Gas fireplace venting done by the manual in Corner Lake

Caps that sit on the wall face

One maker states plainly that a vent terminal may not sit recessed into the wall or the siding. A cap sunk into a thick finish can trap exhaust and change how the intake draws air.

Recessed caps usually come from a finish added after the fireplace went in, such as new siding or a thicker stucco coat. Our pros check the cap's position against the finished wall and list any extension part your manual allows to bring it back to the surface.

Add-ons the listing does not include

A gas fireplace is tested as a complete package. One manual says not to use a blower insert, heat exchanger insert or any other accessory not approved for that fireplace, and not to modify the fireplace under any circumstances.

The same manual lists unauthorized modification of the venting system as an action that voids the venting warranty. Our technicians remove parts that do not belong, restore the listed configuration and tell you which accessories your model does allow.

A cap that sits below the soil line

Below-grade terminations need drainage. For a vent that ends below ground level, one maker recommends a window well with adequate and proper drainage around the termination area, with gravel below and no backfill against the snorkel.

A well that fills with leaves or water can block the cap. Our crew checks the well, the drain and the clearance around the snorkel and writes down any cleanup or repair needed to keep the termination open.

What the written venting estimate lists

Our estimate breaks the vent job into the pieces you would want to see. Parts come by name, access openings and finish repairs sit on their own lines, and anything we could not reach is stated plainly.

Your approved price holds unless you sign off on added work. Nothing is hidden, and booking within 72 hours after the inspection puts 10% off on that same page.

• Listed vent parts for your model
• Wall, ceiling or roof access
• Finish repairs after access
• Test burn and leak check

Testing the fireplace after vent work

A vent repair is finished only when the fireplace runs well on it. After the work, our technicians light the unit, watch the flame against the manual's description and let it run long enough to see a steady burn and a normal shutdown.

Any gas connection that was disturbed is leak tested with a soap solution or an approved leak test spray, as manuals direct, and never with an open flame. You see the fireplace running before we leave.