The catch
AprilAire E080
Under duct resistance, its published airflow drops off more steeply. Look at the actual pressure, and do not assume that collar size proves compatibility.
Side by side
AprilAire E080 vs E100: Under duct load, E100 keeps the cabinet size and gets more airflow
Quick verdict
E100 is the choice once an installer confirms that the moisture load or duct resistance calls for its higher capacity and stronger fan curve. At 0.2 inches of static pressure, E100 delivers 245 CFM against 135 for E080. The body is the same 14 by 26 by 15 inch size on both, with ten-inch collars. E080 stays a reasonable choice if its capacity and pressure capability satisfy the design and its current total installed price is better. Neither includes a pump, and neither solves inlet conditions below the operating limits in the manual.
Before you buy
Why, and what it costs you
Next to the twenty-pint difference, the duct path can be the bigger factor
Published airflow with zero external static pressure is 185 CFM for E080 and 280 for E100. At 0.2 inches water column, it is 135 and 245. So in a finished home, a longer or more restrictive duct route can change how much the upgrade is worth in practice. Before choosing, a qualified installer should calculate the actual resistance. These numbers back a distinction in fan performance. They do not back a claim that E100 removes a particular amount more water through your ducts.
Where this comes from
The manufacturer's fan curve at matched pressure points, set against an existing duct route. Maximum design static is 0.4 for E080 and 0.6 for E100. No conversion of airflow to extraction is made.
The catch
AprilAire E100
The drain, temperature and filter-access requirements all remain with higher capacity. There is no onboard pump.
AprilAire E080
- Why pick it
- The verified load and duct calculation suit E080, and you prefer its current total installed price.
- Nothing in your installation would use the extra capacity or fan capability of E100.
- The catch
- Under duct resistance, its published airflow drops off more steeply. Look at the actual pressure, and do not assume that collar size proves compatibility.
AprilAire E100
- Why pick it
- Your design needs the stronger published fan curve or the higher rated moisture capacity.
- Having the same cabinet dimensions and collar size helps when you upgrade an installation.
- The catch
- The drain, temperature and filter-access requirements all remain with higher capacity. There is no onboard pump.
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What this page compares
AprilAire E080 vs E100 for an existing duct system, or a basement or attic installation, weighed on fan performance, service space and the limits of extra capacity.
Cabinet dimensions and duct collar size are shared by these adjacent AprilAire installation models. In practice, what matters is whether the installation needs E100 capacity and fan performance.
Which one fits
Pick the situations that sound like you
The duct calculation calls for the stronger fan curve
At the published matched pressure points, E100 keeps more airflow.
- AprilAire E080
- Caution
- AprilAire E100
- Better fit
E080 satisfies the design and comes with a better installed offer
The added E100 capability may go unused. Compare the real installed total.
- AprilAire E080
- Good
- AprilAire E100
- Good
Inlet air that is below the manual's conditions
The documented lower operating limits are the same for both.
- AprilAire E080
- Not suitable
- AprilAire E100
- Not suitable
The cabinet goes in, yet the filter has no room to slide out
Withdrawing the filter takes 15 inches on one side for both. Matching body dimensions do not get rid of that space requirement.
- AprilAire E080
- Not suitable
- AprilAire E100
- Not suitable
In practice
Differences you will notice
Next to the twenty-pint difference, the duct path can be the bigger factor
Published airflow with zero external static pressure is 185 CFM for E080 and 280 for E100. At 0.2 inches water column, it is 135 and 245. So in a finished home, a longer or more restrictive duct route can change how much the upgrade is worth in practice. Before choosing, a qualified installer should calculate the actual resistance. These numbers back a distinction in fan performance. They do not back a claim that E100 removes a particular amount more water through your ducts.
How we worked this out
The manufacturer's fan curve at matched pressure points, set against an existing duct route. Maximum design static is 0.4 for E080 and 0.6 for E100. No conversion of airflow to extraction is made.
