AprilAire E070 vs E080: Specs & Differences

The AprilAire E080 is not simply an E070 with a higher model number. It raises normalized capacity from 70 to 80 pints per day—a 10 PPD, or about 14.3%, increase—but it is also a larger cabinet with 10-inch duct collars and a different installation profile. The right choice depends on whether your crawl space actually needs the extra capacity.

Quick answer

Choose the E070 when 70 PPD sits comfortably inside your required capacity range. Step up to the E080 when the E070 would sit near the lower edge of the recommendation or your moisture load calls for more headroom. Do not choose the E080 just because it is the larger model—extra capacity only helps when the space needs it.

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Testing status: Specification research. CrawlClimate compares published product data under stated test conditions and does not present either unit as hands-on tested. Manufacturer coverage figures are shown as context rather than treated as a standardized capacity measurement.

AprilAire E070

AprilAire E080

AprilAire E070 vs E080 specifications

Specification	AprilAire E070	AprilAire E080	What it means
Normalized capacity	70 PPD	80 PPD	E080 provides 10 PPD more capacity, about 14.3% above E070.
Rating condition	80°F / 60% RH	80°F / 60% RH	These ratings are suitable for like-for-like comparison.
Published dehumidification range	50–104°F	50–104°F	Neither is the first choice when the crawl space regularly falls below 50°F.
Airflow at 0.0 in. w.c.	200 CFM	185 CFM	The higher-capacity E080 does not simply use a higher free-air airflow number.
Cabinet size	12.5H × 12.5W × 25D in.	15H × 14W × 26D in.	E070 is the smaller cabinet, especially in height and width.
Unit weight	56 lb	63 lb	E080 is about 7 lb heavier.
Duct collars included	8-in. inlet + outlet	10-in. inlet + outlet; backdraft damper included	Existing duct plans may favor one model’s connection size.
Drainage	Gravity drain; 10-ft drain tubing included	Gravity drain; hose not listed as included on current store page	Neither standard model has a built-in condensate pump.
Filter	Washable MERV 8	Washable MERV 8	No meaningful filter-grade advantage between the two.
Manufacturer store coverage	Up to 2,200 sq. ft.	Up to 4,400 sq. ft.	Do not interpret this as E080 having twice the standardized capacity. Coverage methods are manufacturer context.
Specification status	Manufacturer documentation checked	Manufacturer documentation checked	Verify the exact current manual before final installation.

The biggest numerical difference is 70 vs 80 PPD—not 2,200 vs 4,400 sq. ft. AprilAire’s current store pages publish very different coverage maximums even though standardized moisture-removal capacity rises by only about 14.3%. CrawlClimate therefore sizes from capacity and crawl-space conditions first, then uses coverage claims as supporting context.

What actually changes when you move from E070 to E080?

1. You get 10 PPD more normalized capacity

The E080’s 80 PPD rating is 10 PPD above the E070’s 70 PPD rating under the same 80°F / 60% RH condition. Mathematically, that is about a 14.3% capacity increase. That extra headroom can matter when a crawl space has a heavier moisture load or when 70 PPD falls near the bottom edge of the sizing recommendation.

2. The E080 is physically larger

AprilAire lists the E070 at 12.5 × 12.5 × 25 inches and the E080 at 15 × 14 × 26 inches. The difference is not dramatic in an open basement, but an extra 2.5 inches of height and 1.5 inches of width can matter in a low crawl space once filter access, drain routing and duct connections are included.

3. The duct connection size changes

The E070 currently ships with 8-inch inlet and outlet duct collars. The E080 uses 10-inch collars and includes a backdraft damper. If the dehumidifier will be ducted, check the planned duct sizes before treating the two models as interchangeable.

4. Drainage remains a gravity-drain setup

Neither standard model has a built-in condensate pump. The E070’s current package list includes 10 feet of drain tubing; the E080 product page says to connect a drain hose but does not list one in the box. If the discharge point is above the dehumidifier, compare a pump-equipped model or a correctly sized external condensate pump instead.

Compare built-in pump models →

Is the E080 14% “better” than the E070?

No. It has about 14.3% more standardized moisture-removal capacity. That is a real and useful difference, but it does not make the E080 universally better.

When E070 makes sense

Capacity requirement sits comfortably below 70 PPD

If the crawl space can be handled without using the E070 near its limit, the E080’s extra capacity may add little practical value.

When E080 makes sense

70 PPD is becoming marginal

If the recommended range begins around 70 PPD or the space has a heavier moisture load, 80 PPD provides more useful headroom.

When neither makes sense

The conditions fall outside both models

If the required capacity is materially above 80 PPD, the space is regularly below 50°F, or pump drainage is required, compare another class of equipment.

