Over 45 Years Serving Maryland MHIC #125318  •  Master Gas Lic. #66643
(410) 477-9144
Expert Chimney & Hearth Care Since 1980

Chimney Sweep, Masonry, and Fireplace Services in Baltimore & Central Maryland

We provide professional chimney sweeping, fireplace installation, and masonry repair services in Baltimore, Towson, Columbia, Annapolis, and across Central Maryland. Whether you own a historic rowhome or a modern property, our certified team ensures your chimney system is safe, efficient, and built to last.

✓ 45+ Years in Service
✓ MHIC #2306001
✓ Master Gas Licensed
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Complete Chimney & Fireplace Care

Our Chimney & Fireplace Services

Chimney Sweeping

Professional cleaning and detailed inspections to remove creosote, improve performance, and keep your home safe.

Masonry Repairs

From tuckpointing to crown repairs and full rebuilds, we restore your chimney to handle Maryland’s changing seasons.

Fireplace Installations

Upgrade your space with efficient gas, wood, or electric fireplaces— designed for comfort, style, and easy use.

Gas & Safety Services

We diagnose gas, ventilation, and draft issues to ensure your fireplace runs safely and efficiently year-round.

Find the Right Service
What's Included
  • Full creosote and debris removal
  • Firebox and damper inspection
  • Flue and liner condition check
  • Chimney cap and crown inspection
  • Written safety report
  • NFPA Level 1, 2, or 3 compliant
Schedule a Sweep
Chimney Cleaning Services

Chimney Sweeping, Cleaning & Inspection

A professional chimney sweep is far more than a cleaning — it's a comprehensive safety assessment. Our CSIA-certified sweeps remove creosote (the #1 cause of chimney fires), clear blockages from animals and debris, and inspect every component of your system from firebox to chimney cap.

We perform Level 1, Level 2, and Level 3 NFPA inspections depending on your needs. Every visit includes a written safety report and honest recommendations — never pressure to buy services you don't need.

What We Repair
  • Tuckpointing and mortar joint repointing
  • Crown repair and rebuild
  • Spalling and deteriorating brick
  • Firebox rebuilds and repairs
  • Full chimney reconstruction
  • Water damage assessment and waterproofing
Schedule Gas Fireplace Service
Chimney & Fireplace Masonry

Chimney Masonry Repair, Fireplace Installation & Restoration

Our chimney masons provide expert chimney repair, fireplace installation, tuckpointing, crown rebuilding, firebox restoration, and structural masonry services throughout Central Maryland. Whether you're adding a new fireplace, repairing deteriorating brickwork, or restoring a historic chimney, we deliver code-compliant craftsmanship built to last.

Maryland's freeze-thaw cycles are especially hard on masonry. Water enters small cracks, freezes, expands, and accelerates deterioration. From chimney crown repair and brick replacement to complete chimney reconstruction and fireplace restoration, our experienced masons restore both safety and appearance while matching your home's original materials whenever possible.

What's Included
  • Video camera pre-inspection of existing flue
  • Correctly sized stainless steel liner
  • Top plate and connector installation
  • Smoke and draft testing post-install
  • Full written documentation
Schedule a Liner Consult
Chimney Relining

Stainless Steel Chimney Liner Installation & Replacement

A properly functioning liner is essential for every chimney system. It contains combustion byproducts, protects the masonry from heat and corrosion, and improves draft efficiency. If your liner is cracked, deteriorated, or missing entirely, your home is at risk — regardless of how new your fireplace is.

We install stainless steel flexible liners for wood-burning, gas, and oil appliances. Our liners are sized correctly for each application and installed with UL-listed components from top to bottom.

When You Need It
  • Before buying or selling a home
  • After a chimney fire or lightning strike
  • Unexplained smoke or draft problems
  • Before a liner install to assess condition
  • Any Level 2 or Level 3 inspection
Schedule an Inspection
Advanced Chimney Diagnostics

Video Camera Chimney Inspection Services

Some problems can't be seen from the top — or the bottom. Our high-definition camera system travels the full length of your flue, capturing detailed footage of every inch of your liner, smoke chamber, and firebox interior.

