# Gas Fireplace Conversion in Denver — Space Fireplace Services
Most existing fireplaces in Denver were built for wood. Most current homeowners do not want to haul wood, store wood, or clean ash — and many of the original masonry fireboxes have not been used in years. Space Fireplace Services converts those wood-burning fireplaces to clean, code-compliant gas across Cherry Creek, Hilltop, Polo Club, Belcaro, Country Club, Washington Park, LoHi, RiNo, Greenwood Village, and Castle Pines. Conversion is the single most-requested service we do in the Denver market, and for a reason: it transforms a fireplace from a decorative feature you never light into a focal point you actually use, without losing the character of the original masonry. Denver gets real winter — months of single-digit nights, dry mountain cold, and a culture built around using the fireplace daily from October through April. That changes how we spec units here: BTU output, sealed-combustion direct-vent designs, and altitude-corrected gas orifices all matter more in Denver than in any of our other markets. The conversion process keeps your original brick, stone, and mantel intact whenever possible. We pull the permit, run a new gas line from the meter or stub, re-line the existing flue with a properly sized stainless liner when needed, install either a gas log set or a sealed direct-vent insert depending on your design and heat goals, and pressure-test the gas line for code inspection. Every conversion includes remote-start ignition, manufacturer warranty registration, and a walk-through so you know how to operate, service, and shut down the unit through every season.
## How a Denver Gas Conversion Works
Every conversion we do follows a clear sequence — designed to keep your original firebox visible whenever the masonry allows, and to leave you with a unit that meets current code and operates safely for decades.
### Step 1 — Firebox and Flue Inspection
We open the existing damper, run a flue camera up the chimney, and assess the firebox masonry, the smoke chamber, and the flue liner. The result tells us three things: whether the firebox is salvageable, whether the flue needs re-lining for gas service, and what insert or log set will draft properly.
### Step 2 — Conversion Path Decision
There are two main conversion paths. The first is a vented gas log set — decorative flame inside the original firebox, modest heat output, lowest cost. The second is a sealed direct-vent gas insert — significantly more heat, glass-front, remote start, more expensive. We walk you through both based on how you intend to use the fireplace.
### Step 3 — Gas Line Permit and Install
A Texas-licensed plumber (or state-equivalent) pulls the gas permit, runs the line from the meter or nearest stub to the firebox, installs a code-compliant shutoff inside the firebox, and pressure-tests the line for inspection. City and County of Denver residential mechanical permits, Greenwood Village, Cherry Hills Village, and the surrounding municipalities. Denver’s high-altitude conditions require gas appliance derating per manufacturer specs and an altitude-orifice swap on most units shipped from sea-level distribution.
### Step 4 — Flue Re-Line If Needed
If the existing flue is unlined, undersized, or compromised, we install a properly sized stainless-steel flexible liner from the firebox up through the chimney to a new termination cap.
### Step 5 — Set the Unit
The gas log set or direct-vent insert is set into the firebox. Electrical for ignition and blower (if applicable) is run. Glass is installed on direct-vent units.
### Step 6 — Commission and Walk-Through
We fire the unit, run the burn-in, verify flame envelope and gas pressure, register the manufacturer warranty, and walk you through operation.
## Conversion Costs in Denver
A vented gas log set conversion in an existing usable firebox is the lowest-cost path — typically a one to two-day project. A direct-vent insert with flue re-line is more involved and runs higher. A full firebox replacement with a new sealed unit is the most extensive path and may overlap with a fireplace installation project.
## Common Conversion Scenarios in Denver
high-BTU direct-vent linear gas fireplaces sized for genuine winter heat, see-through gas units between great rooms and mountain-view rooms, two-sided fireplaces for open-plan ranch remodels, and high-altitude-rated electric linears for the modern townhome market. The most common conversion scenario across Cherry Creek, Hilltop, Polo Club, Belcaro, Country Club, Washington Park is a 1990s-or-earlier wood-burning brick firebox that has not been used in years, where the homeowner wants the visual of the original brick but the convenience of remote-start gas. That conversion lands in our quote sheet every week.
