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Shamrock Chimney
Shamrock Chimney Sweep

Fireplace Inserts

Professional fireplace insert installation — transform your drafty open fireplace into an efficient, high-output heating system with wood, gas, or pellet inserts

$2,500 - $6,000+ 4 - 8 hours CSIA Certified
Fireplace Inserts service by Shamrock Chimney

About Our Fireplace Insert Service

An open masonry fireplace is beautiful — but it's one of the least efficient heating systems ever designed. With 85-90% of heat going straight up the chimney and cold air being pulled into your home through the open flue, an open fireplace can actually make your house colder. A properly installed fireplace insert transforms this energy waste into an efficient, high-output heating system — delivering 70-85% of the fuel's energy as usable heat while maintaining the warmth and ambiance you love.

The Right Insert for Your Home

We don't push the most expensive option. During our assessment, we evaluate your fireplace dimensions, your home's heating needs, your lifestyle preferences, and your budget. Some homeowners need maximum heat output — they get a high-BTU wood insert. Others want push-button convenience — a gas insert is ideal. Still others want automated operation — pellet inserts deliver. We match the insert to your actual needs.

What Sets Our Insert Installation Apart

Every insert installation includes proper liner sizing and installation — not just sliding the insert into the firebox. An insert without a properly sized liner is inefficient and potentially dangerous. We calculate liner diameter based on the insert manufacturer's specifications and your chimney's height and configuration. We insulate the liner for optimal draft performance. And we seal the surround to eliminate air leaks that reduce efficiency.

Complete Installation, Not Just Delivery

Some companies sell inserts and leave installation to you or a handyman. We provide complete professional installation — liner, insert fitting, surround, blower connection, gas line (for gas inserts), testing, and homeowner training. This turnkey approach ensures your insert operates at peak performance from day one and meets all manufacturer warranty requirements and local building code.

Warranty & Documentation

Your insert installation includes complete documentation — manufacturer warranty registration, liner warranty, installation photographs, and our workmanship guarantee. This documentation satisfies building inspection requirements, insurance standards, and protects your manufacturer warranty. Improper installation can void manufacturer warranties — our professional installation preserves your coverage.

Why Professional Insert Installation Matters

A fireplace insert is a combustion appliance that generates extreme heat inside your home. Improper installation creates fire hazards, carbon monoxide risks, and efficiency losses. The insert must fit the firebox with proper clearances. The liner must be correctly sized for the insert's flue gas characteristics. The surround must be sealed to prevent air leaks. And the system must draft properly to prevent combustion gases from entering your living space. Professional installation ensures all of these requirements are met.

Investment That Pays for Itself

A fireplace insert typically pays for itself in heating cost savings within 3-5 years — faster if you currently use the open fireplace as supplemental heat. Beyond cost savings, inserts add property value by converting an inefficient open fireplace into a functional heating system. The combination of efficiency gains, increased home value, and reduced heating costs makes a fireplace insert one of the smartest home improvement investments.

Why Choose Our Insert Installation?

Transforms an inefficient open fireplace (10-15% efficiency) into a 70-85% efficient heating system
Wood, gas, and pellet insert options to match your heating needs and lifestyle preferences
EPA-certified wood inserts produce dramatically less smoke and particulate emissions
Proper liner installation included — your insert connects to a correctly sized, insulated flue
Blower systems distribute heat throughout the room, not just up the chimney
Professional fitting and sealing eliminates drafts, smoke spillage, and energy loss

Our Insert Installation Process

1

Fireplace Assessment

We measure your existing fireplace opening, assess the firebox condition, inspect the chimney flue, and evaluate your home's heating needs. We determine which insert types will fit your fireplace dimensions and discuss wood, gas, and pellet options — helping you choose the right insert for your lifestyle, budget, and heating goals.

2

Insert Selection & Sizing

Based on your fireplace dimensions and heating needs, we recommend properly sized inserts from leading manufacturers. We calculate BTU requirements for your space, ensure the insert fits your firebox opening with proper clearances, and select the matching liner diameter for optimal draft performance. Oversized or undersized inserts create problems — precision matters.

3

Professional Installation

We install your insert with proper hearth protection, connect it to a correctly sized stainless steel liner running the full length of your chimney, insulate the liner for optimal performance, and install the appropriate surround and trim. Gas inserts receive proper gas line connection by licensed professionals. Every installation meets manufacturer specifications and local code.

