Licensed, insured, and backed by 20+ years of catching creosote buildup, cracks, and draft issues in Baltimore homes, before they become costly repairs. Book your preventive sweep today.
If your chimney’s seen its share of Baltimore winters, damp spring rains, summer humidity, and that first cold snap, it’s probably hiding problems you can’t see. Creosote buildup, cracked flue liners, or a failing damper don’t announce themselves with a bang. They start small: a faint smell when you light the fire, soot on your ceiling, or that draft sneaking into your living room. Hernandez Chimney Inc. specializes in catching these issues early, before they turn a cozy evening into a fire hazard or a $2,000 repair bill. We’re the chimney sweep Baltimore homeowners trust for maintenance that keeps their fireplaces running safe, clean, and efficient, season after season.
Comprehensive chimney sweep for Baltimore homes and businesses.
The gold standard for Baltimore homes: a deep clean that removes creosote, soot, and debris before it hardens or ignites. Includes a visual inspection for early warning signs.
Learn more →A thorough look for hidden damage, blockages, or safety risks, required before every fire season in Baltimore County and city ordinances.
Learn more →Specialized treatment for Stage 1, 2, or 3 creosote: Baltimore’s humid summers turn soot into a fire hazard if left unchecked.
Learn more →Fixing cracks, rusted caps, or damaged liners before Baltimore’s next freeze turns a small leak into a major headache.
Learn more →Replacing corroded or damaged flue liners to meet Baltimore’s safety codes and prevent CO leaks into your home.
Learn more →Baltimore’s urban and suburban areas attract critters, we safely remove nests, repair damage, and seal entry points.
Learn more →We hold ourselves to the highest standards so you can hire with total confidence.
Hernandez Chimney Inc isn’t just another chimney sweep in Baltimore, we’re the team that treats your chimney like it’s our own. Too many homeowners wait until smoke backs up or a crack turns into a leak before they act. We stop problems before they start. Our crew knows Baltimore’s chimneys inside out, from the brick-and-mortar row houses near Fells Point to the modern fireplaces in Mount Vernon. We don’t just clean; we inspect for hidden damage, test drafts, and explain what’s really going on in your flue. That’s how you avoid $2,000 repairs down the road. When you call us, you’re not just getting a sweep, you’re getting a second set of eyes that’s seen thousands of chimneys, including yours, before you even light the first fire.

Baltimore’s summers are sticky, and that humidity doesn’t just make you uncomfortable, it turns loose soot into creosote faster. What starts as a thin layer can harden into a flammable coating in months. We’ve seen chimneys where homeowners skipped a sweep for ‘just one season,’ only to need a full reline job. Our preventive maintenance catches this early, so your chimney stays safe and efficient. No guesswork, just a clean flue ready for your next fire.
Baltimore’s historic neighborhoods have chimneys built to last, but they don’t last forever without care. Cracks in the masonry, rusted caps, or failing liners often go unnoticed until you light a fire and smell gas. We’ve inspected enough chimneys to spot these issues before they become emergencies. Our diagnostic checks include a camera scope to find hidden damage, so you’re never left wondering if your chimney is safe. Licensed, insured, and backed by a clear warranty.
A blocked chimney forces your fireplace to overwork, burning through fuel and costing you more. In Baltimore’s cold winters, that means higher heating bills and weaker drafts. Our sweeps remove creosote and debris, so your fire burns hotter, cleaner, and with less wood. We’ve seen homeowners cut their firewood use by 30% after a proper cleaning. Plus, a well-maintained chimney reduces the risk of creosote fires, something no one wants during holiday season.
From salt air near the harbor to freeze-thaw cycles in the suburbs, Baltimore’s climate takes a toll on chimneys. Moisture seeps into cracks, rust eats at metal parts, and ice can block flues. We’ve repaired enough chimneys damaged by winter storms to know: prevention is cheaper than repair. Our maintenance plans include checks for water damage, rust, and structural weak points, so your chimney stands up to whatever Baltimore throws at it. No surprises, just a chimney that works when you need it.
We’ll schedule a time to inspect your chimney at no cost. No pressure, no upselling, just a honest assessment of what’s needed. Baltimore homeowners tell us they appreciate the straightforward quote upfront. We’ll confirm your appointment within 24 hours, and arrive ready to work. Licensed, insured, and backed by a clear warranty on all repairs.
Our crew uses rotating brushes, high-powered vacuums, and a chimney camera to spot hidden damage. We’ll pull out creosote, soot, and debris, then check for cracks, rust, or blockages. If we find issues, we’ll explain them clearly, no jargon, just the facts. Baltimore’s older homes often have surprises, and we want you to know what’s going on before we recommend fixes.
If we find a cracked liner, rusted cap, or other damage, we’ll fix it right away. No waiting weeks for parts or subcontractors. Our crew carries common repair materials, and we’ll walk you through the work as we go. For bigger jobs like relining, we’ll schedule a follow-up within 48 hours. All repairs come with a 1-year warranty, and we’ll show you how to spot future problems.
Before we leave, we’ll explain what we did, what’s safe to ignore, and how to keep your chimney in top shape. Baltimore’s climate means your chimney needs care year-round, not just before winter. We’ll give you a checklist for seasonal checks, so you’re not caught off guard. And if you’re unsure about anything, just call us. We’re here to help, not just sell you a service.
"We’ve had our chimney swept by Hernandez Chimney for five years now, and it’s the only reason our 1850s row home’s fireplace still works. Last winter, they caught a hairline crack in the flue liner before it turned into a major leak. Saved us thousands in repairs. Their crew is thorough, explains everything, and actually shows up when they say they will, unlike some other guys we’ve tried in Baltimore. Highly recommend."
