Welcome to Gas Technical Services Website

Boiler Replacements

Heating Installations & Upgrades  


There are many things to think about when it becomes time to upgrade your heating system or to install a new boiler.  With over 37 years of experience behind him, Paul Smith, the proprietor of Gas Technical Services, prides himself with always trying to give the best advice possible.  After all, it is not a job you want to do again in a hurry, and you want the new boiler to give you many excellent trouble free years.  We want the same, and our reasons are simple.

  • We give two years guarantee on every boiler installation.

  • At the end of the two years you can join our maintenance scheme, so if we do wrong by you, we are going to end up paying for it.

  • Pembrokeshire is a small place.  It takes a lifetime to build a reputation and only 5 minutes to loose it!


With every boiler replacement, heating upgrade or full central heating replacement, we always carry out a full site survey and inspection before we quote.  This is a FREE, NO OBLIGATION service, but enables us to ensure that what we are quoting you will best serve you and your family for years to come.  It also means that the quoted price is fixed, so once we enter into a contract with you, you can be assured that there will be no price changes during installation. Our installation teams, work cleanly and efficiently to ensure that you are 100% pleased with the work carried out and delighted with your final installation.  After all, your recommendation is our future.



We are happy to carry out a free site survey and to provide a free written quotation on any full heating system or system upgrade, with no obligation. To arrange a visit, call into our offices or give us a ring between Monday to Friday 9 am to 5 pm and Gwen will be more than happy to arrange a convenient appointment. Alternatively, you can e-mail us on This email address is being protected from spambots. You need JavaScript enabled to view it.


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Safety Check

Gas Safe Logo 200You must have your gas appliances safety-checked by a GAS SAFE REGISTERED installer every year. This is the only way to guarantee that they are working correctly. Never allow anyone without a valid GAS SAFE REGISTERED registration number to work on any of your gas appliances.

Appliances that are properly installed, serviced and adequately ventilated are efficient and safe. To avoid the accidental production of carbon monoxide and to ensure that you and your family are safe, you must:


our Systems

At Gas Technical Services, we can offer 3 types of heating system.  They are:

The Unico System

What is the Unico System?

The Warm Air System

What is the Warm Air System?

The Solar System:

What is the Solar System System?

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