Skip to content
LearnMetrics
  • Home
  • General HVAC
    • ACH Calculator
    • EER To SEER Converter
    • SEER to EER Converter
    • EER To COP And COP To EER Converter
    • Coefficient Of Performance (COP)
    • CADR Rating
    • AFUE Rating For Furnaces
    • Understanding EER Rating
    • EER Chart For AC Units
    • SEER Rating
      • 16 SEER vs 14 SEER
    • HSPF Rating
    • MERV Rating
    • Watts To Amps Converter
    • Convert kW To Amps
    • BTU To kW Converter
    • BTU to Ton
    • Convert kVA To Amps
    • Wire Gauge Chart
  • Heating
    • Best Tankless Water Heaters
    • Best Tankless Gas Water Heaters
    • Best Electric Tankless Water Heaters
    • Best Garage Heaters
    • Best Space Heaters For Large Rooms
    • Best Pellet Stoves
    • Best Electric Fireplaces
    • Best Baseboard Heaters
    • Best Ventless Propane Heaters
    • Electric Furnace
    • Oil Furnace
    • Gas Furnace
  • Air Conditioning
    • Best Ductless Mini Split AC Units
      • Mr COOL DIY Mini Split Review
      • Best Dual Zone Mini Split Systems
      • Best 3 Zone Mini Split Systems
      • Best 4 Zone Mini Split Systems
      • Best 5 Zone Mini Split Systems
    • Best Mini Split Heat Pumps
    • Smallest AC Units
    • Types Of Air Conditioners
      • Best Through-The-Wall Air Conditioners
      • Best 5,000 BTU Air Conditioners
      • Best 8,000 BTU Air Conditioners
      • Best 10,000 BTU Air Conditioners
      • Best 12,000 BTU Air Conditioners
    • Best Portable Air Conditioners
      • Best Dual-Hose Portable AC Units
      • Cheapest Portable Air Conditioners
      • Zero Breeze Mark 2 Review
      • Battery-Powered Air Conditioner
    • Best Window AC Units
      • Best Casement/Vertical AC Units
      • Best Saddle Air Conditioners
    • BTU Calculator
    • AC Repair
      • AC Not Working
      • How To Recharge A Window AC Unit
      • R410A PT Chart
      • Thermostat Wiring
    • Best Evaporative Coolers
  • Air Quality
    • Best Air Purifiers
      • Alen BreatheSmart Air Purifier Reviews
      • Blueair Air Purifier Reviews
      • Coway Air Purifiers Reviews
      • Dyson Air Purifiers Reviews
      • Hathaspace Smart True HEPA Air Purifier Reviews
      • Honeywell Air Purifier Reviews
      • Levoit Air Purifiers Reviews
      • Molekule Review
      • Okaysou Air Purifier Reviews
      • Winix Air Purifier Reviews
    • Air Purifier Reviews
    • Best Air Curtains
    • Best Air Purifiers For Allergies
    • Best UV Air Purifiers For Mold
    • Best Air Purifiers For Smoke
    • Best Air Scrubbers
  • Humidity
    • Best Commercial Dehumidifiers
    • Best Dehumidifiers
      • 4+6 Best Whole-House Dehumidifiers (Ducted, Portable)
      • 4 Quietest Dehumidifiers (Best Bedroom Dehumidifiers): 52.1 dB Or Lower
    • Best Small Dehumidifiers
    • Big Humidifiers For Large Rooms
    • Best Humidifiers For Bedroom

Air Purifiers

Air Purifiers With UV Lights: Why UV-C Filter Alone Is Not Enough?

by

During the epidemic, air purifiers with UV lights have become wildly popular. It is well-known that UV-C lights are used to sterilize viruses and are used as disinfection agents. But does that necessarily mean that UV air purifiers eliminate viruses as well? It’s not all that simple. The use of ultraviolet germicidal irradiation (UVGI) in … Read more

Categories Air Purifiers Leave a comment

HEPA Filter H13 Vs H14: What Is The Key Difference Here?

by

As we know, H13 and H14 are two classifications of HEPA filters. The difference between H13 and H14 HEPA filters is simple; H14 HEPA filters are better due to higher efficiency and lower penetration rate. When differentiating between H13 vs H14, it is crucial that we also understand the implications of using H14 over H13 … Read more

Categories Air Purifiers, Ventilation 3 Comments

4 Absolute Quietest Air Purifiers On The Market (Below 52.1 dB)

by

Loud air purifiers are a bother. Nobody really likes that 60+ dB constant noise just because we want to breathe cleaner air. We are talking about air pollution vs noise pollution here. It is no surprise that everybody prefers quiet air purifiers for bedrooms, for example. Obviously, getting the quietest air purifier would be the … Read more

Categories Air Purifiers Leave a comment

Air Purifier Room Size Calculator: What Size Air Purifier Do You Need?

by

Air purifiers come in all sizes. How to know what size air purifier do you need? There is a way to tell if you need a 100 CFM, 200 CFM, 300 CFM air purifier, and so on (based on CADR rating and ACH). To help everybody (because the calculations can be a bit complex), we … Read more

Categories Air Purifiers Leave a comment

4 Smallest Air Purifiers For Small Rooms (Below 200 Sq Ft)

by

You have a small room. You need a small room purifier. That seems obvious enough. We see a lot of people getting an oversized air purifier for small 10×10 or 12×12 rooms. To help everybody out, we checked (spec-by-spec and filter-by-filter) which air purifiers are actually best for small rooms. That’s why we made a … Read more

