State Registration No. MURPHC831R6
23632 Highway 99, Suite F-360
Edmonds, WA 98026
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Firebox Repairs in Seattle, WA

The "Condensate Eliminator"
  • Stop Condensation & Deterioration
  • Superior Strength
  • Corrosion Resistant
  • Tough 2-Ply Alum. Construc.
  • Gas-Tight Patented Seam
  • Flexibility Handles for Challenging Chimneys
  • All Components in 1 Kit
  • Size 3" through 12"
  • Since 1980!


  • Why is a Chimney Liner Necessary?
  • Stop Chimney Deterioration!
  • What Material Should be Used for Gas Liners?
  • Approval Listing?
  • Who Should Install/Maintain a Gas Liner?

Why is a Chimney Liner Necessary?

Gas-fired heating appliances produce low-temperature, high-moisture-content flue gas, which collects as acidic condensate on the inside of oversized, cold masonry chimneys. It is this condensate that is the primary cause of masonry chimney deterioration, which creates a serious health hazard, as well as costly repairs.

Stop Chimney Deterioration!

Installing a lightweight, properly sized metal chimney liner will help create efficient, condensate-free venting. Insulating the liner is recommended and will further enhance operation of the venting system.

What Materials Should be Used for Gas Liners?

Aluminum, with a half-century usage history, has proven to be an economical, effective material for venting gas-fired equipment. Stainless steel is a good choice as well, but is substantially more expensive.

Approval Listing?

Listings by approved testing agencies indicate that the gas liner has undergone rigorous testing to ensure that it is suitable for its intended use.

AppWho Should Install/Maintain a Gas Liner?

A qualified heating or chimney contractor is the best person to install this type of product. There are several technical details that must be addressed before a liner is installed.

A gas liner should be checked at least once a year by a qualified technician to ensure that the system is venting properly without condensation occurring.


We use similar procedures for Oil Furnaces as with our Gas Furnaces, except stainless steel piping is required. It is very important that all oil furnaces have a stainless steel liner installed, as it protects the chimney and, most importantly, it is a health hazard if fumes are getting back into the house due to a blockage of the chimney from deterioration.