Diane
yesterday
Oshawa
I slept so much better after having the ducts cleaned, the Technician was on time and did a professional job. Very pleased with this service.
Mold Removal & Remediation in Ottawa & area
BlueGuard mold assessment and remediation helps homeowners in Ottawa, Gatineau, Durham, Montréal and Eastern Ontario deal with surface mold on caulking, window frames, tile and basement areas. It starts with a $149 assessment before tax that identifies likely moisture sources, followed by a written remediation quote before any work begins.
From $149before tax
- Insured & bonded
- Background-checked
- Pay after the clean
- 24h re-clean guarantee
What’s included
- On-site mold assessment
- Moisture source notes
- Written remediation quote
- Surface mold cleaning (quoted)
Not included
- Structural repairs
- Plumbing or roofing leak repairs
Ideal for
- Homeowners
- Landlords
- Basement owners
About this service
Mold needs three things to grow: moisture, something to feed on and time. Canadian homes supply all three. Humid summers, the spring thaw pushing water toward basement walls, condensation on cold windows in January and bathrooms without enough ventilation all create the damp conditions mold loves. Black spots on shower caulking, grey patches on window frames and a musty basement smell are signs you should not ignore.
Start with an assessment
Every mold job starts with a $149 assessment. A BlueGuard technician looks at the affected areas, checks for visible growth and signs of moisture, and identifies the most likely sources: condensation, poor ventilation, leaks, high humidity or water coming in from outside. You get a clear explanation of what we found and a written quote for remediation. No remediation work starts without your approval.
What remediation includes
For surface mold in limited areas, remediation typically includes:
Containing the work area so spores are not spread through the home.
Cleaning and treating affected surfaces such as tile, grout, caulking, window frames, sills and painted walls with products suited to the material.
Removing and disposing of contaminated cleaning materials safely.
Cleaning the surrounding area and air-handling grilles.
Recommendations to stop it coming back: ventilation, humidity control, condensation management and repairs to be done by the right trade.
When we will recommend a specialist
Large areas of mold, mold inside walls, ceilings or insulation, mold after flooding or sewer backups, and any growth caused by structural problems need specialized remediation and often repairs. In those cases, we will tell you honestly and recommend the right professional instead of cleaning the surface and letting it come back.
Prevention tips for Canadian homes
Run bathroom fans during and for 20 to 30 minutes after showers. Keep indoor humidity reasonable, especially in basements during summer, using a dehumidifier if needed. Wipe condensation from windows in cold weather. Keep gutters clear and downspouts directed away from the foundation so spring melt does not end up in the basement. Our gutter cleaning service can help with that.
Air ducts and mold
Moisture and dust in ductwork can spread musty odours and particles to every room. As a NADCA-certified duct cleaning company since 2020, BlueGuard can inspect and clean the ductwork as part of a complete indoor air plan.
Our standards
Technicians are insured and background-checked, you receive a written quote before remediation starts and you pay only after work is complete.
Simple from start to finish
How it works
Four easy steps. No contracts, no surprises.
Step 1
Send details & photos
Tell us about the job and add a few photos.
Step 2
Get an exact quote
We confirm your price, usually the same day.
Step 3
We clean, you relax
Insured, background-checked cleaners arrive with all supplies.
Step 4
Pay after it’s done
Pay on-site once the clean is complete: e-Transfer, card or cash.
Mold Removal & Remediation pricing
- Mold Removal & Remediation
- $149
All prices in CAD before tax (HST in Ontario, GST + QST in Québec). Your final price is confirmed online before you book.
See full pricingBest season to book
Most popular in Spring & Fall. Book early — these dates fill fast in Ottawa.
Related services
Local crews
Where we offer Mold Removal & Remediation
The same insured BlueGuard crew in 34 cities across Ontario and Quebec.
34 cities
All service areasGoogle reviews
What clients say aboutBlueGuard
Real reviews from homeowners and businesses across Ottawa, Oshawa and Montréal — straight from our Google Business Profiles.
- Google
Benoît Bazin
5 days ago
MontréalI had an excellent experience with the duct cleaning service. The technician was professional, friendly, and took the time to thoroughly clean the vents and ducts. Everything was explained clearly, and the service was performed efficiently. I am very satisfied with the result and highly recommend this company to anyone looking for a professional duct cleaning service.
Alex John
5 days ago
MontréalI had a great experience with the duct cleaning service. The technician was professional, friendly, and took the time to properly clean the vents and ductwork. Everything was explained clearly, and the service was completed efficiently. I was very happy with the results and would definitely recommend this company to anyone looking for professional duct cleaning.
sib naqvi
5 days ago
OshawaGreat experience with BlueGuard Duct Cleaning! The team was professional, friendly, and arrived on time. They did a thorough job cleaning our ducts and took the time to explain everything along the way. The whole process was smooth and hassle-free. I’m very happy with the service and would definitely recommend BlueGuard Duct Cleaning to anyone looking for reliable and professional duct cleaning services!
Alex John
5 days ago
OshawaI am very satisfied with the duct cleaning service I received. The team was punctual, professional, and very careful throughout the entire process. They did a thorough job cleaning the duct system and vents, and they made sure everything was done properly. The communication was excellent, and I appreciated their attention to detail. I would highly recommend this company to anyone needing reliable and professional duct cleaning services.
N Edwards
5 days ago
OshawaWe had a great experience with their duct cleaning service. They were flexible with scheduling and arrived on time. The technician was very professional, knowledgeable, and friendly. The cleaning was done thoroughly, and everything was left neat and tidy. We’re very happy with the service and would definitely recommend them to others!
Gabi Marie
6 days ago
OshawaThey were very nice, worked fast, and were communicative throughout the process. I had them come clean the air ducts, the ventilation fans and sanitize the furnace in preparation for winter, they did a good job and all together I found their prices to be very reasonable.
Ravalibavu
last week
OttawaExcellent work and 5-star service. Highly recommended!
BlueGuard repliedSaer Diop
last week
OttawaBlueGuard Duct Cleaning was easy to work with from start to finish. The technician was professional, friendly, and took the time to make sure the duct cleaning was completed properly. The work was handled efficiently, and everything was left clean and tidy afterward. I’m very satisfied with the service and would be happy to recommend BlueGuard Duct Cleaning.
BlueGuard replied
Mold Removal & Remediation FAQ
How much does a mold assessment cost?
The assessment is $149 before tax. It identifies affected areas and likely moisture sources, and you receive a written remediation quote before any work starts.
Can I just clean the mold myself?
Small spots on shower caulking or a window frame can often be cleaned during regular cleaning. If mold keeps returning, covers a larger area or comes with a musty smell, have it assessed so the moisture source is addressed too.
Do you remove mold inside walls?
No. Mold inside walls, ceilings or insulation requires specialized remediation and repairs. If we find signs of it, we will recommend the right professional.
Why does my basement smell musty in summer?
Basements are cooler than outdoor air, so summer humidity condenses there. A musty smell often means high humidity or hidden growth. A dehumidifier helps, and an assessment can find the source.
Will the mold come back after treatment?
Mold returns if the moisture problem stays. That is why every assessment includes recommendations on ventilation, humidity and repairs, so the cause is fixed and not just the surface.
Ready for a cleaner home?
See your exact price in under a minute. No card needed to book — you pay on-site only after the clean is done.