AprilAire E070 Review: Built to Duct, Light on Published Ratings

The AprilAire E070W Wi-Fi crawl space dehumidifier is a strong buy for a sealed crawl space or basement that stays above the mid-50s, especially if you want to duct it or check it from your phone. It's a weaker buy if your crawl space runs cold, and AprilAire publishes less about it than its closest rival does. The E070W and its non-Wi-Fi twin, the E070, are 56 lb boxes built to sit in a crawl space or basement, or to be ducted into a house, and run for years. AprilAire rates them at 70 pints a day, says they cover up to 2,200 sq ft, and recommends professional installation.

The thin paperwork shapes everything below. AprilAire's only published capacity figure for the E070 is the legacy one: 70 pints a day at 80°F and 60% relative humidity, measured at 200 CFM with no ducting attached. The current manual and shop pages give no 65°F or 73°F number, and no decibel rating. Santa Fe, which now appears to share a parent company with AprilAire, publishes a 65°F rating and a decibel figure for its Compact70. So with the E070 you're buying on build quality, airflow, ducting options and warranty, and estimating real-world water removal yourself.

Owners mostly back the build-quality reputation. One E070 is still holding a crawl space at 35% after four years, with a drip at the drain fitting as its only complaint. The problems on record are a whole-house install that ran nonstop without producing water, and a two-year-old unit that turned loud. Both are worth reading before you buy.

What we like

• Ducting: 200 CFM of airflow and 8 in inlet and outlet collars in the box, so it ducts into a finished room or a whole house more readily than most crawl space units.
• App control and a complete bundle: the E070W adds Wi-Fi and Bluetooth control through AprilAire's app, and the Amazon bundle we link adds, per its listing title, a condensate pump, drain hose, hanging kit and MERV 11 filter.
• Ordinary power: 115 V and 5.4 A, so it runs from an ordinary grounded outlet if there's one near the unit.
• Owner record: it leans positive, including one E070 at four years and an older AprilAire 70-pint model at five.

What we'd change

• One capacity number: 70 pints/day at 80°F, which doesn't compare with current-test ratings on other units (65°F for portables, 73°F for whole-home units).
• A 50°F floor: it dehumidifies only from 50°F inlet air up, with a 40°F dew point minimum. In a cool crawl space that floor sits close to where you're trying to hold humidity.
• No pump in the cabinet: a bare E070 needs a floor drain or a separate pump.
• Warranty and install: the warranty reads differently depending on where you look, labor is never covered, and AprilAire recommends a professional install.

Which crawl spaces, basements and houses it fits

It fits an encapsulated crawl space with a sealed vapor barrier and closed vents, in a climate where it stays above the mid-50s through winter. It fits a damp basement where you want the dry air sent to the far end through a duct, and a house where you want one unit, tied into ductwork, handling humidity your air conditioner leaves behind in the shoulder seasons. In each case you want a drain or a pump path for the water, because this unit has no bucket worth using.

Pick something else in these cases:

• Cold crawl space: if yours drops into the low 50s or 40s in winter, the E070 is at or past its 50°F floor. The AlorAir Sentinel HD55S is rated down to 33.8°F.
• Vented crawl space: seal it first. Any dehumidifier in a crawl space with open vents is drying outdoor air that keeps coming in.
• You want a published 65°F number: the Santa Fe Compact70 is rated at 43.7 pints/day at the DOE 65°F test and 70 at 80°F, the same legacy figure as the E070.
• Bigger house: AprilAire's 2,200 sq ft claim is the limit we'd plan around. Past it, look at the E080 or a larger unit, and see the sizing notes below.

Shoppers ask whether an E070 can just sit in the attic, switched on, in a house of 1,800 sq ft or so. AprilAire wants ductwork to keep the dry air it blows out away from the air it pulls in, and often only one side needs a duct. Check the temperature too: the E070 dehumidifies only between 50°F and 104°F inlet air, and an attic that runs hotter than that in summer is outside its rated range. Measure yours before you commit. An attic also puts the unit above finished rooms, and the manual is direct about that: "Always install the dehumidifier in or above a condensate pan when locating in or above a finished space." It also wants a float switch in the pan, or the overflow switch on the condensate pump, set up to stop the dehumidifier if water backs up. That's a hookup for your installer, and it belongs in the quote.

