Fireplace and stove insert installation in Longmont typically costs $1,500–$5,000, depending on the unit, chimney type, and whether you need masonry work. Always check with Longmont’s building department for permits first, some projects require them even for gas inserts. Start with a chimney inspection to confirm your flue is safe for the new unit, especially if your home is in an older neighborhood like downtown or near the St. Vrain Creek area where older masonry chimneys are common.
1. What is a fireplace & stove insert installation, and why do Longmont homeowners choose it?
A fireplace and stove insert installation replaces your existing fireplace opening with a sealed, energy-efficient unit that burns cleaner and heats better. In Longmont, where winter temperatures can drop below freezing and older homes often have inefficient fireplaces, inserts are a popular upgrade. They reduce heat loss, improve safety, and can even add value to your home, especially in historic neighborhoods like the Downtown Historic District or newer developments near the foothills. Unlike traditional fireplaces, inserts are designed to maximize heat output while minimizing creosote buildup, which is critical in Longmont’s dry climate where chimney fires are a real risk the Chimney Safety Institute of America (CSIA)|https://www.csia.org/)). If your current fireplace feels drafty or smoky, an insert could be the solution. However, not all chimneys are compatible, older masonry chimneys may need repairs or a liner before installation.
2. The 3 types of fireplace & stove inserts, and which works best in Longmont’s climate
Longmont’s varied housing stock, from historic brick homes to modern ranch-style houses, means you’ll find three main types of inserts suitable for the area: - Wood-burning inserts: Best for traditional fireplaces in older homes, but require proper ventilation and regular chimney sweeping (at least twice a year in Longmont’s dry seasons). These are popular in neighborhoods like the Old Town area, where historic charm is preserved. - Gas inserts: Ideal for homes without a chimney or with outdated flues, as they vent through PVC pipes. They’re low-maintenance and efficient, making them a great choice for newer homes or condos near the foothills. However, they require a clean gas line inspection before installation. - Pellet inserts: A growing favorite in Longmont for their automation and eco-friendliness. They burn pellets, which produce minimal creosote, reducing chimney maintenance. However, they need electricity and a dedicated storage space for pellets, which can be tricky in smaller homes.
If you’re unsure which type fits your home, start with a Level 2 chimney inspection explained here to check your flue’s condition. Many Longmont homeowners skip this step and regret it later when their new insert doesn’t work as expected.
3. Fireplace & stove insert installation costs in Longmont: What to budget for
Costs vary widely based on the type of insert, chimney condition, and whether you need additional work like masonry repairs or a new liner. Here’s a realistic breakdown for Longmont homeowners:
| Item | Low-End Cost | Mid-Range Cost | High-End Cost | Notes | |------------------------------|------------------|--------------------|-------------------|--------------------------------------------| | Basic wood-burning insert | $1,500 | $2,500–$3,500 | $4,500+ | Includes labor but assumes chimney is ready. | | Gas insert (vented or direct)| $2,000 | $3,000–$4,000 | $5,000+ | Direct-vent models cost more. | | Pellet insert | $2,500 | $3,500–$5,000 | $6,000+ | Requires electrical upgrades in some cases.| | Chimney relining (if needed)| $1,000 | $2,000–$4,000 | $6,000+ | Older masonry chimneys often need this. | | Permit fees (Longmont) | $50–$150 | $150–$300 | $300+ | Varies by project scope. |
Pro Tip: If your chimney is over 20 years old or shows signs of cracks, water damage, or a sagging crown, budget an extra 30–50% for repairs. Many Longmont homeowners in areas like the Table Mesa neighborhood discover this too late, always get a pre-installation chimney inspection from a licensed sweep to avoid surprises. Gas inserts often require a carbon monoxide detector if your home doesn’t already have one, adding $50–$150 to the cost.
