4i4

What 4i4 does

4i4 ApS is a Danish software company founded in 2021 that delivers AI-based SaaS for optimizing HVAC operations in commercial and public buildings. The company's core products, EcoVent and EcoHeat, are software-only layers that integrate directly into a building's existing CTS/BMS infrastructure without requiring new hardware. EcoVent adjusts ventilation in real time based on usage patterns and operational profiles, while EcoHeat uses weather forecasts, solar radiation data, and thermal inertia analysis to predict heating and cooling needs up to six hours ahead. Together, the platform combines energy optimization, continuous condition monitoring, and preventive maintenance in a single dashboard, and is built on digital twin models and machine learning algorithms developed from research at the Technical University of Denmark (DTU).

The company is led by Co-founder & CEO Jonas B. Lund-Jacobsen and Founder & CTO Alireza Kouchaki (Ph.D.), supported by a four-person core team. Named customers include Louisiana Museum of Modern Art, ARKEN Museum for Samtidskunst, Egedal Municipality, and ELIS Danmark, spanning culture, government, and industrial verticals. Distribution is hybrid: direct sales (via website, email, and phone) combined with a channel-partner model through Danish CTS integrators LTECH A/S and Jysk CTS A/S, which handle on-site integration and support.

4i4 monetizes through recurring SaaS subscriptions tied to building count or scope, with pricing not publicly disclosed. Its primary value proposition is reducing energy waste and HVAC operating costs while extending equipment life and supporting compliance with Danish (BR18) and EU (EED, EPBD) building regulations. The company holds GDPR-compliant data processing and has received support from Innovationsfonden (Innovation Fund Denmark). Operations are currently limited to Denmark, with no disclosed funding rounds, revenue figures, or parent company.

Name

4i4

Legal name

4i4 ApS

Website

https://4i4.dk

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

1–10 employees

Short description

4i4 is a Danish AI software company that optimizes HVAC operations in commercial and public buildings via EcoVent and EcoHeat, deployed as a software layer on existing CTS/BMS systems. It serves building owners, municipalities, and cultural institutions in Denmark.

Ownership category

akta.pro rank

Product category

Building Energy Management Software

NAICS

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Auto Controls For Regulating Residential & Comml Environments (3822)

akta.pro industry

PRIMARYBPABAGAB

HVAC Controls & Optimization (Smart Thermostats, VAV, Chillers/Boilers Controls)

Business & Public Services/Facilities Management & Building Services/Building Automation, Energy Management & Smart Building Services

SECONDARYIMAHAKAK

Building Thermal Controls & Building Management Systems (HVAC BMS)

Industrials, Manufacturing & Construction/Industrial Machinery & Heavy Equipment/Refrigeration, HVAC & Thermal Equipment

SECONDARYHSAOANAC

Smart HVAC Monitoring, Diagnostics & Predictive Maintenance

Home & Personal Services/Plumbing, Electrical & HVAC Services/Smart Home Electrical & HVAC Integration Services

SECONDARYIMAIABAD

Building Automation & Controls (BAS/BMS, HVAC Controls)

Industrials, Manufacturing & Construction/Industrial Services & Facility Operations/Building Maintenance & Repair (MEP/HVAC/Plumbing/Electrical)

Keywords

• HVAC optimization software
• Intelligent building control
• Ventilation management software
• Energy optimization platform
• Smart building analytics

Headquarters

HQ city

Copenhagen

HQ country

Denmark

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Software Subscriptions (EcoVent & EcoHeat): SaaS-based revenue model for AI-powered building optimization software. Customers pay for ongoing access to the platform including initial consultation, data collection, analysis, optimization, monitoring, and ongoing support.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

4i4 provides AI-based SaaS that optimizes HVAC operations in commercial and public buildings through two core products — EcoVent (intelligent ventilation optimization) and EcoHeat (predictive heating and cooling control) — deployed as a purely software layer on top of existing CTS/BMS infrastructure. The offering is bundled with condition monitoring, preventive maintenance, and consulting services, sold as a recurring subscription to building owners and operators.

Product overview

4i4 offers a unified software platform combining EcoVent and EcoHeat for intelligent building control. EcoVent optimizes ventilation systems while EcoHeat manages heating and cooling — both products integrate as intelligent software layers directly into existing CTS/BMS infrastructure without requiring hardware replacement. The platform also provides continuous condition monitoring and preventive maintenance capabilities, all accessible through a unified dashboard.

