Fireplace and Chimney Service in Castle Rock, Colorado
Castle Rock is the Douglas County seat and, at about 6,224 feet, the highest town we serve along I-25. We inspect its fireplaces and chimneys for free.
Castle Rock is named for the castle-shaped butte near the center of town. It was founded in 1874 and incorporated in 1881, and stone, not gold, is what settled it: the town had a busy rhyolite-quarrying industry in the late 1800s and early 1900s. Today Castle Rock is a home rule town, the county seat of Douglas County and its most populous municipality, with 73,158 residents at the 2020 census. Most of that population arrived recently, and most of the houses are just as new.
Census figures (ACS 2024) show 71 percent of Castle Rock homes built in 2000 or later and a median build year of 2007, newer than any other town in our Census comparison. Gas heats about 76 percent of homes. Most were built after Colorado's 1993 rule that a new fireplace in the metro restriction area be gas, electric or a certified clean-burning unit, so the typical Castle Rock fireplace is a direct-vent gas unit or a factory-built firebox with a metal flue in a framed chase. That shapes everything we check.
Gas fireplaces at 6,224 feet
Gas appliances typically lose about 4 percent of their input for every 1,000 feet above 2,000 feet (ACHR News). At Castle Rock's elevation that is roughly 17 percent, noticeably more than in Denver. A gas fireplace or insert that isn't set up for that can burn yellow and lazy, soot the glass and logs, or keep dropping its pilot, and a badly tuned burner is also a carbon monoxide concern.
We check the burner, pilot, glass seal and vent at the free inspection. A yearly service typically runs $150 to $350, a pilot, thermocouple or igniter repair $100 to $350, and a valve or control board $300 to $1,000.
Hail on the chase
On a factory-built chimney the top of the chase is a sheet-metal cover, and the Front Range sits in Hail Alley; NOAA says Nebraska, Colorado and Wyoming usually have the most hailstorms in the country. A dented cover holds water, rusts and leaks into the chase. A new chase cover typically runs $300 to $700 and a cap $250 to $850. We photograph the damage so you can give it to your insurance adjuster.
Wood stoves and burn days
Castle Rock is below 7,000 feet and inside the state's restriction area, so open wood fireplaces can't be used on air-quality Action Days, November through March. The state health department adds that anything you buy or install in the seven-county metro must meet current emission standards; the 7,000-foot exemption covers use only, not sale or installation. A certified wood stove install typically runs $3,000 to $8,000 and a pellet stove $1,600 to $4,100.
Where we work in Castle Rock
Downtown Castle Rock · The Meadows · Crystal Valley Ranch · Red Hawk · Plum Creek · Founders Village · Terrain
FAQ
Castle Rock chimney questions
Does altitude really matter for my gas fireplace?
Yes. At about 6,224 feet a gas appliance loses roughly 17 percent of its input under the usual derate rule. If the unit isn't set up for it, you get yellow flames, soot and pilot trouble. We check the setup at the free inspection.
Do I have to follow the no-burn days in Castle Rock?
Yes. Douglas County below 7,000 feet is in the restricted area, so an open wood fireplace can't be used on Action Days. Gas fireplaces, EPA Phase III stoves and inserts and approved pellet units are exempt.
How often should a gas fireplace be serviced?
Once a year. NFPA 211 calls for a yearly inspection of chimneys and vents, and a gas unit also needs its pilot, burner and glass seal checked. A yearly service typically runs $150 to $350.
When can you come out?
Sunday through Friday, in 3-hour windows: 8–11, 11–2 or 2–5. We call to confirm before the visit. We are closed Saturday.
Book online
Book in Castle Rock. The inspection is free.
Free inspection in a 3-hour window: 8 to 11, 11 to 2, or 2 to 5. We call to confirm before we arrive.