Two sizing examples

These examples show how to use a capacity range; they are not substitutes for entering your own crawl-space conditions.

Example ASuggested range: 55–70 PPDE070 sits inside the range. E080 adds capacity above it.

Likely starting pointE070Provided temperature, drainage and installation requirements also fit.

WhyExtra capacity is not automatically usefulChoose the smaller model when it already satisfies the load with reasonable headroom.

Example BSuggested range: 70–85 PPDE070 is at the lower boundary while E080 sits inside the range.

Likely starting pointE080The extra 10 PPD now has a clear sizing purpose.

WhyMore useful capacity headroomThere is less reason to choose the 70-PPD model when the load already approaches its rating.

Use your actual conditions

Which capacity class does your crawl space need?

Enter area, ceiling height, humidity, target RH, temperature, sealing and drainage conditions. Use the result to decide whether 70 or 80 PPD is the better starting point—or whether you should be looking at a different class entirely.

Size my crawl space →

Choose the AprilAire E070 if…

Your calculated requirement sits comfortably within the 70-PPD class.
The smaller 12.5 × 12.5 × 25-inch cabinet fits the available crawl-space clearance better.
Your duct plan is already built around 8-inch inlet and outlet connections.
A continuous gravity drain is practical.
You do not gain a meaningful sizing benefit from stepping up to 80 PPD.

View AprilAire E070 profile →

Choose the AprilAire E080 if…

Your required range makes 70 PPD marginal and the additional 10 PPD provides useful headroom.
The larger cabinet fits and 10-inch duct connections work with the installation plan.
You want the E080’s broader AprilAire control/ducting configuration rather than simply the smallest cabinet.
A gravity drain is practical.

View AprilAire E080 profile →

Choose neither if…

Your crawl space regularly falls below 50°F. Both models publish 50°F as the lower dehumidification inlet condition. Compare low-temperature options instead.
You need a built-in pump. Both standard models are gravity-drain units.
Your calculated load is materially above 80 PPD. Moving to E080 does not solve a genuinely higher-capacity requirement.
Your installation cannot provide the required clearances, drainage or duct arrangement. Physical fit is part of product fit.

Compare cold-space options →
Compare pump-equipped options →

Why the published square-foot figures should not decide this comparison

AprilAire’s current store pages list the E070 for applications up to 2,200 sq. ft. and the E080 up to 4,400 sq. ft. Those figures are useful manufacturer context, but the E080 does not have twice the standardized capacity—the change is 70 to 80 PPD.

That is why CrawlClimate does not convert the coverage figures into a simple “E080 covers twice as much” conclusion. Actual crawl-space sizing also depends on sealing, humidity, temperature, ceiling height, moisture sources and how quickly the space needs to recover after a moisture event.

Frequently asked questions

What is the main difference between the AprilAire E070 and E080?

The core capacity difference is 70 versus 80 PPD at 80°F / 60% RH. The E080 is also physically larger, uses 10-inch rather than 8-inch duct collars, and has a different control/installation configuration.

Is the E080 worth choosing over the E070?

It is worth stepping up when the extra 10 PPD serves an actual sizing need. If the E070 already sits comfortably inside the required range, the higher model number alone is not a reason to choose the E080.

Which is better for a 1,500 sq. ft. crawl space?

Square footage alone cannot decide it. For a controlled 1,500 sq. ft. crawl space, 70 PPD may already be sufficient; a wetter, looser or more demanding space may justify additional headroom. Use the crawl-space conditions rather than the area alone.

Which is better for a 2,000 sq. ft. crawl space?

The E080 is the more natural starting point when a 2,000 sq. ft. space needs more than the 70-PPD class, but a tightly controlled space can behave very differently from a damp or loosely sealed one. See the dedicated 2,000-sq-ft guide and calculator before treating the area as the only sizing input.

Do the E070 or E080 have a built-in pump?

No. Both standard models use continuous gravity drainage. If water must be lifted to a higher drain point, plan for an appropriate external pump or compare a dehumidifier with a built-in pump.

Related CrawlClimate guides

By sizeBest for 1,500 Sq FtSee where 70 PPD is a natural starting class and when more headroom makes sense.
By sizeBest for 2,000 Sq FtCompare E080 with higher-capacity alternatives for larger crawl spaces.
ComparisonE070 vs Santa Fe Compact70Compare the E070 with another 70-PPD professional crawl-space option.

Primary sources checked for this comparison

Source note: Manufacturer pages and documentation can change. CrawlClimate keeps standardized capacity separate from manufacturer coverage claims and flags differences that materially affect sizing or installation.

Affiliate disclosure: CrawlClimate may earn a commission from qualifying purchases made through some merchant links. Affiliate status does not determine which capacity class is recommended.