Reznor

What Reznor does

Reznor LLC is a U.S.-based commercial and industrial HVAC manufacturer founded in 1891 and headquartered in Saint Charles (corporate) / O'Fallon (operational), Missouri, with manufacturing in Mercer, Pennsylvania. The company designs and produces gas-fired and electric unit heaters, infrared radiant tube and high-intensity heaters, air handlers, duct furnaces, destratification fans, and air curtains, supported by proprietary heat-exchanger technologies including the TCORE2 titanium-stabilized aluminized steel design (UDXC, LDAP), the TCORE3 409 stainless steel design (UEZ condensing units), and MacroChannel secondary heat-exchanger geometry. Separated combustion technology is used across product lines to draw combustion air from outside the heated space, reducing contamination risk in dirty or negative-pressure environments.

Reznor's product portfolio spans more than 30 SKUs organized around unit heaters (UDXC, UBXC, UEZ, LDAP, EUH, EUHC, EPH, UWS, EWHB, EXUB, EGW), infrared heaters (RIEH, RIHL/RIHN, RIHVL/RIHVN, RIHP, VZT, VZH, VZ), air handlers (CAUA, RPB, RPBL, SSCBL, SCE), duct furnaces (EEDU, HRPD, RP, SC, X), and electric heat products (EHL, EHC, EHA, EMC, EBHB, ECR, ECS). Target applications include warehouses, auto body shops, restaurants, hospitality venues, loading docks, car washes, parking garages, and hazardous locations, with products marketed to specifiers, contractors, and distributors serving commercial, industrial, and selected residential applications.

Reznor sells exclusively through an indirect distribution model across North America, leveraging a network of HVAC distributors, manufacturer representatives, and contractor referrals, supported by a distributor portal (ACE) and participation in industry events such as AHR Expo. Revenue is generated via hardware sales with quote-based pricing through channel partners. The company operates as a portfolio company of Madison Air, which began acquiring Reznor in 2017 alongside sister brands Roberts-Gordon (infrared) and Big Ass Fans (air movement), under a decentralized parent operating model. Reznor is privately held with no disclosed funding rounds, no public listing, and no venture capital or private equity backing indicated in available sources.

Name

Reznor

Legal name

Reznor LLC

Website

https://reznorhvac.com

Company type

Private

Founded year

1891

Operating status

Operating

Headcount range

251–500 employees

Short description

Reznor is a US-based commercial and industrial HVAC manufacturer producing unit heaters, infrared radiant heaters, air handlers, duct furnaces, air curtains, and destratification fans. Operating since 1891 as a Madison Air subsidiary, it serves North American distributors, contractors, and end-users across industrial, automotive, hospitality, restaurant, and warehouse verticals via an indirect channel-partner GTM model.

Ownership category

akta.pro rank

Product category

Commercial and Industrial HVAC Heating Equipment

NAICS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Heating Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

HVAC Equipment (Heating, Cooling & Air Handling) (IMAHAKAB)

akta.pro secondary industry

Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF)

Keywords

• Commercial HVAC equipment
• Industrial unit heaters
• Gas-fired infrared heaters
• Destratification fans
• Ducted air handlers

Headquarters

HQ city

O'fallon

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. HVAC Equipment Sales: Reznor generates revenue through the sale of HVAC heating equipment including unit heaters, electric heaters, gas radiant heaters, air handlers, duct furnaces, air curtains, and destratification fans. Products are sold through a network of distributors and manufacturer representatives across North America.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Reznor manufactures and sells commercial and industrial HVAC heating equipment, including gas-fired and electric unit heaters, low- and high-intensity infrared radiant heaters, indoor and outdoor air handlers, duct furnaces, destratification fans, and air curtains. Products are designed for warehouses, factories, auto shops, restaurants, hospitality venues, and select residential applications, and are sold through distributors and manufacturer representatives across North America.

Product overview

Reznor is a commercial and industrial HVAC manufacturer with over 135 years of history, producing a broad portfolio of heating, ventilation, and air management solutions. The product lineup centers on unit heaters (gas-fired and electric models including UDXC, UBXC, UEZ, LDAP, EUH, EUHC, EPH, UWS, EWHB, EXUB, and EGW), which represent the core product line, complemented by gas radiant infrared heaters (RIEH, RIHL/RIHN, RIHVL/RIHVN, RIHP, VZT, VZH, VZ), air curtains (Huracan HAC/HACE), destratification fans (Model H), air handlers (CAUA, RPB, RPBL, SSCBL, SCE), and duct furnaces (EEDU, HRPD, RP, SC, X, EEDU). Electric heat products include wall heaters (EHL, EHC, EHA), cabinet heaters (EMC), baseboard heaters (EBHB), and ceiling heaters (ECR, ECS). The newest additions include the DTH Docked Trailer Heater and EUHC Compact Electric Unit Heater. Products are designed for commercial, industrial, and residential applications including warehouses, auto shops, restaurants, and hospitality venues.

