Heat Pump

System design

Hassle-free designs, calculations, and project management.
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The essential tool for efficient design and project management

Heatpunk simplifies and speeds up your processes for planning and executing a heat pump installation.

Specify your complete system with ease by building accurate floor plans, running heat loss and performance calcs, comparing system options and completing all the paperwork.

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Heatpunk is free to use, or upgrade to Heatpunk Pro for access to specialist features


Everything you need to design and sell heat pump systems to your customers


Floor plan designer

Room by room heat loss calculations

Heat pump sizing and flow temp design

Radiator Sizing

DHW calculations

Performance Estimate

Sound Assessment

Heat pump design report

DNO forms

Free Training


Extra features to help your team collaborate and manage projects efficiently

£35 / month

All basic features, plus:

Project sharing & team management

Custom components

Sharing of custom components and material folders

Project file management

Email templates & sending

Project status

Pre-installation survey

Customisation of proposal documents


Additional forms and reports

Priority technical support


A bespoke, customised version of Heatpunk configured to meet your needs

Call to Discuss

Unlimited users

Custom branding

Custom forms and reports

User roles

Custom CRM integration

Dedicated server


Dedicated support & training

Want to see what it’s capable of?

We recommend booking onto a free training software to help you use Heatpunk most effectively. Alternatively, you can create a free account now and make a start on your projects!

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Heat loss calculations

Heatpunk uses information entered in the floorplan editor to calculate room-by-room heat losses for you - easy!

Floor Plan Designer

Compare heat pump options, select flow temperatures, and adjust your system so it meets heat loss requirements.

Project management

Generate performance and saving estimates, create MCS-required documents, and manage paperwork and tests related to the installation.

Kit Builder

Using the heat pump selected in your design, generate a complete kit at trade pricing. Order your full kit, including cylinder and ancillaries, in just a few clicks, and use our next-day delivery service!

Your new favourite lead gen tool.

Shrunk Punk is designed to be embedded in your website and quickly gives visitors an idea of the size of the heat pump they would need to heat their home - all without you lifting a finger!

Leads are stored in your Heatpunk Pro account so you can quickly follow up with a full quote for a heat pump installation.

Frequently Asked Questions

Is Heatpunk MCS-compliant?
How do I use the software?
Where can I purchase the system I’ve designed?
Can I share projects with my team?

Heatpunk is developed by the team at Midsummer

We’re one of the UK’s largest and longest-established distributors of renewable energy systems. We’ve used our decades of experience selling and installing systems to build cutting-edge software that will help your business grow.

Ready to try it out?

Create an account now to start exploring Heatpunk, or sign up for a free training session.

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