Delivering compliant, high-performing residential developments begins long before first fix at the concept and pre-construction stage. For contractors and project managers, early-stage heating system design plays a critical role in protecting programme timelines and safeguarding project budgets.

When heating strategy is finalised too late in the process, it can lead to redesign, emitter resizing, and procurement delays. By contrast, structured system design carried out early on provides clarity across project teams and supports smoother delivery on site.

Long established within Ireland’s home heating sector, Grant has further strengthened its support for main contractors, consultants and design teams by investing in advanced digital design software to enhance its free-of-charge Heating Design & Specification Service for new-build homes and multi-unit residential developments. The service has been widely used across the industry for many years, valued for its detailed heat loss calculations, technical accuracy, regulatory awareness and practical, time saving approach. The introduction of the upgraded software builds on this foundation, by enabling faster turnaround times, improved consistency across large-scale projects and clearer documentation for contractor review.

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Using the enhanced digital platform, Grant’s technical specialists carry out in-depth room-by-room heat-loss calculations, detailed emitter sizing and complete pipework circuit layouts. Automated calculation workflows reduce design time while annotated schematics and clear layout drawings provide project teams with structured specifications that can be reviewed, costed and integrated early within procurement programmes.

For low-energy, NZEB and Passive House standard homes, the system introduces advanced hydronic optimisation features, including automatic pipe sizing with flow-rate and pressure-drop calculations, alongside built-in system balancing. These capabilities support greater installation accuracy and reduce commissioning complexity.

Installer-ready outputs form a key part of the service, including schematic drawings, underfloor heating layouts, pipe circuits and material schedules. Standardised documentation improves communication between consultants, subcontractors and site teams supporting accurate first-fix installation.

The enhanced service continues to support compliance requirements, including the production of S.R. 50/MCS compliant heat-loss documentation, assisting contractors in demonstrating alignment with relevant building regulations and NZEB performance requirements while minimising late-stage design revisions.

Central to many new-build specifications is the award-winning Grant Aerona R290 air-to-water heat pump. Achieves A+++ ErP ratings, with SCOPs up to 4.88. The Aerona R290 heat pump is capable of 75°C flow temperature, however correct system design will ensure that a lower more efficient flow temperature is utilised. With outputs ranging from 4kW–16kW, the Aerona R290 range offers flexibility across varied property sizes and types.

By combining enhanced digital design capability with structured technical support, Grant’s Heating Design & Specification Service helps to clarify strategy early on for project teams. In supporting these teams, they can deliver compliant, efficient and future-ready homes across Ireland.

To avail of Grant’s free Heating Design and Specification Service, send house plans to [email protected].

Visit www.grant.ie for more information on Grant’s range of innovative heating solutions. Follow Grant on Facebook @GrantIRL, Instagram @Grant_IRL and LinkedIn @GrantEngineeringULC. Subscribe to the Grant YouTube channel @GrantEngineeringIE.

Think Heating. Think Grant.