As heat pumps become increasingly central to new-build and deep retrofit projects, successful performance depends on far more than the technology itself. An integrated approach to system design, specification and commissioning is fundamental to delivering the efficiency, reliability and comfort expected from today's low-carbon heating systems.
For building services engineers, M&E consultants, contractors and project teams, the opportunity to influence system performance begins well before installation. Accurate heat-loss calculations, correct sizing of heat pumps, hot water cylinders and heat emitters, together with effective system design and smart controls all contribute to delivering efficient, reliable and comfortable heating.
Grant's new home heating design software.
Barry Gorman, national renewables sales manager at Grant explained: “Unlike traditional boiler replacements, heat pump installations require a more integrated engineering approach. System performance is closely linked to the building’s heat demand, insulation levels, heat emitter sizing and selection and operating temperatures. A well-designed system enables lower flow temperatures, improving efficiency while maintaining occupant comfort.
“Domestic hot water provision, heat emitters, controls and associated system components should all be considered together to ensure compatibility, simplify commissioning and optimise long term performance. By taking this whole-system approach, engineers can help deliver heating systems that meet increasingly demanding energy performance standards while providing long-term reliability for homeowners.”
Grant’s Heating Design & Specification Service
Recognising the growing importance of design-led specification, Grant’s Heating Design & Specification Service supports consultants, building services engineers, contractors and project teams throughout the design process. Combining technical expertise with advanced digital design tools, the service helps simplify specification, improve project co-ordination and help ensure heating systems perform as intended.
The technical specialists at Grant develop comprehensive heating system specifications, including room-by-room heat-loss calculations in accordance with recognised standards such as SR 50 and MCS requirements, heat pump selection, heat emitter sizing and detailed pipework layouts. Detailed calculations, system schematics and technical guidance help improve site coordination, reduce installation complexity and support effective commissioning.
Grant’s Heating Design & Specification Service also supports the specification of complete heating solutions. Alongside the award-winning Grant Aerona R290 air-to-water heat pump range, the new Grant QR cylinder range has been developed specifically for heat pump applications, enabling engineers to specify compatible system components designed to work together as part of a complete heating solution.
Available in outputs from 4kW to 16kW, the Grant Aerona R290 range provides flexibility across a wide variety of residential applications, allowing engineers to accurately match system capacity to calculated building heat demand.
Grant’s Heating Design & Specification Service provides:
- In-depth room-by-room heat loss calculations in accordance with recognised standards;
- Heat pump selection based on calculated heat demand;
- Specification of compatible Grant QR hot water cylinders;
- Underfloor heating system design;
- Pipework layouts and technical drawings;
- Commissioning support for all Grant Aerona R290 heat pumps;
- Technical aftercare support through the Grant Service Network.
How to avail of the service:
- Send planning drawings to heatpump@grant.ie or complete the online Design & Specification Application Form
- Grant completes detailed heat-loss calculations and develops tailored heating system specification
- Technical support continues through installation, commissioning and aftercare.
As Ireland continues its transition towards low-carbon heating, engineering-led design will continue to play a defining role in the long-term performance of heat pump systems. Through its Heating Design & Specification Service, Grant supports engineers, consultants and project teams with the technical expertise needed to specify and install integrated heating solutions with confidence.