E070, E070W, E070 Pro and E080: which is which

The model names on the listings blur together, so here's what each one is, from AprilAire's own pages.

If you want app control, buy the W; the plain E070 is the same box without it. The E080 jump is a judgment call. Its listing doubles the coverage claim (4,400 sq ft against 2,200) for a pint figure only 10 higher, which tells you coverage claims are marketing ranges, not physics. AprilAire encouraged one owner with about 1,700 sq ft between crawl space and basement to size up to the E080 or E100. At 1,700 sq ft that owner is inside the E070's own 2,200 claim, and oversizing a dehumidifier mostly buys you a bigger price and a bigger box. Picking the largest size that stays quiet by comparing decibel ratings is sensible advice you can't follow here, because AprilAire publishes no dB figure for the E070.

The specs that matter

Treat the 70 as the legacy 80°F rating it is; the current E070 manual and shop pages give no 65°F or 73°F number. Since June 2019 the DOE has rated dehumidifiers at lower temperatures: 65°F and 60% RH for portables, 73°F and 60% RH for whole-home units. ENERGY STAR says cooler test air produces a smaller number for the same machine, because cooler air holds less water. AprilAire's E-series sits on the whole-home side of that line. ENERGY STAR lists the E080, E100 and E130 as whole-home dehumidifiers, with the E080 at 65 pints/day under the 73°F test and an integrated energy factor of 2.35 L/kWh, certified in September 2025. The E070 isn't on the list, so there's no E070 figure to quote, and we won't estimate one. Two practical points follow. A 73°F figure, if AprilAire ever publishes one, won't line up directly with the Compact70's 43.7 at 65°F. And a crawl space at 58-60°F gets less than any rated figure, from any brand.

Ducting changes the number too, and the manual shows by how much on airflow. The 70-pint rating was measured at 0.0 in. of static pressure. At 0.4 in., airflow falls to 140 CFM, 30% less than the 200 CFM the rating was measured at. AprilAire doesn't publish capacity at those pressures, so we can't say how many pints that costs, but less air across the coil means less water. A long or restrictive duct run is one more reason to treat 70 as an upper bound.

Convert the 40°F dew point minimum into the humidity numbers you'll see on a hygrometer. In 60°F air, a 40°F dew point is about 48% relative humidity, which leaves plenty of room under the EPA's 60% ceiling. In 55°F air it's about 57%, and in 50°F air about 68%. So in a warm crawl space the E070 can pull humidity well down; in a 55°F crawl space its rated dehumidifying range ends right around the level you're trying to hold. That's what the 50°F floor means in practice.

Running cost is harder to pin down because AprilAire publishes amps, not watts. Multiplying 5.4 A by 115 V gives about 620 volt-amps, and true watts are at or below that. At that ceiling, a full day of running flat out is up to about 14.9 kWh; multiply by your electric rate for the worst case. Without a published wattage or efficiency figure for the E070, we can't say how it compares per pint with the Compact70. A dried-out crawl space cycles the unit on and off, so a day at full power is the worst case, not the normal one.

What the install involves

AprilAire recommends professional installation on its E070 shop page, and the E070 manual says electrical servicing on the unit should be done by a qualified, licensed electrician. Neither stops you from placing the unit yourself, and one E070W owner did exactly that: set it on cinder blocks at the low point of an open crawl space, plugged it into an existing outlet, and ran a condensate pump line outside. That's the easy version. It gets harder if you need a new outlet (an electrician's job), want to hang it from the joists, or want to duct it into the house's HVAC system.

Water is the first decision. The E070 drains through 3/4 in ID tubing by gravity to a floor drain or sump, or into a condensate pump. AprilAire's own Model 4856 pump lifts up to 22 ft. The E070W bundle we link includes a pump, which is the main reason we recommend that listing over the bare unit for a crawl space with no drain. Route the discharge to an interior drain or outside, never back onto the vapor barrier, and if it goes outside in a cold climate, protect the line from freezing. If the unit will hang above a finished room, the manual says to install it in or above a condensate pan, with the pump in the pan as well, and to use a float switch or the pump's overflow switch to stop the dehumidifier should overflow occur. Have your installer set that shutoff up.