4. Do you need a permit for fireplace & stove insert installation in Longmont?
Yes, most fireplace and stove insert installations in Longmont require a permit, especially if you’re modifying the chimney, adding a new vent, or installing a gas line. The Longmont Building Department Longmont, CO enforces International Residential Code (IRC) standards, which means: - Wood-burning inserts usually need a permit if the chimney is altered or if the insert’s heat output exceeds 100,000 BTUs. - Gas inserts almost always require a permit, even for direct-vent models, because they involve gas line work. - Pellet inserts may need a permit if they require electrical upgrades or a new vent pipe.
How to get a permit in Longmont: 1. Submit plans to the Longmont Building Department (fees: $50–$300). 2. Schedule an inspection before installation begins. 3. Get a final inspection after the work is done.
Avoid fines and delays: Many DIYers or unlicensed contractors skip permits, but Longmont’s code enforcement is strict. If you’re unsure, hire a licensed HVAC or chimney professional like ours to handle permits for you, it’s often worth the extra cost to avoid headaches. For gas inserts, you’ll also need a certified gas technician to sign off on the work.
5. 5 steps to prepare your Longmont home for a fireplace & stove insert installation
Skipping prep work is the #1 reason Longmont fireplace installations fail. Follow these steps to ensure your project goes smoothly: 1. Inspect your chimney first. If your chimney is old or damaged, it may need a new liner or masonry repairs before installation. Many homes in Longmont’s older neighborhoods (like those near the railroad tracks) have brick chimneys that weren’t built for modern inserts. 2. Check your gas line (if applicable). For gas inserts, a plumber licensed in Colorado must inspect the gas line for leaks or corrosion. Longmont’s dry climate can cause pipes to degrade faster. 3. Measure your fireplace opening. Inserts must fit snugly, too much space means heat loss, and too little means poor airflow. Most Longmont fireplaces are standard sizes, but older homes may have irregular openings. 4. Clear the area around the fireplace. You’ll need at least 3 feet of clearance for safety, especially if you’re installing a wood-burning model. This is critical in tight Longmont homes where fireplaces are often tucked into living rooms. 5. Choose the right fuel type for your lifestyle. If you’re in a condo or small home near the foothills, a pellet insert might be more convenient. If you love the smell of wood, a wood-burning insert is ideal, but be prepared for more maintenance.
Local Tip: If your home is in a wildfire-prone area (like parts of southern Longmont near the foothills), check with the Boulder County Fire Department about any additional clearance requirements for your insert.
6. The best fireplace & stove insert brands for Longmont’s climate
Not all inserts perform equally in Longmont’s dry, windy winters and occasional high-elevation snow. Here are the top brands our team recommends, based on local homeowner feedback and efficiency: - Jøtul (wood-burning): A favorite in Longmont for its classic design and high heat output. Their F 603 model is a top pick for homes with traditional fireplaces. - Napoleon (gas): Reliable and efficient, with models like the FX1000 that work well in Longmont’s variable weather. Their direct-vent options are great for homes without a chimney. - Harman (pellet): Known for durability and low maintenance, ideal for Longmont homeowners who want automation. The PelletMax series is a solid choice. - Edwards (wood-burning): Offers EPA-certified models with low emissions, which is important in Longmont’s air-quality-conscious community. Their EPA-approved inserts meet strict standards the U.S. Environmental Protection Agency.
Avoid cheap, unbranded inserts: Many homeowners in Longmont regret buying no-name models from online retailers, poor craftsmanship leads to creosote buildup, inefficient burning, and even chimney fires. Stick with CSIA-certified brands and installers like ours to ensure safety and performance. If you’re unsure which brand fits your home, ask for a free consultation here, we’ll help you match the right unit to your chimney and lifestyle.
