Is it normal for AC vents to drip condensation?

• <div><p>No, it’s not normal for AC vents to drip condensation. A sweating AC vent is a sign of something wrong and can lead to issues like <a href="https://www.angi.com/articles/moisture-leads-air-duct-rusting.htm">air duct rust</a> or mold growth. Your HVAC unit might not be working efficiently because of a dirty filter or clogged ducts. Alternatively, your ductwork might not have adequate insulation, which allows the cool air in the ducts to meet the humid air outside, causing condensation. </p></div>

Get matched with top air duct cleaners in Mountain Iron, MN

Q: Is it safe to run an AC with mold?

• <div><p>Is mold in an air conditioner dangerous? Running an air conditioner with mold isn&rsquo;t safe because it can spread harmful mold spores throughout your home. These spores may cause respiratory problems, allergies, or aggravate asthma in household members and guests. If you suspect there is mold hiding in your air conditioner, it&rsquo;s best to stop using the HVAC system until the mold is cleaned to avoid health risks and further contamination.</p></div>

Q: How often should evaporator coils be cleaned?

• <div><p>Your evaporator coils should be cleaned at least <b>once per year</b>. However, the frequency of cleaning depends on your air conditioning system age and performance. If your system is old, keeps breaking down, or continues to underperform, you should have your evaporator coils cleaned twice per season. </p><p>Your home&rsquo;s location also plays a central role. For example, if you live in climates with a lot of moisture, humidity, wind, dirt, or dust, you&rsquo;ll likely need to have your coils cleaned more than once yearly. </p></div>

Q: Is it normal for AC vents to drip condensation?

• <div><p>No, it&rsquo;s not normal for AC vents to drip condensation. A sweating AC vent is a sign of something wrong and can lead to issues like <a href="https://www.angi.com/articles/moisture-leads-air-duct-rusting.htm">air duct rust</a> or mold growth. Your HVAC unit might not be working efficiently because of a dirty filter or clogged ducts. Alternatively, your ductwork might not have adequate insulation, which allows the cool air in the ducts to meet the humid air outside, causing condensation. </p></div>

Q: How long does skunk smell last in a house?

• <div><p>A mild skunk smell in your house can last up to three weeks, dissipating over time with proper ventilation. However, if you leave stronger smells untreated, they can last for months or years, becoming more difficult to remove the longer they sit. This is especially true of odors that have seeped into fabrics such as clothing or furniture or those in your pets&rsquo; fur.</p></div>

Q: Is it mold or dust in my air vent?

• <div><p>You normally won&rsquo;t see any dust or mold actively floating out of your vent, but you might notice your vent looks dirty. Mold will cling to the sides and collect almost like black soot. Dust will look, well, dusty, but there will usually be a heavy buildup so expect thick gray layers on the bottom and sometimes the sides of the vent. <b>If you suspect you have mold in your vents, call a professional immediately. </b></p></div>

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Verified Reviews for Air Duct Cleaning pros in Mountain Iron, MN

*The Angi rating for Air Duct Cleaning companies in Mountain Iron, MN is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Duct Cleaning needs.

*The HomeAdvisor rating for Air Duct Cleaning companies in Mountain Iron, MN is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Duct Cleaning needs.

Last update on December 05, 2025

Reviewed in June 2024
The workers are fantastic. Everyone was so pleasant. They clean up after themselves. They all work so well together.
Leigh Thomas Construction
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Reviewed in February 2023
Reliable and on-time. Fast and quality painting. Cleaned-up afterwards. We asked and appreciated their opinions on the paint colors we had chosen and they worked with us to obtain the visual results that we wanted. Really liked working with this company! Very professional and kind. Yes, will...
May Painting
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Reviewed in April 2022
Professional, timely service cleaning all of the heating ducts and cold air return throughout my house.
Warwas Heating & Cooling, LLC
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Reviewed in March 2017
Ben P. arrived on time. Assessed the situation and set out to unclog the pipe. It didn't take long before the pipe was clear and everything was working fine. Ben was polite, explained the situation to us. He left the kitchen clean. Yes we would use again.
Weld & Sons Plumbing
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Reviewed in January 2017
Haven't had any troubles since. So went very well. Stay dry had taken there time in a quick and quality for tearing up my basement do to the type of job. Which I expected. They did there best to clean up and didn't leave nothing behind.
stay-dry
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Reviewed in February 2016
I contacted the company that made the boiler and sent pictures of how the fresh air intake and exhaust had been installed. They sent me diagrams as to how they should be installed. Randalls had installed them in reverse of how they should have been installed. When the service guys came several...
Randall Brothers Heating & Air Conditioning Inc
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Reviewed in May 2012
He did a fast good job and did not charge us much. I was expecting to pay about a thousand bucks and it was only two hundred. We have a huge tree in our yard and it was touching the roof. It was just huge and he needed to cut it way down and he did. When he came we left to go out to eat. We were...
CARPENTER BROTHERS TREE & STUMP REMOVAL
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Reviewed in August 2011
We decided on a Mini Split because of our situation. No duct work in the house and we were very familiar with Mini Split AC units having lived in Asia for three years. They are very efficient units. We contacted Summit Mechanical at a Home Show in Duluth and were very impressed with the Fujtsu...
Summit Mechanical Service Inc
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Find Air duct cleaners in Mountain Iron

