What Z-Flex Realty, Inc. does

Z-Flex Realty, Inc. operates as the United States venting products division of The Novaflex Group, a diversified manufacturing conglomerate that also encompasses Flexmaster Canada Limited and Novaflex Hose. The company manufactures and distributes venting systems, chimney liners, gas vent systems, and HVAC ducting products serving residential, commercial, and industrial markets. Its product portfolio spans Z-Flex branded stainless steel and aluminum chimney liner kits for wood, oil, gas, and pellet applications, Z-Vent single and double wall gas vent systems for boilers, furnaces, and water heaters, Z-DENS polypropylene venting for high-efficiency condensing appliances, and Direct Vent conversion kits for fireplaces. The Flexmaster sub-brand supplies HVAC ducting products including Triple Lock aluminum and stainless steel flexible duct, Fabriflex fabric ducting, Platinum Flow gasketed LEED-oriented duct systems, PVS underground duct, and Fume Vent laboratory exhaust systems built in 304L/316L stainless steel.

The technology foundation rests on proprietary mechanical engineering rather than software. The patented Triple Lock seam technology produces leak-proof connections without adhesives across flexible ducts, chimney liners, and vent connectors. Differentiated product features include the Z-Rigid smooth wall liner with cULus listing to 2100°F creosote burnout test and fusion welded seams, the Double Fail Safe self-sealing EPDM gasket system in Z-Vent Double Wall, and the Aerocowl aerodynamic flue stabilizer that mitigates down-draft. The company's products carry UL and cULus certifications (UL file #MH60654) and UL-181/ULC S110 Class 1 listings for HVAC duct categories that are prerequisite for code-compliant installations. Z-Flex holds a portfolio of registered trademarks spanning Z-Flex, Z-Vent, Z-DENS, Triple Lock, Platinum Flow, Insul-Vent, Z-MAX, Flexmaster, Fabriflex, and Aerocowl.

Z-Flex employs a hybrid distribution model combining an authorized dealer network across North America, direct e-commerce through its catalog website, and a customer-service supported quoting channel (the Z-Quote system design tool backed by an 800 sales line) for commercial projects. Revenue is generated almost entirely through hardware sales of venting and ducting products, including custom appliance adapters that connect Z-Vent to specific OEM boiler brands such as Weil-McLain, Lochinvar, Viessmann, Bosch, Noritz, Triangle Tube, and Modine. Pricing is quote-based and not publicly disclosed. The company is privately held, headquartered in Bedford, New Hampshire, with 11–50 employees, and is part of the larger North American Novaflex Group operating structure.

Name

Z-Flex Realty, Inc.

Legal name

Z-Flex (US) Inc

Website

https://z-flex.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

11–50 employees

Short description

Z-Flex Realty, Inc. manufactures venting systems, chimney liners, gas vents, and HVAC ducting products under brands including Z-Flex, Z-Vent, Z-DENS, and Flexmaster. Operating as the US division of the Novaflex Group, it sells through a North American dealer network and direct e-commerce to residential, commercial, and industrial customers.

Ownership category

akta.pro rank

Product category

Venting Systems and HVAC Ducting Products

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Steam & Air-Conditioning Supply (4961), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430)

akta.pro primary industry

Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG)

akta.pro secondary industries

Louvers, Vents & Architectural Grilles (IMADAIAM), Water Heater/Boiler Flue, Venting & Chimney Liner Service (HSAOACAF)

Keywords

• Chimney liner systems
• HVAC ducting products
• Gas vent systems
• Polypropylene venting
• Flexible vent connectors

Headquarters

HQ city

Bedford

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D

Revenue model

1. Venting Product Sales: Sale of venting products including chimney liners, gas vent systems, flexible connectors, and accessories. Products sold through dealer network and direct catalog.
2. HVAC Ducting Products: Sale of HVAC ducting products under Flexmaster brand including flexible ducting, spiral duct, and fittings for commercial and industrial applications.
3. Custom/Vented Appliance Adapters: Specialized adapter products for specific appliance manufacturers including Weil-McLain, Lochinvar, Viessman, Bosch, and other boiler/water heater brands.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Z-Flex Realty, Inc., operating as Z-Flex (US) Inc, manufactures and distributes venting systems, chimney liners, gas vent systems, and HVAC ducting products. The company sells stainless steel and aluminum chimney liner kits for wood, gas, oil, and pellet appliances; Z-Vent single and double wall gas vent systems; Z-DENS polypropylene venting for condensing appliances; and Flexmaster branded HVAC flexible duct products, all distributed primarily through an authorized dealer network across North America.

