Total Products under this Category: 115
Last updated: September 02, 2026
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G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.
Highlighted products: ServiceTitan, Jobber, Simpro, Housecall Pro, FieldPulse, BuildOps, HVAKR, and ServiceTrade.
Underlying data: [Grid® JSON](https://www.g2.com/categories/hvac/grids.json?focus%5B%5D=servicetitan&focus%5B%5D=jobber&focus%5B%5D=simpro&focus%5B%5D=housecall-pro&focus%5B%5D=fieldpulse-fieldpulse&focus%5B%5D=buildops&focus%5B%5D=hvakr&focus%5B%5D=servicetrade)
HVAC ResLoad-J is an ACCA-approved HVAC cooling and heating load calculation app for iPad.
HVAC Pipe Sizer Gas High application is designed to allow users to quickly size a simple high pressure (>= 1.5psi) gas piping system by inputting a number of piping and gas properties.
HVAC Pipe Sizer Gas Low is an application designed to allow users to quickly size a simple low pressure (< 1.5psi) gas piping system by inputting a number of piping and gas properties.
HVAC Pipe Sizer Steam is an application designed to allow users to quickly size a simple steam pipe system by inputting a number of piping and steam properties.
HVAC Psych HD is an interactive graphical psychrometric chart for iPad, that includes both IP and SI units.
HVAC Psychrometric Chart (HVAC Psych Chart) app is an interactive graphical psychrometric chart for iPad, and includes both IP and SI units.
HVAC Psychrometric LT application is designed to allow users to easily perform single-state HVAC psychrometric calculations using iPhone and iPad.
HVAC PT Chart is a free app designed to allow users to easily view the pressure-temperature properties of 100+ refrigerants.
HVAC ResLoad-J app is an ACCA-approved HVAC cooling and heating load calculation app for iPad.
HVAC ResVent 62.2 is designed to allow users to quickly perform comprehensive whole-building ventilation requirements for residential buildings.
Hysopt Designer Hysopt Designer is a powerful digital engineering platform that helps building energy professionals design, simulate, and optimise HVAC and heating/cooling systems for maximum energy performance, comfort, and carbon reduction. Built with deep thermodynamic modelling capabilities, it provides a physics-based approach to system design—enabling you to make informed decisions with quantifiable outcomes. What Hysopt Designer Does Best Hysopt Designer enables engineers to go beyond traditional rule-of-thumb HVAC design. It allows users to create a fully transparent and data-rich model of their building’s energy system, simulate real-world performance under various conditions, and accurately compare multiple design or retrofit scenarios. The result? Optimised designs that reduce energy usage, cut carbon emissions, and improve system efficiency—backed by hard data, not guesswork. Key Features Graphical System Modelling: Quickly create complex hydraulic and control schemes using an intuitive drag-and-drop interface. Detailed Simulations: Analyse dynamic system behaviour using time-based simulations that consider load variations, weather data, and control strategies. Design Optimisation: Run automated comparisons between different system configurations and select the most efficient solution. Error Detection & Validation: Identify design flaws early through automated sanity checks and performance diagnostics. Reporting & Transparency: Generate comprehensive reports with full visibility into system behaviour, energy performance, and savings potential. Who It’s For Hysopt Designer is ideal for: HVAC consultants and engineers seeking reliable simulation tools for new build or retrofit projects ESCOs and facility managers aiming to reduce carbon and energy costs Public sector and institutional clients (e.g., universities, hospitals) with complex energy systems Anyone working on decarbonisation or energy efficiency projects for large buildings
Hysopt Simulator Hysopt Simulator is a digital twin platform that enables building energy professionals to simulate the real-life behaviour of HVAC systems before, during, and after commissioning. It empowers users to validate system designs, troubleshoot performance issues, and fine-tune control strategies—all in a virtual environment—without disrupting actual operations. What Hysopt Simulator Does Best Hysopt Simulator provides a dynamic, physics-based simulation of heating and cooling systems, enabling accurate forecasting of energy performance and indoor climate outcomes. It is designed to detect system inefficiencies, test optimisation measures, and support continuous performance improvements throughout a building’s lifecycle. Key Features Live Digital Twin: Create a virtual representation of your building’s HVAC system, continuously updated with real operational data. Scenario Testing: Simulate “what-if” scenarios such as weather events, load changes, or equipment failures—before making changes on-site. Performance Validation: Compare simulated behaviour with actual measured data to detect anomalies or inefficiencies. Optimisation Support: Virtually test different control strategies or system upgrades to identify the best-performing options. Operational Transparency: Provide clear insights into system operation for both technical teams and non-technical stakeholders. Who It’s For Hysopt Simulator is built for: HVAC engineers and consultants seeking to validate and optimise system performance Facility and energy managers looking for continuous commissioning tools Maintenance teams needing root-cause analysis and fault detection Organisations focused on operational carbon reduction and performance assurance
Jobi is field service software for plumbers, HVAC techs and electricians.