Second Nature (Formerly FilterEasy)

5.00(

)

Second Nature (Formerly FilterEasy)

5.00(

)

Customers say: Quick response

Recommended by 100% of Angi customers

Second Nature, formerly FilterEasy, empowers its members to achieve long-lasting, sustainable home wellness with convenient subscription plans, including high-quality home air filters and refrigerator water filters. We exist to simplify home wellness, to make it so easy and convenient that it becomes second nature. Learn about our products and subscribe at www.SecondNature.com/home.

Global Plasma Solutions

5.00(

)

Global Plasma Solutions

5.00(

)

Customers say: Quality work

Recommended by 100% of Angi customers

Global Plasma Solutions is a manufacturing company that sells air purification systems primarily into the commercial and residential markets. Home owners can benenfit from our systems as they are easily adapted to any HVAC system. Go to www.gpshvac.com to find a certified contractor near you to have one installed within your home.

Environmental Testing & Research Laboratories, Inc

4.85(

347

)

Environmental Testing & Research Laboratories, Inc

4.85(

347

)

Customers say: True professional

Recommended by 93% of Angi customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

"as advertised"

Nancy C on July 2018

Air Duct Cleaning questions, answered by experts

Is mold in an air conditioner dangerous? Running an air conditioner with mold isn’t safe because it can spread harmful mold spores throughout your home. These spores may cause respiratory problems, allergies, or aggravate asthma in household members and guests. If you suspect there is mold hiding in your air conditioner, it’s best to stop using the HVAC system until the mold is cleaned to avoid health risks and further contamination.

Your evaporator coils should be cleaned at least once per year. However, the frequency of cleaning depends on your air conditioning system age and performance. If your system is old, keeps breaking down, or continues to underperform, you should have your evaporator coils cleaned twice per season.

Your home’s location also plays a central role. For example, if you live in climates with a lot of moisture, humidity, wind, dirt, or dust, you’ll likely need to have your coils cleaned more than once yearly.

No, it’s not normal for AC vents to drip condensation. A sweating AC vent is a sign of something wrong and can lead to issues like air duct rust or mold growth. Your HVAC unit might not be working efficiently because of a dirty filter or clogged ducts. Alternatively, your ductwork might not have adequate insulation, which allows the cool air in the ducts to meet the humid air outside, causing condensation.

A mild skunk smell in your house can last up to three weeks, dissipating over time with proper ventilation. However, if you leave stronger smells untreated, they can last for months or years, becoming more difficult to remove the longer they sit. This is especially true of odors that have seeped into fabrics such as clothing or furniture or those in your pets’ fur.

You normally won’t see any dust or mold actively floating out of your vent, but you might notice your vent looks dirty. Mold will cling to the sides and collect almost like black soot. Dust will look, well, dusty, but there will usually be a heavy buildup so expect thick gray layers on the bottom and sometimes the sides of the vent. If you suspect you have mold in your vents, call a professional immediately.

The Mountain Iron, MN homeowners’ guide to air duct cleaning services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

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•
Mar 14, 2025Mar 14, 2025
How to Prepare for Air Duct Cleaning in 6 Easy Steps
Preparing for air duct cleaning will make the job go much smoother. Learn about the steps you should take before a pro starts cleaning your ducts.
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•
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Can Dirty Air Ducts Make You Sick? The Dirty Truth About HVAC Ductwork
Can dirty air ducts make you sick? Find out how dirty HVAC ductwork impacts indoor air quality and can even affect your health.
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•
Mar 6, 2025Mar 6, 2025
Does Air Duct Cleaning Help Get Rid of Bad Smells?
If you suspect foul odors are coming from your air ducts, know that air duct cleaning does not always help with smell. Consult this guide to determine the best solution.