Hanging is the second. AprilAire sells a Model 5822 hanging kit for installs that need the unit off the floor, and both Amazon bundles include a hanging kit. Use vibration-isolation hangers if you hang it from the joists, even over a dirt crawl space: some homes transmit the vibration and some people notice it. Given the two noise reports below, we'd spend the extra on isolation for any unit hung under a bedroom or living room.

Ducting is the third, and it's where the E070 earns its price. Both 8 in collars come in the box, and AprilAire says either side can take 8 in flex duct or hard pipe. In a small open crawl space you can skip ducting. In a long basement, ducting the dry air to the far end, or ducting the intake so the unit doesn't re-dry its own exhaust, helps the whole space. Keep runs short and smooth for the airflow reasons above. Tying the unit into a central air system is the job we'd hand to an HVAC contractor.

Then the warranty catch. AprilAire's wording around DIY installs has been strict. A 2022 box carried a printed warning that the product must be installed by a qualified contractor and that failing to do so voids the warranty. The limited warranty printed in the current manual doesn't name a contractor. Its void clause reads: "THIS LIMITED WARRANTY IS VOID IF DEFECT(S) RESULT(S) FROM FAILURE TO INSTALL THE PRODUCT ACCORDING TO THE APRILAIRE INSTALLATION INSTRUCTIONS." It also excludes damage from improper installation. Follow the manual exactly, keep the receipt, register the unit, and if you're ducting it or adding a circuit, hire the pro.

Reliability and living with it

The E070 family's record is mostly good, but most of it covers the first few years. The best report is an E070 at four years: the crawl space sits at 35% and the only fault is a drip from under the threaded drain fitting, with the line to the external pump clear. Other owners report an E070W with no issues installing or running it (they like the Wi-Fi and digital readout), a basement E070 bought after its price dropped working fine a month and a half in, and an E070 that fixed 70-80% summer humidity in a basement and crawl space. Two problems stand out.

The first is the more instructive one. A 70-pint AprilAire in a whole-house install (listed as an E070 Pro) couldn't get a 2,700 sq ft house below 50%, the unit ran continuously, and in a four-hour test no water came out of the drain line. Two details matter. The house is 23% larger than AprilAire's 2,200 sq ft claim. And at the rated condition, four hours is about 12 pints of water, roughly 1.5 gallons; even in drier, cooler air than the test point, a working unit that runs continuously should send something to the drain. Check for a fault code or a disconnected line first; low refrigerant charge is the other suspect. No fix was ever posted, so we treat it as one unresolved case, not a pattern. If it happens to you, it's a service call, not a sizing question.

The second is noise. One owner bought a two-year-old E070 that a seller had never used, heard it run quietly at the seller's house, and then found it loud in their own basement. They put it at about 70 dB, audible on the floor above, though it still works, and say their other AprilAire is whisper quiet. Another AprilAire, model unstated, is noisy next to consumer dehumidifiers by its owner's account, while doing a great job. AprilAire publishes no dB figure, so that's two owner reports and no spec. The manual's warranty also excludes "previously-used products purchased from eBay, similar third party/auction sites, or individuals selling used products." A never-used unit from a private seller sits close to that line, so ask AprilAire about coverage before you buy secondhand.

Beyond the E070, the brand-level record skews positive, though most of it is short-term or brand-wide, so read it as a lean, not a verdict:

• Long-running: an older AprilAire 70-pint model, the 1820, has run in a crawl space for five years with only filter cleaning, though its owner suspects it may be undersized on humid days. Another AprilAire, model unstated, has run in a shop for more than five years, and one owner with two E080s and an E130 calls AprilAires tanks.
• New installs: an E100 owner is very happy two months in, an E130 owner calls the change night and day, and an E080 is so far so good after 10 days. An E080 that replaced a failed AlorAir set up its Wi-Fi without trouble and needed an external condensate pump.
• Complaints: one owner of an unstated model had nothing but issues with it, without saying what they were. An AprilAire of unknown model and age that came with a house bought five years ago has leaked onto the basement floor for a year and is reportedly freezing; the usual suspects are the filter, a blocked drain or low refrigerant, and it is not even certain the unit is a dehumidifier.