Categories Air Purifiers Leave a comment

9 Absolute Best Air Purifiers For Dust Removal In 2023

by
best way how to keep your house dust free

Air purifiers are engineered to remove dust. Every air purifier is capable of capturing dust particulates. Obviously, there are air purifiers that are good at collecting dust and ones that are not as good. We are going to check are the very best air purifiers for dust removal. Here’s why these air purifiers for dust … Read more

Categories Air Purifiers, Air Quality Leave a comment

4 Best Dehumidifier And Air Purifier Combos (All-In-One Units)

by

We know dehumidifiers. We know air purifiers. What about dehumidifier and air purifier all in one unit? Having both a dehumidifier and air purifier combo is quite useful (in theory). With the best dehumidifier and air purifier combo you should get: All the benefits of a dehumidifier. That means you will be able to lower … Read more

Categories Air Purifiers, Dehumidifiers Leave a comment

5 Best Air Purifiers For Allergies In 2023 (+ H13 Medical-Grade HEPA Filters)

by

Airborne allergens. If you have an allergy or are prone to allergies, your best bet is to reduce airborne allergens such as dust, pollen, dust mites, and animal dander as much as possible. How do you do that (if it’s even possible)? The best way to reduce indoor air pollutants is by choosing the best … Read more

Categories Air Purifiers Leave a comment

4 Best Wall-Mounted Air Purifiers: Why Wall Is Best Placement?

by

Mounted on the wall. That’s the best position for an air purifier. Wall-mounted air purifiers have the best access to indoor air and utilize the existing airflow most thoroughly. With the best wall-mounted air purifier, you can increase the efficiency of the air purifier by as much as 20% (perfect placement). On top of that, … Read more

Categories Air Purifiers Leave a comment

Activated Carbon Air Filter: How Does A Carbon Filter Work? (Adsorption)

by
activated carbon filter in the making

A gram of activated carbon can have a surface area in excess of 5,400 sq ft, with 32,000 sq ft being readily achievable. (Wikipedia On Activated Charcoal) Pretty much every air purifier has an activated carbon filter. What does it do and what does “activated” actually mean? We’ll look into what an activated carbon filter … Read more

Categories Air Purifiers, Air Quality Leave a comment
Older posts
Page1 Page2 … Page5 Next →

Relevant HVAC Certificates:

energy efficiency guide

Follow us on Facebook:

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

 

Recent Posts

  • 90 Amp Wire Size Calculator + Chart (0-500 Feet Runway)
  • 125 Amp Wire Size Calculator + Chart (0-500 Feet Away)
  • 400 Amp Wire Size Calculator + Chart (0-500 Feet Runway)
  • 150 Amp Wire Size Explained: Calculator + Chart (0-500 Feet Away)
  • 80 Amp Breaker Wire Size + 80A Wire Size 0-500 Feet Away
  • 25 Amp Breaker Wire Size + 25A Wire Size 0-500 Feet Away
  • Wire Gauge For 15 Amp Service + 15 Amp Breaker Wire Size
  • 12V Voltage Drop Calculator + Chart (0-200 Feet Away)
  • How Long Do Generators Last? (Running Hours, Not Lifespan)
  • BTU/h To Horsepower Calculator + BTU/h To HP Chart (To 72,000 BTU/h)
  • Horsepower To BTU/Min: Convert HP To BTU Per Minute (Calc + Chart)
  • HP To BTU/hr: Horsepower To BTU For A/C (Calculator + Chart)
  • Tankless Water Heater Wire Size Calculator: What Gauge Wire (AWG)?
  • DC Wire Gauge Calculator: What Gauge Wire (12V, 24V, 48V)?
  • NEC 310.16 Table: Copper And Aluminum Wire Ampacity Chart
  • NEC 310.12 Table: Wire Sizes For 100-400 Amp Services (83% Rule)
  • kWh To Therms Calculator + Conversion Chart (1 kWh = 0.03412 Therms)
  • MMBTU To Therms Calculator + Chart (1 MMBTU = 10 Therms)
  • Therms To MMBTU Calculator + Chart (1 Therm = 1/10 MMBTU)
  • AWG To Circular Mils Chart (For 4/0 AWG To 20 AWG)
  • Tankless Water Heater Breaker Size Calculator: What Size Breaker?
  • How Much Does 500 Watts Cost Per Hour? ($0.05 – $0.22/h)
  • How Much Does 1000 Watts Cost Per Hour? (State-By-State Chart)
  • How To Convert Therms To kWh? Calculator + Chart (Natural Gas)
  • Average Gas Bill For 1-Bedroom Apartment: State-By-State Cost Analysis
  • Average Electricity Bill For 4 Person Household (Survey Analysis)
  • How Many kWh Per Day Is Normal? Average 1-6 Person Home kWh Usage
  • Gas Vs Electric Water Heater Monthly Cost Comparison (State-By-State)
  • Water Heating Costs For 1,2,3,4,5,6 Family Homes (State-By-State Analysis)
  • Electric Water Heating Cost, kWh Usage Per Month (State-By-State RECS Analysis)

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. As an Amazon Associate we earn from qualifying purchases.

  • Terms Of Use
  • Privacy Policy
  • Affiliate Disclaimer
  • About Us
  • Contact
© 2023 LearnMetrics • Built with GeneratePress