Frequently Asked Questions

The National Fire Protection Association recommends annual inspection, with cleaning as needed based on use and fuel type. In Mount Vernon, where many homes burn seasoned hardwood through the heating season from November into March, that usually means a sweep every year or every cord of wood burned. Pellet stoves and gas inserts need less frequent cleaning but still require annual inspection. If you notice smoke backing up into the room, a strong odor, or visible creosote flakes in the firebox, don't wait for the calendar - call us.

We arrive in a marked van, lay drop cloths from the door to your fireplace, and set up our rotary brushes and HEPA vacuums. The sweep itself takes 45 minutes to 90 minutes depending on buildup and system complexity. We clean from both the firebox and the roof when accessible, containing all soot and debris. Afterward, we run the damper through its full range, check for obstructions, and give you a written report. If we find anything concerning, we show you the photo evidence and explain your options without pressure.

A routine sweep in a Mount Vernon colonial or Tudor-style home takes about an hour. Heavy creosote buildup, multiple flues, or a system that hasn't been serviced in several years can extend that to two hours. We don't rush. The 400th job gets the care of the first - that's our K.E.Y.S. code. We'll tell you the expected timeframe when we book, and we'll be there when we say. If we discover unexpected damage that needs discussion, we build that time in rather than making you feel hurried.

Remove ashes, decorative items, and anything fragile from the mantel and hearth area. Make sure we have a clear path from the door to the fireplace. If you have a wood stove insert, don't burn a fire for at least 24 hours before we arrive so the system is fully cool. We bring our own drop cloths, vacuums, and tools. You don't need to clear furniture from the room - we work around it the way we'd work in our mother's house. If roof access is needed, we handle the ladder setup.

Yes, once we've finished and packed up, your fireplace is ready for use. We don't apply any chemical treatments that require curing time. The flue is clear, the damper is tested, and the firebox is clean. Many Mount Vernon customers schedule their sweep in early fall so they're ready for the first cold snap. We sweep chimneys in Pelham and Bronxville neighborhoods right through burning season, though - if you need us in January, we'll be there when we say.

We install stainless steel liners from Olympia Chimney and Gelco, depending on your appliance type, flue configuration, and local code requirements. Both manufacturers produce UL-listed liners in standard and heavy-wall grades for wood, gas, and oil appliances. In Mount Vernon's older homes with unlined brick chimneys, a properly sized stainless liner is often the safest path to code compliance. We measure your flue on-site and specify the correct diameter and insulation package. Every liner installation includes a written warranty and documentation for your insurance company.

We use HeatShield cerfractory sealant for certain types of flue liner restoration, specifically when we find minor gaps, cracks, or spalling in otherwise sound clay tile liners. It's not a substitute for a failed liner or a chimney with structural masonry damage - in those cases, we recommend stainless steel relining. HeatShield works well in Mount Vernon homes where the original clay liner is largely intact but has developed small openings that let gases and sparks reach the masonry surround. We always camera-inspect first so you can see the damage and the repair.

Famco manufactures chimney caps, dampers, and ventilation accessories we install when the existing component has failed or was never properly specified. A rusted-out or missing chimney cap is one of the most common issues we find in Pelham Bay and Morris Park homes - water runs straight down the flue, accelerating liner and masonry deterioration. We measure your flue tile or liner outer dimension and install a cap with proper mesh screening to keep out animals and debris while allowing smoke to exit freely.

If your original clay flue tiles are intact, properly aligned, and free of cracks or gaps, you may not need a liner replacement. We determine this with a level-2 camera inspection that lets you see the condition for yourself. In Mount Vernon homes built before 1940, we often find clay tiles that have shifted, cracked from freeze-thaw cycles, or never met modern sizing requirements for today's appliances. When we recommend a stainless steel liner from Olympia Chimney or Gelco, we explain exactly what the camera showed and why waiting creates risk you may not want to carry.

Every pro working under our name is required to hold the license and insurance their state requires, and we train to the Chimney Safety Institute of America sweep certification standards. Russell Haines, who leads our Mount Vernon branch, ensures our team maintains current credentials and follows Hearthstone's documented procedures on every job. We don't send anyone into your home who isn't qualified to be there. You can ask to see certification documentation at any appointment - we'll show it without hesitation.

