Gas fireplace venting checked and repaired in Vista East

When the inner pipe leaks exhaust into the air side

In a coaxial vent, exhaust travels in the inner pipe and fresh air in the outer one. If the inner pipe leaks, exhaust slips into the incoming air, and the fire starts breathing its own fumes.

One maker lists this as a cause when the pilot and main burner go out together while the fireplace is running, and the fix it gives is to find the leak and replace the defective section. Our technicians look for disconnected, damaged or unseated inner joints first, since those are the ones the room never shows.

The spill switch on a natural-vent unit

One B-vent fireplace manual shows a spill switch in the control wiring. Spill switches are safety devices mounted at the draft hood to detect exhaust spilling out because of a blocked vent or poor draft, and they shut the burner down when it happens.

One maker of these switches says that after a shutdown, the cause has to be found and corrected before the switch is reset. Our pros never bypass one. They look for the blockage, the short vent or the negative pressure behind it and quote the repair that removes the cause.

Blue flames that float off the burner

Flames that turn blue, lift off the burner and wander are sometimes called ghosting. One direct-vent manual ties it to insufficient oxygen reaching the fire and lists four checks for it.

Our crew works through those checks in Vista East before anything is replaced, starting with the easiest to reach.

• Cap installed correctly and free of debris
• Vent joints tight with no leaks
• No debris blocking the air intake at the back of the firebox
• Glass secured and latched

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.

Vent questions during a home sale

Home inspection reports often mention a gas fireplace vent in a line or two, a cap that looks close to a window or a pipe that could not be traced. Those notes deserve an answer that holds up.

Our specialists check the item against the fireplace manual and the Florida fuel gas code, explain whether it needs work and put the finding in writing. Buyers and sellers in Vista East both get a clear document, with upfront pricing for any repair.