Solar Hot Water Calculator

This solar hot water calculator shows the energy, CO2 emission and financial savings that a SOLFEX solar thermal system could yield. It also tells you which SOLFEX products would be needed for the installation.

Step 1 of 4 - Tell us about you

Please select an option below to continue.

Step 2 of 4 - Tell us about the property on which the system will be installed

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Yes No


Roof orientation

Recommended
No Solfex Packages currently available
Not Recommended
o from north

Roof pitch


o

Roof overshading


Step 3 of 4 - Tell us about the current hot water heating system

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Step 4 of 4 - Tell us about the system you would like to install

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Your Results

The savings

Annual energy savingkWh
FREE baths
OR
FREE showers

Replaced fuel energy saving£
Annual renewable heat incentive income at 19.20 p/kWh£
Pumping cost£
Estimated annual income (year 1) including RHI£
Estimated annual income (year 1) exluding RHI£
£

Replaced fuel CO2 savingskg
Pumping CO2 emissionskg
Annual CO2 savingskg
Miles driven in a 1.4 litre car

Hot water system contribution

This chart shows the monthly contribution of the SOLFEX solar thermal system to the hot water consumption over a typical year:

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Solar thermal system contribution
Additional heating

Property details

Number of bedrooms
Number of bathrooms
Number of additional showers
Roof orientation Azimuth
Roof pitch o
Roof overahading

Current hot water system

Replaced fuel
Backup heating type
Water efficient dwelling?

Solar thermal system details

Collector modelCylinder model
Collector typeCylinder type
Installation typePV pump installed
Roof fixing type

The SOLFEX components required for the installation are:

Product codeProduct description

While we use reasonable efforts to ensure that any results from your use of this calculator (the "Results") are reasonably accurate (having regard to the level of data input) they are published without any guarantees, conditions or warranties as to their accuracy or completeness. You are responsible for verifying the accuracy of the Results. The Results are not intended to amount to professional advice or any other type of advice on which reliance may be placed. We shall not be liable for your use of the Results (or any reliance you place on them) or, for any advice given to a third party based on such Results (or any reliance placed on them by a third party).