Hot&Cold.energy

We found your home

1 DARLEY TERRACE, BOLTON

End-terrace84 m²EPC E41Electric1930s

Estimated boiler replacement

£1,900–£3,200

For a end-terrace like yours · estimated installed cost

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Your options for this home

Boiler replacement

£1,900–£3,200

Estimated installed cost · 6.5–8 kW

  • Fuel confirmed on survey
  • Suitable for your home size
  • Combi or system options
See details
  • Preliminary heat requirement 6.5–8.0 kW from 84.0 m² and construction era 1930s.
  • Heating system type to be confirmed on survey.

New central heating

£3,940–£6,360

Complete system estimate · 6.5–8 kW

  • Boiler / heat source
  • Radiators (~8)
  • Pipework & controls
See details
  • A complete new system priced on ~8 radiators, pipework and a boiler.
  • Radiator count is indicative from floor area and confirmed on survey.

Home air conditioning

£3,800–£5,700

Multi-split system estimate · 4–6 kW · ~3 units

  • Approx. 3 indoor units
  • Heating & cooling
  • Professional installation
See details
  • Total floor area is not the same as conditioned area; this reflects the selected room scenario.

Heating & cooling profile

Based on this property's recorded characteristics, this 84m² 1930s end-terrace home has a current EPC rating of E41 and its recorded heating. HotAndCold estimates a space-heating requirement of approximately 6.5–8.0kW. The recorded EPC score sits towards the lower end of the efficiency range. Its modelled space-heating intensity per square metre is moderate.

Estimated space-heating intensity
7795 W/m²
moderateProperty data confidence: Good

Hot&Cold snapshot

Property size
Smaller
Energy efficiency
Lower
Heating intensity
Moderate
Improvement potential
High
Main heating fuel
Non-gas
Cooling requirement
Medium

What stands out about this home

High recorded EPC improvement potential

Why this estimate?

We calculate estimates using your property's size, type, age, heating fuel and EPC rating, along with typical installation costs, not a professional heat-loss survey.

How we calculated this

84 m²
Floor area
+
end terrace
Property type
+
EPC E41
Energy rating
Hot&Cold property model
6.5–8 kW
Estimated heating requirement for this property

What we found about your home

Property type
End-terrace
Floor area
84 m²
Energy rating
EPC E41
Main heating fuel
Electric
Approx. age
1930s
Location
BOLTON, Bolton

We use publicly available data and industry models to generate this estimate. A final survey by an installer may vary.

How this home compares locally

Based on 81321 EPC-recorded properties nearby.

Floor area
+11%
11% larger than the local median

Sale history

Recorded sales for 1 DARLEY TERRACE from HM Land Registry Price Paid data.

  1. £85,000
    Dec 2022 · Semi-detached
  2. £62,250
    Apr 2012 · Semi-detached

Contains HM Land Registry data © Crown copyright and database right. Sale prices are historic and not a current valuation.

Building

Built form
End-terrace
Internal area (EPC)
84 m²
Building footprint
~60 m²
Approx. dimensions
~11.3 × 8.2 m
Main building axis
E–W
Nearest building
0.0 m

Footprint & dimensions derived from Overture Maps building data (ODbL). Approximate, not survey-grade.

How this home is constructed & heated

Recorded on its Energy Performance Certificate.

Walls
Cavity wall, filled cavity
Roof
Pitched, 150 mm loft insulation
Windows
Fully double glazed
Main heating
Room heaters, electric
Heating controls
Programmer and appliance thermostats
Hot water
Electric immersion, off-peak
Floor
Solid, no insulation (assumed)

Energy improvement potential

Current
E41
Potential
C78
+37
High improvement potential

Recommended improvements for this property

Measures from this home’s official Energy Performance Certificate assessment that could raise its rating and cut running costs, specific to 1 DARLEY TERRACE, BOLTON, BL1 3DP.

