The Tank Itself Is Leaking
Water from a valve or fitting can often be repaired. Water coming through the tank body is different. Once the tank has corroded through, replacing parts around it will not stop the leak.







Serving Washington, DC, Prince George's County, Montgomery County & Northern Virginia, including Upper Marlboro, Hyattsville, District Heights and Silver Spring.
Choosing a new water heater is not only about picking between a tank and tankless model. The gas line, venting, available space and hot-water demand all shape what can be installed properly and what the job will actually involve.
We look at the existing setup before recommending either option. If you are replacing an older unit, our technicians also check what can stay, what needs to change and how that affects the job. You get a clear picture of the equipment, installation scope, and full price before we move forward with anything.

| Stat | What it means for your house |
|---|---|
| 0 anode rods | A tankless unit has none, because there is no stored water to protect. |
| 1 heat exchanger | Where scale forms on a tankless, instead of settling on a tank floor. |
| 3/4 inch | The gas line a tankless commonly needs, against the half inch a tank was given. |
| 1 year | How often a tankless unit needs descaling where the water is hard. |
Not every water heater problem means the tank is finished. Some faults are still worth repairing. Replacement becomes more likely when the problem is tied to the tank itself, repairs keep adding up, or the heater is no longer doing the job reliably.
Water from a valve or fitting can often be repaired. Water coming through the tank body is different. Once the tank has corroded through, replacing parts around it will not stop the leak.
If the household has not changed but the supply of hot water has, the heater may be losing capacity or struggling to recover properly. On an older unit, that can make replacement worth comparing with repair.
One failed component does not make a water heater old. Several repairs within a short period can. At that point, the question becomes how much more you want to put into the existing unit.
Corrosion around the tank body, connections or fittings deserves a closer look. Surface rust does not always mean immediate replacement, but corrosion coming from the tank itself can point to deterioration that cannot be repaired.
Age matters more when it arrives with other problems. If an older water heater is leaking, recovering slowly, making more noise or needing repeated repairs, replacement can make more sense than continuing to fix one issue at a time.
A replacement estimate is free. Replacing a tank with a similar model is usually straightforward, so the price is easier to predict once the size and setup are confirmed.
Tankless replacement can vary more because the installation may need a larger gas line, new venting or added valves for future maintenance. We put the full price in writing before the work starts, and once you sign, that figure is fixed.

Both work well in a DMV house and we install both. Tankless is not automatically the upgrade, and for a smaller household, it often does not pay back before it needs replacing. We would rather say that at the estimate than sell you the more expensive box.
| Tank | Tankless | |
|---|---|---|
| Where the minerals go | Settle as sediment on the floor of the tank | Form as scale directly on the heat exchanger |
| What maintenance means | An annual flush and an anode rod every few years | Descaling roughly yearly, which needs isolation valves installed |
| What it asks of the house | An existing flue and the space it already occupies | Often a bigger gas line and new sealed venting |
| What running out looks like | The tank empties and you wait for it to recover | It does not run out, but flow is capped no matter how many faucets are open |
| The catch | Standing losses, and one day the steel corrodes through | Higher install cost, and the descaling actually has to happen |
What Nero's Heating & Air Checks Before Quoting Either One

A tankless unit draws far more gas while running than the tank it replaces. If the supply pipe narrows on its way across the basement, that has to be in the quote, and finding it afterward is how a fixed price stops being fixed.
Descaling needs a pair of service valves for a pump to connect to. Installing them at installation costs very little, and leaving them out makes every future descale considerably more expensive, which is exactly why they are sometimes quietly omitted from a quote.
The installation is not the last time you hear from us. Around six months later, Nero's Heating & Air follows up to see how the new water heater is performing, answer any questions and make sure everything is still working the way it should.
The gas line, the flue and the space around it. Those three decide which options are genuinely open to you before anything is priced.
Tank and tankless, each with the work the house would actually need. Not a headline price with the connections left out.
The unit itself, the connections, the venting, the isolation valves and taking the old heater away. Binding from the moment you sign it.
The unit is installed, venting checked, and delivered temperature measured at a faucet rather than assumed from the dial setting.
Water heater work reaches right across the region, and a planned replacement is booked rather than squeezed into a day, so it travels further than an urgent call does. The towns below are where this work goes most often. A town missing from the list is still worth a phone call.
You do not need to know the size, model or exact problem before reaching out. Tell us what is happening and whether you are thinking about repair, replacement or tankless, and we will help get the right visit on the calendar.
Our team includes staff who speak Filipino, so you can ask questions and talk through the next step in the language that feels most comfortable.
If the water heater is leaking or has stopped producing hot water altogether, call us directly. We can check the day’s availability and let you know how quickly we can get someone out.




“Nero’s Heating & Air saved me in a pinch. I called and within an hour Julian was at my door and fixed my heat within 5 minutes. Unbelievable customer service. Very grateful for the quick response. Highly recommend to others.”
Caleb Hart
Anywhere a leak would damage something below it, which in practice means any heater not standing on a basement floor with a drain nearby. Codes vary by jurisdiction.
Often twice as long, twenty years against eight to twelve, but only where the descaling is genuinely done. Neglected, the gap closes considerably faster than people expect.
Fifty gallons covers most households of that size comfortably. Usage patterns matter more than headcount does, so two simultaneous showers move the answer further than an extra person would.
Not always in that exact spot. It is a great deal smaller, though it has to sit somewhere the new sealed venting can reach an outside wall sensibly.
It is possible with a small pump and a bucket, provided the isolation valves were installed in the first place. Without those valves it stops being a homeowner job entirely.