Heat Fab

What Heat Fab does

HeatFab, founded in 1978 and headquartered in Turners Falls, Massachusetts, is a specialty manufacturer of residential and commercial venting systems for gas-fired heating appliances. The company's Saf-T Vent product family comprises four core platforms: the double-wall Model CI Plus/CI 316 (4"-32" ID) for condensing appliances, the concentric direct-vent Model SC Plus/SC 316 (3"/5" and 4"/7" ID/OD) for zero-clearance applications, the single-wall Model GC Plus/GC 316 (18"-32") for Category I-IV gas appliances, and the single-wall Model EZ Seal Plus/EZ 316 (3"-16") featuring factory-installed integral seals. All products are constructed from super ferritic stainless steel (UNS S44735, designated 29-4C) with grade 316L available as an alternative, engineered with overlapping joint designs to keep acidic condensate away from seals and patented Ring-and-Tab or Sure Seal locking systems that allow tool-free installation. Maximum temperature ratings reach 550°F with zero clearance to combustibles in some applications.

The business operates as a B2B, sales-led manufacturer specified by OEMs for more than 20 years, serving heating-equipment manufacturers, HVAC contractors, and distributors. Pricing is quote-based, configured by diameter, material, and quantity, and distributed through direct sales, sales representatives, a myDVG portal, and a Duravent Group-integrated brand store. HeatFab is a brand within Duravent Group, a diversified climate-technology platform unifying 14 venting and air-control brands including Selkirk, Hart & Cooley, and Security Chimneys, with which HeatFab shares sales contacts, marketing infrastructure, and distribution. Certifications (UL 1738, ULC-S636, UL 641, ULC-S609, ULC-ORD-441) and proprietary patents form the regulatory and intangible-asset backbone of the company's specification-based competitive position across commercial, institutional, and residential end markets including schools, hospitals, hotels, offices, restaurants, and multi-family housing.

Name

Heat Fab

Legal name

Heatfab

Website

https://heatfab.com

Company type

Private

Founded year

1978

Operating status

Operating

Headcount range

1–10 employees

Short description

HeatFab is a specialty manufacturer of stainless-steel special gas vent (SGV) systems for residential and commercial HVAC, serving OEMs, contractors, and distributors across North America under the Duravent Group portfolio via its Saf-T Vent product family.

Ownership category

akta.pro rank

Product category

HVAC Venting Systems

NAICS

Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)

SIC

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

akta.pro primary industry

Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF)

akta.pro secondary industry

Water Heater/Boiler Flue, Venting & Chimney Liner Service (HSAOACAF)

Keywords

• Special gas venting
• Stainless steel flue systems
• HVAC vent components
• Condensing appliance venting
• Double wall vent pipes

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Venting System Sales: HeatFab generates revenue through the sale of residential and commercial venting systems, including double-wall and single-wall special gas vent products, components, and accessories. Products are sold to OEMs, contractors, and through distribution channels.
2. Technical Support & Design Services: The company provides technical support, design assistance, and engineering consultation for proper venting system specification and installation, supporting product sales.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Heatfab manufactures stainless steel Special Gas Vent systems for Category I, II, III, and IV residential and commercial gas-fired appliances, including boilers, water heaters, unit heaters, and furnaces. Its product lines span single-wall (EZ Seal Plus 3"-16" and GC Plus 18"-32") and double-wall (CI Plus 4"-32" and SC Plus concentric 3"/5" and 4"/7") constructions, built from super ferritic (29-4C) and 316L stainless steel with patented locking systems and listed to UL 1738 and ULC-S636.

Product overview

Heatfab is a manufacturer of high-quality residential and commercial venting systems for Special Gas Vent applications. The product portfolio includes four distinct venting solution lines: Model CI Plus/CI 316 (double-wall system, 4"-32" diameters), Model Saf-T Vent SC Plus/SC 316 (concentric direct vent system, 3"/5" and 4"/7" diameters), Model GC Plus/GC 316 (single-wall system, 18"-32" diameters), and Model EZ Seal Plus/EZ 316 (single-wall system, 3"-16" diameters). All products feature super ferritic stainless steel (29-4C) and/or grade 316L stainless steel construction and are certified for UL 1738 (Special Gas Vent) and ULC-S636 (Type BH Gas Vent).