Read the warranty for what it says. The E070 manual warrants the unit against defects in materials or workmanship for five years from purchase. The remedy is, "at the sole discretion of AprilAire, to supply, without charge, a replacement for any component or product" found defective, so AprilAire decides whether you get a part or a new unit. Labor, shipping, removal, service and reinstallation costs are excluded. AprilAire's product portal also says 5 years for the E070, and the warranty field on the E070W bundle's Amazon listing says 5 years. The E070W shop page goes further and promises six: a "5-year full replacement" plus one year of parts. We couldn't find a printed E070W warranty to check that against. Labor isn't covered in any version, which matters because labor on a failed unit can cost more than a new one. A full-replacement promise avoids that bill; a part shipped under the manual's wording doesn't. If you're buying the W for the warranty, keep a copy of the shop page with your receipt.

Maintenance is light. Clean the washable filter on the schedule in the manual, check that the drain line and pump stay clear, and keep a separate hygrometer at the far end of the space. The 1820 owner suspected their readings were off because of where their SensorPush sat; a second reading from a different spot settles that.

How it compares

Against the Santa Fe Compact70, this is the closest call in crawl space dehumidifiers. Both read 70 pints/day at 80°F and their floors are a degree apart. The E070 moves more air and the E070W adds Wi-Fi and app control. The Compact70 publishes its 65°F rating, rates itself at 55 dBA where AprilAire gives nothing, carries the better filter, and is a slightly smaller box (12 x 12 x 21 in against 12.5 x 12.5 x 25 in). On warranty the two are closer than the marketing suggests. Both written warranties run five years against defects and let the maker choose whether to send a part or a whole unit, and neither covers labor. The differences: Santa Fe's written warranty covers components for a sixth year, and AprilAire's E070W shop page promises a "5-year full replacement" that the E070 manual's wording doesn't. The owner evidence differs too. One Compact70 owner reports six units failing since 2014 on an older generation, while the worst E070 reports are one unexplained no-water install and one loud unit. If you want app control, ducting headroom, or a pump in the box, buy the E070W bundle. If you want published numbers and the better filter, the Compact70.

Against the AlorAir Sentinel HD55S: the AlorAir costs a fraction as much and keeps running down to 33.8°F. At the one condition both publish, 80°F, the E070 is rated 70 against 55, about 27% more, and it moves more air, filters better and ducts more easily. AlorAir's current warranty gives two years of full coverage and then refrigeration parts only through year six, with shipping on you after the first six months if you send a unit in for inspection instead of taking AlorAir's recommended service option. For a cold crawl space or a tight budget, the HD55S. For a warm crawl space where you want a unit that ducts and lasts, the E070W.

Against the E080W: buy the bigger one only if your space is past the E070's 2,200 sq ft claim, or you're ducting into a whole house with heavy moisture loads. Even the owner running two E080s called that a bit overboard for the upstairs. For a typical crawl space, the E070 is the right size.

Who should buy the E070W

Buy the E070W bundle if your crawl space or basement is sealed, stays above the mid-50s, needs a pump, and you'd like to check humidity from your phone or duct the dry air somewhere useful. It's the version we'd buy, because the bundle covers the pump and hanging kit a bare E070 leaves you to source. If you don't want Wi-Fi, Amazon also lists a plain E070 bundle whose title names a pump, drain hose and hanging kit. Size it against the 2,200 sq ft claim, set it for under 60% (the EPA's ceiling; the DOE crawl space guide aims for 30-50%), and confirm with a separate hygrometer.

Skip it if the crawl space runs cold in winter, if you want a published current-test capacity before you spend this much, or if the warranty fine print and a recommended pro install don't suit how you work. The Compact70 publishes more, and the HD55S costs far less and runs colder.