Gas Fireplace Installation Seattle, WA

Gas fireplace installation is the complete job of putting a new gas-burning fireplace into your home: choosing the right unit and venting type, building or preparing the opening, running the vent through the wall or roof, coordinating the gas supply with a licensed gas fitter, pulling the permit and passing inspection. It is for homeowners who want a new fireplace where there was never one, who are finishing a basement or addition, or who are replacing a worn-out unit with a new appliance rather than patching the old one.

This is different from our Gas Fireplace Conversion page, which covers turning an existing wood-burning fireplace into a gas one, and from Gas Fireplace Insert, which is specifically about fitting a sealed insert into an existing masonry firebox. Gas Log Installation is simpler still: a log set placed in an existing open fireplace. If you are starting from a blank wall or a new build, you are on the right page.

James Chimney Sweep has served the Puget Sound for more than 25 years, is CSIA certified, and is licensed, bonded and insured in Washington. We plan the whole installation, handle the venting and clearances ourselves, and bring in a licensed gas fitter for the line and connections so the finished fireplace is safe, permitted and ready to use.

Timing & Safety

When installation makes sense

A new installation is the right call when:

• There is no fireplace in the room and you want one
• The existing gas unit is obsolete, damaged beyond economical repair or no longer meets code
• You are building an addition or finishing a basement and want the vent planned into the framing
• You want a sealed, efficient heater rather than an open decorative flame

Something smaller may serve you better when:

• Your current gas fireplace works but has a single failed part. Our Gas Fireplace Repair, Gas Valve Repair, Pilot Light Repair and Gas Burner Replacement pages cover those fixes.
• You have a sound masonry wood fireplace and just want gas. Gas Fireplace Conversion or Gas Fireplace Insert will usually be less disruptive than a new build.
• You mainly want the look of a fire in an open hearth. Gas Log Installation may be all you need.

Safety considerations

If you ever smell gas, leave the house immediately and call your gas utility or 911 from outside. Do not operate switches or appliances on the way out. Gas lines, shutoffs and valves are only serviced by a qualified, licensed technician; we never ask homeowners to touch them.

• Every gas fireplace we install is permitted and inspected. Unpermitted gas work can void insurance and creates problems at resale.
• Vent clearances to windows, doors, soffits, decks and property lines follow the manufacturer's listing and the mechanical code; we verify them before we cut.
• We install a carbon monoxide alarm check as part of commissioning and recommend CO alarms on every level of the home.
• Glass fronts on direct-vent units get extremely hot. Ask us about a barrier screen if there are small children or pets in the home.
• NFPA 211 recommends annual inspection of all fireplaces and vents, including gas. Our Gas Fireplace Cleaning page explains the yearly service.

Seattle & Puget Sound conditions

Seattle and the Puget Sound reward sealed direct-vent fireplaces. Our long, damp heating season means a fireplace gets used for months, so efficiency and not pulling conditioned air out of the house actually matters. Rain is the main installation concern: a horizontal vent termination on a wet exterior wall has to be flashed and sealed correctly, and we pay attention to where roof runoff and prevailing weather hit the cap. Vertical runs through older roofs in Seattle, Tacoma and Everett need proper storm collars and flashing that will stand up to moss growth and years of rain. On waterfront homes, salt air corrodes vent caps and exterior terminations faster, so we choose materials accordingly. Many older homes in King, Pierce and Snohomish counties also have undersized or aging gas supply, so the gas fitter's capacity check is not a formality; it is often the detail that decides where and how big the fireplace can be.