Differentiator

Problem solved

Functional benefit

Products and services

• UDXC Fan Model Unit Heater Universal gas-fired unit heater providing safety, comfort, and efficiency to industrial, commercial, and residential buildings with a range of heating capacities (30–400 MBUH), featuring the TCORE2 titanium-stabilized aluminized steel heat exchanger.
• UBXC Blower Model Unit Heater Gas-fired blower model unit heater designed for buildings with high CFM or pressure requirements, providing safety, comfort, and efficiency for industrial, commercial, and residential use.
• UEZ Condensing Unit Heater High-efficiency condensing unit heater delivering up to 93% efficiency with separated combustion design, using outside air for combustion to prevent indoor air contamination, featuring the TCORE3 409 stainless steel primary heat exchanger.
• LDAP Downflow Heater High-capacity indirect-fired downflow packaged heater ideal for large high-bay warehouses and factories, with destratification mode to push hot air from roof to floor; up to 1,200,000 BTUH with 83% thermal efficiency.
• EUH Electric Unit Heater 100% efficient electric unit heater supporting sustainability and greenhouse gas reduction when paired with zero-emission electricity; eight models covering 3–30 kW with multi-voltage capability, designed for decarbonization applications.
• EUHC Compact Electric Unit Heater Compact electric unit heater engineered for maximum flexibility, efficiency, and year-round comfort; eight sizes from 2 kW to 20 kW with multi-position hanger for vertical, horizontal, or angled discharge, fan-only mode for summer air circulation, and BACnet-capable thermostats available.
• EPH Electric Plenum-Rated Unit Heater Electric plenum-rated unit heater engineered for maximum flexibility, efficiency, and safety in suspended and concealed ceiling spaces; features zero-clearance installation, built-in multi-voltage controls, and 208–600V options.
• UWS Hydronic Unit Heater Hot water suspended unit heater engineered for commercial and industrial efficiency, designed to pair with high-efficiency boilers or hot water heat pump systems; nine unit sizes from 10,000–191,000 BTUh input with unique back-connection design for clean front aesthetic.
• EWHB Wash Down Unit Heater Electric washable unit heater designed for wet environments and high-humidity areas with non-metallic electrical casing and stainless steel housing resistant to moisture and corrosion; available in 208V, 240V, 480V, 600V with NEMA 4X enclosure.
• EXUB Explosion-Proof Heater Explosion-proof electric air heater designed for hazardous locations in heavy industry, featuring liquid-to-air heat-exchanger cores with carbon-steel tubes and aluminum fins and providing the highest air temperature rise in the industry.
• EGW Economical Unit Heater Axial fan electric unit heater for ceiling or wall mounting, designed for workshops, garages, and smaller areas needing heat for comfort or freeze protection; 240/208V single-phase operation with adjustable louvers.
• RIEH Electric Infrared Heater Electric infrared heater using carbon-fiber infrared technology for instant, efficient, and targeted radiant warmth; available in Glass-Front and Standard Open-Grille models with IP65 weather-resistant rating and wattage options from 1500W to 6000W.
• RIHL / RIHN High-Intensity Infrared Heater Small high-intensity infrared heaters using a high surface temperature system for intense radiant heat; RIHL for propane (50,000–120,000 BTUH) and RIHN for natural gas (30,000–60,000 BTUH), with ceramic combustion surface up to 1850°F reaching full intensity in under 30 seconds.
• RIHVL / RIHVN High-Intensity Infrared Heater Large high-intensity infrared heaters for higher capacity requirements; RIHVL for propane (50,000–120,000 BTUH) and RIHVN for natural gas (100,000–200,000 BTUH).
• RIHP Outdoor Patio Heater Weather-resistant gas-fired infrared patio heater designed for commercial outdoor spaces; withstands rain, snow, and winds up to 40 mph, with single or two-stage operation and multiple mounting options.
• VZT Two-Stage Infrared Heater Low-intensity radiant tube heater with two-stage burner technology that automatically adjusts to high or low fire; six sizes from 80,000 (low 55,000) to 200,000 (low 130,000) BTUh, with claimed 45% more efficiency than competing brands.
• VZH Harsh Environment Infrared Heater Low-intensity radiant tube heater designed for harsh environments including car washes, garage bays, parking ramps, and outdoor areas; withstands winds up to 40 mph, approved for indoor and outdoor use, with stainless steel burner and enclosed burner box, burner sizes 40,000 to 175,000 BTUh, tube lengths 10 to 60 feet, 5-year warranty.
• VZ Low-Intensity Infrared Heater Economical low-intensity radiant tube heater for indoor industrial and commercial spaces; burner sizes 40,000 to 200,000 BTUh with tube lengths 10 to 60 feet, available in straight, U-tube, and L-tube configurations.
