Boilers: Boiler and heating controls http://www.which.co.uk/home-and-garden/heating-water-and-electricity/guides/boiler-and-heating-controls/the-best-central-heating-controls/ The best central heating controls Buying an efficient new boiler is only the first step in saving money on your heating costs. Outdated heating controls waste your money Upgrading from an old-fashioned thermostat to a programmable room thermostat gives you more options for controlling your heating Out-of-date central heating system components and controls can lead to wasting energy and potential problems in several areas. Hot water cylinder supplied by gravity-fed water - stored water is slow to reheat. No cylinder thermostat - excessive stored water temperature and risk of scalding. No cylinder insulation - heat is wasted through the surface of the cylinder. No room thermostat - rooms are too hot. Lack of thermostatic radiator valves (TRVs) - excessive room temperatures and poor heating system balancing. Absence of boiler interlock - the boiler stays hot and cycles unnecessarily during programmed heating periods. As a householder, you might not notice these issues, but they'll be wasting your money in the long run. Also, take a look at our page on boiler energy efficiency to find out more about how much an inefficient one could be costing you, and to work out if you need a new one. Get the best heating controls The type of heating controls you need will depend on the type of heating system you have and whether your hot water comes direct from your boiler or via a hot water cylinder. You should discuss which controls you need for your home with your heating engineer when you have a new boiler or heating component installed. Talk to your boiler installer about the type of controls you need and how to set them There are four main types of heating control: timer – turns your boiler on or off at set times room thermostat – measures how warm your room is and adjusts the boiler operation accordingly programmer – lets you set different times and temperatures for different days of the week thermostatic radiator valves (TVRs) – allow you to adjust the temperature of individual radiators and turn them off completely To find out more about how each type controls your heating see our guide to boiler and heating controls. Controls to use with heat-only boilers Your system should include: programmable room thermostat separate timing capability for hot water hot water cylinder thermostat thermostatic radiator valves on all rooms except the one with the room thermostat motorised valves - to control the flow of water from the boiler to heating and hot water circuits automatic bypass valve - used to maintain a minimum water flow rate through the boiler when TVRs are operating boiler interlock - a wiring arrangement to prevent the boiler firing when there is no demand for heat

1. http://www.which.co.uk/home -and-garden/heating-
water-and-electricity/guides/boiler-and-heating-
controls/the-best-central-heating-controls/
Boilers: Boiler and heating
controls

2. The best central heating controls
Buying an efficient new boiler is only the first step in saving money on your
heating costs.
Outdated heating controls waste your money
Upgrading from an old-fashioned thermostat to a programmable room thermostat
gives you more options for controlling your heating
Out-of-date central heating system components and controls can lead to wasting
energy and potential problems in several areas.
Hot water cylinder supplied by gravity-fed water - stored water is slow to reheat.

3. No cylinder thermostat - excessive stored water temperature and risk of
scalding.
No cylinder insulation - heat is wasted through the surface of the cylinder.
No room thermostat - rooms are too hot.
Lack of thermostatic radiator valves (TRVs) - excessive room temperatures
and poor heating system balancing.
Absence of boiler interlock - the boiler stays hot and cycles unnecessarily
during programmed heating periods.
As a householder, you might not notice these issues, but they'll be wasting your
money in the long run.
Also, take a look at our page on boiler energy efficiency to find out more about
how much an inefficient one could be costing you, and to work out if you need a
new one.

4. Get the best heating controls
The type of heating controls you need will depend on the type of heating system
you have and whether your hot water comes direct from your boiler or via a hot
water cylinder.
You should discuss which controls you need for your home with your heating
engineer when you have a new boiler or heating component installed.
Talk to your boiler installer about the type of controls you need and how to set
them

5. There are four main types of heating control:
timer – turns your boiler on or off at set times
room thermostat – measures how warm your room is and adjusts the boiler
operation accordingly
programmer – lets you set different times and temperatures for different days of
the week
thermostatic radiator valves (TVRs) – allow you to adjust the temperature of
individual radiators and turn them off completely
To find out more about how each type controls your heating see our guide to
boiler and heating controls.

6. Controls to use with heat-only boilers
Your system should include:
programmable room thermostat
separate timing capability for hot water
hot water cylinder thermostat
thermostatic radiator valves on all rooms except the one with the room
thermostat
motorised valves - to control the flow of water from the boiler to heating and
hot water circuits
automatic bypass valve - used to maintain a minimum water flow rate
through the boiler when TVRs are operating
boiler interlock - a wiring arrangement to prevent the boiler firing when there
is no demand for heat
Find out more about heat-only boilers.

7. Controls to use with combi boilers
Your system should include:
programmable room thermostat
thermostatic radiator valves on all rooms except the one with the room thermostat
automatic bypass valve - used to maintain a minimum water flow rate through
the boiler when TVRs are operating
boiler interlock - a wiring arrangement to prevent the boiler firing when there is
no demand for heat

8. Using heating controls effectively
Effective heating controls let you take charge of when, where and at which
temperature your heating is operating.
Simple changes that will make efficient use of your heating controls can make a
big difference:
Turning down your thermostat by just 1 C can save you £55, according to the
Energy Saving Trust.
Zone your heating to the rooms you use the most.
Programme your heating to only work when the house is occupied.
Set your thermostatic radiator valves (TVRs) to a low temperature.