Optimal Humidity Level Maintenance

The comfort is a subjective feeling, therefore there is no certain mandatory grade of humidity indoors to be kept. Although, the average indicator that will comply with comfort and will not allow pathogens to grow may vary in the range of 35-50%.


Although, as we have mentioned above the perfect indicator depends on individual preferences, there is certain dependence between the temperature outside and moisture inside the house. Emergency Plumbing has prepared a short guide to help you with the determination of the humidity level, which will keep the place safe from microorganisms and create a cozy atmosphere. So below you may find a short table with these interconnections:

Temperature Outside (F)

Humidity Inside (%)

50 – and more

More than 50

20 – 50

More than 40

10 – 20

More than 35

0 – 10

More than 30

(-10) – (0)

More than 25

(-20) – (-10)

More than 20

(-20) – and less

More than 15



It is difficult to maintain the recommended humidity level manually. However, nowadays the problem is resolved by applying to whole-hone humidifiers/dehumidifiers. Such automatic systems work together with cooling/heating systems installed at your place and determine the necessary action regarding moisture in the air (adding or removal). Therefore, it is recommended to use a humidifier in the cold seasons when nature makes air dry and dehumidifier in hot periods when the air contains a high level of moisture.


Except obvious discomfort feelings caused by high humidity appeared at your homeplace it can also cause significant property damage, that majorly comes down to:

  • Growth and spread of mildew, microorganisms, mold, and fungi. As a result, you have the risk of breeding bacteria and viruses at your place, which poison air, cause different diseases and destructs house surfaces.

  • As was mentioned above poisoned indoors air may cause health worsening especially for people suffering from asthma and allergies.

  • Stuffiness. High humidity level leads to moisture accumulation at the surfaces, walls, and cells. As a result over time, the condensation built-up may appear. Except for the creation of uncomfortable conditions with hot temperatures and not fresh air, it affects air conditioning system productivity, so more energy will be spent to make the air circulate and cool off. More energy spent will cause a significant increase in amounts in utility bills.


At the same time, too dry air also has a couple of negative effects for homeowners and their property as well. So:

  • Dry indoor air is also harmful to asthmatics and people, who suffer from different allergies because it allows bacteria and viruses to move and spread faster. At the same time skin, hair and lips will also suffer in a dry environment and can lose their attractive image.

  • Dry air makes you feel colder than it is, by pulling moisture from the skin and leaving less body warmth. As a result, it leads to using more power for heating and significantly increases utility bills, while the appropriate level of humidity could help you avoid excessive costs and could help to feel more comfortable.

Your property can be damaged by dry air as well as health. Low humidity influences wooden surfaces and furniture. In a dry environment, they used to become dry too, being more fragile and risking to be cracked over time.

We are ready to help in this and other services. Just contact us 847-868-1800 and save your time and money with us!

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