International Environmental Corporation

What International Environmental Corporation does

International Environmental Corporation (IEC) is a US-based manufacturer of commercial hydronic fan coil and blower coil HVAC systems, founded in 1948 and headquartered at a state-of-the-art manufacturing facility in Oklahoma City, Oklahoma. The company operates as a subsidiary of Climate Control Group, which is itself a subsidiary of NIBE — a Swedish publicly traded conglomerate specializing in sustainable climate solutions. IEC's product portfolio spans multiple product lines including the Vertical Stack Series (for high-rise applications, including the modular ReStoraMOD retrofit line), Vertical Floor Series, Horizontal Series, Hi-Performance Series, Direct Drive and Belt Drive Blower Coil Series, and Cabinet Heaters. The company serves six primary verticals: hospitality, higher education, K-12 education, multi-family residential, office environments, and healthcare, with named installations at properties such as Hotel Monaco Washington D.C., Kimpton Hotels, Touraine Apartments Philadelphia, Cristalla Tower Seattle, and various educational and healthcare facilities.

The company's technology platform centers on hydronic fan coil engineering with several proprietary innovations: SureFlow (a 2-pipe hydronic system that delivers 4-pipe performance, reducing pipe requirements by up to 40% and offering 17-24% energy cost savings), EnviroKIT (sustainable component replacement kits that extend equipment life), ReStoraMOD (modular restoration units enabling one-day-or-less room downtime for retrofit projects), and a patent-pending Direct Drive Blower Coil featuring EC motor technology. Products are build-to-order with over 30 billion configuration options, manufactured at the Oklahoma City facility, and shipped across North America with international representative coverage. The company holds ISO 9001:2015 and ISO 14001:2015 certifications, plus AHRI performance and UL/cUL/MEA product safety listings.

IEC's business model is hardware sales through an indirect channel. Products are sold exclusively via a global network of independent manufacturer's representatives, with orders processed and configured through the proprietary EnCompass online platform. Revenue streams include one-time unit sales (vertical stack, floor, horizontal, hi-performance, blower coils), aftermarket parts and components (including next-day ship options for critical replacements), and EnviroKIT retrofit solutions. The company does not publish pricing — products are quote-based through sales representatives. Supporting service programs include Quick Ship (offering 1, 5, 10, and 15 business day lead times), Next Day Ship for pre-configured stock units, and an Attic Stock spare parts program. No recurring software or service subscription revenue is evident; the model is fundamentally project-driven commercial HVAC equipment sales.

Name

International Environmental Corporation

Legal name

International Environmental Corporation

Website

https://iec-okc.com

Company type

Private

Founded year

1948

Operating status

Operating

Headcount range

251–500 employees

Short description

International Environmental Corporation manufactures commercial hydronic fan coil and blower coil HVAC systems from its Oklahoma City facility, serving hospitality, education, multi-family residential, healthcare, and office markets across North America via a manufacturer's representative network.

Ownership category

akta.pro rank

Product category

Commercial HVAC Equipment

NAICS

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), Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)

akta.pro primary industry

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

akta.pro secondary industries

Fans, Blowers & Ventilation Units (Supply/Exhaust/Inline) (IMADANAB), Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG), Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF)

Keywords

• Hydronic fan coils
• Blower coils
• Commercial HVAC equipment
• Air handling units
• Hydronic heating cooling

Headquarters

HQ city

Oklahoma City

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Fan Coil Unit Sales: Primary revenue from manufacturing and selling hydronic fan coil units and blower coils. Products include vertical stack, vertical floor, horizontal ceiling, hi-performance series, direct drive, and modular hi-rise units. Revenue is one-time per unit sale with no recurring component.
2. Aftermarket Parts and Components: Sales of replacement parts, accessories, attic stock orders, and aftermarket components through the Parts Quick Link in EnCompass platform. Includes next-day ship options for critical replacement parts.
3. EnviroKIT Retrofit Solutions: Sustainable component replacement kits sold as alternative to full unit replacement. Four-tier offering aligned with customer budget and requirements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