Video inspection is especially important when buying or selling a home, after a chimney fire, or when investigating draft and smoke problems. You receive a digital copy of the footage so you can see exactly what we see — no guesswork, no surprises.

What's Included
  • Custom-fit stainless or copper chimney caps
  • Multi-flue cap options for complex systems
  • Crown inspection and crack assessment
  • Crown rebuild with flexible elastomeric coating
  • Animal guard installation
Schedule a Cap Install
Water Protection Systems

Chimney Cap Installation & Crown Repair

A missing or damaged chimney cap is one of the most overlooked — and most costly — chimney problems. Without a cap, rain, snow, animals, and debris enter your flue freely. The moisture alone can deteriorate a liner in a few seasons. A properly fitted cap is one of the best investments you can make in your chimney system.

The chimney crown — the concrete slab that seals the top of your chimney structure — is equally critical. Cracks in the crown allow water to migrate down into the masonry. We pour custom-formed, flexible crowns that expand and contract with temperature changes without cracking.

What We Cover
  • CO₂ diagnostic testing and reporting
  • Gas fireplace and insert servicing
  • Draft and backdraft correction
  • Venting inspection and code compliance
  • Gas valve and ignition service
  • Direct vent and B-vent systems
Schedule CO₂ Service
Gas Fireplace Services

Gas Fireplace Service, Venting & Carbon Monoxide Testing

Gas fireplaces, inserts, and venting systems require regular maintenance to operate safely and efficiently. Our Master Gas Licensed technicians provide gas fireplace service, venting inspections, ignition repairs, and carbon monoxide testing to ensure your system performs as intended.

Carbon monoxide is odorless, colorless, and potentially deadly. Improper venting, damaged components, and draft issues can allow dangerous gases to enter your home. We diagnose and correct venting problems, repair gas fireplace components, and verify compliance with Maryland safety codes for direct vent, B-vent, and sealed combustion systems.

How It Works

What to Expect When You Book with
Ace of Diamonds Chimney

We've made the process as simple and stress-free as possible. Here's exactly what happens from your first call to job completion.

1

Schedule Online or by Phone

Fill out the form on this page, call us at (410) 477-9144, or visit our Rosedale showroom. Tell us your service, county, and preferred timeframe. We'll confirm your appointment within one business day — often the same day.

2

We Arrive Ready to Work

Our certified technicians arrive in a marked vehicle with all tools and equipment needed for your service. We lay drop cloths, use HEPA vacuums, and treat your home with the same care we'd give our own. No mess, no surprises.

3

Thorough Inspection & Assessment

If we find something that needs attention, we'll show you photos or video evidence and explain it clearly — no jargon, no pressure. You'll know exactly what we found and what it means.

4

Service Completed to Standard

For repairs and installs, we don't cut corners — we use the right materials, the right methods, and we stand behind our work.

Where we work

Serving All of Central Maryland & Greater Baltimore

Our certified chimney sweeps and fireplace technicians serve homeowners and businesses across the Baltimore metro and surrounding Central Maryland counties every day. Same-week scheduling available throughout our service area.

Baltimore City
Chimney sweep, fireplace install & gas services throughout Baltimore City neighborhoods.
Baltimore County
Serving Rosedale, Towson, Catonsville, Dundalk, Owings Mills & beyond.
Anne Arundel County
Annapolis, Glen Burnie, Severna Park & surrounding areas.
Howard County
Columbia, Ellicott City, Clarksville & all of Howard County.
Carroll County
Westminster, Sykesville, Eldersburg & surrounding communities.
Harford County
Bel Air, Aberdeen, Forest Hill, Havre de Grace & all of Harford County.
Prince George's County
Bowie, Laurel, College Park & surrounding areas.
Common Questions

Chimney & Fireplace FAQs

Answers to the questions Maryland homeowners ask us most. Don't see yours? Call us at (410) 477-9144 — we're happy to help.

