The current version of the calculator is free of charge. Level 2 and level 3 will have costs associated with them, and users may subscribe on an annual basis. The subscription fee will be made known once level 2 and level 3 versions of the calculator go live.

As per Level 1 but enables the engineer to see comparative running costs and carbon emissions for the property as surveyed, has additional parameters, and enables the engineer to create a duplicate “with improvements” i.e. new boiler (different efficiencies), controls, fuel options, customer improvements such as double or triple glazing, additional loft insulation, addition of cavity wall insulations, etc. This will enable engineers and manufacturers/fuel suppliers to demonstrate comparisons for end users.

As per level 2 but additionally applies inputted data into Sutherland Tables Comparative costs and carbon emissions tables so that the user can see how their innovative fuel and/or technology compares to other existing alternative fuels and technologies for that specific property. This would include an option to enable existing subscribers to choose any of the existing Sutherland Tables property types and locations should they not wish to model properties of their own choosing.

Once the paid versions of the calculator become available, users will be required to subscribe to the calculator on an annual basis. This will require setting up an online account, and making an online payment

No, the calculator is designed to be used as an online tool. This enables us to make modifications and improvements behind the scenes without inconveniencing users with the need to download updated versions of the calculator

The free version of the calculator (level 1) does not allow a copy of calculations to be saved. However, the subscription version of the calculator, ie level 2, will permit users to download and save pdf versions of calculations

We would encourage customers to pay for purchases online, as this is the most efficient and secure means of payment. However in certain circumstances we can accept cheques and handle BACs payments (admin charges apply)

We are often asked by customers to carry out one-off analysis, which we are more than happy to do. Just drop us an email or give us a call to discuss what you need – we will then provide you with a cost estimate and proposed schedule

We are often asked by customers to carry out one-off analysis, which we are more than happy to do. Just drop us an email or give us a call to discuss what you need – we will then provide you with a cost estimate and proposed schedule

If changes are being made to our calculator, these will happen behind the scenes and will appear seamlessly in the online calculator. We will contact you by email to let you know that an update has been made.