7. Common mistakes Longmont homeowners make, and how to avoid them
Longmont’s mix of historic and modern homes leads to some predictable pitfalls when installing fireplace and stove inserts. Here’s how to steer clear of them: - Skipping a chimney inspection. Many homeowners assume their chimney is fine until they install a new insert and face poor draft or smoke issues. Always get a Level 2 inspection /blog/level-1-2-3-chimney-inspections-longmont-explained/ before buying an insert. - Choosing the wrong fuel type. Wood-burning inserts require more maintenance (sweeping, splitting wood) than gas or pellet models. If you’re not prepared for the upkeep, a gas insert might be a better fit for your lifestyle. - Ignoring clearance requirements. Longmont’s older homes often have tight spaces around fireplaces. If your insert doesn’t have enough clearance, it can overheat nearby walls or furniture, a fire hazard. Measure twice! - DIY installation without permits. Even if you’re handy, fireplace and stove insert installations in Longmont require permits for safety reasons. Fines for unpermitted work can exceed $500, and insurance may not cover damage if something goes wrong. - Not sealing the old fireplace. If you’re replacing a wood fireplace with an insert, the old opening must be properly sealed to prevent drafts and heat loss. Many Longmont homeowners forget this step, leading to higher heating bills.
Final Tip: If your home is in a floodplain (like areas near the St. Vrain Creek), confirm with the Longmont Building Department that your insert installation complies with flood-resistant building codes. Some inserts may need additional sealing or waterproofing.
| Type of Insert | Average Cost (Installed) | Additional Costs to Consider | Best For |
|---|---|---|---|
| Wood-burning insert | $2,500–$4,500 | Chimney relining ($1,000–$4,000), permit ($150–$300) | Traditional fireplaces in older Longmont homes |
| Gas insert (vented) | $3,000–$5,000 | Gas line inspection ($100–$200), CO detector ($50–$150) | Homes without chimneys or with outdated flues |
| Gas insert (direct-vent) | $3,500–$6,000 | Vent pipe installation ($300–$800), permit ($200–$300) | Condos, modern homes, or tight spaces |
| Pellet insert | $3,500–$6,000 | Electrical upgrades ($200–$500), pellet storage ($100–$300) | Automation-loving homeowners with space for pellets |
| Chimney relining (required for most inserts) | $1,000–$4,000 | Masonry repairs ($500–$2,000), inspection ($100–$200) | Older Longmont homes with unlined chimneys |
Frequently Asked Questions
My chimney is old and brick, can I still install a fireplace insert in my Longmont home?
Yes, but you’ll likely need a chimney liner first. Many Longmont homes built before the 1980s have unlined brick chimneys, which aren’t safe for modern inserts. A stainless steel liner (cost: $1,000–$3,000) is usually required. Start with a Level 2 chimney inspection /blog/level-1-2-3-chimney-inspections-longmont-explained/ to check for cracks or water damage before buying an insert.
Why does my Longmont gas insert keep smelling like gas even after installation?
This usually means there’s a gas leak or poor ventilation. Longmont’s dry climate can cause gas lines to dry out and crack over time. Never ignore gas smells, turn off the gas supply immediately and call a licensed plumber or our team. A small leak can lead to carbon monoxide poisoning, which is especially dangerous in tight Longmont homes. Always install a carbon monoxide detector near your insert.
I live in a condo near the foothills, can I install a direct-vent gas insert without a chimney?
Yes, direct-vent gas inserts are a great solution for condos and homes without chimneys. They vent through the wall or roof, eliminating the need for a traditional flue. However, you’ll still need a permit from Longmont’s Building Department and a certified gas technician to install the vent pipe. Check with your HOA first, some condo associations have rules about exterior modifications.
How long does a fireplace & stove insert installation take in Longmont?
Most installations take 1–3 days, depending on the type of insert and whether your chimney needs repairs. Wood-burning inserts with relining can take longer (up to a week) because the liner must cure. Gas inserts are usually faster (1–2 days) if the gas line is already in good shape. Plan for extra time if you’re working around Longmont’s winter weather, delays are common when crews can’t access your roof or chimney due to snow or ice.