Central Valleys · Wales
Bed Bug Heat Treatment in Central Valleys
Central Valleys covers Merthyr Tydfil and Caerphilly County Borough: Merthyr and the upper Taff, the Taff Bargoed and Rhymney valleys through Treharris, Bargoed and Ystrad Mynach, the Sirhowy valley at Blackwood, the Ebbw at Newbridge and Risca, and Caerphilly itself on the Cardiff fringe. Hubs follow the valleys so each community is reached by its own road.
CoverageMaps Pro™
Central Valleys coverage map
Select a service area to see its postcode districts. Outlines follow published authorities boundaries; the map shows geography, not confirmed availability.
CoverageMaps Pro™ — coverage shown is indicative. Final availability is confirmed at enquiry stage.
Contains OS data © Crown copyright and database right 2016–2025. Contains Royal Mail data © Royal Mail copyright and database right 2025. Contains National Statistics data © Crown copyright and database right 2016–2025. Source: Office for National Statistics licensed under the Open Government Licence v.3.0. CoverageMaps Pro™ software, presentation and coverage curation are our own and are not endorsed by ONS, Royal Mail or Ordnance Survey.
Merthyr Tydfil
Merthyr Tydfil
Postcode districts: CF47, CF48
CoverageMaps Pro™ has matched this location geographically — likely within our operating area, subject to confirmation.
Location search
Find your postcode, town or village
Enter a full postcode, a postcode district, a town, or a Central Valleys village. CoverageMaps Pro™ will show the district, the nearest service area and the region.
Geographic match only — not a confirmation of service
CoverageMaps Pro™ — coverage shown is indicative. Final availability is confirmed at enquiry stage.
Service hubs
Bed bug heat treatment hubs in Central Valleys
8 primary service hubs cover Central Valleys. Every town and village in the region is served from one of them — open a hub for its treatment detail and the areas it covers.
- Merthyr Tydfil17 areas · 1 locality · 2 postcodes
- Treharris9 areas · 0 localities · 1 postcode
- Caerphilly11 areas · 2 localities · 1 postcode
- Ystrad Mynach9 areas · 0 localities · 1 postcode
- Bargoed6 areas · 3 localities · 2 postcodes
- Blackwood8 areas · 2 localities · 1 postcode
- Newbridge6 areas · 1 locality · 1 postcode
- Risca8 areas · 0 localities · 0 postcodes
Areas we cover
Central Valleys districts, service areas and postcodes
Coverage grouped by authorities, with service areas, postcode districts and boundary detail from the verified geographic registry. A geographic match is not the same as confirmed service availability.
Merthyr Tydfil and Caerphilly are two separate unitary authorities. They are presented as one CoverageMaps Pro region because their valley communities form one practical service geography between the Heads of the Valleys road and the M4. Each table states the authority an address sits in.
Caerphilly
- Aberbargoed
- Abercarn
- Abertridwr
- Abertysswg
- Bargoed · CF81
- Bedwas
- Blackwood · NP12
- Caerphilly · CF83
- Cefn Fforest
- Cefn Hengoed
- Celynen
- Churchill Park
- Crosskeys
- Crumlin
- Cwmcarn
- Cwmfelinfach
- Deri
- Draethen
- Energlyn
- Fleur-de-lis
- Fochriw
- Gelligaer
- Hendredenny
- Hengoed
- Lansbury Park
- Llanbradach
- Llanfabon
- Machen
- Maesycwmmer
- Markham
- Nelson
- New Tredegar · NP24
- Newbridge · NP11
- Oakdale
- Pantside
- Pengam
- Pontllanfraith
- Pontlottyn
- Pontymister
- Pontywaun
- Rhymney
- Risca
- Rudry
- Senghenydd
- Tir-y-berth
- Trecenydd
- Trethomas
- Ty-Sign
- Wattsville
- Woodfieldside
- Wyllie
- Ynysddu
- Ystrad Mynach · CF82
Postcode districts
CF81 · CF82 · CF83 · NP11 · NP12 · NP24
- CF83 — Mostly Caerphilly; this district also extends into Cardiff, Rhondda Cynon Taf.
- NP11 — Mostly Caerphilly; this district also extends into Blaenau Gwent, Torfaen.
Merthyr Tydfil
- Abercanaid
- Aberfan
- Bedlinog
- Cefn Coed
- Cefn-coed-y-cymmer
- Dowlais
- Edwardsville
- Galon Uchaf
- Gellideg
- Heolgerrig
- Merthyr Tydfil · CF47, CF48
- Merthyr Vale
- Mountain Hare
- Penyard
- Pontsticill
- Quaker's Yard
- Treharris · CF46
- Trelewis
- Troedyrhiw
- Twynyrodyn
- Vaynor
Postcode districts
CF46 · CF47 · CF48
- CF48 — Mostly Caerphilly and Merthyr Tydfil; this district also extends into Powys, Rhondda Cynon Taf.
