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Solar Systems

Solar Systems

The sun is by far the most abundant source of energy available on earth. Energy arriving at the earth's surface by way of solar radiation over a period of 40 minutes is the equivalent of the power used by the entire population of the earth in one year.

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Warm Air Systems

Many people have, and many are reluctant to change it because they cannot find a replacement to comply with Building Regulations (Part L) which was introduced on the 1st April 2005. In many cases people are feeling that they are being forced to change their ageing but much loved warm air system to a conventional system with radiators simply because there is no alternative on the market.

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What is the Unico System?

DSC00828The Unico System is a small duct central heating, air conditioning and ventilation system manufactured by Unico System International Limited (USIL), headquartered in Wales. The product has been on the market in the United States and Canada for the past 20 years, and over 250,000 of these systems have been installed there. The system has been profiled in numerous North American magazines and media outlets, most prominently on the television programme This Old House.

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Renewable Energy


Gas Technical Services can provide expert advice on sourcing the correct renewable energy package for your home.  You can also walk around our showroom where we have working renewable energy products, enabling you to gain a better understanding of exactly how it will look in your home

Vaillant EcoTEC Plus

Thermal Store 2

A Vaillant EcoTEC Plus Condensing Boiler connected to a Gledhill Thermal Store

Live Solar Display


Live Solar Hot Water DisplayLive Solar Hot Water Display

Vaillant VTK570/2 Vacuum tube collectors

 Solar Panels1

 4 Vaillant VTK570/2 Vacuum tube collectors being installed in Narberth

 Solar Panels 2


Reliability of Solar Water Heating

Reliability of Solar Water Heating Systems for Households.

An independent survey of domestic hot water solar systems installed in the UK between 1970 and 1994 was undertaken on behalf of the DTI.

A sample of 700 systems was analysed. The sample was designed to be representative in terms of major/minor manufacturers and installers and also type of collectors (flat plate and evacuated tubes).

The main conclusions were:

Solar systems can work reliably for 20 years or more.
There is little, if any, difference between current system performance and that when the system was new.
System performance has improved significantly over the years.
Half the systems have needed no new components and only 1% are considered unreliable. More modern systems have less problems. 68% of systems installed since 1986 have not needed new components.

Ongoing product development and product refinement means that there is now a wide selection of high quality and highly reliable solar water heating system products and components available in the UK market.