"I ignored my chimney for years because I thought ‘if it ain’t broke, don’t fix it.’ Big mistake. After a close call with a creosote fire last November, I called Hernandez Chimney. They cleaned it out, found a rusted damper, and fixed it all in one visit. Now I have my fireplace back without worrying about smoke filling the house. Their preventive sweep saved me from a real headache, and my wallet."
"We bought our home near the reservoir and inherited a chimney that hadn’t been touched in decades. The first sweep revealed a nest of squirrels, a cracked crown, and enough creosote to clog the flue. Hernandez Chimney removed everything, repaired the damage, and installed a screen to keep critters out. Now we can use the fireplace without fear. Their crew was respectful, did a great job, and even gave us tips on how to burn wood more efficiently. Worth every penny."
"After moving to Baltimore from DC, we realized our chimney was a ticking time bomb. The previous owners had never swept it, and the soot buildup was terrifying. Hernandez Chimney came out, did a full inspection with their camera, and cleaned it thoroughly. They also found a small leak in the flue and sealed it before it became a bigger issue. Now we can enjoy our fireplace without stress. Their team is professional, knowledgeable, and actually listens to your concerns."
"I’ve had chimney issues before, but nothing like what Hernandez Chimney found in our old brick home. They discovered a corroded liner, a blocked flue from leaves, and even some water damage from a cracked cap. They fixed everything in one visit and explained exactly what was wrong. No upselling, just honest work. Now our fireplace drafts perfectly, and I sleep better knowing our chimney is safe. Baltimore’s winters are harsh, don’t skip your chimney maintenance."
"We’ve used Hernandez Chimney for three years now, and they’re the only chimney service we trust in Baltimore. Last year, they caught a nest of birds before they caused a fire, and this year, they found a weak spot in the masonry that could’ve led to a leak. They fixed it before winter hit. Their crew is reliable, their prices are fair, and they actually care about keeping your chimney safe, not just making a quick sale. If you want a chimney that works, call them."
Expert local advice for Baltimore homeowners.
Proudly serving Baltimore and these nearby communities.
That’s creosote buildup, tar-like residue from incomplete combustion, trapped in your flue. Baltimore’s damp winters make creosote stick worse, and if it’s not cleaned regularly, it can ignite or clog your chimney completely. We’ve seen this in older brick chimneys near the Inner Harbor where moisture gets trapped. A pro sweep removes it before it turns into a fire hazard. Most homeowners here need a sweep at least twice a year, but if you burn a lot of wood, we recommend more frequent checks.
Baltimore’s tight, modern homes often have poor drafts because of sealed windows and energy-efficient construction. A weak draft means smoke spills into your home instead of up the chimney. We test drafts with an anemometer and adjust dampers or even recommend a chimney cap if your flue is too narrow. Many older row houses downtown have this issue, we’ve fixed draft problems in over 200 Baltimore chimneys by ensuring proper airflow and sealing leaks.
Cracks are never normal, especially in Maryland’s freeze-thaw cycles. A hairline crack can let in rain, which freezes and expands, turning a small issue into a major leak. We’ve seen chimneys in Towson and Pikesville collapse from untreated cracks. If it’s less than 1/8 inch wide, we can seal it with high-temp mortar. Wider cracks mean you’ll need a full repointing job before winter. Don’t wait, cracks worsen fast in Baltimore’s climate.
Absolutely. No one knows what the last owner burned, or if they ever swept it. Baltimore’s old chimneys hide surprises: thick creosote, rusted dampers, or even animal nests. We’ve found blocked flues in homes where the sellers swore ‘everything was good.’ A sweep isn’t just about cleaning; it’s your first chance to see what’s really inside. If the chimney’s over 30 years old, we’ll also inspect the liner for corrosion, which is common in Baltimore’s humid summers.
Smoking usually means a blockage, poor draft, or a chimney that’s too small for your fireplace. We’ve cleared dozens of clogged flues in Baltimore, including one in a historic home in Federal Hill where the original chimney was too narrow for a modern insert. Before you spend thousands on a new chimney, let us check for creosote, bird nests, or a collapsed liner. Often, a sweep and a few adjustments, like adding a chimney cap or cleaning the damper, can fix it for under $200.
At least once a year if you burn wood, but twice if you use your fireplace heavily. Baltimore’s summers create more creosote than drier climates, and a single winter’s worth of buildup can turn dangerous fast. We recommend scheduling your sweep in early fall, before the first cold snap, and again in spring if you burn a lot. Many of our customers in the city’s older neighborhoods stick to this schedule and avoid costly repairs. If you only use your fireplace occasionally, once a year is fine, but we’ll inspect for hidden issues every time.
Replacing a chimney cap sounds simple, but doing it wrong can let in rain, animals, or even sparks from your fireplace. We’ve seen DIY caps shift and cause leaks in chimneys near the Jones Falls Expressway. A pro ensures it’s sealed tight, angled correctly, and won’t trap moisture. We use stainless steel caps that last 10+ years in Baltimore’s weather. If your cap’s rusted through, it’s a sign your chimney needs a full inspection, rust spreads fast in our climate.
Smoke shelves are the horizontal ledges inside your chimney that catch creosote and debris. They’re common in pre-1980s Baltimore homes and get clogged with soot, which can ignite. We clean them during every sweep, skipping this step is like ignoring half your chimney. Many homeowners don’t even know they have one until we pull out a foot of black gunk. If yours is packed solid, we’ll recommend a full chimney relining to prevent future buildup.
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