74 service areas and 9 villages, suburbs and localities are recognised by CoverageMaps Pro™ across Central Valleys, including Dowlais, Aberfan, Nelson, Hengoed, Pontllanfraith, Crosskeys, Bedwas, Llanbradach. Smaller places are routed to their nearest service area rather than given their own page.
Show the full postcode district table (9 districts) — district, main locality, service area and boundary notes
| District | Main locality | Service area | Notes |
|---|---|---|---|
| CF46 | Treharris | Treharris | Within Central Valleys |
| CF47 | Merthyr Tydfil | Merthyr Tydfil | Within Central Valleys |
| CF48 | Merthyr Tydfil | Merthyr Tydfil | Mostly Caerphilly and Merthyr Tydfil; this district also extends into Powys, Rhondda Cynon Taf. |
| CF81 | Bargoed | Bargoed | Within Central Valleys |
| CF82 | Ystrad Mynach | Ystrad Mynach | Within Central Valleys |
| CF83 | Caerphilly | Caerphilly | Mostly Caerphilly; this district also extends into Cardiff, Rhondda Cynon Taf. |
| NP11 | Newbridge | Newbridge | Mostly Caerphilly; this district also extends into Blaenau Gwent, Torfaen. |
| NP12 | Blackwood | Blackwood | Within Central Valleys |
| NP24 | New Tredegar | New Tredegar | Within Central Valleys |
Source: ONS Postcode Directory via postcodes.io (postcode districts, local authorities, parishes) and ONS 2013 LAD boundaries (geometry). OGL v3. Last verified 2026-08-17. Districts that straddle a boundary are shown with the boundary stated rather than claimed as Central Valleys coverage.
Property and access
What affects a Central Valleys heat treatment
The practical detail of the building changes the plan far more than the region does.
Valley terraces
The Taff, Rhymney, Sirhowy and Ebbw valleys hold dense stone terraces from the industrial period, often with adjoining roof and floor voids that are checked as part of a treatment.
Estate housing
Gurnos, Galon Uchaf, Lansbury Park and Graig-y-Rhacca hold large post-war estates where whole-property treatment is normally planned rather than single-room work.
Commuter housing
Caerphilly, Ystrad Mynach and Blackwood hold modern estates for the Cardiff and Newport commuter market where a discreet, planned visit is usually preferred.
Town-centre flats and conversions
Merthyr Tydfil, Caerphilly and Blackwood town centres hold flats above shops and subdivided buildings with shared access that are assessed together.
Supported and social housing
The valleys hold a large social-housing stock and supported accommodation, where communal areas are assessed alongside individual rooms.
Guest accommodation
Brecon Beacons gateway villages such as Pontsticill and Cefn Coed carry guest houses and holiday lets with changeover that work is planned around.
The treatment
How the treatment itself works
The method does not change between towns. These are the authoritative pages.
Quotations
How treatment is quoted in Central Valleys
Quotations follow the same national approach. There is no Central Valleys surcharge and no automated price — every quotation is prepared by a person.
Quoted individually
Every property is quoted on its own treatment requirements
Prepared by a person
No automated calculator and no published price list
Guarantee
Six-month guarantee
6-Month Guarantee
Our six-month guarantee provides additional reassurance following qualifying treatments. Full guarantee conditions are provided before treatment and form part of the customer agreement.
Terms and conditions apply. The guarantee is conditional, and known operational conditions include matters such as:
- Bed bug activity originating from an adjoining property
- Reintroduction following treatment
- Activity outside the agreed treatment scope
- Failure to comply with agreed preparation requirements
- Failure to follow relevant aftercare requirements
Full conditions are provided in writing before treatment. This page explains the principle of the guarantee only — it is not the customer agreement.
Guarantee InformationEvidence
Central Valleys treatment evidence
We do not publish invented local case studies. Anonymised Central Valleys evidence will appear here once genuine treatment records have been through our approval and anonymisation process.
Questions
Central Valleys questions
- Is Central Valleys one council?
- No. Merthyr Tydfil and Caerphilly are two separate unitary authorities, covered together as one practical service geography.
- Which hub covers the Rhymney valley?
- Bargoed covers the upper valley through New Tredegar to Rhymney and Pontlottyn; Ystrad Mynach covers Hengoed, Nelson and Gelligaer.
- Is Risca closer to Newport?
- Geographically yes, but Risca sits in Caerphilly County Borough and is its own hub here, covering Crosskeys, Pontymister and Cwmcarn.
- Is Treharris covered from Merthyr?
- Treharris is its own hub covering the Taff Bargoed valley, Quakers Yard, Edwardsville and Bedlinog.
- Can a terrace be treated on its own?
- Yes. The adjoining properties are considered because bed bugs move through shared voids, and neighbours can be checked with their agreement.
Request treatment in Central Valleys
Send us your postcode, property type and what you have found. We will confirm whether we can help and what the treatment would involve.
Enquiries: enquiries@bedbugheatexpertsuk.co.uk · 01727 601007