Same cabinet, more capacity, but no fit for a sealed service gap
At 14 inches wide, 26 deep and 15 high for both bodies, E100 needs no larger bare opening than E080. Both also need 15 inches on one side to withdraw the filter. A unit that slides into place but cannot be serviced creates an access problem again and again. Before the matching dimensions are used to justify an upgrade, check the filter path, drain and collar connections with the surrounding storage or framing in place.
How we worked this out
Identical cabinet dimensions, set against the shared 15-inch filter withdrawal requirement. Whether it fits in place is kept apart from whether it can be transported.
Stepping up a size will not make a cold crawlspace suitable
Inlet air of 50 to 104 F and a dew point of at least 40 F are specified in both manuals. When the intended space falls below those conditions, buying E100 for its larger rating does not lift that shared limit. Both also call for a suitable gravity drain, or a separate pump when the water has to rise. Before either capacity makes sense, an installer may have to change the placement or the drainage. That matters most when a warm-room rating is being compared against a cool, lightly heated crawlspace.
How we worked this out
Inlet and drainage conditions both units share, set against a cold installation and an elevated disposal point. No prediction is made for anything below the operating envelope.
Option A
AprilAire, E080 standalone, E080Z package code, no separate controller or pump assumed
E080
The verified load and duct calculation suit E080, and you prefer its current total installed price.
- Best for
- The verified load and duct calculation suit E080, and you prefer its current total installed price.
Facts we checked
- Rated moisture removal: 80 pints at 80 F and 60% RH, zero external static
- Airflow at 0.2 in. water column: 135 CFM
- Airflow at 0.4 in. water column: 85 CFM
- Body and duct collars: 14 W × 26 D × 15 H inches, ten-inch collars
Option B
AprilAire, E100 standalone, E100Z package code, no casters or separate controller assumed
E100
Your design needs the stronger published fan curve or the higher rated moisture capacity.
- Best for
- Your design needs the stronger published fan curve or the higher rated moisture capacity.
Facts we checked
- Rated moisture removal: 100 pints under the same conditions
- Airflow at 0.2 in. water column: 245 CFM
- Airflow at 0.4 in. water column: 210 CFM
- Body and duct collars: Same dimensions and ten-inch collars
Spec by spec
Where they really differ
| Spec | AprilAire E080 | AprilAire E100 | In practice |
|---|---|---|---|
| Rated moisture removal | 80 pints at 80 F and 60% RH, zero external static | 100 pints under the same conditions | Do not read a 25% higher rating as a promise that the home dries 25% faster. |
| Airflow at 0.2 in. water column | 135 CFM | 245 CFM | More fan airflow is kept by E100 when the installation is resistive. |
| Airflow at 0.4 in. water column | 85 CFM | 210 CFM | Extraction ratings at those pressures are not what these fan points are. |
| Body and duct collars | 14 W × 26 D × 15 H inches, ten-inch collars | Same dimensions and ten-inch collars | No larger opening is forced by the body size, yet service and installation still have to be checked. |
| Inlet conditions | 50 to 104 F, minimum 40 F dew point | Same limits | More capacity does not turn E100 into a fix for a cold space. |
Trade-offs
What each pick costs you
With AprilAire E080
- Count the drain hose, optional pump and any external control as costs separate from the standard unit.
With AprilAire E100
- Inspection and sizing of the existing duct system are still required. Identical dimensions do not certify a drop-in replacement.
Decision guide
Before you buy
More moisture control without rebuilding the installation is what you want, but a larger daily rating cannot fix every duct or temperature problem.
What this page can’t tell you
- This page invents no price advantage for E080. Fan airflow does not equal drying speed, and the upgrade comparison includes no artificial two-way experiment switch.
By the numbers
What the data shows
What we found across the dehumidifiers we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| AprilAire E080 |
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| |
| AprilAire E100 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
AprilAire E080
The verified load and duct calculation suit E080, and you prefer its current total installed price.
Nothing in your installation would use the extra capacity or fan capability of E100.
See price & reviews on AmazonAprilAire E100
Your design needs the stronger published fan curve or the higher rated moisture capacity.
Having the same cabinet dimensions and collar size helps when you upgrade an installation.
See price & reviews on AmazonEach link opens in a new tab.
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