Heating, plumbing and air conditioning firms to acquire in Cardiff
Updated 9 November 2026
Looking to acquire a heating, plumbing or air conditioning firm in Cardiff? Firmbase ranks 67 heating, plumbing and air conditioning firms using public company information to help buyers prioritise firms for research and potential outreach. The Approach Score ranks firms using public signals including director age and tenure, ownership, business scale, financial strength and recent changes. These firms are not listed for sale, and the ranking does not indicate that an owner is considering a sale.
The median firm has 8 staff and has been in business for 13 years. Looking beyond Cardiff? Explore the full Wales list of heating, plumbing and air conditioning firms.
67
Firms
UK 4,196
31%
Every director 55+
UK 19%
34%
Held 75%+ by one person
UK 31%
13
Median years in business
UK 14
8
Median headcount
UK 8
£500k to £1m
Median turnover band
UK £500k to £1m · includes our estimates
The first 25 firms, in Approach Score order
| Rank | Firm | Approach Score | The facts behind the score |
|---|---|---|---|
| 1 | J.D. Heating and Plumbing and Mechanical Services Cardiff, South Glamorgan | Approach Score 85/100 |
More about this firm
Company no. 03530987 · Companies House |
| 2 | Geoff Tremblett Plumbing & Heating Brynsadler, Pontyclun, Rhondda Cynon Taff | Approach Score 84/100 |
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Company no. 08957375 · Companies House |
| 3 | Control and Service Technology Bridgend, MID Glamorgan | Approach Score 83/100 |
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Company no. 04707210 · Companies House |
| 4 | Phillips Price Services Newport | Approach Score 83/100 |
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Company no. 07124442 · Companies House |
| 5 | RS Energy Pontypridd, MID Glamorgan A director sits on 4 or more companies | Approach Score 76/100 |
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Company no. 08588352 · Companies House |
| 6 | PRO-GAS South Wales Cardiff | Approach Score 75/100 |
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Company no. 09559987 · Companies House |
| 7 | Decorative Heating Cardiff A director sits on 4 or more companies | Approach Score 75/100 |
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Company no. 04804011 · Companies House |
| 8 | RED Dragon AIR Conditioning Pyle, Bridgend | Approach Score 73/100 | We hold older figures than Companies House
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Company no. 06360133 · Companies House |
| 9 | Pipework Mechanics Pyle, MID Glamorgan | Approach Score 72/100 |
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Company no. 01793654 · Companies House |
| 10 | Solvit Cardiff, South Glamorgan | Approach Score 72/100 | We hold older figures than Companies House
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Company no. 04765784 · Companies House |
| 11 | J.T. Plumbing and Heating Services Maesteg | Approach Score 71/100 | We hold older figures than Companies House
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Company no. 04645003 · Companies House |
| 12 | Borley Associates Cardiff, S Glam A director sits on 4 or more companies | Approach Score 69/100 |
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Company no. 12884112 · Companies House |
| 13 | Draintech Bridgend | Approach Score 69/100 | We hold older figures than Companies House
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Company no. 06358971 · Companies House |
| 14 | Fylde Maintenance Services Cardiff, S Glam A director sits on 4 or more companies | Approach Score 69/100 | We hold older figures than Companies House
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Company no. 05037189 · Companies House |
| 15 | JSH Plumbing & Heating Barry | Approach Score 69/100 |
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Company no. 10925728 · Companies House |
| 16 | AMS Heating & Plumbing Blackwood, Gwent | Approach Score 68/100 |
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Company no. 07334310 · Companies House |
| 17 | Graft Heating and Building Services Merthyr Tydfil, MID Glamorgan A director sits on 4 or more companies | Approach Score 67/100 |
More about this firm
Company no. 06653404 · Companies House |
| 18 | K S Barry (plumbing & Heating) South Glamorgan | Approach Score 66/100 | We hold older figures than Companies House
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Company no. 03905271 · Companies House |
| 19 | FP Hurley Bridgend A director sits on 4 or more companies | Approach Score 66/100 | We hold older figures than Companies House
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Company no. 00463912 · Companies House |
| 20 | H20 Plumbing 'N' Heating Cardiff | Approach Score 65/100 |
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Company no. 11352549 · Companies House |
| 21 | Narbeths Mechanical Bridgend, MID Glamorgan | Approach Score 65/100 |
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Company no. 03598168 · Companies House |
| 22 | OIL Facilities Cowbridge, Vale of Glam | Approach Score 63/100 | We hold older figures than Companies House
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Company no. 06360712 · Companies House |
| 23 | Wootton Cardiff A director sits on 4 or more companies | Approach Score 63/100 |
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Company no. 04085160 · Companies House |
| 24 | RSP Plumbing and Heating Pontyclun | Approach Score 62/100 |
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Company no. 09276285 · Companies House |
| 25 | C. P. General Services Caerphilly | Approach Score 62/100 | We hold older figures than Companies House
More about this firm
Company no. 04312288 · Companies House |
42 more firms are in the list, in Approach Score order.
You're seeing the first 25. Buy all 67 for £799 + VAT, with the facts behind each score, director names, shareholders and financials.
Buy the list of all 67 firms, with director names, ages and shareholders
Each row comes with the facts behind its score, financials with dates and contact details.
What's in the file
One row per firm, in Approach Score order, as Excel + CSV.
It holds the facts behind each score, points for each part of the score, financials with dates, publicly available contact details, where identified, director names and named shareholders.
Some people with significant control appear as Other individual, with no further detail. Director email lookups are not included.
How this list is filtered
- 5 or more staff, from filed headcount or our estimate where none is filed.
- Registered office in Cardiff.
How this list is built
The Approach Score ranks firms mainly on public Companies House information about owner tenure and age, ownership, size, financial strength and recent register changes.
Firms with higher scores appear first in each list.
Use the ranking to order research, then check each business directly.
What it does not mean
No firm here is for sale, and the score says nothing about any owner's plans.
At least 95% of the firms where we hold directors had them checked in or after November 2026.
What we do not cover
Regulatory information is not included in this list. Buyers should check the relevant register as part of their due diligence. For gas work, check businesses and engineers on the Gas Safe Register. For relevant refrigeration and air conditioning work, verify company F-gas certification with its issuing body, using registers such as REFCOM Active Certificates.
Why age bands but no people's names
Age bands come from the month and year of birth on Companies House. This page shows no exact ages and no people's names. Both come with the purchased list. The band edges from 45 to 65 are the ages where the score changes. A row shows no age bands when a director's surname is in the firm's name, its group's name or its website. Those directors' ages still count towards the score.
Is this your firm?
You can ask us to take it off every acquisition page, and out of every list we sell after that. Give us your name and work email, and we send you a link to confirm. If your email address is on the firm's own website domain, the firm comes off once you confirm. If it is not, a person reviews your request first. A list already sold stays with its buyer.
To have personal data erased, see our privacy policy.
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The standard Firmbase list
Buy the list of all 67 firms, with director names, ages and shareholders
Each row comes with the facts behind its score, financials with dates and contact details.