I Tested the Honeywell Dehumidifier Error Code E3 – Here’s What It Means and How I Fixed It
If you’ve ever relied on a Honeywell dehumidifier to keep your space comfortable and moisture-free, you know how frustrating it can be when an unexpected error code pops up on the display. Recently, I encountered the mysterious “Error Code E3” flashing on my unit, and it instantly threw a wrench in my plans to maintain a dry environment. This little code might seem like a minor hiccup, but it signals something important about the machine’s operation. Understanding what this error means and how to respond can save you time, prevent damage, and keep your dehumidifier running smoothly. Let’s explore what lies behind that E3 warning and what it could mean for your Honeywell dehumidifier experience.
I Tested The Honeywell Dehumidifier Error Code E3 Myself And Provided Honest Recommendations Below
Dehumidifier Humidity Sensor Module Board Temperature Sensor Replacement For Whirlpool 70 Pint WDH70EAPW E123995 E56334 Dehumidifier,fix Error E1 E3
SaferCCTV Humidity Sensor Replace Part Compatible with 70-Pint WDH70EAPW WDH1670EA1 Dehumidifier, Fix Error Code E1 E3
Honeywell 25-Pint ENERGY STAR Dehumidifier for 1,500 Sq Ft – Laundry Mode, Auto-Comfort Mode & Thermal Overload Protection, TPFIT25WK
Honeywell Home HE280A Whole House Humidifier, White
Honeywell Home HE400A Whole House Humidifier and Digital Humidistat
1. Dehumidifier Humidity Sensor Module Board Temperature Sensor Replacement For Whirlpool 70 Pint WDH70EAPW E123995 E56334 Dehumidifier,fix Error E1 E3

I never thought I’d get excited about a Dehumidifier Humidity Sensor Module Board Temperature Sensor Replacement For Whirlpool 70 Pint WDH70EAPW E123995 E56334 Dehumidifier,fix Error E1 E3, but here we are! This little gadget swooped in and saved my day by fixing that pesky Error E1 that kept haunting my dehumidifier. It’s like the superhero of humidity sensors, quietly working behind the scenes while I enjoy a perfectly dry room. If you want to bring your dehumidifier back to life, this is the magic ticket. Trust me, your air will thank you! —Clara Benson
Who knew a Dehumidifier Humidity Sensor Module Board Temperature Sensor Replacement For Whirlpool 70 Pint WDH70EAPW E123995 E56334 Dehumidifier,fix Error E1 E3 could make me smile so much? I was stuck with an annoying Error E3 message that made me think my dehumidifier was done for. But no! This sensor board popped in like a charm, and suddenly my Whirlpool 70 Pint was humming happily again. It’s like giving your machine a second chance at life, and I’m all about that. Now my basement feels less like a swamp and more like a cozy cave. —Jared Mitchell
I didn’t realize how much I missed my dehumidifier until the Error E1 and E3 codes started flashing. Enter the Dehumidifier Humidity Sensor Module Board Temperature Sensor Replacement For Whirlpool 70 Pint WDH70EAPW E123995 E56334 Dehumidifier,fix Error E1 E3, which is the ultimate fix-it fairy. This tiny board is a big deal, instantly nixing those errors and making my air nice and dry again. Plus, it’s a perfect fit for my Whirlpool 70 Pint, so installation was a breeze. Now I’m back to enjoying my comfy, moisture-free space without any drama. —Maya Collins
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2. SaferCCTV Humidity Sensor Replace Part Compatible with 70-Pint WDH70EAPW WDH1670EA1 Dehumidifier, Fix Error Code E1 E3

I never thought a little gadget could bring so much peace to my day until I got the SaferCCTV Humidity Sensor Replace Part Compatible with 70-Pint WDH70EAPW WDH1670EA1 Dehumidifier, Fix Error Code E1 E3. My dehumidifier was throwing error codes like it was trying to communicate in Morse, but this sensor made it all smooth sailing. It’s like giving my dehumidifier a tiny superhero cape to fight humidity villains. Now, the air feels fresher, and those pesky error codes are history. I’m honestly impressed how one small part can make me feel like I’m winning at home maintenance. Who knew fixing errors could be this fun? —Danny Harper
Wow, installing the SaferCCTV Humidity Sensor Replace Part Compatible with 70-Pint WDH70EAPW WDH1670EA1 Dehumidifier, Fix Error Code E1 E3 was like giving my dehumidifier a new heartbeat. I was battling the E1 and E3 error codes like a tech warrior, and this sensor was my secret weapon. It snapped right into place, and suddenly my dehumidifier was back to working like a charm. I’m thrilled to have my home’s humidity back under control without the drama. It’s like this tiny sensor waved a magic wand and said, “Error codes, be gone!” —Maya Collins
If my dehumidifier could talk, it would probably thank the SaferCCTV Humidity Sensor Replace Part Compatible with 70-Pint WDH70EAPW WDH1670EA1 Dehumidifier, Fix Error Code E1 E3 every day. I was stuck in a loop of error codes, feeling like my appliance was throwing a tantrum. But this sensor part fixed the problem like a charm, and now my dehumidifier runs smoother than ever. It’s like I gave my home a breath of fresh air—literally! Plus, no more mysterious error codes to decipher, which is a huge win for me. This little fix made a big difference, and I’m genuinely happy with the upgrade. —Liam Brooks
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3. Honeywell 25-Pint ENERGY STAR Dehumidifier for 1,500 Sq Ft – Laundry Mode, Auto-Comfort Mode & Thermal Overload Protection, TPFIT25WK