4

Testing & Training

We test the complete system — draft performance, blower operation, gas ignition (for gas inserts), and sealing integrity. We then walk you through operation, maintenance requirements, and safety practices. You receive warranty documentation, installation records, and our contact information for any future questions.

Fireplace Insert FAQs

A fireplace insert is designed to fit inside an existing masonry fireplace opening — essentially converting your open fireplace into an enclosed, efficient heating appliance. A freestanding stove sits in front of or away from the fireplace and connects to the chimney with a stovepipe. Inserts use your existing fireplace as the installation platform, making them ideal for homeowners who want improved efficiency without losing their fireplace's aesthetic integration into the room.

An open fireplace operates at roughly 10-15% efficiency — meaning 85-90% of the heat goes up the chimney. A modern EPA-certified wood insert operates at 70-80% efficiency. A gas insert operates at 75-85% efficiency. This dramatic efficiency improvement can significantly reduce heating costs, especially if you currently use the fireplace as supplemental heat. Many homeowners report 20-40% reductions in winter heating bills after insert installation.

Yes. Virtually all fireplace insert installations require a new stainless steel liner sized specifically for the insert. The insert's smaller flue gas volume requires a smaller-diameter liner than your existing clay tile flue. Using the existing oversized flue causes poor draft, excessive creosote, and potential carbon monoxide issues. We include properly sized liner installation with every insert job.

Each fuel type has advantages. Wood inserts provide the highest heat output and authentic fire experience, but require manual loading and chimney sweeping. Gas inserts offer push-button convenience, precise temperature control, and minimal maintenance, but require a gas line. Pellet inserts provide automated fuel feeding and consistent heat, but require electricity and pellet storage. We help you choose based on your priorities — convenience, heat output, cost, and aesthetics.

Most fireplace insert installations take 4-8 hours, completed in a single day. This includes liner installation, insert fitting, surround installation, and testing. Gas insert installations may require additional time for gas line connection. Complex installations — such as those requiring firebox modifications or extensive surround work — may extend to a second day. We provide a clear timeline during the assessment visit.

Why Professional Insert Installation Matters

A fireplace insert is a high-heat combustion appliance installed inside your home. The stakes of improper installation are severe — fire hazards from inadequate clearances, carbon monoxide exposure from improper venting, and efficiency losses from incorrect liner sizing. Professional installation by CSIA certified technicians ensures safe, efficient, code-compliant operation.

Sizing Science for Maximum Performance

Insert performance depends on precise matching between the insert's BTU output, your firebox dimensions, the liner diameter, and your chimney's height. Our technicians calculate these relationships using manufacturer specifications and combustion engineering principles — not guesswork. Proper sizing means maximum heat delivery, clean burning, and reliable draft.

Inserts Are Ideal for Northeast & Midwest Winters

In the Northeast and Midwest, long winters make heating efficiency critical. An open fireplace wastes energy and pulls heated air out of your home. A properly installed insert reverses this equation — delivering substantial heat while sealing the chimney from cold air infiltration. For homeowners in our 21-state service area, an insert transforms a winter liability into a winter asset.

Signs You Should Consider an Insert

  • Your open fireplace makes the room colder — cold air being pulled through the flue
  • High heating bills despite using your fireplace regularly
  • Smoke entering the room from your open fireplace
  • You want the ambiance of a fire with real heating capability
  • Your existing fireplace damper doesn't seal properly when closed
  • You'd like push-button fire convenience (gas insert)
  • Environmental concerns about open-fireplace smoke emissions

The Shamrock Insert Installation Difference

Complete turnkey installation with proper liner, testing, and training — not just appliance delivery

Complete Turnkey Installation

We handle everything — liner, insert, surround, connections, testing, and training. No subcontractors, no partial installations, no "you figure out the rest." One visit, one team, completely done.

Properly Sized Liner Included

Every insert installation includes a correctly sized stainless steel liner. An insert without a proper liner is inefficient and dangerous. We never cut this critical corner.

Warranty-Preserving Installation

Improper installation voids manufacturer warranties. Our CSIA certified installation meets all manufacturer specs, preserving your full warranty coverage and ensuring code compliance.

Fireplace Insert Service Areas

Professional fireplace insert installation across 21 states

Don't see your area? We likely serve your community. Call us to confirm insert installation availability in your location.

Ready to Transform Your Fireplace?

Call now for a free insert assessment — discover how much heat and efficiency you're missing

(888) 737-0903