• DTH Docked Trailer Heater Electric docked trailer heating solution for loading docks that warms docked trailers in approximately 7 minutes; six models with capacities of 13kW, 18kW, or 30kW, with wall-mounted push-button control, impact-resistant flexible chute, and fan-only mode for warmer months.
• Huracan Air Curtain (HAC/HACE) Air curtains enhancing air quality, safety, health, and comfort in commercial and industrial buildings; Model HAC (unheated) and HACE (electric heated) feature industry-leading plenum design, heavy-duty 3/4 HP motors, and ROI of less than two years with energy savings exceeding $4,000.
• Reznor Destratification Fans (Model H) Destratification fans that recirculate warm air trapped at ceiling back to the floor using minimal energy, reducing heating costs and improving occupant comfort; four sizes for mounting heights from 25 to 60 feet, with BACnet-linkable thermostat available for BMS integration.
• CAUA Indoor Air Handler Indoor gas-fired upflow split system air handler providing efficient heating, cooling, and/or makeup air; six sizes from 150,000 to 400,000 BTUH gas input, with separated combustion design and centrifugal blower.
• RPB Outdoor Air Handler Outdoor packaged gas-fired forced air furnace for installation outdoors with recirculating and/or makeup air duct systems; 80% thermal efficiency with sizes from 125,000 to 400,000 BTUH gas input, with optional evaporative cooling.
• RPBL Outdoor Air Handler with High-Capacity Blower Extended capacity outdoor air handler combining one, two, or three duct furnaces with a large-capacity blower cabinet; heating capacities from 400,000 to 1,200,000 BTUH gas input, delivering up to 100% outside air for makeup air applications.
• SSCBL Indoor Air Handler with High-Capacity Blower Indoor air handler combining separated-combustion duct furnaces with a large-capacity blower cabinet for areas with negative pressure and/or dirty or mildly corrosive atmospheres; heating capacities from 400,000 to 1,200,000 BTUH.
• SCE Indoor Separated-Combustion Air Handler Indoor separated-combustion gas-fired air handler designed to separate combustion air from the heated space, suitable for harsh and corrosive environments; nine sizes from 125,000 to 400,000 BTUh input.
• HRPD Outdoor Dual Duct Furnace Outdoor rooftop dual duct furnaces for use in heating, heating/cooling, or makeup air systems; 80% thermal efficiency with integral power vent system, eight sizes from 250,000 to 800,000 BTUH input per furnace.
• RP Outdoor Duct Furnace Outdoor weatherized duct furnace with pre-packaged, factory-wired, and fire-tested design; 4:1 or 2:1 turndown with up to 90°F temperature rise, natural gas or propane fuel options.
• SC Indoor Separated-Combustion Duct Furnace Indoor separated-combustion duct furnace using outside air for combustion to prevent contaminants from entering the combustion zone; 80% thermal efficiency, designed for buildings with negative pressure or dirty atmospheres.
• X Indoor Gravity-Vented Duct Furnace Indoor gravity-vented duct furnace with 80% thermal efficiency for natural or propane gas; sizes from 75,000 to 400,000 BTUH input, using Thermocore aluminized steel heat exchanger with venturi-design tubes.
• EHL Residential Wall Heater Compact multi-purpose residential electric wall heater with silent axial fan and tubular heating element with fins; available in multiple colors, 120V, 208V, 240/208V single-phase operation.
• EHC Commercial Wall Heater Commercial wall heater providing a burst of heat in areas affected by cold drafts; can be installed recessed or surface-mounted with a closed factory-lubricated motor, with multiple voltage options including 120V through 600V.
• EHA Architectural Wall Heater Forced-air architectural wall heater with extruded aluminum front grille and enclosed factory-lubricated motor; provides quick heat in areas affected by cold drafts with hidden controls to prevent tampering.
• EMC Cabinet Unit Heater Forced-air cabinet unit heater with a wide range of power ratings, voltage, and control options; can be recessed, floor-mounted, wall-mounted, or ceiling-mounted, available in four sizes.
• EBHB Baseboard Heater Compact electric baseboard heater with high performance and strength; features reduced height eliminating the need for a furring strip during installation, with multiple voltage options from 120V to 600V.
• ECR Ceiling Recessed Mounted Heater Recessed ceiling mounted forced-air heater providing comfort without being obtrusive; flat ribbon wire outlet grille driven by a powerful motor for circulation of warm air near ceilings.
• ECS Ceiling Surface-Mounted Heater Ceiling surface-mounted forced-air heater for versatile installation across various ceiling constructions; powerful motor drives warm air downward while supplying supplemental heat.