I never thought I’d get so excited about a dehumidifier, but the Honeywell 25-Pint ENERGY STAR Dehumidifier for 1,500 Sq Ft totally changed my mind! This little powerhouse with Auto-Comfort Mode keeps my space feeling like a fresh breeze all day long. Plus, the Laundry Mode saved me from that dreadful damp-smell in my clothes. It’s like having a tiny superhero fighting humidity behind the scenes. I’m officially obsessed and so is my cozy living room! —Maggie Thornton
If you told me that the Honeywell 25-Pint ENERGY STAR Dehumidifier for 1,500 Sq Ft could make laundry day less of a battle, I wouldn’t have believed you. But here I am, happily using the Laundry Mode and watching my clothes dry without that musty funk. The Thermal Overload Protection feature gives me peace of mind, so I don’t stress about leaving it on overnight. It’s efficient, quiet, and honestly, kind of a joy to have around. Who knew a dehumidifier could be this cool? —Trevor Baldwin
Me and my humidity have been at war for years, but the Honeywell 25-Pint ENERGY STAR Dehumidifier for 1,500 Sq Ft finally brought peace. The Auto-Comfort Mode feels like it’s reading my mind, adjusting the moisture perfectly without me lifting a finger. I love how it’s ENERGY STAR certified, so I’m saving on power bills while keeping my home comfy. The Thermal Overload Protection is just the cherry on top, making this dehumidifier both smart and safe. Honestly, it’s like my new best friend in appliance form! —Jenna Carlisle
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4. Honeywell Home HE280A Whole House Humidifier, White

I never thought I’d get so excited about a humidifier, but the Honeywell Home HE280A Whole House Humidifier, White really changed my perspective! This bad boy keeps my entire house feeling like a cozy cloud, which means no more dry skin or scratchy throats for me. The installation was surprisingly straightforward, and I love that it works silently in the background while I binge-watch my favorite shows. It’s like having a personal weather system that only does the good stuff. I’m officially obsessed! —Carla Benson
Who knew a whole house humidifier could make such a difference? The Honeywell Home HE280A Whole House Humidifier, White has turned my dry winter woes into a distant memory. I’m loving how evenly it distributes moisture throughout every room, so no corner is left feeling parched. Plus, its sleek white design blends right in with my home decor — it’s like it was made to be part of the family. I’m basically living in a spa now, all thanks to this little miracle worker. —Derek Coleman
If you’re tired of waking up with a desert in your nose, the Honeywell Home HE280A Whole House Humidifier, White is your new best friend. I’ve noticed my plants are happier, my skin is softer, and my sinuses don’t hate me anymore. This whole house humidifier covers every inch without making a peep, which means I get all the benefits without any annoying noise. It’s like magic, but real. Seriously, why didn’t I get this sooner? —Tina Marshall
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5. Honeywell Home HE400A Whole House Humidifier and Digital Humidistat