  1. 1
    Floor insulation (solid floor)Indicative cost: £4,000 - £6,000

    Insulation of a floor will significantly reduce heat loss; this will improve levels of comfort, reduce energy use and lower fuel bills. Further information about floor insulation is available from many sources including www.energysavingtrust.org.uk/northernireland/Insulation/Floor-insulation.

  2. 2
    Solar water heatingIndicative cost: £4,000 - £6,000

    A solar water heating panel, usually fixed to the roof, uses the sun to pre-heat the hot water supply. This will significantly reduce the demand on the heating system to provide hot water and hence save fuel and money. The Solar Trade Association has up-to-date information on local installers.

  3. 3
    Solar photovoltaic panels, 2.5 kWpIndicative cost: £3,500 - £5,500

    A solar PV system is one which converts light directly into electricity via panels placed on the roof with no waste and no emissions. This electricity is used throughout the home in the same way as the electricity purchased from an energy supplier. The British Photovoltaic Association has up-to-date information on local installers who are qualified electricians. It is best to obtain advice from a qualified electrician. Ask the electrician to explain the options.

  4. 4
    Add additional 80 mm jacket to hot water cylinderIndicative cost: £15 - £30

    Increasing the thickness of existing insulation by adding an 80 mm cylinder jacket around the hot water cylinder will help maintain the water at the required temperature; this will reduce the amount of energy used and lower fuel bills. The jacket should be fitted over the top of the existing foam insulation and over any thermostat clamped to the cylinder. Hot water pipes from the hot water cylinder should also be insulated, using pre-formed pipe insulation of up to 50 mm thickness (or to suit the space available) for as far as they can be accessed to reduce losses in summer. All these materials can be purchased from DIY stores and installed by a competent DIY enthusiast.

  5. 5
    High heat retention storage heaters and dual immersion cylinderIndicative cost: £2,000 - £3,000

    Modern storage heaters are less expensive to run than the direct acting, on-peak heating system in the property. A dual-rate electricity supply is required to provide the off-peak electricity that these heaters use; this is easily obtained by contacting the energy supplier. Ask for a quotation for high heat retention heaters with automatic charge and output controls. A dual-immersion cylinder, which can be installed at the same time, will provide cheaper hot water than the system currently installed. As installations should be in accordance with the national wiring standards, only a qualified electrician should carry out the installation. Ask a qualified electrical heating engineer to explain the options, which might also include switching to other forms of electric heating.

  6. 6
    Flat roof or sloping ceiling insulationIndicative cost: £850 - £1,500

    Insulation of a flat roof or sloping ceiling will significantly reduce heat loss through the roof; this will improve levels of comfort, reduce energy use and lower fuel bills. Where the weatherproof membrane is sound and the roof construction is appropriate, suitable insulation can be placed on top of the roof membrane (inverted roof). Alternatively, where the weatherproof membrane needs to be replaced insulation can be provided under the weatherproof membrane (warm roof). Further information about roof insulation and details of local contractors can be obtained from the National Insulation Association (www.nationalinsulationassociation.org.uk).

Source: the property’s domestic EPC recommendations (open data). Indicative only, get a professional survey before committing to any measure.

Energy rating history

Recorded change: -14 EPC points across 3 certificates.

  1. 2012D55
  2. 2022F33
  3. 2023E41
A
B
C
D
E
F
G
Current: E41Potential: C78

Common questions

How much does a replacement boiler cost for a property like this?+

For this property we estimate an installed cost of £1,900–£3,200. This is indicative and based on the property's size, type and energy characteristics, your final price depends on equipment choice and an installer survey.

What size boiler might this property need?+

Our preliminary model estimates a heat requirement of around 6.5–8 kW. An installer confirms exact sizing on a heat-loss assessment.

How much would air conditioning cost here?+

A multi-split installation is estimated at £3,800–£5,700, depending on how many rooms you want to cool (around 3 indoor units in a typical layout).

Are these guaranteed prices?+

No, they are indicative estimates to help you understand likely costs before speaking to an installer. Your final price depends on equipment choice, installation complexity and a survey.

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