Louise France - domestic heating, plumbing and gas engineer
Welcome. I am a specialist in the design, installation and maintenance of domestic heating and hot/cold water systems. 

Around 84% of our energy bills are spent on heating & hot water - 60% heating, 24% hot water.

New standards for domestic heating came into on 6th April 2018
and form part of the building regulations.
These standards require that when installing a new combination boiler, an additional energy efficiency measure must be in installed at the same time.

Because no two houses are the same, the requirement is flexible to allow an appropriate choice to be made that reflects the nature of the building and the needs of the household.

The energy saving technologies that can be used to comply are:

     Flue gas heat recovery systems
     Weather compensation
     Load compensation 
     Smart controls with automation & optimisation functions

The most simple and cost effective way to achieve this is to install smart controls. These needn't be ones that connect to the internet. It is possible to fulfil the requirement with something as simple as Honeywell's new T4 which supersedes the CM900 series of programmable room stats. The Nest (shown above) does however fulfil more than one of the necessary requirements, but needs an internet connection for all features to work.


Poor pressure & flow of water into domestic properties in London can be an issue, especially if you have multiple bathrooms. Traditional shower pumps are noisy and cannot be used on mains pressure systems like combi's or unvented cylinders like megaflo's.

It is possible to improve the pressure and flow rate for your hot and cold water systems with the use of accumulators or mains booster pumps. These will enable you to run showers and taps simultaneously without a drop in the flow rate. 

Honeywell's evohome zoning system allows multiple zoning of rooms in larger properties.