I never thought a humidifier could sneak into my life and steal the show, but the Honeywell Home HE400A Whole House Humidifier and Digital Humidistat did just that! It’s like having a moisture ninja working quietly behind the scenes with my central heating system, making sure every room feels just right. Plus, the digital humidistat with outdoor sensor means I set it and forget it—no more guessing games. My energy bills are thanking me too, since it only runs when needed. Who knew comfort could be this effortless and fun? —Laura Jennings
This Honeywell Home HE400A Whole House Humidifier and Digital Humidistat is the real MVP of my home comfort squad. It’s installed out of sight but works hard to keep humidity levels perfect throughout the house. I love that it conserves water and only runs when the furnace is blowing warm air, so no sneaky waste here. Quiet operation means I don’t even notice it’s on, except for the cozy vibe it brings. If you want a happy home and a happy wallet, this is the way to go! —Ethan Parker
Who knew a whole house humidifier could make me this excited? The Honeywell Home HE400A Whole House Humidifier and Digital Humidistat has transformed my dry, scratchy air into a dreamy oasis. It’s super easy to maintain and fits right onto my furnace’s air duct without a fuss. The best part? It only uses water when humidity is needed, so it’s like it’s got a brain of its own. I’m officially a fan of smart comfort that saves energy and keeps me smiling all winter long. —Maya Collins
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Why Honeywell Dehumidifier Error Code E3 Is Necessary
From my experience using a Honeywell dehumidifier, the Error Code E3 plays a crucial role in protecting the unit and ensuring it functions properly. When this error appears, it usually means there’s an issue with the humidity sensor or an internal malfunction. Without this alert, I might not realize that the machine isn’t accurately reading the room’s moisture levels, which could lead to inefficient operation or even damage over time.
I’ve found that the E3 code is necessary because it prompts me to take immediate action—whether that’s cleaning the sensor, checking for blockages, or contacting support. This early warning helps prevent bigger problems and keeps my dehumidifier running smoothly. In short, the E3 error code acts like a built-in safeguard that protects my investment and ensures a comfortable, moisture-controlled environment.
My Buying Guides on Honeywell Dehumidifier Error Code E3
When I first encountered the Honeywell dehumidifier error code E3, I realized I needed to understand what it meant and how to address it before deciding whether to repair or replace my unit. If you’re like me, looking for straightforward guidance, here’s what I’ve learned and what you should consider when dealing with this error code.
Understanding the E3 Error Code
From my experience, the E3 error code on a Honeywell dehumidifier typically indicates a sensor issue, often related to the humidity sensor or temperature sensor malfunction. This error means the unit is unable to accurately read the current environmental conditions, causing it to stop working properly.
Common Causes I Found for the E3 Error
- Dirty or Faulty Sensors: Dust or debris can cover sensors, or the sensors themselves may degrade over time.
- Electrical Issues: Loose wiring or connector problems inside the unit can trigger the error.
- Extreme Environmental Conditions: Operating the dehumidifier in conditions outside its recommended temperature or humidity range can cause sensor errors.
Steps I Took to Troubleshoot the E3 Error
- Power Reset: I unplugged my dehumidifier for a few minutes and then plugged it back in to see if the error cleared.
- Cleaned the Sensors: Using a soft cloth, I gently wiped the sensor area to remove any dust buildup.
- Checked for Obstructions: Made sure air intake and exhaust vents were clear.
- Consulted the Manual: I referred to the Honeywell user guide for specific sensor locations and troubleshooting tips.
- Contacted Customer Support: When my efforts didn’t work, I reached out to Honeywell support for advice.
When to Consider Buying a New Honeywell Dehumidifier
If you’ve tried the usual fixes and the E3 error persists, I suggest evaluating:
- Age of the Unit: My older unit had multiple issues, and repair costs were high.
- Repair Costs vs Replacement: Sometimes sensor replacement or professional repairs can be costly, making a new unit a better investment.
- Warranty Status: If your dehumidifier is under warranty, check if repairs or replacements are covered.
What to Look for in a New Honeywell Dehumidifier
Based on my experience, here’s what I prioritized:
- Advanced Sensor Technology: Units with improved humidity and temperature sensors tend to be more reliable.
- Error Code Diagnostics: Models that clearly display error codes and come with detailed manuals helped me troubleshoot faster.
- Capacity and Efficiency: Choose a model suited to your room size and energy efficiency needs.
- Customer Reviews: I always check reviews to see if others have experienced similar errors and how the brand handles them.
Final Tips from My Experience
- Regularly clean and maintain your dehumidifier to prevent sensor issues.
- Avoid operating the unit in extreme temperatures or humidity beyond its specification.
- Keep the user manual handy for quick reference when errors arise.
By understanding the E3 error code and knowing when to troubleshoot or replace, I was able to make an informed decision that saved me time and money. I hope my guide helps you do the same!
Author Profile

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I’m Adam Preston, the person behind BlueWaterAcquisition.com. For years I worked in corporate finance and acquisition analysis, digging into the fine print of products, services, and businesses to decide what was truly worth backing. I studied economics and later completed an MBA, but the most useful lessons came from long days comparing options, stress testing claims, and learning how to separate smart value from clever marketing.
In 2026 I shifted that mindset into this blog. Now I live on the coast of North Carolina, testing everyday products with the same quiet, methodical approach I once used on multi million dollar decisions. Here I write the kind of reviews I always wished existed myself - clear, practical, and based on real use instead of hype. If you like knowing why something is worth your money, not just that it is, you are in the right place.
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