Author: Aaron Michaels, P.E.

Aaron is a licensed Professional Engineer (P.E.) with 15+ years of experience designing plumbing systems for high-rise commercial buildings, hospitals, and government facilities. He contributes expert commentary on water-saving technologies, code updates, and pipe layout best practices. Aaron has served on code review panels and is an ASPE (American Society of Plumbing Engineers) member.
I’ll admit it: the first time I saw my tankless water heater flashing the Navien error code E762, I panicked. There I was, wrapped in a cozy towel after a hot shower when my heater decided to greet me with a big ol’ error code. I thought, “Oh no, not today!” If you’ve found yourself in a similar situation—staring down that flashing code and wondering whether you need to call a plumber or if you’re about to enter a never-ending series of cold showers—you’re in the right place. Navien error code E762 doesn’t have to be the end of the…
It was a chilly morning when I hopped into the shower, excited for a warm, relaxing start to my day. But as the water hit my skin, it wasn’t warm. It wasn’t even lukewarm. It was ice-cold. I cursed under my breath and rushed to check my Navien tankless water heater. That’s when I saw it: Error Code E438. Of course, in the moment, my heart sank. What did this mean? Was I going to have to call in an expensive technician? What was going on with my water heater? If you’ve ever dealt with Navien Error Code E438, I…
If you’re one of the many homeowners who rely on a Navien tankless water heater, you know how important it is to keep it running smoothly. But what happens when you encounter a DHW (Domestic Hot Water) wait issue? This problem can cause delays in getting hot water, which is, of course, less than ideal. Fortunately, troubleshooting a Navien Water Heater DHW Wait Issue doesn’t have to be a stressful experience. Whether you’re a DIYer or prefer to call in the professionals, I’ve got you covered with practical steps to resolve this issue and get your system back to its…
I remember the first time my Navien tankless water heater stopped working mid-shower. One minute I was enjoying the steamy comfort, the next—I was freezing and confused. After fumbling with buttons and Googling like mad, I realized it wasn’t a major issue. It just needed a reset. If you’ve been there (or are there now), don’t worry. I’ll walk you through how to reset Navien tankless water heater units in a simple, local-expert kind of way—because no one should have to start their day with cold water. Why Does a Navien Tankless Water Heater Need Resetting? You might be wondering…
If you’re a homeowner relying on a Navien tankless water heater or boiler system, encountering error codes can be a frustrating experience. One of the most common issues is Navien error code E110, which can leave you without hot water and scratching your head. Don’t worry though! This blog post will break down what this error means, why it happens, and how to resolve it. Whether you’re a DIY enthusiast or prefer calling in a professional, you’ll find practical advice to help you get your plumbing systems back on track. What is Navien Error Code E110? Navien error code E110…
If you’ve recently encountered the Navien error code E003, you’re not alone. As a homeowner relying on your Navien tankless water heater, running into error codes can be frustrating. This particular error code signals that something’s not quite right, but don’t worry—help is at hand. Let me walk you through what this error means, why it occurs, and how you can fix it quickly. Understanding how this error relates to the overall plumbing systems in your home can help you maintain a more efficient and reliable water heating solution. What Does Navien Error Code E003 Mean? Navien error code E003…
If you’ve recently made the switch to Cirkul or are considering upgrading your hydration game with a Cirkul water bottle, you’re probably asking: how long does a Cirkul cartridge last? The answer isn’t one-size-fits-all. It depends on your flavor dial setting, how much water you drink daily, and even which Cirkul flavors you’re using. This guide breaks it down based on real usage scenarios—from flavor setting 1 to 10—and helps you make the most out of every Cirkul cartridge. Whether you’re hooked on dragon fruit, curious about passion fruit, or just looking for a way to drink more water, we’ve…
Water plays a vital role in our lives—not just for drinking, but also in science, cleaning, cooking, and industrial use. One important concept in understanding water is pH, a measure of how acidic or basic a substance is. If you’ve ever wondered why distilled water with a pH of 7 is considered neutral, this article will break it down simply and clearly. We’ll also explore related concepts like the pH of distilled water, tap water pH, and even how common items like baking soda affect pH. Understanding the pH Scale Before we talk about distilled water, it’s important to understand…
Sometimes Life Gets Weird Like That! Let’s set the scene: You’re at home, minding your business, and you head into the bathroom. You do your thing, reach for the handle, and—nothing. Nada. No refill, no swish, just a dry, uncooperative bowl of awkwardness. Turns out, the water’s off. Maybe there’s a plumbing issue, a broken main, or the city’s doing maintenance. Or maybe you forgot to pay your bill (no judgment). Either way, you’ve now got a toilet full of… memories… and no idea what to do. Here’s the good news: You can still flush a toilet when the water…
So, you’re standing there—maybe in a towel, maybe elbow-deep in dirty dishes—just trying to get some hot water when BAM, your trusty Navien tankless water heater flashes an error code on the display like it’s trying to communicate in Morse code. And you’re thinking: “What the heck is error code E110? Should I be worried? Is my hot water gone forever?” Relax. You’re not alone—and most of the time, these codes are less about doom and more about diagnostics. Navien water heaters are actually pretty smart systems. They’re designed to throw up error codes so you can catch issues early,…