Do whole-house humidifiers cause mold in ducts?

• <div><p>Damp air from a humidifier can cause mold in ducts if it raises the air's humidity level too high for the duct system to handle or malfunctions, but it’s not a normal occurrence. To avoid mold trouble, set the humidistat to between 30% and 35% and inspect it often to ensure accuracy.</p></div>

What causes musty smells?

• <div><p>Figuring out why you have a musty smell in your house is the first step to getting rid of it. <a href="https://www.angi.com/articles/mold-vs-mildew.htm">Mold or mildew</a> is most likely causing the unpleasant odor. People use these terms interchangeably, but they’re actually different.</p><p>Mold is a fungus that loves to grow in moist, humid places. It’s typically black or green and has a raised, uneven texture. Stay vigilant for <a href="https://www.angi.com/articles/signs-mold-might-be-growing-your-home.htm">signs mold may be growing in your home. </a></p><p>You’ll find mildew growing on your shower walls and in your bathroom’s nooks and crannies. It’s a specific type of mold that grows flat. Mildew is usually white, gray, or yellow.</p></div>

Get matched with top air duct cleaners in Jamaica, VT

Q: What happens if you don't clean air ducts?

• <div><p>If air ducts aren&rsquo;t regularly cleaned and maintained, your HVAC system will circulate dirty air through your home, affecting the air you breathe. Also, trapped moisture can lead to mildew and mold growth, particularly in regions with high humidity. </p></div>

Q: How long does an air duct cleaning service take?

• <div><p>Professional air duct cleaning takes two to five hours, depending on the size of your home and the extent of the cleaning. The ductwork in standard homes with total square footage of 1,500 to 2,000 will take closer to two hours. Larger homes with extensive return and supply ductwork&mdash;often over 3,000 square feet&mdash;can push up to five hours. Keep in mind that related cleanings and repairs in your HVAC system will add to this total and may require two visits.</p></div>

Q: What actions are recommended if poor air quality is detected?

• <div><p>Professionals suggest through ventilation, source removal, or filtration systems.</p></div>

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Verified Reviews for Air Duct Cleaning pros in Jamaica, VT

*The Angi rating for Air Duct Cleaning companies in Jamaica, VT 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 Jamaica, VT 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 November 10, 2025

Reviewed in June 2025
Our neighbor is using them to make a patio, soon our home filled with white dust and it coveted our lawn. The workers informed us they were not using any water or dust suppression methods as required by OSHA. We told them we were concerned about our exposure to silica, a cause of potentially...
ATD Landscaping LLC
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Reviewed in October 2024
Do not work with LESA. I am the first to write a positive review and try my best to avoid negative, but LESA's negligence has cost my family $26,000 in unexpected repairs after our home purchase. Choose a different inspector. First, our entire basement ceiling/floor system was contaminated...
LESA Inspections
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Reviewed in March 2024
Great group of professionals, I would highly recommend them to anyone in need of tree work and clean up.
Sky High Tree Service
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Reviewed in December 2022
Quality couple. Responsible. Reliable. Pleasant. And outstanding professional cleaning. Highly recommend Annas Cleaning!
Northshire Cleaning
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Reviewed in July 2013
Carmine's just finished a job at our home replacing two air conditioning systems (outside compressors as well as air handlers). Here were the pros and cons: PROs --Best price of the 3 quotes I obtained --Salesman (Pete) was terrific. Knowledgeable, professional, friendly, no-pressure,...
Carmine's Plumbing, Heating & AIr Conditioning
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Reviewed in November 2012
John was very punctual, efficient, and very easy to work with. He cleaned up after himself, and left the job site in good condition.
John Clark Electric
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Reviewed in December 2008
Terrific experience. Yuri and his colleague are highly professional. They called to let us know they were running slightly late, did a walk-through of the house, inserted a camera to show us the amount of muck in the ducts, and got to work. Yuri's colleague removed the registers and washed them...
PYM Llc
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Reviewed in June 2008
Joel came on time and was well versed in radon mitigation. He was quick, efficient and clean. The system was installed correctly and functions well.
MOUNTAINVALLEY BUILDING INSPECTIONS INC
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Find Air duct cleaners in Jamaica

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.

Cleanway Services

3.00(

)

Cleanway Services

3.00(

)

Customers say: Quick response

41 years of experience

Cleanway Services provides comprehensive restoration services for residential and commercial structures damaged as a result of fire, smoke, and/or water. Our highly skilled and IICRC certified technicians are able to respond to your damage needs in Vermont and New Hampshire within hours. No matter how big or small the damage is, we are committed to restoring your home or business. In addition we offer green carpet cleaning and janitorial services to keep your home clean and free of allergens and odors. If you drop off your rug at our St Johnsbury location we can clean that too!