## Why Denver Homeowners and Designers Choose Space Fireplace Services
Space Fireplace Services is not a chimney sweep that also installs gas units. We are a dedicated fireplace installer — design-led, build-experienced, and embedded in the architecture and interior-design trade across every market we serve.
In Denver, that means we understand the Cherry Creek and Hilltop mid-century ranches and contemporaries, Country Club historic Tudors and Georgians, mountain-modern new construction in Greenwood Village and Castle Pines, and the loft conversions and modern townhomes in LoHi and RiNo that defines the residential inventory across Cherry Creek, Hilltop, Polo Club, Belcaro, Country Club, Washington Park. We know which units fit which walls, which manufacturers stand behind their warranties, and which framing decisions made before drywall save the project from rework after drywall.
We work with Cherry Creek and Hilltop designers, Denver mountain-modern architects, and the custom-home builders working in Castle Pines, Greenwood Village, and the Front Range foothill communities. We coordinate with framing, drywall, gas, electrical, roofing, and surround trades on every install — and on most projects we are the single point of contact for the homeowner from walk-through through final commissioning. That coordination is what separates a fireplace that works on day one from a fireplace that gets a service call on day thirty.
Our certifications include NFI Gas Specialist on the lead installer roster, NFPA 211 compliance on every install, and state-licensed gas and electrical trades on staff or on our regular subcontractor bench. Our manufacturer relationships include Heat & Glo, Mendota, Napoleon, Town & Country, Valor, Stuv, Spartherm, Ortal, and European Home — we are an authorized service center for the brands we install most often.
The Denver fireplace market has its own rhythms. Denver gets real winter — months of single-digit nights, dry mountain cold, and a culture built around using the fireplace daily from October through April We work that rhythm year-round, scheduling new installs in the spring and summer when lead times are friendlier, handling service and conversion work through the fall ramp, and covering emergency repairs through the heart of winter.
## Frequently Asked Questions
**How long does it take to convert a wood-burning fireplace to gas in Denver?**
A straight gas-log conversion in an existing usable firebox is a one to two-day project. A direct-vent insert install with flue re-line runs three to five days. The quote spells out the exact schedule.
**Will the conversion keep the look of my original brick or stone firebox?**
Yes. Gas log conversions sit inside the original firebox and the brick or stone stays visible. Direct-vent insert installs introduce a glass front and a steel surround, which changes the look — we walk you through both options with photos before you decide.
**Do I need a permit to convert my fireplace to gas?**
Yes. Gas-line work is permit-required in every Denver municipality. City and County of Denver residential mechanical permits, Greenwood Village, Cherry Hills Village, and the surrounding municipalities. We pull the permit and coordinate the inspection.
**My chimney has not been used in years. Is it safe to convert?**
That is what the flue inspection answers. We run a camera up the chimney before quoting the conversion. If the flue is sound, we proceed. If it needs re-lining for gas service, we re-line with stainless. If the masonry is structurally compromised, we tell you honestly and discuss alternatives.
**What is the difference between vented gas logs and a direct-vent insert?**
Vented gas logs sit in your existing firebox, look closest to a traditional fire, throw modest heat, and require the damper to stay open during operation. Direct-vent inserts are sealed glass-front units that throw significantly more heat, are more efficient, and operate with the damper sealed. Inserts cost more and look more contemporary.
**Can you convert my fireplace if I do not currently have a gas line in the room?**
Yes. Running a new gas line from the meter or nearest stub to the firebox is part of every conversion where the line does not already exist. The work is done by a licensed plumber on our team.
**How does altitude or local code affect the conversion in Denver?**
Altitude derating on gas appliances, sealed-combustion designs to handle dry Front Range air, and chimney terminations engineered for snow load and ice-damming. We address those market-specific factors in the quote and the install.
## Cozy at Home in Denver
A wood-burning fireplace you never use is wasted space. A gas conversion turns it into a focal point you light on a Tuesday night with a remote, without losing the character of the original masonry. Space Fireplace Services handles every conversion across Denver as a single trade — permit, gas line, flue re-line, unit install, and walk-through. Start with a free inspection.