Differentiator

Problem solved

Functional benefit

Brands

• Saf-T Vent: Product line for special gas vent systems including EZ Seal, CI Plus, GC Plus, and SC Plus models for residential and commercial venting applications.
• Model CI Plus / CI 316
• Model Saf-T Vent SC Plus / SC 316
• Model GC Plus / GC 316
• Model EZ Seal Plus / EZ 316

Quantifiable outcome

• Products specified and trusted by OEMs for over 20 years
• +1 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Duravent GroupcoreStrategic or Co-development PartnerHeatFab is part of the Duravent Group portfolio of brands. Duravent Group is a climate technology leader in the venting and air control industries with over 100 years of expertise, unifying 14 established and respected brands including Duravent, Hart & Cooley, Selkirk, AirMate, and others.
• RUTLANDminorStrategic or Co-development PartnerRecently partnered with RUTLAND as part of the Duravent Group's expanding brand ecosystem and partnership strategy.
• Menzies MetalminorStrategic or Co-development PartnerRecently partnered with Menzies Metal as part of the Duravent Group's expanding brand ecosystem and partnership strategy.
• PrimexVentsminorStrategic or Co-development PartnerRecently partnered with PrimexVents as part of the Duravent Group's expanding brand ecosystem and partnership strategy.
• SelkirkminorChannel Partner/ Reseller/ DistributorSelkirk brand shares sales contact information with HeatFab ([email protected]), suggesting cross-brand coordination within the Duravent Group portfolio.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Others

• RectorSeal: Manufacturer of specialty sealants, firestop systems, and HVAC installation accessories used by the same mechanical contractor audience that installs HeatFab's venting systems. Adjacent rather than directly competitive, but relevant to the broader HVAC venting installation ecosystem.

Direct peers

• ICC Industrial Chimney Company: Manufacturer of factory-built chimneys, vents, and stacks for commercial and industrial heating equipment. Competes with HeatFab's commercial-grade venting offerings in similar end markets and code-driven specification use cases.
• Hart & Cooley: Sister brand under Duravent Group producing registers, grilles, and specialty venting components for the HVAC market. Overlaps with HeatFab in the broader venting/air-control space and shares the same parent sales and distribution infrastructure.
• Security Chimneys: Sister brand within the Duravent Group offering factory-built chimneys and venting for heating appliances. Closely comparable in product category (chimney/venting systems for gas-fired appliances) and end markets (residential and commercial HVAC).
• Schebler Chimney Systems: Manufacturer of engineered chimney and venting systems serving commercial and industrial HVAC applications. Comparable as a niche specialty venting competitor targeting similar OEM and mechanical contractor customers.
• Amerivent: Duravent Group sister brand specializing in gas venting and chimney products for residential and light commercial heating equipment. Directly comparable product portfolio targeting the same HVAC OEM and contractor channels.
• Metal-Fab, Inc. Independent manufacturer of chimney, venting, and special gas vent systems for residential and commercial heating appliances. Directly competes with HeatFab's Saf-T Vent line in OEM specification and contractor distribution for gas-fired appliance venting.
• Selkirk: Sister brand under Duravent Group manufacturing residential and commercial chimney and venting products, including gas vent and specialty venting SKUs that overlap directly with HeatFab's Saf-T Vent line. Comparable in product type, customer base (OEMs and contractors), and regulatory certifications.
• Van-Packer Company: Independent manufacturer of engineered chimney and exhaust venting systems for commercial and industrial applications. Comparable to HeatFab in product category (specialty venting/flue systems) and reliance on engineered specification for safety-critical applications.

Broad incumbents

• Duravent: Flagship brand of the Duravent Group, offering a wider portfolio of HVAC venting, chimney, and air-handling products including the PolyPro polypropylene venting line carried through HeatFab's site. Comparable as a broader umbrella brand spanning HeatFab's category and adjacent HVAC product lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/heat-fab

Compliance5 records

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 Heat Fab