The ETU Planner Basic is the compact all-in-one solution for the energy assessment and modernization of heating systems. The program combines building documentation, heat load calculation, U-value analysis, and heat pump design in a seamless system and delivers precise results for reliable planning.
With the integrated HottCAD, users can quickly capture buildings, model components and rooms in detail, and check inputs directly in the 3D model. Additional features such as heat load according to DIN/TS 12831-1:2020-04, hydraulic balancing, a renovation assistant, and heat pump design according to VDI 4645 support the assessment of existing systems and the development of cost-effective modernization concepts.
The seamless connection to other Hottgenroth programs creates an efficient tool for energy consultants, HVAC planners, and specialist companies who want to handle heating projects in compliance with standards, transparently, and in a practical manner.
The Lüftungskonzept Wohnen & Gewerbe offers a comprehensive, standards-compliant solution for the planning and verification of ventilation systems in residential and non-residential buildings. The software calculates air volume flows according to DIN 1946-6, DIN EN 16798-1, and ASR A4.1, taking into account building physics, technical, and hygienic factors.
Whether natural, fan-assisted, or mechanical ventilation, the program assesses the need for ventilation measures, creates detailed concepts, and provides standards-compliant documentation. With the integrated HottCAD, buildings can be comfortably recorded, zoned, and visualized in 3D. Mixed-use buildings with residential and non-residential areas can also be represented.
With intuitive assistants, clear result presentations, and flexible export functions, the module enables efficient, precise, and future-proof ventilation planning for modern MEP and energy projects.
TGA Heizlast Load provides precise and standards-compliant heating load calculations according to DIN/TS 12831-1:2020-04, making it the ideal solution for anyone who wants to reliably assess buildings and prepare TGA planning with a solid foundation. The software calculates heating loads for rooms, residential units, and buildings, uses predefined standard room profiles, and allows individual adjustments of climate data, room parameters, and boundary conditions.
With the integrated HottCAD module, buildings can be quickly captured, modeled in detail, and visualized in 3D – including automatic assignment of U-values, component properties, and room zones. The results can be directly used in follow-up applications such as heating surface design, hydraulic balancing, or the heat pump advisor.
With a clear structure, precise documentation, and practical operation, TGA Heizlast provides a reliable foundation for modern TGA and HVAC planning processes.
Wärmepumpen-Berater is the specialized software for the thorough planning, design, and consultation of modern heat pump systems. It supports energy consultants, planners, and professional companies in designing heat pumps in compliance with VDI 4645 and selecting the appropriate system for each project. The heating load can be adopted according to DIN 12831 or automatically imported from other Hottgenroth modules.
In addition, the program takes into account hot water demand and provides an extensive product catalog of leading manufacturers, from which suitable systems can be selected quickly and conveniently. Furthermore, Heat Pump Advisor provides economic analyses that transparently compare investment and operating costs, creating a solid basis for decision-making.
Whether as a standalone solution or as an add-on for Energieberater, Optimus, or ETU-Planer, the heat pump advisor makes the assessment and design of heat pumps significantly easier, more understandable, and practical.
Optimus 2026 combines all key functions for hydraulic balancing and professional heating optimization in a single software. The program was specifically developed to analyze existing heating systems quickly, reliably, and in accordance with standards. Optimus calculates the hydraulic balance using Method B, automatically determines valve and pump settings, and evaluates heat pumps according to VDI 4650:2024—including transparent documentation for BEG applications.
With the integrated HottCAD module, buildings can be intuitively captured, visualized in 3D, and directly prepared for calculation. Additional features such as room-by-room heating load calculation based on DIN/TS 12831-1:2020-04, spread calculation for heat pumps, and the renovation assistant allow precise comparison of alternatives and practical modernization recommendations.
This makes Optimus a powerful tool that supports technical decisions, reveals efficiency potentials, and significantly simplifies the planning of modern heating systems.
Hottgenroth Software AG stands for digital solutions that noticeably relieve HVAC and electrical professionals in their daily work. The company develops software solutions for energy efficiency, building services, construction, and commercial processes – thereby bringing seamless digitalization to the areas of sanitary, heating, climate, and electrical engineering. With tools such as the ETU Planner, Optimus, TGA Heat Load, and WP Advisor, Hottgenroth supports skilled tradespeople, energy consultants, planners, and municipalities in digital building surveying, planning modern HVAC and electrical systems, and efficiently implementing renovation and new construction projects. The core HottCAD software creates a unified data model for all trades and intelligently links planning and project data. This enables precise designs, clear documentation, and a smooth workflow between office and construction site. With over 250 qualified employees and locations in Germany and Austria, and more than 60,000 customers, Hottegenroth is one of the leading software providers for digital building technology.
Plan your visit to the trade fair!