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The NFPA recommends a chimney inspection every year, regardless of how often you use your fireplace. If you burn wood regularly, an annual sweep is also recommended. If you use your fireplace only occasionally, an inspection every year and a sweep every 1–2 years is typical. Gas appliances still require annual inspections — CO₂ issues don't discriminate based on fuel type.

Yes. Even an unused fireplace can have deteriorating mortar, animal nests blocking the flue, or a cracked liner that could allow moisture or CO to enter your living space. An unused fireplace is not a safe fireplace — it's just an uninspected one. Annual inspections are recommended by the NFPA for all fireplace and heating appliance installations.

A standard chimney sweep and Level 1 inspection takes 45 minutes to 1.5 hours for most homes. If a video inspection (Level 2) is included or if there are multiple fireplaces, plan for 1.5–2.5 hours. We'll give you an estimated time window when you book, and we'll keep you updated if anything changes on the day of service.

Creosote is a tar-like byproduct of burning wood that accumulates on the inside of your flue liner. It's highly flammable. At Stage 3 (glazed creosote), it can ignite and burn at temperatures exceeding 2,000°F — hot enough to crack your liner, damage the masonry, and potentially ignite your home structure. Annual sweeping removes creosote before it reaches dangerous levels.

All chimneys used with heating appliances require a properly functioning liner. Older homes (pre-1940s especially) often have clay tile liners that crack over decades of use. Signs you may need a new liner include smoke spilling back into your home, visible cracks or missing sections on video inspection, a recent chimney fire, or switching to a new appliance that requires a different flue size. A video inspection will give you a definitive answer.

We serve Baltimore City, Baltimore County, Anne Arundel County, Howard County, Harford County, Carroll County, and Prince George's County. Our showroom is located in Rosedale, MD. If you're unsure whether your area is covered, give us a call at (410) 477-9144 — we're happy to check.

Yes. Ace of Diamonds holds MHIC license #125318, Master Gas license #66643, and carries full general liability and workers' compensation insurance. All of our chimney sweeps are CSIA certified. We are also a BBB Accredited Business and members of the NCSG and NFPA. You can ask to see any of these credentials at any time.

Ace of Diamonds team performing chimney service in Baltimore
The Ace of Diamonds Chimney Advantage

Fireplace & Chimney Experts You Can Trust.

Ace of Diamonds is a proud family-owned business, owned and operated by Maryland native Ted Bienert, and rooted in the communities we serve. For over 45 years, we’ve helped keep our neighbors’ homes safe, warm, and comfortable—from historic Baltimore rowhomes to modern estates in Clarksville. Beyond our work, we’re committed to giving back through local charitable events and community involvement.

Proudly Serving Central Maryland — Including Baltimore, Anne Arundel, Howard, Harford, and Carroll Counties.
Visit Our Showroom — Stop by our Rosedale, MD location to explore one of the area’s best selections of fireplaces, stoves, and inserts.
Proudly Serving Maryland Homes

Trusted by Your Neighbors

★★★★★

"The only company I trust for my chimney in Baltimore. They were clean, punctual, and very thorough with the video inspection."

RM
Robert M.
Liner Install
★★★★★

"They restored the crumbling brickwork on my 1920s home perfectly. You can tell they take masonry seriously."

SL
Sarah L.
Masonry Repair
★★★★★

"Ted and his team are the real deal. No high-pressure sales, just honest advice and expert cleaning."

JP
James P.
Annual Sweep
Visit our Rosedale, MD Fireplace Showroom
Take the Next Step

Ready to Protect Your Home?

From routine sweeps to complete chimney rebuilds, Ace of Diamonds is the name Maryland trusts for safety and service. Contact us today or stop by our showroom on Golden Ring Rd in Rosedale.

Schedule Service Call (410) 477-9144
Call (410) 477-9144
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