Decoding the Honeywell TP70WKNR: A Deep Dive into a 50-Pint Dehumidifier for Large Basements

Update on Oct. 6, 2025, 8:45 a.m.

There’s a certain feeling to a damp basement—a cool, heavy stillness in the air, accompanied by a musty scent that clings to everything. It’s more than just an unpleasant atmosphere; according to the Environmental Protection Agency (EPA), unchecked humidity that lingers above 60% creates a breeding ground for mold and mildew, which can compromise your home’s air quality and even its structural integrity. The primary weapon in this domestic battle against dampness is the dehumidifier, a workhorse appliance designed to pull that excess moisture right out of the air. Among the top contenders for large, demanding spaces is the Honeywell TP70WKNR, a model praised for its power and efficiency. But navigating the world of dehumidifiers is fraught with confusing specs, conflicting reviews, and practical questions. Is this machine the right guardian for your home’s lower level? We’re going to take a deep, honest dive to find out, moving beyond the marketing points to give you the information you need to make a confident decision.

 Honeywell TP70WKNR 4000 Sq. Ft. Energy Star Dehumidifier

The Great Dehumidifier Downgrade: Why 50 Pints is the New 70

If you’ve started shopping for a dehumidifier, you’ve likely encountered the most confusing specification of all: the pint capacity. You may see the Honeywell TP70WKNR listed as a 50-pint unit, yet it’s often marketed for spaces that older 70-pint models once claimed. This isn’t a case of shrinking technology; it’s a change in the rules of the game. In 2019, the U.S. Department of Energy (DOE) updated its testing standards. Previously, dehumidifiers were tested in a warm, muggy environment of 80°F and 60% humidity. The new standard uses a cooler, more basement-realistic temperature of 65°F and 60% humidity. Because the laws of physics dictate that it’s harder to extract moisture from cooler air, all dehumidifiers received a lower pint rating under the new, more rigorous test. So, to be clear: a modern 50-pint dehumidifier like the TP70WKNR possesses the same raw moisture-removal power as a pre-2019 70-pint model. It’s a high-capacity machine fully intended for large spaces up to 4,000 square feet, making it a formidable tool for sprawling basements, workshops, and other challenging environments where lesser machines would struggle to keep up.

 Honeywell TP70WKNR 4000 Sq. Ft. Energy Star Dehumidifier

The Power Plant: Unpacking Moisture Removal and Energy Efficiency

Now that we know what a 50-pint capacity truly means, let’s look at how efficiently the TP70WKNR puts that power to work. Its core mission is to pull up to 50 pints (nearly 6 gallons) of water from your air every 24 hours, a task it performs with impressive vigor. This is the kind of performance needed to take a basement from 70% relative humidity down to a comfortable and safe level, often recommended by organizations like ASHRAE to be between 40% and 50%. But raw power is one thing; efficiency is another. Based on independent testing, the TP70WKNR draws approximately 563 watts of power during operation. This is a notable figure because it’s slightly below the average for its 50-pint peers, some of which can pull over 600 watts. This superior performance is what earns it the “ENERGY STAR Most Efficient” certification, a designation reserved for models that significantly outperform standard Energy Star requirements. For you, this translates directly into lower electricity bills. Running a 563-watt appliance for eight hours a day at an average U.S. electricity rate of $0.17 per kWh would cost approximately $0.76 per day, or about $23 per month. A less efficient 610-watt model, by contrast, would cost nearly 10% more over the course of a year. The TP70WKNR is engineered not just to dry your air, but to do so without becoming an energy glutton.

The Drainage Dilemma: The Never-Ending Bucket vs. The Gravity-Fed Hose

A powerful dehumidifier will collect a lot of water, and you have two primary methods for dealing with it on the TP70WKNR. The first is the traditional water tank. This unit’s bucket has a capacity of 14 pints, which is about average for its class. In a very damp basement, this means you could be emptying it once or even twice a day. While features like the anti-spill splash guards are thoughtful touches, the real goal for most basement users is continuous, unattended operation. This is where the second option comes in: the continuous drain feature. The unit comes with a 3.28-foot (1-meter) hose that connects to a dedicated outlet on the back. However, it’s crucial to understand that this is a gravity-fed system. It has no pump. This means the dehumidifier must be elevated above the drain point (like a floor drain or sump pump basin) for it to work. User complaints about the included hose being too short or flimsy often miss this key physical constraint; the system relies on a consistent downward slope to drain properly. A longer hose lying flat on the floor simply won’t work. If your only available drain is a utility sink, you must place the dehumidifier on a sturdy countertop or shelf. For true “set it and forget it” convenience, your placement is dictated by physics, not just by where you have a power outlet.
 Honeywell TP70WKNR 4000 Sq. Ft. Energy Star Dehumidifier

