Full System Design
Bespoke heating and plumbing design tailored to your property and needs.
Precision-Engineered Comfort Starts Here
At Tag Renewables, we understand that every home and business is unique — and so are its heating and plumbing needs. Our Full System Design service delivers a complete, tailored solution that integrates the latest energy-efficient technologies with a layout that’s optimised for your space, lifestyle, and long-term savings.

What’s Included in Our Full System Design?
Our Full System Design Process
Your journey with Tag Renewables Ltd.
Free Property Survey & Consultation
We begin by visiting your home or site to understand your heating and hot water needs, assess the layout, and discuss your goals.
Custom Design Proposal
Based on your property and preferences, we create a tailored heating and plumbing system design — optimised for performance, comfort, and efficiency.
Expert Engineering & Technical Drawings
Our certified design team prepares all technical drawings, calculations, and documentation to ensure your system is build-ready and fully compliant.
Optional Installation & Ongoing Support
We can work with your builders or handle the full installation ourselves. After completion, we provide full system handover, user guidance, and long-term support.

Designed for New Builds, Renovations & Retrofits
Whether you’re building from the ground up, renovating an older home, or replacing outdated systems, our Full System Design service is tailored to your specific needs and property type:
- Homeowners – Gain total comfort and lower bills
- Developers – Deliver high-performance heating in line with SAP & EPC standards
- Architects & Contractors – Seamless collaboration for a build-ready solution

Make the Switch with Tag Renewables Ltd
Take advantage of the Government’s £7,500 Boiler Upgrade Scheme (BUS) to make your transition to an energy-efficient heat pump more affordable. Let Tag Renewables help you check your eligibility and start saving today.
Why Choose Tag Renewables Ltd.?
- Expertise You Can Trust: With years of experience in renewable heating and plumbing, our team of certified engineers and designers brings unmatched technical know-how to every project.
- Future-Ready Technology: We integrate heat pumps, solar panels, smart controls, and more — ensuring your system is modern, eco-friendly, and built to last.
- No One-Size-Fits-All: Every design is customised. We don’t believe in cookie-cutter installations — just smart systems, engineered for your comfort.
Testimonials
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"Huge difference to our energy bills!"
We had an air source heat pump installed earlier this year by Tag Renewables, and we couldn't be happier. The house stays warm and comfortable even on colder days, and we’ve already noticed a big drop in our energy bills. It’s also reassuring to know we're using a more environmentally friendly system. The installation was smooth, and the team were professional from start to finish. Highly recommend making the switch!
— Sarah & Mark J., Gloucestershire
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"Outstanding service from start to finish!"
We recently had an air source heat pump installed by Tag Renewables and I can't praise the team enough. From the initial quote to the final handover, they were professional, knowledgeable, and genuinely helpful. They took the time to explain everything clearly and made the whole process stress-free. The system works brilliantly, and it's clear these guys really know what they’re doing. If you're thinking about going renewable, don’t go anywhere else — Tag Renewables are the best in the business!
— James H., Stroud
Get a Free Quote Today
Contact us today on 03330 166688 for a free consultation and discover how renewable heating solutions can benefit your home or business.
Frequently Asked Questions
What does a full system design for a heat pump include?
A full system design includes load calculations, heat loss/gain analysis, selection of the right heat pump unit, sizing of pipework and radiators (or underfloor heating), hot water integration, control systems, and proper placement of both indoor and outdoor units. It ensures maximum efficiency and comfort tailored to your property.
Why is system design important when installing a heat pump?
System design is critical to ensure that the heat pump operates efficiently and effectively. Poorly designed systems can lead to underperformance, higher energy bills, and shorter equipment lifespan. A well-designed system matches your home’s specific heating and cooling needs.
How do you determine the correct size of a heat pump for my property?
The correct size is determined through a heat loss calculation, which assesses insulation levels, building orientation, window types, occupancy, and other factors. Oversized or undersized units can be inefficient and uncomfortable, so precise calculation is essential.
Can a heat pump system be integrated with existing radiators or heating systems?
Yes, but it depends on your current system's compatibility. Often, radiators may need to be upgraded to larger, low-temperature models for optimal efficiency. The design phase will assess whether integration is possible or if upgrades are needed.
What types of heat emitters can be used in a heat pump system?
Heat pumps work best with low-temperature emitters such as underfloor heating, oversized radiators, or fan coil units. The choice of emitters is determined during system design based on your property and comfort preferences.
Does full system design affect the eligibility for government grants or incentives?
Yes, many grant schemes (like the Boiler Upgrade Scheme in the UK) require a properly designed and MCS-certified system. Accurate system design and documentation are essential for compliance and successful application.