An Intergas HRE 36/30 combi boiler was selected as the best choice for their specific needs. Intergases unique design and its ability to be combi or system boiler at a press of a button, it allowed us to replace the existing combi with the Intergas combi until the rest of the system was ready to be seamlessly switch over to heating the cylinder. This meant that our client only needed to be without hot water and heating for a few hours on the first day of installation.

To allow for a possiable  future upgrade to solar hot water an Albion 210 litre Superduty HE Eco cylinder was chosen. The Superduty HE Eco is a vented twin coil cylinder with extra thick insulation. This meant if and when the client decided to get solar hot water all they have to do is connect the solar panels to the bottom coil. Until then the two coils were connected together to improve performance.

Albion Superduty HE Eco twin coil cylinder

The client had suffered with poor hot water performance (the bath hot water tap was very slow in filling the bath) a Salamander ESP 120 CPV 3.6 bar hot water pump was selected to boost the hot water performance
Salamander hot water pump
The Intergas HRE 36/30 was installed in a water priority configuration using a 3 way valve and cylinder sensor wired directly to the boiler. This configuration had a number of benefits such as rapid reheating of the hot water cylinder and because the Superduty had both coils connected together it could heat the hot water in a highly effective way by keeping the boiler flow temperature low.

This hot water priority configuration also meant that the client gets a much better control over the hot water compared to older, less efficient ways of heat cylinders. The temperature of the cylinder is set from the boiler (no more twiddling with cylinder stats)
It also means that the system is simpler with less spaghetti junction wiring to go wrong as everything is wired back to the boiler.

Intergas HRE 36/30 boilerMagnaclean(left)

To insure our clients had the best controls and the most efficient system, we install an outside sensor to enable weather compensation. In simple terms weather compensation turns up the central heat temperature when it is cold outside and back down when it is warmer. This increases the comfort as it does not overheat your home and also increase the efficiency of your heating system saving up to 20% off your heating bill.

For internal controls we used a Honeywell CM927 wireless programmable room thermostat. The CM927 uses a system called TPI which allows it to learn how quickly you home warms up and allows it to maintain whatever room temp you set.

Honeywell CM927 programmable room thermostat

We installed Drayton TRV4 thermostatic radiator valves throughout the client’s home to allow individual control of temperature in each room. The Drayton TRV4’s are liquid filled which means they are more accurate and responds better to temperature changes.


Drayton TRV4

The system was flushed with Sentinel X400 central heating cleaning fluid and inhibited with Sentinel x100. A Magnaclean was installed to insure an efficient and long life.

The client at handover got a more comfortable and efficient heating system and hot water performance that went from a poor 8 litres a minute at around 45 degree to a fantastic 20 litres a minute at 60 degrees. Meaning the bath would fill in a few minute not tens of minutes. Also a system that could be easily added to in the future if the client wanted solar hot water.

If you have any questions or you would like a quote please do not hesitate in contacting us