Differentiator

Problem solved

Functional benefit

Brands

• EcoVent: AI-driven software solution for optimizing ventilation systems in larger buildings. Automatically adjusts climate control based on building needs, usage patterns, and operational profile.
• EcoHeat

Products and services

• EcoVent AI-driven SaaS that automatically adjusts ventilation in larger buildings based on actual needs, usage patterns and operational profile. Balances energy consumption against indoor climate and air quality to avoid overventilation, and is sold to commercial and public building owners as a subscription.
• EcoHeat Intelligent heating and cooling control software for commercial buildings. Uses weather forecasts, thermal inertia analysis and sensor data to dynamically adjust temperature setpoints up to six hours ahead, reducing energy waste, improving stability, and extending equipment lifespan.
• 4i4 Intelligent Building Control Platform (Condition Monitoring & Preventive Maintenance) Unified software platform providing 24/7 condition monitoring and data-driven preventive maintenance for building operations, identifying deviations and inefficiencies early and prioritizing maintenance efforts where data shows need. Sold alongside EcoVent and EcoHeat to building owners and operators.
• 4i4 Compliance & Advisory Services (Compliance, Tilstandsrapport, Rådgivning) Consulting, compliance and technical condition-reporting services offered to building owners and operators, supporting compliance with Danish building regulations (BR18) and EU directives (EED, EPBD) and complementing the EcoVent/EcoHeat software subscription.

Quantifiable outcome

• EcoVent dashboard shows annual consumption of 259.2 MWh with savings of 51.84 MWh (20%), CO2 reduction of 8.08 tons annually

Named customers4 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature5 records

Partnerships

Three partnerships are on record, tiered core.

• DTU (Technical University of Denmark)coreStrategic or Co-development Partner · 1 January 2021Research foundation for 4i4. Company was founded in 2021 by experts in system optimization with Ph.D. backgrounds, based on solid research from DTU. The company translates this research into intelligent solutions for optimizing HVAC systems.
• LTECH A/ScoreChannel Partner/ Reseller/ DistributorDanish CTS partner helping customers safely and easily get started with 4i4 solutions. Located at Lyngby, Denmark. Provides integration and implementation services for the EcoVent and EcoHeat systems.
• Jysk CTS A/ScoreChannel Partner/ Reseller/ DistributorDanish CTS partner providing local support and installation services for 4i4 software solutions. Located in Denmark. Helps building owners integrate intelligent optimization into existing CTS systems.

Scale indicators1 record

Recent moves6 records

Expansion highlights5 records

Direct peers

• BuildingIQ: Commercial-building energy optimization platform using predictive analytics for HVAC control, mirroring 4i4's value proposition of AI-driven energy reduction across portfolios of buildings.
• BrainBox AI: Canadian AI startup offering autonomous HVAC and building-energy optimization as a software layer for commercial real estate, closely comparable to 4i4's EcoVent/EcoHeat product approach and target customer profile.
• 75F: US-based provider of AI-driven, cloud-connected HVAC controls and building optimization, directly comparable in deploying intelligent software on top of existing building equipment to cut energy use.
• GridPoint: Smart-building energy-management platform offering HVAC optimization, submetering, and fault detection for multi-site commercial portfolios, closely overlapping with 4i4's optimization and condition-monitoring stack.
• PassiveLogic: Autonomous-building-controls company combining digital twins and AI for real-time HVAC and energy management, an adjacent but more hardware- and new-construction-focused peer of 4i4.

Broad incumbents

• Johnson Controls (OpenBlue): Major BMS/HVAC vendor with OpenBlue digital platform providing AI-driven optimization and condition monitoring for commercial buildings, competing with 4i4 at the portfolio and asset levels.
• Schneider Electric (EcoStruxure): Global energy-management and automation incumbent with EcoStruxure Building Operation, including AI-driven HVAC and energy optimization relevant to 4i4's smart-building software value proposition.
• Siemens (Building X): Building-automation incumbent offering Building X as an AI-enabled digital building platform with HVAC optimization, BMS integration, and analytics across global enterprise real-estate portfolios.
• Honeywell (Honeywell Forge): Global BMS incumbent whose Honeywell Forge platform bundles AI-driven building optimization into a much broader HVAC, security, and building-controls portfolio, representing the most credible scaled competitor to 4i4.

Emerging players

• Enverid: Indoor-air-quality and ventilation-optimization specialist targeting commercial buildings, comparable to 4i4 on ventilation control and air-quality focus but with a more hardware-centric delivery model.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/43276247

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 4i4