When you call Comfort Craftsman, here’s how it goes
We schedule a time that works for you (no 6-hour windows)
Bobby or a trained technician arrives on time
We inspect the unit, explain the issue, and walk you through the fix
You get a clear price before we begin
We make the repair with quality parts and clean up afterward

Emergency Tankless Repairs Available
Tankless water heater breakdowns can happen at the most inconvenient times, and we understand how critical it is to get your system up and running quickly. Whether you’re facing freezing cold water or a major leak, we offer emergency repairs to resolve issues fast.
Our emergency tankless water heater repair services cover:
No hot water during winter: Ensure your home stays warm with reliable hot water, even in the coldest months.
Sudden leaks or water shut-off: We quickly address leaks to prevent further damage and restore water flow.
Constant error codes: We’ll diagnose and fix error codes that cause system shutdowns, so you aren’t left without hot water.
Family or guests visiting soon: If you need reliable hot water for your family or guests, we’ll make sure your system is ready.
Call us anytime, and we’ll do our best to get your tankless water heater back in action the same day.

Tankless Repairs vs. Replacement — We’ll Be Honest
Some units can be repaired and run strong for another 5–10 years. Others are so aged or damaged that replacing them makes more sense.
We’ll give you our honest opinion based on:
Age of the unit
Frequency of repairs
Cost of parts
Energy efficiency
Water needs in your home
If replacement is the better call, we’ll explain why — and help you choose a model that fits your home and budget.

Latest From Our Blog

If you want a company that strives on quality and perfection, this is your guy! We are so happy with our installation, we had both the furnace and air conditioner replaced. They listened to what we were wanting out of the new unit and so far they nailed it. Our installer was very particular and made sure that we were happy in the end. I’m telling you this is your go to company for heating and cooling!
Debra Elwell
Eboe Hutchful
Heather
Great communication, on-time, great work and very nice
Brandon Welling

Tankless Water Heater Repair FAQs
Do you carry parts on your truck?
Yes — we stock many common parts like igniters, sensors, and control boards. If we don’t have it, we’ll source it fast.
How long does a repair usually take?
Most repairs take 60–90 minutes. If parts are needed, we’ll schedule a return visit quickly.
Can you fix tankless systems still under warranty?
Yes. We’ll check your serial number and help you get any eligible parts covered by the manufacturer.
Areas We Proudly Serve

Schedule Your Tankless Water Heater Repair Today
At Comfort Craftsman, you’re choosing a team with proven skill and a commitment to honest, reliable service. We offer clear answers, quality workmanship, and the kind of personal care you’d expect from a trusted neighbor, not a big-box company.
Get back to hot showers and clean dishes. We’re here to help.
Call Comfort Craftsman at (248) 778-8025
Or request your no-pressure furnace estimate below.