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What are the spots?carbon dioxide emissionsfuel costs They show the relative Cost Savings and Reduced CO2 emissions.

Money
Saving
Tips
 Energy 
Savings 
Each Year
 Money
Savings
Each Year
 CO2
Savings
Each Year
 Comments
dishwasher energy saving tips Dishwashers
Read More
30kWh -
90kWh
£4.62 -
£13.86

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11.01kg -
33.03kg
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Run the machine full and less often

boil less water in kettle energy saving tips Boiling Water
Read More
82kWh -
164kWh
£12.628 -
£25.256

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30.09kg -
60.19kg
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Boil only what you need. Savings depend on how much tea you drink!

fridge freezer energy saving tips Fridge Freezers
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50kWh -
400kWh
£7.7 -
£61.6

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18.35kg -
146.8kg
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Fridge maintenance. Savings depend on size, age and rating

dmoney saving tips tumble drying Tumble Dryers
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90kWh -
350kWh
£13.86 -
£53.9

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33.03kg -
128.45kg
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Operate Less often, clean filters, part dry clothes?

differnce in cost of shallow or deep bath Baths
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700kWh -
1400kWh
£30.1 -
£215.6

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147kg -
513.8kg
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Have shallower baths and consider how you heat water

change energy supplier to save money Change Supplier
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0kWh -
0kWh
£0 -
£500

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0 -
0
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save money and have a beerSwitch! This is the single simplest way of saving money. This is equivalent to 100 pints of beer!

shower or power shower which is cheaper Shower of Power Shower
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120kWh -
1100kWh
£18.48 -
£242

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25.2kg -
403.7kg
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Aviod immersion heated power showers

save money and energy with good loft insulation Install Loft Insulation
Read More
3000kWh -
3750kWh
£129 -
£161.25

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630kg -
787.5kg
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Modern loft insulation in a 3 bed semi - these numbers are for Gas, savings are greater for other fuels

save money and energy with good loft insulation Improve Loft Insulation
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1000kWh -
1500kWh
£43 -
£64.5

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210kg -
315kg
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Modern loft insulation in a 3 bed semi - these numbers are for Gas, savings are greater for other fuels

This table is under construction there are more tips here.

Measures to reduce fuel bills: ROI* is the time it takes in years to return the investment in fuel savings for an average gas heated 3 bed semi-detached house.
Measure ROI*
hot water tank insulation save energy save money Lagging 1 Year
loft insulation energy saving Loft Insulation 2 Years
cavity wall insulation energy saving Cavity Wall Insulation 2.3 Years
underfloor insulation energy saving Underfloor Insulation 4.4 Years
solid wall insulation energy saving Solid Wall Insulation 15.8 Years
double glazing energy saving Double Glazing 58.1 Years
Renewable Energy Measures ROI** is the time it takes in years to return the investment in energy. The table assumes no government incentive schemes are used (FIT or RHI).
Measure ROI**
solar hot water energy saving costs Solar Hot Water 11 to 62 Years
ground source heat pump investment costs Heat Pumps 4 to 81 Years
domestic wind power costs Wind Power 16 to 32 Years
solar PV costs and investment Solar Photovoltaics 13 ± 3 Years
Heat Loss and Insulation



Heat Loss

 

Introduction

If you have thermostatically controlled heating in your home, and most of us do, then your boiler will be controlled by the temperature measured in a heat lossparticular area in your home i.e. where the thermostat is placed! Regardless of how well insulated you home is the boiler will burn fuel and supply heat to your radiators until the temperature set on this thermostat is reached, before switching itself off. This does not mean that all of the rooms in the house are at the main thermostat temperature, their temperature will be dependent on the heat loss from the room, the radiator heat output of each room and the individual radiator thermostat (if you have them fitted). So the more you can do the reduce heat loss from your home the more rapidly the desired temperature will be reached and the earlier the boiler will switch off, ultimately reducing the amount of fuel you burn and amount you pay.

