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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon43
    Verified mold testing and remediation services reviews

Top-Rated Mold testing and remediation specialists in Frederick - Updated Nov 2026

Avatar for Pure Maintenance of Colorado, LLC
Pure Maintenance of Colorado, LLC
4.8(
92
)
Mold & Toxic Material TestToxicity and Mold - RemovalDry-rot, Water or Pest Damage - Major Repair+2 more

Serving Frederick, CO and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I interviewed five companies for a mold mitigation. I chose this company because Ryan the representative was the most thorough in finding places where there was moisture that the other companies did not even look for. They have always showed up on time and have done what they said they would do. Ryan was always available by phone or email for any questions. He was very responsive at all times. Their follow up is very good, testing to make sure there are no mold spores in my home. I would I commend them very highly."
Chevy City Express equipped with dry-fogging tech
Dry-fogging nozzles in action
Dry fog in action
Start
Almost There...

+35

Response time4 hrs
Response rate94%
13 neighbors recently requested a quote
Avatar for Aqua Dry Restoration Co LLC
Aqua Dry Restoration Co LLC
4.9(
16
)
Toxicity and Mold - RemovalToxicity and Mold - Removal - For Business

Serving Frederick, CO and surrounding areas

Approved

In business since 2009

Credit card accepted

Offers commercial services

With over 10 years of professional experience, Aqua Dry Restoration Co. has certified professional technicians dedicated to your Water Restoration & Mold Remediation needs. We specialize in the cleanup and restoration of residential and commercial property after water damage. We also provide mitigation services for mold and mildew. Our staff is highly trained in property damage restoration. From initial and ongoing training to regular IICRC-industry certification, rest assured our staff is equipped with the knowledge to restore your property. \n \nWe understand the stress and worry that comes with water or mold damage and the disruption it causes your life and home or business. Our goal is to help minimize the interruption to your life and quickly make it "Like it never even happened." No damage is too large or too small for Aqua Dry Restoration CO. If you would like to schedule service for your home or business, please call today! Visit our website at https://www.aquadryco.com/

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2
3
Additional Photos
Additional Photos

+24

12 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for S and S Home Inspections
S and S Home Inspections
5.0(
42
)
Indoor Air Quality TestingMold & Toxic Material TestMold & Toxic Material Test - For Business

Serving Frederick, CO and surrounding areas

Approved

In business since 2013

Credit card accepted

Offers commercial services

"Scott is very thorough and informative. He also seems very honest and friendly. He had a very quick response time to my request for quotes and I got an appointment right away. The turnaround time was also very quick for the test results as well. I think his prices are comparable to that of what others offer to test or even lower. I like that he only does testing and not remediation so that there's no conflict of interest."
Thermostat Problems
Combustion Air Analyzer
Southwest View
UAV Photos
Baseboard Thermal

+2

Response time4 hrs
Response rate88%
Recommended by97%of homeowners
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Mold Testing and Remediation FAQs, answered by experts

One of the first signs of mold in an air conditioner is a musty smell. You're likely to notice the smell when the unit runs, from the air coming out of the vents or the unit itself. You may also be able to see mold growing on the unit, such as near the condenser coils or by the fan. In some cases, there may be visible mold by the vents.

There are two types of mold symptoms in the home: visible mold and unexplained health issues. If you have allergies out-of-season, brain fog with no other obvious cause, constant congestion, and other such symptoms, you may have a mold problem. Oftentimes you can smell mold in your home, even if you can’t see it. 

While a professional can always help, there are some common plumbing culprits you can check yourself to see if you can find the sewer gas smell. For example, you should check your water traps, sometimes called P-traps and S-traps, which are located under sink, shower, and laundry drains. The wax ring beneath the base of your toilet, which creates a watertight seal with the plumbing, could also have gone bad.

Yes, brown spots on a ceiling are usually caused by water leaks and can lead to mold growth, especially if you don’t correct the underlying problem. Ongoing water leaks and moisture issues will almost always result in mold growth, especially if you live in a warm climate. Mold is a health hazard, so get the root problem fixed quickly, clean it, and encapsulate the area to avoid mold formation.

When you smell something, it’s because the particles of what you are smelling are floating through the air. If you smell mold, it means that it’s airborne, and whether or not it’s harmful depends on the type of mold. It’s very hard to tell the difference between molds, even with the internet to guide you. Call a professional as soon as you see mold, they will test it, remove it, and make sure you aren’t breathing anything harmful.

The Frederick, CO homeowners’ guide to mold testing and remediation services

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