Professional chimney maintenance and inspection services to keep your home safe and your chimney in top condition.
- guaranteed service
- We service all chimney types
- no hidden fees
Your chimney is a vital part of your home’s heating system, safely venting smoke, gases, and combustion byproducts. Without regular maintenance, creosote can build up, cracks may form, and you risk fire hazards or dangerous carbon monoxide leaks.

Our Chimney Maintenance Services
Chimney Inspection and Diagnostics
Comprehensive visual and tool-based inspection of your chimney’s structure, masonry joints, and any signs of blockage or wear.
Preventive Chimney Cleaning
Safe removal of soot, creosote, and debris to maintain strong draft and prevent chimney fires.
Chimney Cap and Spark Arrestor Maintenance
Check, repair, or replace caps and screens to keep out rain, birds, and
Leak Prevention and Waterproofing
Identify and seal problem areas to prevent water leaks and damage.
Draft & Airflow Testing
Ensure your chimney pulls properly and efficiently, with no hidden blockages.
Maintenance Tips and Expert Advice
We provide recommendations for safe fireplace or stove use and ongoing chimney care.
Other Services
- Chimney Repair
- Chimney Cleaning
- Masonry Work and Repair
- Fireplaces Repair
Call us now or request an appointment online
Ready to Book Your Chimney Maintenance?
How often should I have my chimney cleaned and maintained?
We recommend at least once a year, especially before heating season starts.
What’s included in chimney maintenance?
A thorough cleaning, inspection, preventive care, and recommendations for any needed repairs or future maintenance.
Can I clean my own chimney?
Basic upkeep is possible, but full cleaning and inspection should always be performed by a trained professional for safety.
Do you offer emergency or urgent appointments?
Yes! If you suspect a blockage or draft problem, we can usually schedule a visit quickly.
Do you service both wood-burning and gas chimneys?
Yes, we handle all types of fireplaces and chimneys.
King County
Seattle, Bellevue, Kirkland, Redmond, Sammamish, Issaquah, Federal Way, Kent, Auburn, and more
Snohomish County
Everett, Lynnwood, Edmonds, Mukilteo, Mill Creek, Marysville, Lake Stevens, Monroe, and more
Pierce County
Tacoma, Puyallup, Lakewood, Gig Harbor, Bonney Lake, University Place, and all surrounding areas
See Our Real Customer Reviews
All our reviews come from verified customers on Thumbtack. Homeowners across Seattle trust our chimney sweeping for safety, reliability, and friendly service.
EXCELLENT Based on 29 reviews Letao J.2025-05-12Verified I had a great experience working with Alex on my fireplace and chimney. He extended my fireplace with brick and remodeled it using cement board—the finished look is exactly what I was hoping for: clean, solid, and stylish. He also cleaned and repaired my chimney with great attention to detail and high-quality workmanship. Alex was prompt, professional, and clearly knows his craft. I really appreciate how efficiently he completed the work without cutting corners. Highly recommend him if you’re looking for reliable and skilled fireplace and chimney services! Janet Y.2025-05-09Verified I couldn’t be more pleased with the chimney repair work done by OS Group LLC! From the moment I reached out, their team was professional, prompt, and incredibly knowledgeable. He provided a clear and fair estimate, explained every step of the process, and completed the work on time with zero surprises. Alex was respectful of my home, left the area spotless, and the results speak for themselves—my chimney looks and functions like new. I truly appreciated their attention to detail and commitment to safety. If you’re looking for reliable, top-notch chimney repair, look no further. Highly recommended! Pavel R.2024-11-01Verified High level professional Emmanuella S.2024-11-01Verified Very nice work and punctual. John B.2024-10-26Verified They gave me an estimate to repair my chimney and install liners and caps. They came out the next day and did the job. The work was excellent and the price was reasonable. Would definitely hire them again. Dotty C.2024-10-24Verified Alex was great and he fixed our flue chain and added a cap on our fireplace stack. Will definitely use him again if needed and I highly recommend him! Megan D.2024-10-23Verified Honest and Professional. Will be using O.S. Group again. Thank you! Ashley m.2024-10-22Verified My parents were in need a of a long overdue chimney cleaning. I reached out and Alex responded promptly. He was able to come out the next day to clean and was reasonably priced compared to other companies. While doing the inspection he found a crack and promptly agreed to repair and clean same day. We will definitely be calling him back and referring this company to others. Amy G.2024-10-17Verified First, I want to say I made some mistakes even the ones Thumbtack warns you about. I did not get a written estimate and I should have as there was a bit of a language barrier and breakdown in the scope of the project. Alex was awesome so I thought we'd be ok. Some of the concerns I had for the price of the job was attention to detail, scope and clean up. There was a anti moss spray that went on the outside of the chimney stack - no covering of windows or the side of the house. There is this awful sticky material all over two of my windows that I can't get off with any product (see photos)! Dirty tools were put on my brand new carpet that I had to ask for more paper to be put down and the outdoor furniture and wood rack never put back in place (kinda heavy and bulky for me). I'm still not sure if I even got the chimney swept. So learn from me and hoping so will O.S. group as I thought Alex was a really nice guy trying to earn a living. Laurie L.2024-10-14Verified Such a great experience having Oleksander come and clean my chimney, fix my damper and give me a solid plan for the other repairs I requested. I am confident about having him out for more work. Can’t recommend highly enough.
contact us today
We treat your home like it’s our own — and that’s our promise.
We reply within 24 hours
Mon-Sat, 9am – 6pm