Humidifier Size Calculator

Find the ideal humidifier size for your room. Enter your room dimensions and other factors to determine the best humidifier capacity in gallons or liters per day.

Room and Humidifier Details

The length of your room in feet
The width of your room in feet
The height of your ceiling in feet

List of the Top 5 Best Humidifier:

# Image Product Link
1 LEVOIT Humidifiers for Bedroom Home, Smart Warm and Cool Mist Air Humidifier for Large Room, Auto Customized Humidity, Fast Symptom Relief, Easy Top Fill, Essential Oil, Quiet, OasisMist4.5L, White LEVOIT Humidifiers for Bedroom Home, Smart Warm and Cool Mist Air Humidifier for Large Room, Auto Customized Humidity, Fast Symptom Relief, Easy Top Fill, Essential Oil, Quiet, OasisMist4.5L, White View on Amazon
2 LEVOIT Smart Humidifiers for Bedroom Large Room Home,(6L) Cool Mist Top Fill Essential Oil Diffuser for Baby & Plants,Smart App & Voice Control, Rapid Humidification & Auto Mode-Quiet Sleep Mode, Gray LEVOIT Smart Humidifiers for Bedroom Large Room Home,(6L) Cool Mist Top Fill Essential Oil Diffuser for Baby & Plants,Smart App & Voice Control, Rapid Humidification & Auto Mode-Quiet Sleep Mode, Gray View on Amazon
3 LEVOIT LV600S Smart Warm and Cool Mist Humidifiers for Home Bedroom Large Room, (6L) 753ft² Coverage, Quickly & Evenly Humidify Whole House, Easy Top Fill, App & Voice Control - Quiet Sleep Mode LEVOIT LV600S Smart Warm and Cool Mist Humidifiers for Home Bedroom Large Room, (6L) 753ft² Coverage, Quickly & Evenly Humidify Whole House, Easy Top Fill, App & Voice Control - Quiet Sleep Mode View on Amazon
4 BLUEAIR Premium Smart Humidifier for Large Rooms, Bedrooms, Better Sleep with Evaporative Invisible Mist Tech, Auto Humidify, Easy Top Fill, Smart Control with App, Touchscreen, 3.5L Tank for 48 hours BLUEAIR Premium Smart Humidifier for Large Rooms, Bedrooms, Better Sleep with Evaporative Invisible Mist Tech, Auto Humidify, Easy Top Fill, Smart Control with App, Touchscreen, 3.5L Tank for 48 hours View on Amazon
5 LEVOIT Top Fill Humidifiers for Bedroom, 2.5L Tank for Large Room, Easy to Fill & Clean, 28dB Quiet Cool Mist Air Humidifier for Home Baby Nursery & Plants, Auto Shut-off and BPA-Free for Safety, 25H LEVOIT Top Fill Humidifiers for Bedroom, 2.5L Tank for Large Room, Easy to Fill & Clean, 28dB Quiet Cool Mist Air Humidifier for Home Baby Nursery & Plants, Auto Shut-off and BPA-Free for Safety, 25H View on Amazon

Understanding Humidifier Sizing

Choosing the right size humidifier is important for ensuring that your room maintains a comfortable level of humidity. If the humidifier is too small, it will struggle to add enough moisture to the air, leading to discomfort or worsening health issues. On the other hand, an oversized humidifier may result in excess moisture, leading to dampness, mold growth, and an uncomfortable atmosphere.

How to Calculate Humidifier Size

Humidifiers are rated based on the amount of moisture they can add to the air in a 24-hour period, typically measured in gallons or liters. To calculate the appropriate size for your room, we need to consider various factors such as the size of the room, the desired humidity level, and the room's environment. Here's a step-by-step guide:

Factor Adjustment
Base Calculation 0.5 gallons per 100 square feet of room area
Ceiling Height Increase by 10% for every foot above 8 feet
Desired Humidity Level Increase by 20% for high humidity, 10% for moderate humidity
Room Type Increase by 10% for basements or kitchens

Common Humidifier Sizes

Here are some standard humidifier sizes and their typical applications:

Gallons per Day (GPD) Room Size (square feet) Typical Use
0.5 100 - 300 Small rooms or offices
1.0 300 - 500 Medium-sized rooms like bedrooms
1.5 500 - 800 Large rooms like living rooms
2.0+ 800+ Extra large rooms or open spaces

Frequently Asked Questions

What happens if I choose the wrong humidifier size?

Choosing the wrong size humidifier can have various consequences. If it's too small, it will be ineffective, leaving the air too dry. If it's too large, it may over-humidify your room, potentially leading to mold, dampness, and discomfort.

How do I measure my room for a humidifier?

To determine the right size, measure the length and width of your room in feet and calculate the area in square feet. Don't forget to measure the ceiling height, as higher ceilings may require larger humidifiers. Finally, consider the room's type and the level of humidity you desire.

Can I use this calculator for whole-house humidifiers?

This calculator is designed for room-sized humidifiers. For whole-house humidifiers, consult with an HVAC professional who can provide accurate sizing based on your home's dimensions and specific needs.

What is the difference between gallons and liters?

Gallons and liters are both units of measurement for volume. 1 gallon is approximately equal to 3.785 liters. When choosing a humidifier, both units are commonly used to measure the capacity of moisture output, and you can convert between them as needed.