Air Quality research

Alen BreatheSmart 45i: Published CADR, Noise, and Room Fit

Alen BreatheSmart 45i specifications, source notes, and buying context based on published product information.

Written by BenchPicked Editorial Team · Sources checked May 16, 2026

Decision research map for Alen BreatheSmart 45i: Published CADR, Noise, and Room Fit based on published information
BenchPicked decision research: published facts, constraints, alternatives, and source records.

Decision answer

Bottom line

Alen BreatheSmart 45i lists a smoke CADR of up to 208 CFM alongside a room-size claim of 800 sq ft. Use the CADR, not the room-size claim alone, to compare cleaning rates; check the operating setting and replacement-filter cost.

For
people choosing a room air cleaner for a defined room and operating routine
Decision
decide whether Alen BreatheSmart 45i fits the intended job and purchase constraints
Context
matching cleaned-air delivery, noise, filter upkeep and room conditions

Decision matrix

Read each published value in the context of the decision it can actually support.

Alen BreatheSmart 45i decision matrix
FactorPublished informationHow to use it
Categoryair purifierUse the exact published value to compare like-for-like products; an omitted value remains unknown.
ModelBreatheSmart 45iUse the exact published value to compare like-for-like products; an omitted value remains unknown.
Coverage Area Sqft800 sq ftUse this to match the documented capacity to the room or task; do not compare an unlabeled maximum claim as equivalent.
Cadr Smokeup to 208 CFMUse this to match the documented capacity to the room or task; do not compare an unlabeled maximum claim as equivalent.
Noise Level Db23-49 dBCompare the level together with the operating setting and distance, especially for bedroom or close-range use.
Dimensions15 x 8.5 x 25 inCheck this against the installation, storage or carrying constraint before ordering.
Weight15.0 lbCheck this against the installation, storage or carrying constraint before ordering.

Claim and evidence record

source attributed

Cadr Dust: up to 208 CFM

This field is attributed to the cited standards or certification directory and remains limited to its listed model and scope.

AHAM Verifide room air cleaner directory

source attributed

Cadr Pollen: up to 208 CFM

This field is attributed to the cited standards or certification directory and remains limited to its listed model and scope.

AHAM Verifide room air cleaner directory

When another option is the better fit

A higher-CADR purifier

Choose this when the room is larger or faster air cleaning matters more than size.

A quieter compact purifier

Choose this when night use and close placement matter more than peak airflow.

Source control or ventilation

Choose this when the pollutant source can be removed instead of filtered.

Decision support

Fit and ownership checks

Fits when

  • Readers matching this audience: people choosing a room air cleaner for a defined room and operating routine
  • Decisions that require this task: decide whether Alen BreatheSmart 45i fits the intended job and purchase constraints
  • Use in this stated context: matching cleaned-air delivery, noise, filter upkeep and room conditions

Complete before comparing total cost

  • Replacement-part price, availability, and expected interval
  • Electricity cost at the expected operating setting and local tariff
  • Current device price, shipping region, and availability
  • Required accessories, consumables, or paid services

Sources used for this decision

Evidence boundary: this module compares cited published information. It does not add first-hand measurements or infer results outside the stated source conditions.

Decision data

Is Alen BreatheSmart 45i a good fit for my room, noise limit, and ownership budget?

Alen BreatheSmart 45i lists a smoke CADR of up to 208 CFM alongside a room-size claim of 800 sq ft. Use the CADR, not the room-size claim alone, to compare cleaning rates; check the operating setting and replacement-filter cost.
Category
air purifier
Model
BreatheSmart 45i
Coverage Area Sqft
800 sq ft
Cadr Smoke
up to 208 CFM

Evidence boundary

Published specifications are attributed to their named sources and are not BenchPicked laboratory measurements.

Air purifier specifications and ownership-cost datasetVersion 2026.09.24. Normalized CADR, room-size, noise, power, filtration, and evidence-status fields for the current BenchPicked air-purifier set.

Current buying option

Check the seller terms before ordering

Use the evidence and limitations above to decide whether this product fits. Price, availability, shipping, and return terms can change on the seller page.

Check price on Amazon Seller: Amazon (paid link) We may earn a commission from Amazon.

Research details

Specification basis

According to manufacturer specifications and published source data, Alen BreatheSmart 45i is an air purifier. CADR values are dust up to 208 CFM, smoke up to 208 CFM, and pollen up to 208 CFM. Coverage is listed as 800 sq ft. Filter type is True HEPA filter options.

Source boundaries

Alen BreatheSmart 45i is described from Alen official BreatheSmart 45i product information, AHAM Verifide room air cleaner directory.

Ownership cost and purchase terms

For Alen BreatheSmart 45i, carry Air Quality Sensor, Auto Mode, Cadr Dust, Cadr Pollen into the ownership comparison.

Alen BreatheSmart 45i comparison snapshot

Alen BreatheSmart 45i lists smoke, dust, and pollen CADR as up to 208 CFM / up to 208 CFM / up to 208 CFM; stated coverage is 800 sq ft; and the published noise range is 23-49 dB.

Published specs

Source-attributed specification table
FieldValueSource basis
Air Quality Sensorcolor-coded air quality sensorSource Attributed (view source)
Auto ModeyesSource Attributed (view source)
BrandAlenSource Attributed (view source)
Cadr Dustup to 208 CFMSource Attributed (view source)
Cadr Pollenup to 208 CFMSource Attributed (view source)
Cadr Smokeup to 208 CFMSource Attributed (view source)
Categoryair purifierSource Attributed (view source)
Coverage Area Sqft800 sq ftSource Attributed (view source)
Dimensions15 x 8.5 x 25 inSource Attributed (view source)
Filter TypeTrue HEPA filter optionsSource Attributed (view source)
ModelBreatheSmart 45iSource Attributed (view source)
Noise Level Db23-49 dBSource Attributed (view source)
Power Consumption W50 WSource Attributed (view source)
Price Range$$$Source Attributed
Weight15.0 lbSource Attributed (view source)

Buying options

Approved affiliate buying links for Alen BreatheSmart 45i: Published CADR, Noise, and Room Fit
StorePriceAction
AmazonCheck current price on AmazonCheck price on Amazon*
* Affiliate links - prices may vary. Last checked: Sep 26, 2026.

Source notes

Questions

What CADR values are published for Alen BreatheSmart 45i?

Published CADR values for Alen BreatheSmart 45i: dust up to 208 CFM, smoke up to 208 CFM, pollen up to 208 CFM.

What room coverage is listed for Alen BreatheSmart 45i?

The selected sources list coverage for Alen BreatheSmart 45i as 800 sq ft.

What filter type does Alen BreatheSmart 45i use?

The selected sources describe Alen BreatheSmart 45i with True HEPA filter options.

Before you buy

Recheck fit and current terms

Confirm Alen BreatheSmart 45i: Published CADR, Noise, and Room Fit's model, included items, delivery, return policy, and any recurring costs before checkout.

Check price on Amazon Seller: Amazon (paid link) We may earn a commission from Amazon.

How BenchPicked separates published facts, analysis, and evidence limits