<https://www.pumpsalesdirect.co.uk/blog/sap-calculations-what-are-they/>
<http://schema.org/description>
"See why it pays to plan ahead and use energy-efficient heating, such as using a circulation pump, insulation and renewable energy sources in your project."
<https://www.pumpsalesdirect.co.uk/blog/sap-calculations-what-are-they/>