The Sound of Dryness: A Hard Listen to the Noise Profile

Whether you choose the bucket or the continuous hose, the goal is unattended operation. But a machine you can ignore visually is useless if you can’t ignore it audibly. So, let’s address the elephant in the room: how loud is the Honeywell TP70WKNR, really? Objectively, its sound output is respectable, measuring around 49.2 decibels on low fan speed and 53.3 decibels on high when tested from ten feet away. For context, a modern refrigerator hums along at about 40 dB, and a quiet conversation is around 60 dB. On paper, these numbers place it well within the acceptable range for a powerful appliance. However, the story of noise is about quality as much as quantity. In-depth analysis reveals that the TP70WKNR’s less pleasant sound profile comes from a compressor buzz that is more pronounced than the fan’s “white noise.” Many top-exhaust units use the rush of air to mask the mechanical sounds of the compressor, but this Honeywell model is less successful at this acoustic camouflage. The result is a sound that you are more likely to notice. This makes placement critical: in a remote utility room or an unfinished corner of the basement, the noise is unlikely to be a problem. But if your “basement” is a finished home office, a media room, or a children’s play area, the persistent hum could become a significant distraction.

Living with the Machine: Usability, Controls, and a Clever Workaround

Day-to-day interaction with the TP70WKNR is straightforward, though not without its quirks. The front “Mirage” display, which shows the current humidity level, is a genuinely helpful feature, allowing you to monitor the room’s condition from a distance. The top control panel, however, relies on icons rather than text, which may require an initial glance at the manual for new users. A more significant usability issue lies in its timer function. It’s a simple delay-on or delay-off timer, not a recurring daily schedule. You can tell it to turn off in 8 hours, but you can’t tell it to run every night from 8 pm to 8 am. This is a common frustration for those who want to run the unit during off-peak hours or only when they’re away.

Fortunately, there’s a brilliant and simple workaround. The TP70WKNR has an auto-restart feature, meaning it remembers its last settings and resumes operation after a power interruption. This allows you to connect it to a cheap third-party Wi-Fi smart plug. Using the smart plug’s app (like Kasa, Wyze, or a generic Smart Life plug), you can set up any complex schedule you desire. The smart plug simply cuts and restores power, and the dehumidifier dutifully turns back on at your last-set humidity level. This small investment transforms the unit’s scheduling capabilities from basic to fully automated.

The 5-Year Warranty: Reading the Fine Print

With a clever workaround, you can make the day-to-day operation quite seamless. But what about the long haul? A dehumidifier’s compressor runs hard, and reliability is a major concern. This brings us to one of Honeywell’s most prominent claims: the 5-year warranty. On the surface, this is a major selling point, far exceeding the industry-standard one-year warranty. However, it’s crucial to read the fine print. The coverage is structured as a one-year comprehensive warranty covering the entire unit, followed by an additional four years of coverage for the “sealed system” only. The sealed system consists of the core refrigeration components: the compressor, evaporator, condenser, and connecting tubing. These are the parts least likely to fail, but the most expensive to fix if they do. So, while this extended warranty offers valuable long-term protection against a catastrophic failure of the unit’s heart, it does not cover issues with fans, sensors, control boards, or the water bucket after the first year. It’s a better-than-average safety net, but not the five-year, bumper-to-bumper coverage one might initially assume.

 Honeywell TP70WKNR 4000 Sq. Ft. Energy Star Dehumidifier

The Final Verdict: Is the Honeywell TP70WKNR the Right Workhorse for Your Home?

After dissecting its performance, features, and quirks, a clear picture of the Honeywell TP70WKNR emerges. It is not a one-size-fits-all solution, but rather a specialized tool that excels in specific conditions.

You should seriously consider the Honeywell TP70WKNR if:

  • You have a large basement or space (1500-4000 sq. ft.) with a significant humidity problem.
  • You prioritize raw moisture removal and high energy efficiency to keep running costs low.
  • You have a floor-level drain (like a sump pump or floor drain) available for a gravity-fed continuous drain setup.
  • The unit will be placed in an unfinished basement, utility room, or another area where its noticeable compressor hum won’t be a disturbance.
  • You appreciate a longer warranty on the most critical component, the compressor.

You might want to look at other options if:

  • You need to place the dehumidifier in a finished, quiet living space like a home office or bedroom.
  • Your only drainage option is a utility sink, and you cannot or do not want to elevate the entire 40-pound unit. In this case, a model with a built-in pump (like the Honeywell TP70PWKN) is a far better choice.
  • You require sophisticated, built-in scheduling without wanting to use a separate smart plug.

Ultimately, the Honeywell TP70WKNR is a powerful and efficient workhorse. It forgoes some of the creature comforts and acoustic refinements of other models to focus on its primary mission: drying large volumes of air without breaking the bank on your electricity bill. If your needs align with its strengths, it stands as a reliable and cost-effective guardian against the persistent encroachment of dampness in your home.