Yes, we carry general liability insurance and workers' compensation coverage as required for chimney service work in New York. This protects your property and our crew in the unlikely event of damage or injury during your appointment. We're happy to provide a certificate of insurance upon request. In twelve years of serving Mount Vernon, Yonkers, and the surrounding communities, we've built our reputation on doing the job right and standing behind it - but proper insurance is part of being a company that plans to be in town in thirty years.

Chimney cleaning and routine maintenance typically don't require permits in Mount Vernon. Liner replacement, structural masonry repair, or alterations to the chimney configuration may require a permit from the City of Mount Vernon Building Department, and we handle that paperwork when it's needed. We know the local inspectors and the code requirements that apply to homes in Westchester County versus the Bronx. If your project needs permitting, we tell you upfront and include the cost in your written estimate - no surprises on the bill.

We're available Monday through Sunday, 7:30 AM to 8:00 PM. Calls are answered by a live coordinator who connects you with our local team. We're not open 24/7, and we don't promise middle-of-the-night dispatch. For urgent situations - a chimney fire in progress, carbon monoxide alarm activation, or structural damage from a storm - call 911 first, then contact us during our hours to schedule inspection and repair. For routine sweeps and inspections, we book appointments across our full weekly schedule and we'll be there when we say.

Evacuate the house and call the Mount Vernon Fire Department immediately - even a small chimney fire can crack your flue liner and create a path for the next fire to reach your framing. After the fire department clears the scene, call us at (914) 246-5794 to schedule a level-2 camera inspection. We need to document liner damage before you use the fireplace again. Many chimney fires go undetected by the homeowner - a loud roaring noise, dense smoke, or flames visible at the chimney top are the signs. Don't use the system until it's been professionally inspected.

During peak season - September through November - we typically book one to two weeks out. In spring and summer, we often have availability within a few days. We serve Mount Vernon, Pelham, Bronxville, and nearby neighborhoods on a regular rotation, so we can usually find a slot that works without long delays. The best practice is to schedule your annual sweep in late summer, before the first cold snap has everyone calling at once. Call (914) 246-5794 to check current availability.

We apply the Keystone Standard to every job: 90 days, in writing, no arguing. If something we did isn't right, we come back and fix it. No paperwork, no runaround. For liner installations from Olympia Chimney and Gelco, the manufacturer's warranty runs longer - typically lifetime for residential stainless steel liners - and we register that coverage in your name. Our masonry repairs carry their own written guarantee period, which we specify in your estimate. We've honored this standard since opening our Mount Vernon branch in 2014 because a company that plans to be here in thirty years stands behind its work.

We show you the camera evidence and explain what we're seeing before recommending any repair. Nothing gets suggested without photos you can see for yourself. If the damage is hazardous and needs immediate attention, we tell you plainly. If it's something that can safely wait a season or two, we tell you that too - with a clear timeline for re-inspection. We've turned down repair work in Riverdale and City Island homes because the issue was minor and the homeowner's budget was tight that year. A square deal means honest assessment, not upselling.

No honest sweep can guarantee that. What we guarantee is that we'll remove the creosote and obstructions present at the time of service, inspect for visible defects, and report our findings accurately. Preventing chimney fires also depends on how you burn - seasoned hardwood, proper air supply, and avoiding overloading the firebox. We educate every Mount Vernon customer on best practices during our visit. The Keystone Standard covers our workmanship, not events outside our control, and we don't make promises that would mislead you about your own responsibilities.

Call us. Under the Keystone Standard, if our work wasn't done right, we come back and make it right. No arguing, no paperwork shuffle. Russell Haines reviews every callback personally. In twelve years serving this community, we've learned that most dissatisfaction comes from unclear expectations - which is why we explain what we're doing, show you what we found, and put everything in writing. If we missed something, we own it. That's the "Standing behind it" in our K.E.Y.S. code.

Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Mount Vernon since 2014.