Central Heating


Whether you are changing an existing central heating system or you have a new installation, Sutton Gas Tech have the solution for you.

With access to the latest boiler technology we can offer one of the largest boiler selections that offer much higher efficiency ratings than those from twenty years ago, typically up to 90% and above is now possible.

With the rising cost of energy it’s important to maximise your boilers efficiency.

Combining the latest boiler technology with the latest control systems could yield even more efficiency savings by advanced control of the boiler usage.

Sutton Gas Tech are not affiliated to any one manufacturer and can help specify without being brand limited, we can supply and install an ‘A’ rated boiler correctly sized and controlled to your requirements, from any preferred manufacturer.

Some of the boiler brands we install

Vokera Glow Worm IDEAL Vaillant Baxi Worcester


Control systems come in all shapes and sizes, and the latest technologies use internet connected wireless thermostats to add a new dimension to today’s heating solutions.

The inclusion of systems like Nest and Hive allow us to remotely control our heating systems, for improved energy efficiency and convenience.

No longer do we have to turn our heating on or off at set times, but now we can tailor our usage more dynamically.

The traditional central heating and domestic hot water system would use a dual control timer.

These allow for timed control of both the central heating circuit and the hot water circuit separately, the hot water would be timed such that it pumped heated up water around an induction coil within a hot water tank, this system allowed a tank full of hot water to be heated indirectly.

With some hot water tanks there was also the possibility to have an immersion heater element within the tank as a secondary backup heat source, allowing the water to be heated via electricity usually overnight on a lower rated tariff. The drawback with either of these systems is that the tank of water takes several hours to be heated up to the required level and is limited by the capacity of the tank.

Today it is possible to add some of these enhanced control ideas into existing systems, Sutton Gas Tech are here to help, we can explain the different possibilities to you and work out what is the best fit to compliment your life style and your pocket.

Radiators & Valves

On the face of it buying a radiator seems a simple task, but each radiator is designed for a specific performance rating, and when combined together require a certain throughput from the boiler. Sutton Gas Tech can design your system to ensure that the boiler matches the required BTU output for your specific installation.

Selecting the correct radiator size is dependant on the room size you are attempting to heat and the ability to create a rate of change for a given volume of water.

Using these factors you can calculate the desired configuration to maximise the installation, too many radiators for the system will require a high load boiler, to few and the boiler will be working overtime as the radiators attempt to heat too larger space. Once we calculate the radiator usage we must include any ancillary heating elements like towel rails, these too must be included into the calculation.

Radiators chosen and boiler selected, we need to decide how we are going to control the head. The minimum control level is a simple timer attached either externally to the boiler or as part of the boiler itself. However this is not the most efficient way to control the system as all the radiators will be on at the same time whether heat is required or not, to solve this problem we can fit Thermostatic Radiator Values (TRV) to the radiators, thus giving them an independent control. In this system the radiator value closes when the temperature is reached stopping the boiler water from circulating in the panel.

The fact that the radiator stops circulating when not required allows the water to be used more efficiently within other radiators and reduces the required boiler load.

As the radiators close the water continues to circulate within the other radiators, if none of the radiators require heat the water continues to circulate in a loop without providing heat to any radiators. This is wasteful, and although we use the timer to reduce the period when the boiler is running, it could still be running even when not required. We can help with this situation too, we can include digital thermostats in zones around the dwelling, and if these thermostats are triggered we can either start or stop the boiler. One of the things to consider is that a system costing £1500.00 with minimal control could actually cost more to run than a £1800.00 system with thermostatic radiator values and digital boiler controls.

The last element to introduce to the heating system is Smart controls such as Hive or Nest. Using these systems it’s possible to move away from pre programmed patterns of usage and start to dynamically control the system for convenience or efficiency.