Fan House at Hetty Shaft is a Grade II* listed building in the Rhondda Cynon Taf local planning authority area, Wales. First listed on 3 August 1984. Fan house.

Fan House at Hetty Shaft

WRENN ID
iron-parapet-lark
Grade
II*
Local Planning Authority
Rhondda Cynon Taf
Constituency
Pontypridd MP: Alex Davies-Jones (Lab)
Country
Wales
Date first listed
3 August 1984
Type
Fan house
Address
Fan House at Hetty Shaft, Hopkinstown, Pontypridd, Rhondda Cynon Taff
OS grid reference
ST 054 909
Coordinates
51.60906, -3.3668
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The Fan House at Hetty Shaft is a single-storey structure built from snecked rock-faced stone. All openings are currently blocked and feature brick jambs with concrete sills and lintels. The building has a flat roof made of steel sheets. On the west side, there is a wide central doorway accessed by stone steps with concrete treads, flanked by windows. To the left of the doorway is a cylindrical fan casing, followed by a curved brick flue with a concrete roof. This flue contains steel trunking that is used to blow air into the shaft rather than draw it out. The east wall has three windows and a tall evasee at the north end, which includes two pairs of cover plates. The south wall features a doorway on the right with external steel steps and two windows. The building was inaccessible at the time of inspection.

Local climate

Fan House at Hetty Shaft sits in a wetter-than-average part of the UK, with an average of 1,150 mm of rain a year. This makes it wetter than 89% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 88% of listed buildings.

It experiences an average of 33 freeze-thaw cycles a year, fewer than 57% of listed buildings. Of these, 13 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • No sale records on file
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  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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  6. Bethany Baptist Church Grade II 1.1 km
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