Today’s high efficiency heating appliances require specialized venting and it is important to understand and design the venting requirements for your new product before purchasing or installing.

Wood stoves installations use one type of chimney system while manufactured fireplaces require their own specified venting.

Gas fired appliances may be listed to either B-Vent style venting or to a Direct Vent system while pellet stoves and inserts require something else all together!

Mazzeos is mid coast Maine's hearth specialists and authorized specialized stove and fireplace venting dealer and we can help you with your questions throughout the construction phase with our product lines.

Installing new or if you are renovating or upgrading an installation, Mazzeos can help you select and design the best options for a safe and approved installation.

For wood stove installations, we stock 22 gauge single wall stove pipe made in Maine as well as UltraBlack double wall interior venting for closer clearances to combustible surfaces.

Other product lines include ICC pellet venting,ICC Class A Systems and ICC Direct Vent Chimney Systems as well as Amerivent and DuraVent direct vent and B Vent gas venting plus a variety of chimney liner components.

Can I vent my woodstove and oil furnace on the same flue?

Most state codes do not allow more than one appliance to be installed on a single flue. While the state of Maine has recently reacted a new standard that does allow for multi venting of certain appliances on the same flue, most consumers have found that their homeowner insurers disallow tthis practice.. So No, you probably cannot vent any two appliances on one common flue.

A flue is a separate passage way within a chimney structure. Many chimneys have mutliple flues.

What happens to my power vented pellet stove when the power goes out?

Pellet stoves do require electrical power. Without power the auger stops feeding pellets to the burn pot and the heat distribution blower ceases to operate.

More significantly the power vent mechanics also stop working.. quite abruptly. Stoves installed without any vertical rise in their vent system which allows gravity to aid the venting of the combustion by-products from the still burning pellets in the burn pot will likely experience some smoke spill from the stove into the room.

While it is not a requirement ,most pellet appliance manufacturers recommend that your pellet stove's vent system be designed with a vertical rise of at least a few feet. Four feet of vertical rise is often the recommended minimum.

Keeping the horizontal run and number of elbows to a minimum will also aid performance.

Air Cooled vs. Solid Pack Chimney Systems

Air cooled chimneys were designed as an component for manufactured open wood burning fireplaces. These fireplaces are casual use appliances and produce very little heat.

Air cooled chimneys have no insulation; they stay cool by circulating cold air past the inner flue. As a result, the air colled flue stays colder than an insulated chimney resulting in reduced draft and a greater chance of creosote formation. They are not required to undergo severe chimney fire testing.

The solid pack chimneys are manufactured insulated chimney systems designed for wood and coal stoves as well as for many oil fired appliances. These appliances can produce high flue gas temperatures and can generate large amounts of creosote (which can cause a chimney fire) when tended improperly. These chimneys known in the industry as Class A Chimney Systems are certified to higher safety standard which requires that the chimney system to withstand repeated 2100°F chimney fires. They utilize high temperature insulation and warm up quickly mking them less likely to accumulate creosote.

Wood Stove Single Wall Stove Pipe

Your wood stove manual and installation guide is your best guide for selecting connector venting (stove pipe) and chimney requirements for your stove model.

Our Maine made 22 gauge stove single-wall connector venting is of the highest quality and is available in 4",5", 6" 7" and 8" diameters.

We stock 1 foot, 2 foot and 3 foot stove pipe lengths and 45 and 90 degree fixed elbows as well as a variety of other specialty stove pipe components including the Vermont Castings oval to round adapter starter piece of stove pipe.

Metric size stove pipe and custom stove pipe is also available.

Wood Stove Double Wall Stove Pipe

ICC's UltraBlack double-wall (type E) interior venting is designed to be used as a connector between a freestanding oil, wood or coal burning stove and a masonry or metal chimney.

When listed and approved by your stove's manufacturer this type of interior connector venting can reduce the required clearance to combustible surfaces as well as offering superior performance by keeping the interior stack tempertureatures higher with EPA wood burning stoves.

ULTRABlack is certified for 6" clearance with the following exceptions: when designated otherwise by the stove's testing lab or when ULTRABlack is used as the connector on a mobile home certified stove the clearance is determined by the installation instructions for the specific stove model being installed.

There are four primary advantages to ULTRABlack over single wall connector pipes:

  • It offers reduced clearance to combustible materials.
  • It is designed to last the lifetime of the stove and/or chimney system.
  • It offers reduced creosote formation.
  • It is certified for use with mobile home stoves.

Mazzeos stocks 6" and 8" Ultra Black venting.

Excel Class A Metal Chimney Systems

Your appliance manual or installation planning guide is your best source of information regarding the of your new appliance using a Class A Chimney System.

Mazzeos stocks professional grade ICC Excel Class A Chimney Systems.

ICC Excel Chimney ComponentsExcel Class A chimney systems are suitable for use on appliances that burn:

  • Wood
  • Oil
  • Coal
  • Gas
  • Charcoal

It is specifically engineered for wood burning stoves, fireplaces and residential furnaces.

Excel is tested and listed by Warnock Hersey Professional Laboratories to safety standard.

UL 103HT - The standard for solid and liquid fuel chimneys installed in the USA.

EXCEL is tested and listed to the ULC S-629 chimney standard. The ULC standard is generally considered the toughest residential chimney standard in the world. The USA standard requires the chimney to withstand three 10-minute 2100°F chimney fires. The Canadian standard requires the chimney to withstand three 30-minute chimney fires, three times longer than the USA.

EXCEL is the only 1 inch wall insulated chimney to pass the ULC standard.

EXCEL’s unique thermoplus insulation has an extremely high insulating value that helps to keep flue gasses hot. Creosote won’t condense in a hot flue.

EXCEL is the lightest weight insulated chimney of its kind on the market. This low thermal mass enables it to heat up quickly, reducing creosote formation. And EXCEL’s light weight helps make it the easiest chimney to install.

EXCEL incorporates continuous blanket insulation into a design which eliminates couplings between lenghts. This means there are no hot spots on the outside, or cool spots on the inside.

Gas Stoves & Gas Fireplace Venting

Gas Stoves and Gas Fireplaces are always listed and approved to specified vent systems by type and by manufacturer.

Only the listed vent systems for each model may be used. Always check your appliance's operating manual before selecting the venting system.

Do not substitute non-listed components and do not interchange components by different vent manufacturers.

Mazzeos stock Amerivent Direct Vent Systems, ICC DV gas venting and DuraVent Systems.

These systems are superior in design, construction, and performance for venting direct vent hearth appliances for both side-wall venting as well as conventional through-the-roof vent installations.

Our direct vent systems are available in factory painted matte black finish as well as galvanized components for areas not requiring a finish such as in attics and above the roof line.

ICC Pellet Stove Venting

Setting a new standard for Pellet Vent performance, appearance and ease of installation.

EXCELPellet Design features:

Laser welded stainless steel flue resists corrosion from all agricultural products including corn.

Laser welded galvalume steel outer casing. The primary applications for galvalume are automotive and metal building cladding. It is much more corrosion resistant than galvanized and is designed to be painted.

Lifetime warranted pure silicone gasket is 100% leak proof eliminating the need for field application of silicone.

Smooth clean exterior finish looks like single wall pipe.

Very easy to paint in the field.