Skip to Content
📐 MCS Compliant Design • Expert Engineering

Heat Pump System
Design & Specification

Correct system design is fundamental to every heat pump installation. Our expert engineers produce fully MCS-compliant designs covering heat loss calculations, schematics, underfloor heating layouts, radiator sizing and complete bills of materials.

20+ Years
Design Experience
3,500+
Systems Designed
MCS
Certified
Heat pump system design schematic

Why Correct Design Matters

Proper system design ensures optimal performance, efficiency and longevity

⚡

Maximum Efficiency

A correctly sized system operates at peak efficiency. Oversized heat pumps cycle on and off frequently, wasting energy and increasing wear.

💰

Lower Running Costs

Accurate heat loss calculations ensure the system delivers exactly the heat required, avoiding unnecessary energy consumption and keeping bills as low as possible.

✅

MCS Compliance

Our designs follow BS EN 12831 and MCS Standard MIS 3005, ensuring full compliance for the Boiler Upgrade Scheme and other government funding.

🏠

Year-Round Comfort

Room-by-room heat loss analysis means every part of the building reaches the correct temperature, with no cold spots or overheating.

🔧

Simplified Installation

Detailed schematics and complete bills of materials mean installers arrive on site with everything they need, reducing time and avoiding costly mistakes.

📋

Professional Documentation

Share comprehensive project packs with your customers, demonstrating a professional and high-quality service from start to finish.

3D plant room render

Our Design Process

From initial survey data to a complete installation-ready package, our engineers handle every detail.

1

Building Survey & Data Collection

We gather detailed information about the building fabric, dimensions, insulation levels, glazing, occupancy and existing heating system.

2

Room-by-Room Heat Loss Calculation

We calculate heat loss for every room in accordance with BS EN 12831, accounting for building fabric U-values, ventilation rates, internal and external design temperatures.

3

Heat Pump Specification & Sizing

Based on total heat demand and domestic hot water requirements, we select and size the correct heat pump to meet the building's needs efficiently.

4

System Schematic & Plant Room Layout

We produce detailed schematics specifying all components, pipework and connections. Where required, we provide 3D plant room renders for your customer.

5

Complete Bill of Materials

Every component required for the installation is listed and can be supplied directly, so your team can arrive on site fully prepared.

Our Design Services

Comprehensive design solutions for every aspect of your heat pump installation

🌡️

Heat Load & Heat Loss Reports

We carry out detailed room-by-room heat loss calculations considering the building fabric, U-values of walls, floors, roof and glazing, air exchange rates, mean internal and external temperatures and insulation levels.

Reports are produced as professional documents you can share with your customer as part of a project pack, demonstrating a thorough and compliant approach.

🏗️

Underfloor Heating Design

We design underfloor heating systems for both domestic and commercial projects, with precise calculations for pipe spacing, flow rates and water temperatures to match the heat pump's output.

You receive a complete design and kit list that can be delivered direct to site, ready for installation to begin.

♨️

Radiator System Design

Heat pumps operate at lower flow temperatures than traditional boilers, so radiators must be correctly sized to deliver the required output at these temperatures.

We stock over 200 radiators and fan coil units from the Olimpia Splendid range and can design a system using these products or your preferred radiators.

🌍

Ground Collector Field Design

For larger projects of 3 or more properties, our field design service ensures the ground array delivers the required heat demand within the available land area.

We advise on whether vertical boreholes or horizontal collectors are most suitable and whether properties could benefit from shared ground loop arrays.

What You Receive

Every design package includes a comprehensive set of professional documents and specifications, ready for installation.

✓ Room-by-room heat loss report (BS EN 12831 compliant)
✓ Heat pump specification and sizing document
✓ Full system schematic with all components
✓ 3D plant room render (where required)
✓ Underfloor heating layout design
✓ Radiator schedule with low-temperature output data
✓ Complete bill of materials
✓ Customer-ready project pack documentation
System design documentation

Frequently Asked Questions

Common questions about our system design services

A heat loss calculation determines exactly how much heat a building needs to maintain comfortable temperatures on the coldest days. Without this, a heat pump may be undersized (leaving rooms cold) or oversized (wasting energy and increasing costs). It is also a requirement under MCS standards for grant eligibility.

We need building plans or floor layouts with room dimensions, details of wall, floor and roof construction (including insulation), window and door specifications, the property's location (for external design temperature), current heating system details and domestic hot water requirements.

Yes. MCS Standard MIS 3005 requires a room-by-room heat loss calculation carried out in accordance with BS EN 12831. This is mandatory for any installation that claims the £7,500 Boiler Upgrade Scheme grant. Our designs are fully MCS compliant.

Absolutely. We design systems for new-build properties, renovations and retrofit projects where an existing boiler is being replaced with a heat pump. Each scenario requires different considerations, and our engineers have extensive experience across all building types.

Yes. We design both underfloor heating and radiator systems specifically optimised for heat pump operation. Heat pumps work most efficiently at lower flow temperatures, so emitter sizing is critical. We can also design hybrid systems combining underfloor heating on ground floors with radiators upstairs.

A typical domestic system design is completed within 5 to 10 working days from receiving all required information. Larger or more complex commercial projects may take longer. We will always confirm the expected timescale when you submit your design request.

Heat loss measures the rate at which heat escapes a building through its fabric and ventilation. The heat load is the total heating demand the system must meet, combining heat loss with domestic hot water requirements and any additional factors. Both are calculated as part of our design process.

Ready to Get Your System Designed?

Request a design quote or speak to our engineering team about your next project. Whether it's a single dwelling or a multi-property development, we have the expertise to deliver.