Last Updated on Sunday, 22 November 2015 22:19
 

Solid Wall Insulation

solid wall insulation investment
 Cost:  High
 ROI:  15.8 Years
 Skill:  Specialist
 Energy Saving:  High
 CO2 Saving:  High
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

If you have a very old house with solid walls then you are losing a lot of heat through the walls. Solid walls transmit heat at, at least twice the rate that uninsulated cavity walls do. Throughout the heating and insulation section of this site an average house is used and assumes that the walls have cavities, such that a three bed house with no insulation measures, is approximated to use 20,000kWh per year and the 5 bed house is approximated to use 30,000kWh. With a solid wall house the starting point is higher about 20% higher. So for this section we will use the numbers 24,000kWh for the smaller house and 36,000kWh for the larger house for the calculations.

Last Updated on Sunday, 12 March 2017 20:37
 

Cavity Wall Insulation

install cavity wall insulation save energy and money
 Cost:  Medium
 ROI:  2.3 Years
 Skill:  Specialist
 Energy Saving:  High
 CO2 Saving:  High
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

If you have cavities in your walls which are not already filled with insulation then you have a great opportunity to save quite a lot of money. Most household heat is lost through the walls and anything to slow this down helps. The story is similar to loft insulation, you can reduce your energy bill for heating by up to 25%, but again more realistically 20%. The table below calculates the effect of only insulating your cavities considering several main household fuels and estimates a payback time for the investment. For a larger house cavity wall insulation will cost £550 and for the smaller house about £400.

Last Updated on Thursday, 06 April 2017 15:07
 

Loft Insulation

loft insulation good investment save money
 Cost:  Low
 ROI:  2 Years
 Skill:  DIY-Skilled
 Energy Saving:  High
 CO2 Saving:  High
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

Since heat rises it follows that heat loss through the roof is a large contributor to energy waste in your house. By installing modern 290mm thick insulation in your loft space you could save up to 25% of your heating bill but perhaps more realistically by 20%. By upgrading old thin insulation you may also be able to save an additional 7 or 8% of you bill.

Last Updated on Monday, 06 March 2017 14:28
 

Underfloor Insulation

underfloor insulation great way to save energy
 Cost:  Low
 ROI:  4.4 Years
 Skill:  DIY Skilled
 Energy Saving:  Medium
 CO2 Saving:  Medium
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

If you have timber floors, mineral wool insulation* can be used between the joists to insulate your floor. Assuming this is the only insulation measure installed in your house you can reduce the amount of heat loss through your floor by about a half and can therefore reduce your energy bill by about 7 or 8%.

Last Updated on Thursday, 06 April 2017 15:30
 

Lagging

enery savings by lagging your hot water cylinder
 Cost:  Low
 ROI:  1 Year
 Skill:  DIY-Easy
 Energy Saving:  Medium
 CO2 Saving:  Medium
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

It is fairly obvious that hot water pipes and hot water storage cylinders should be insulated to prevent heat loss. Newer cylinders already have insulation pre fitted, but if your tank is older and un-insulated then according to the Energy Savings Trust by fitting a hot water jacket you will save about £50 per year. Your savings would be even more however if you regularly use an electrical immersion heater, since it costs a lot more to heat water with electricity.

Given that a new thick jacket (75mm) for a hot water tank costs about £15, it should pay for itself in less than six months. Even upgrading an old thinner jacket, is worth considering and will pay back the investment in about 2 years.

This energy/money saving measure is almost a must do. Even if you are renting off a landlord who is too tight fisted to put a jacket on the cylinder, you could buy one and take it with you when you leave!

Insulating hot water pipes will save you less, possibly £10 per year but DIY installation is very easy and materials will only cost about £10. So it will only take a year to payback this investment.

Last Updated on Thursday, 28 February 2013 22:03
 

Double Glazing

double glazing bad investment just to save energy
 Cost:  High
 ROI:  58.1 Years
 Skill:  Specialist
 Energy Saving:  Medium
 CO2 Saving:  Medium
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

Replacing your windows with double glazing to just save money does not actually make a lot of sense, you will reduce heat flow through you windows by at least a half and again assuming this is the only insulation measure installed in your house you should reduce you overall energy bill by between 5% and 10%. For the smaller 3 bed house assuming you save the maximum 10% of your heating costs you should save £70 each year if you are gas heated and if it cost about £5000 to install the windows the investment will payback in about 70 years.

Last Updated on Sunday, 05 March 2017 21:07
 


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