International Environmental Corporation (IEC) manufactures commercial hydronic fan coil units and blower coils for HVAC applications serving hospitality, healthcare, education, multi-family residential, and office environments. Its portfolio includes vertical stack, vertical floor, horizontal ceiling, hi-performance, direct drive, and belt drive product lines, complemented by proprietary technologies such as SureFlow (2-pipe hydronic system), EnviroKIT (sustainable component retrofit), and ReStoraMOD (modular restoration fan coils), plus the EnCompass online ordering platform and Quick Ship/Next Day Ship fulfillment programs.

Product overview

International Environmental Corporation (IEC) is a manufacturer of commercial hydronic HVAC equipment headquartered in Oklahoma City, Oklahoma. The company operates as a subsidiary of Climate Control Group (a NIBE company) and has been in business since 1948. IEC's product portfolio centers on hydronic fan coil units and blower coils designed for commercial applications across hospitality, healthcare, education, multi-family housing, and office environments. The core offering includes multiple product lines: Vertical Stack Series (MPY, MXY, MUY, MGY, MAY/MBY, MMY/MSY, MRY ReStoraMOD®) for high-rise applications; Vertical Floor Series (FXA, FSA, FHA, LHA/LHW, LXA/LXW, STY/STW) for perimeter heating/cooling; Horizontal Series (CPY, CHY, CXB, CBY) for ceiling installations; Hi-Performance Series (VEY, HPY, HXY, HHY, HLY) for high-static applications; Direct Drive Blower Coils (HDY, VDY) and Belt Drive Blower Coils (HBD, VBA) for large-capacity needs; and Cabinet Heaters (v-Heat series). IEC also offers proprietary technologies including SureFlow® (a 2-pipe system delivering 4-pipe performance), EnviroKIT® (sustainable component replacement kits), and ReStoraMOD® (fast-installation modular replacement units). Supporting services include the EnCompass ordering platform, Quick Ship and Next Day Ship programs, Attic Stock spare parts programs, and integrated ERV systems. The company holds ISO 9001:2015 and ISO 14001:2015 certifications.

Differentiator

Problem solved

Functional benefit

Brands

• EnviroKIT: Sustainable alternative fan coil unit replacement solution that extends the life of existing fan coil units by replacing aging components.
• SureFlow
• ReStoraMOD

Products and services

• AHY Air Handling Unit New air handling unit product line offering cost-effective solutions with unmatched flexibility for a wide range of commercial HVAC applications.
• EnviroKIT Sustainable kitted solution engineered to replace aging and failing fan coil components as a cost-effective alternative to full unit replacement, extending equipment life and repurposing existing cabinets.
• ReStoraMOD Vertical Stack (MRY) Modular restoration fan coil unit designed for fast, minimally invasive replacement of aging vertical stack fan coils without affecting neighboring units, limiting room downtime to one day or less.
• SureFlow 2-Pipe Hydronic System Innovative 2-pipe hydronic system delivering 4-pipe performance by using integrated low-watt circulators to hydraulically isolate fan coils from the primary distribution loop, reducing pipe requirements by nearly half and providing year-round heating and cooling.
• Hydronic Fan Coil Units (Vertical Stack, Vertical Floor, Horizontal, Hi-Performance) High-performance hydronic fan coil units for hospitality, multi-family, and commercial environments spanning vertical stack, vertical floor, horizontal ceiling, and hi-performance configurations, providing energy efficiency, quiet operation, and occupant comfort.
• Blower Coil Units (Direct Drive and Belt Drive) Hydronic blower coil solutions in both direct drive (EC motor, energy-efficient) and belt drive variants, in horizontal and vertical configurations, for commercial applications requiring higher CFM ranges or high-static pressure.
• Quick Ship Program Expedited shipping service offering 1, 5, 10, and 15 business day lead times on select preconfigured fan coil units for urgent project requirements.
• Next Day Ship Program Stock preconfigured units and aftermarket parts available for next-business-day shipment when ordered by 1:30 pm CST.
• Attic Stock & Spare Parts Program Pre-ordered spare parts and replacement components stored on-site for maintenance needs during installation and warranty periods, reducing downtime and emergency shipping costs.

