If your wood-burning fireplace is drafty, inefficient, or rarely used, upgrading to a gas fireplace insert is one of the easiest ways to add warmth and value to your home. Whether you’re looking for energy savings, cleaner air, or just easier fireplace use, our gas heating inserts deliver efficiency, comfort, and modern convenience.
Chimney Scientists provides expert installation of gas fireplace inserts throughout the Greater Philadelphia area, including Montgomery, Bucks, Chester, and Delaware counties, along with Carbon, Lehigh, and Monroe counties in the Pocono region.
A gas fireplace insert is a self-contained, high-efficiency firebox designed to fit directly into your existing masonry or prefab fireplace. Unlike gas logs, which rely on the original fireplace structure, inserts are sealed systems that offer controlled heat output, reduced emissions, and stylish design options.
We install only sealed gas fireplace inserts and direct vent gas inserts, which safely vent combustion gases outside and pull in fresh air from the outdoors. This eliminates the need for a chimney damper while boosting efficiency.
Today’s high-efficiency gas fireplace inserts are designed to meet the needs of modern homes. Homeowners love them because they offer:
If you’re looking for a low-maintenance fireplace upgrade, energy-efficient gas inserts offer unmatched performance and ease of use.
At Chimney Scientists, we install direct vent gas inserts—sealed combustion systems that use a co-linear venting setup. These systems draw air in from the outside for combustion and vent exhaust gases back out through the same chimney or wall penetration.
Benefits of sealed and direct vent technology include:
This type of insert is ideal for homes with an existing chimney, and it’s the industry standard for gas fireplace conversions.
Our gas insert installation services include everything from venting and gas line setup to custom trim and surround finishes. Here’s what you can expect:
We handle the entire process in-house to ensure a smooth, code-compliant install with no surprises. You’ll be enjoying your new fireplace in no time.
If you’re tired of the mess and hassle of burning wood, our gas fireplace conversion service makes the transition easy. Whether you’re replacing a non-working system or just want a cleaner heat source, we can convert most traditional fireplaces into safe, efficient gas heating inserts.
We’ll evaluate your system and chimney to recommend either an insert or one of our gas fireplace logs, depending on your heating goals and budget.
We offer a curated selection of gas inserts for fireplaces from top manufacturers, available in a wide range of sizes, finishes, and BTU outputs. During your in-home consultation, we’ll help you choose the best fit for your vented gas fireplace insert based on:
Want a more rustic look? We also install wood stove inserts and offer full wood stove installation for homeowners who prefer a traditional feel.
Gas fireplace inserts require far less maintenance than wood-burning units, but routine upkeep is still important for performance and safety.
Here’s how to keep your insert in top shape:
Our team offers professional service and troubleshooting for all installed natural gas or propane units.
Chimney Scientists is your trusted local partner for gas fireplace insert installation across the Greater Philadelphia region. Whether you live in a city rowhome or a suburban split-level, we tailor each install to your home’s structure, venting needs, and aesthetic goals. We’re proud to serve all of the following counties:
Ready to transform your home with a beautiful gas fireplace insert? Contact us today for more information about our professional installation services.
A gas fireplace insert is a sealed firebox that fits into your existing fireplace, providing high-efficiency heat with a gas flame and no need for firewood.
Direct vent inserts work by using two vents—one to draw in outdoor air for combustion, and another to expel exhaust. This keeps indoor air clean and improves efficiency.
Yes, most high-efficiency gas inserts have 70–85% efficiency ratings and allow zone heating for frequently used rooms, reducing your overall energy use.
Yes, most traditional fireplaces can be converted using a sealed gas insert or vented gas log set. Our team will assess your fireplace and chimney to determine the best option.
Installation includes venting evaluation, gas line hookup, chimney prep, insert placement, and a full system check. We handle all permits and ensure code compliance.
Gas fireplaces require little maintenance, but we recommend you schedule maintenance at least once a year. Annual inspections and cleaning help ensure safe operation and extend the life of your unit.