Product overview

Z-Flex Realty, Inc. (part of the Novaflex Group) is a manufacturer of venting systems and HVAC products. The product portfolio centers on Z-Flex branded chimney liner systems (including stainless steel and aluminum kits for all fuel types), Z-Vent gas vent systems (single and double wall), Z-DENS polypropylene venting for condensing appliances, and Z-Flex Direct Vent kits for gas fireplace conversions. The company also offers Flexmaster branded HVAC products including Triple Lock aluminum and stainless steel flexible ducting, Fabriflex fabric ducting, Platinum Flow gasketed duct systems, PVS underground duct systems, and Fume Vent laboratory exhaust systems. The products serve residential, commercial, and institutional construction with a focus on professional installation for heating appliances, boilers, furnaces, and HVAC systems.

Differentiator

Problem solved

Functional benefit

Brands

• Z-Vent: Gas vent systems including single wall and double wall products for heating equipment
• Z-DENS
• Z-Max
• Insul-Vent
• Flexmaster
• Platinum Flow
• Fabriflex
• Aerocowl

Products and services

• Z-Flex Chimney Liner Kits and Accessories - All Fuels

Quantifiable outcome

• Self-sealing joints reduce installation time and labor up to 25% compared to field sealed systems
• +3 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Novaflex GroupcoreOthersZ-Flex is a subsidiary of the Novaflex Group. Novaflex Group is a global manufacturer of flexible ducting and venting solutions. Z-Flex operates as the US venting products division under the corporate umbrella.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• DuraVent (M&G Group): DuraVent is the leading North American manufacturer of chimney, venting, and air distribution products under brands like DuraVent, DuraChimne, and PelletVent. Direct competitor across Z-Flex's chimney liner, gas vent, and HVAC ducting lines; recently expanded via acquisition (SpeediVent) and backed by Vanderbilt Partners.
• Selkirk Corporation: Selkirk (part of Selkirk Group) is one of the largest U.S. manufacturers of chimney and venting systems for residential and light commercial applications, including all-fuel chimney liners and gas vents. Directly competes with Z-Flex's chimney liner and Z-Vent product families through a similar dealer-distribution model.
• Centrotherm Eco Systems: Centrotherm specializes in polypropylene (PP) flue gas venting systems for high-efficiency condensing boilers and water heaters — directly competing with Z-Flex's Z-DENS product line. Both target the same condensing appliance retrofit/new-build niche with UL/cUL-listed PP systems.
• Heat-Fab Inc. Heat-Fab is a U.S. manufacturer of all-fuel stainless steel chimney liners, stove pipe, and specialty venting products serving residential and commercial heating markets. Direct competitor to Z-Flex's all-fuel stainless and oval liner product lines.
• Metal-Fab Inc. Metal-Fab manufactures venting systems for gas, oil, wood, and pellet appliances including chimney liners, gas vents, and specialty adapters. Directly competes with Z-Flex across residential and light-commercial venting categories, serving a similar contractor/dealer channel.
• AmeriVent (Hart & Cooley): AmeriVent, a brand of Hart & Cooley (part of the M&G Group portfolio alongside DuraVent), is a major manufacturer of gas vent systems for Category I, II, III, and IV appliances. Directly competes with Z-Flex's Z-Vent single and double wall gas vent product lines.
• Field Controls: Field Controls manufactures combustion venting, draft controls, and air-handling products including the TRIO flue gas management system and AeroCowl-style flue stabilizers. Direct competitor to Z-Flex's Aerocowl and adjacent drafting/combustion product categories.
• ICC Chimney (Industrial Chimney Company): ICC is a Canadian manufacturer of stainless steel chimney liners and venting systems serving residential and commercial markets across North America. Directly comparable to Z-Flex's stainless steel chimney liner business and competitor in Canadian/North American dealer channels.
• Thermaflex: Thermaflex is a global manufacturer of flexible ducts, insulation, and air distribution products for HVAC applications, including non-combustible and fabric ducting systems. Comparable to Z-Flex's Flexmaster aluminum/stainless flexible duct and Fabriflex fabric ducting product families.

Regional players

• Imperial Manufacturing Group: Imperial Manufacturing is a Canadian-based manufacturer of HVAC products including flexible duct, venting components, and fittings, with a strong North American distribution footprint. Comparable to Flexmaster-branded HVAC ducting line within the Z-Flex portfolio, with overlap in product categories though primary geographic strength is Canadian.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Z-Flex Realty, Inc.