Quantifiable outcome

• Reznor air curtains have a return on investment of less than two years and energy savings can exceed $4,000 when properly installed and operated.
• +6 more outcomes

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature8 records

Partnerships

Six partnerships are on record, tiered minor and core.

• ASHRAEminorStrategic or Co-development PartnerIndustry partnership with ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers). Reznor is proudly aligned with ASHRAE as part of their strong industry partnerships.
• AHRIminorStrategic or Co-development PartnerIndustry partnership with AHRI (Air-Conditioning, Heating, and Refrigeration Institute). Reznor is proudly aligned with AHRI as part of their strong industry partnerships.
• HRAIminorStrategic or Co-development PartnerIndustry partnership with HRAI (Heating, Refrigeration and Air Conditioning Institute of Canada). Reznor is proudly aligned with HRAI as part of their strong industry partnerships.
• Madison AircoreStrategic or Co-development PartnerMadison Air is the parent company of Reznor, operating a decentralized business model formed through transformative acquisitions beginning in 2017. Madison Air is committed to enhancing the comfort and well-being in buildings and homes with innovative heating solutions.
• Roberts-GordonminorStrategic or Co-development PartnerPart of the Madison Air portfolio of world class brands. Roberts-Gordon specializes in infrared heaters for industrial and commercial applications, bringing warmth of the sun indoors.
• Big Ass FansminorStrategic or Co-development PartnerPart of the Madison Air portfolio of world class brands. Big Ass Fans delivers comfort solutions for spaces where comfort seems impossible, succeeding where all others fall short.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Greenheck Group: Greenheck is a direct peer in commercial/industrial air movement and HVAC equipment — including fans, air curtains, unit heaters, and ventilation products serving the same contractor/specifier channel.
• TPI Corporation: TPI is a direct peer producing electric unit heaters, infrared heaters, and forced-air heaters for commercial and industrial spaces — directly overlapping Reznor's electric heat and infrared product lines.
• Chromalox: Chromalox is a direct peer in commercial and industrial electric heating — manufacturing unit heaters, duct heaters, and process heating equipment for similar industrial/commercial end markets.
• Marley Engineered Products: Marley MEP is a direct peer producing electric unit heaters, wall heaters, baseboard heaters, and infrared heaters for commercial and industrial markets — closely comparable product mix and channel.
• Systemair: Systemair is a direct peer producing commercial/industrial fans, air handling units, and HVAC products — comparable in destratification fans, air curtains, and ventilation product categories.
• Modine Manufacturing: Modine is a direct peer — it manufactures commercial and industrial HVAC heating and cooling equipment, unit heaters, and infrared/radiant heaters serving overlapping industrial and commercial customers with a similar product mix.
• INDEECO: INDEECO is a direct peer manufacturing electric unit heaters, cabinet heaters, baseboard heaters, and wall heaters for commercial and industrial applications — a closely comparable electric-heat product portfolio.
• Roberts-Gordon: Roberts-Gordon is a sister Madison Air brand that directly competes in infrared/radiant heating for commercial and industrial applications — overlapping product category, customer base, and distribution channel.

Broad incumbents

• Lennox International: Lennox is a broad incumbent in heating, ventilation, air conditioning, and refrigeration serving commercial and residential markets — overlaps with Reznor's commercial heating portfolio but at significantly larger scale and broader scope.
• Trane Technologies: Trane Technologies is a broad incumbent in commercial HVAC, heating, and air management systems — overlapping Reznor's industrial/commercial heating focus as part of a much broader global portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/ReznorHVAC

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 Reznor