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Air Purifier Reviews

Medify MA-25 Review: What Does Spec-By-Spec Analysis Tell Us?

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size of medify ma 25 air purifier compared to a table

Reviewing Medify MA-25 is quite interesting. What you should expect from these medium-size room air purifiers is some basic CADR, HEPA filter, and decent air pollutant removal rates. Of course, the price tag of such a unit should also be lower than $250. To adequately check if Medify MA-25 is any good, you have to … Read more

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Medify Air MA-15 Review: Is Best-Selling Rank Actually Deserved?

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medify ma 15 review and assessment

How good is Medify MA-15 air purifier? This is the main thing you need to know before you buy any air purifier. Medify Air is considered one of the best air purifier brands in the industry; today we will check how well does their small Medify MA-15 model perform. This will include a spec-by-spec analysis. … Read more

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Medify Air MA-14 Review: How Does Small Air Purifier Perform?

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Medify MA-14 is one of the smallest Medify air purifiers. As you know, the bigger Medify air purifiers are one of the best air purifiers on the market with huge CADR ratings. How well do smaller models like Medify Air MA-14 perform? That’s what we went out to check out with a spec-by-spec analysis. In … Read more

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Medify MA-50 Review: Is It Really That Good? (2023)

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Is Medify Air MA-50 really that good? This is precisely what we are going to look at. Obviously, Medify air purifiers are one of the best on the market. We are going to review how well does Medify MA-50 perform. This will include a precise spec-by-spec analysis and comparison, including checking the advanced H13 filters, … Read more

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Alen BreatheSmart FIT50 Air Purifier 2023 Review (4.7/5)

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If we’re honest, Alen BreatheSmart Fit50 is the only air purifier from the original BreatheSmart series that managed the impossible: Bring the maximum noise levels (at Turbo Speed) down below 50 dB. Alen BreatheSmart air purifiers are designed to be whisper quiet; perfect for bedrooms. That was the idea, anyway. The reality is that both … Read more

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Alen BreatheSmart Classic Large Room Air Purifier (2023 Review)

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alen breathesmart classic review and efficiency specifications like cadr rating

The ‘Classic’ model is one of the 3 original air purifiers in the sleep-friendly Alen BreatheSmart series. It is commonly referred to as Alen BreatheSmart Classic large room air purifier for one simple reason: It’s the biggest of the 3 original Alen BreatheSmart models, most appropriate for large rooms. In this review of the Alen … Read more

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Alen BreatheSmart 75i Review: Arguably #1 Air Purifier In 2023

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detailed review of alen breathesmart 75i air purifier

There are literally 100s of air purifier brands and 1000s of models out there. Arguably, among all these, the Alen BreatheSmart air purifiers are the single best air purifier series on the market. Alen BreatheSmart 75i is the biggest Alen BreatheSmart air purifier (achieving 2 ACH even in 1,300 sq ft large spaces). This quiet … Read more

Categories Air Purifier Reviews 2 Comments

IQAir Air Purifier Review: How Good Is This Swiss-Made Wonder?

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assessment of iqair healthpro plus air cleaner for allergies

0.003 microns. Among everything that is special about the Swiss-made IQAir HealthPro Plus air purifier, this number is at the top. It’s the reason why IQAir HealthPro Plus is often called the ‘#1 Rated Air Purifier For Allergies And Asthma‘. The width of a single human hair is about 75 microns. As we’ll see in … Read more

Categories Air Purifier Reviews, Air Purifiers 3 Comments

Airific Air Purifier Review: New 2020 Personal Air Purifier

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airific air purifier review of a handheld device

Airific air purifier is one of the newest personal air purifiers, launched in 2020. What is more, Airific is a completely new air purifier brand. That means we don’t have a viable track record, test-and-tried previous Airific air purifier, and so on. In short, with the new brands, it’s smart to be a bit careful. … Read more

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Alen BreatheSmart FLEX Review: Quiet, Capable, For Bedroom (4.7/5)

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assessment of alen beathesmart flex air purifier with coverage area, cadr rating, noise levels

Alen BreatheSmart FLEX is the 1st model in the BreatheSmart series. Alen, an air purifier producer with extraordinary renown, offers 5 BreatheSmart models. BreatheSmart series is designed not only to improve indoor air quality. The main goal of Alen BreatheSmart FLEX is to improve sleeping quality (as a consequence of breathing higher quality air while … Read more

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HVAC metrics:

SEER = (1 × EER100% + 42 × EER75% + 45 × EER50% + 12 × EER25%)/100

EER = BTUcooling/W

HSPF = BTUheating/W

COP = Q (useful heat)/W (input work)

ACH = CFM x 60/Area x Heightceiling

Total Heat (BTU/hr.) = 4.5 x CFM x Δh (std. air)

Sensible Heat (BTU/hr) = 1.1 x CFM x Δt (std. air)

Latent Heat (BTU/hr) = 0.69 x CFM x Δgr. (std. air)

1 HP = 746 Watts

1 kW = 3413 BTU

 

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