"BEN &his STAFF BEST CLEANING SERVICES, CLEANWAY SERVICES, PROFESSIONAL, EXCELLENT CUSTOMER SERVICE &PERFORMANCE SERVICES.HIGHLY RECOMMENDED A++++I ONLY RECOMMEND CLEANWAY SERVICES. We moved to this 4yr old home NH 2015 and all been sick even RESCUE ANIMALS. Jan2018, I was incapacitated, dizzy, in&out çonsciousness thinking flu???my rescue CATS howling PAWING acting like never b4.I already am disabled hospital bedridden and my bedroom above oil FURNACE room.We didn't know but FURNACE FIRE oil soot CARBON MONOXIDE (none of detectors went off BC dummies,electric not REAL wires).CLEANWAY SERVICES,ABSOLUTE RESOURCES (MOLD),yes mold SEVERAL all over&affected our health detrimental 2us&animals, LIBERTY MUTUAL EXCELLENT. I KNOW MOLD NOT COVERED BY INSURANCE yet everything with OIL SOOT had MOLD. Despite central exchanger, central ionizer,12 HEPA Uv air filtration units for home 2000sqft, several MOLDS DESTROYING 38yrs of memories and collectibles can't replace.BEN&STAFF AT CLEANWAY SERVICES ALWAYS ACCOMODATING PROFESSIONAL SUPERB SERVICES.DONT HIRE ANYONE BUT CLEANWAY SERVICES esp.Ben &staff VT"

Toula G on April 2018

"BEN &his STAFF BEST CLEANING SERVICES, CLEANWAY SERVICES, PROFESSIONAL, EXCELLENT CUSTOMER SERVICE &PERFORMANCE SERVICES.HIGHLY RECOMMENDED A++++I ONLY RECOMMEND CLEANWAY SERVICES. We moved to this 4yr old home NH 2015 and all been sick even RESCUE ANIMALS. Jan2018, I was incapacitated, dizzy, in&out çonsciousness thinking flu???my rescue CATS howling PAWING acting like never b4.I already am disabled hospital bedridden and my bedroom above oil FURNACE room.We didn't know but FURNACE FIRE oil soot CARBON MONOXIDE (none of detectors went off BC dummies,electric not REAL wires).CLEANWAY SERVICES,ABSOLUTE RESOURCES (MOLD),yes mold SEVERAL all over&affected our health detrimental 2us&animals, LIBERTY MUTUAL EXCELLENT. I KNOW MOLD NOT COVERED BY INSURANCE yet everything with OIL SOOT had MOLD. Despite central exchanger, central ionizer,12 HEPA Uv air filtration units for home 2000sqft, several MOLDS DESTROYING 38yrs of memories and collectibles can't replace.BEN&STAFF AT CLEANWAY SERVICES ALWAYS ACCOMODATING PROFESSIONAL SUPERB SERVICES.DONT HIRE ANYONE BUT CLEANWAY SERVICES esp.Ben &staff VT"

Toula G on April 2018

HOME MAINTENANCE ASSOC

No reviews yet

HOME MAINTENANCE ASSOC

No reviews yet

53 years of experience

Established in 1972, hma is the longest standing professional cleaning and restoration company in the area. we are a small sized business with 3 employees but have a vast network available to be able to provide emergency service needed. We are an IICRC certified firm.

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

If air ducts aren’t regularly cleaned and maintained, your HVAC system will circulate dirty air through your home, affecting the air you breathe. Also, trapped moisture can lead to mildew and mold growth, particularly in regions with high humidity.

Damp air from a humidifier can cause mold in ducts if it raises the air's humidity level too high for the duct system to handle or malfunctions, but it’s not a normal occurrence. To avoid mold trouble, set the humidistat to between 30% and 35% and inspect it often to ensure accuracy.

Professional air duct cleaning takes two to five hours, depending on the size of your home and the extent of the cleaning. The ductwork in standard homes with total square footage of 1,500 to 2,000 will take closer to two hours. Larger homes with extensive return and supply ductwork—often over 3,000 square feet—can push up to five hours. Keep in mind that related cleanings and repairs in your HVAC system will add to this total and may require two visits.

Figuring out why you have a musty smell in your house is the first step to getting rid of it. Mold or mildew is most likely causing the unpleasant odor. People use these terms interchangeably, but they’re actually different.

Mold is a fungus that loves to grow in moist, humid places. It’s typically black or green and has a raised, uneven texture. Stay vigilant for signs mold may be growing in your home.

You’ll find mildew growing on your shower walls and in your bathroom’s nooks and crannies. It’s a specific type of mold that grows flat. Mildew is usually white, gray, or yellow.

Professionals suggest through ventilation, source removal, or filtration systems.

The Jamaica, VT 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

Deane Biermeier
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Oct 28, 2025Oct 28, 2025
How Much Does a Whole-House Air Purifier Cost? [2025 Data]
Whole-house air purifier costs depend on a variety of factors, including your home’s size and layout. The type of purifier you choose matters, too.
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•
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•
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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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•
Aug 15, 2024Aug 15, 2024
Can Air Duct Cleaning Cause Damage to Ductwork?
Can air duct cleaning cause damage to your home’s duct system? Yes, if it’s done incorrectly. Here’s how to prevent that from happening.
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•
Apr 7, 2025Apr 7, 2025
5 Signs of Dirty Air Ducts and What You Should Do About Them
The signs of dirty air ducts can be difficult to spot, but it’s important to know what to look for so you don’t pay for a cleaning you don’t need.