Quantifiable outcome

• SureFlow reduces construction costs up to 40% by cutting pipe requirements nearly in half
• +5 more outcomes

Named customers13 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Climate Control Group (CCG)coreOthersIEC is a subsidiary of Climate Control Group, a NIBE company. CCG encompasses multiple HVAC brands including ClimateCraft, ClimateMaster, ClimaCool, TTI, and KOAX. CEO Kevin McNamara leads the group which celebrated 75 years of excellence in 2023.
• NIBEcoreOthersIEC is part of Climate Control Group, a NIBE company. NIBE is a Swedish industrial company specializing in sustainable climate solutions. This parent-subsidiary relationship provides IEC with global backing and resources.
• Hines (Hines Kearns Office Renovation)minorStrategic or Co-development PartnerCase study customer for Direct Drive Blower Coil Series installation in Hines Kearns Office Renovation project in Salt Lake City, UT.
• Greater Oklahoma City ChamberminorOthersJeff Seymore, Executive Vice President of Greater Oklahoma City Chamber, attended IEC's 75th Anniversary celebration, reflecting IEC's positive influence on the local economy and business community.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• ClimateMaster: Sister brand under Climate Control Group (NIBE) that manufactures geothermal/water-source heat pumps and hydronic HVAC equipment. Highly comparable as a NIBE-owned commercial hydronic HVAC manufacturer targeting similar institutional and commercial customers.
• ClimateCraft: Sister brand under CCG/NIBE specializing in custom air-handling units and modular HVAC systems. Closely comparable as another Oklahoma City-based, NIBE-owned commercial HVAC manufacturer serving overlapping institutional and commercial customers.
• Jaga Climate Systems: Belgian manufacturer of hydronic fan coils, climate radiators, and low-temperature HVAC solutions. Directly competes with IEC in commercial hydronic fan coil applications, particularly in energy-efficient and design-oriented European-style installations.
• Enviro-Tec (a division of Z-Tech): US manufacturer of fan coil units, blower coils, and terminal units for commercial HVAC. Closely comparable product portfolio targeting hospitality, healthcare, and multi-family residential markets with similar customization and quick-ship programs.
• Rittling (a brand of Kampmann): European manufacturer of fan coils and chilled beams for commercial buildings. Directly comparable in hydronic terminal equipment serving hospitality, office, and institutional projects with similar architectural integration priorities.

Broad incumbents

• Daikin Applied: US arm of Daikin Industries, offering chillers, air handlers, fan coils, and broader commercial HVAC systems. Broad incumbent with overlapping fan-coil and air-handling products but with a much wider portfolio spanning refrigeration and applied systems.
• Trane Technologies: Global HVAC incumbent offering unitary, air-side, and applied HVAC including fan coils and blower coils for commercial buildings. Competes with IEC in hospitality, education, and office segments while also offering broader controls and service capabilities.
• Carrier Global: Major HVAC manufacturer with commercial fan coil, air-handling, and chiller offerings competing directly with IEC in hospitality, healthcare, and education segments. Broad incumbent with global service footprint and integrated controls.
• Titus (a brand of Johnson Controls): Manufacturer of air distribution products including fan-powered terminal units, diffusers, and chilled beams. Adjacent competitor in air-side commercial HVAC, with overlapping terminal-equipment offerings and similar institutional customer base.

Emerging players

• Bard Manufacturing Company: US manufacturer of wall-mount, packaged, and commercial HVAC products including hydronic and blower-coil-adjacent equipment. Comparable as a US-based commercial HVAC specialist, though narrower in vertical-stack and renovation-product focus than IEC.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/iechvac
• Facebookfacebook.com/iec-hvac-500291710053120
• LinkedInlinkedin.com/company/144185

Compliance2 records

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 International Environmental Corporation