Heating, plumbing and air conditioning firms to acquire in Southampton

Name: Heating, plumbing and air conditioning firms to acquire in Southampton
Creator: Firmbase
License: https://firmbase.co/terms

Updated 9 November 2026

Looking to acquire a heating, plumbing or air conditioning firm in Southampton? Firmbase ranks 52 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 9 staff and has been in business for 14 years. Looking beyond Southampton? Explore the full South East list of heating, plumbing and air conditioning firms.

Firms

UK 4,196

18%

Every director 55+

UK 19%

35%

Held 75%+ by one person

UK 31%

Median years in business

UK 14

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	First Call Heating Eastleigh, Hampshire	Approach Score 81/100	Director aged 55-59 · in post since 2004 1 individual holds 75%+ · independent More about this firm 7 staff · turnover est. £403k Net assets £102k (Apr 2025) Company no. 05301416 · Companies House
2	RFW Southampton	Approach Score 79/100	Director aged 55-59 · in post since 2004 2 individuals hold 50%+ · independent More about this firm 9 staff · turnover est. £775k Net assets £124k (Mar 2025) Company no. 05212648 · Companies House rfwheating.co.uk
3	K H Refrigeration and AIR Conditioning Andover	Approach Score 77/100	1 director aged 60-64, 1 aged under 45 · longest in post since 2013 1 individual holds 75%+ · independent More about this firm 6 staff · turnover est. £647k Net assets £3k (Mar 2026) Company no. 08536627 · Companies House
4	Climate GAS Southampton, Northamptonshire	Approach Score 77/100	1 director aged 60-64, 1 aged under 45 · longest in post since 2012 2 individuals hold 75%+ · independent More about this firm 9 staff · turnover est. £634k Net assets £139k (Sep 2025) Company no. 08219978 · Companies House climategas.co.uk
5	Premise Property Maintenance Southampton A director sits on 4 or more companies	Approach Score 76/100	1 director aged 70 or over, 1 aged 55-59 · longest in post since 2006 2 individuals hold 50%+ · independent More about this firm 5 staff · turnover est. £418k Net assets £21k (Apr 2026) Company no. 05980533 · Companies House premisepm.co.uk
6	Drummond Heating Romsey, Hampshire	Approach Score 74/100	Longest in post since 2011 2 individuals hold 50%+ · independent More about this firm 18 staff · turnover est. £1.9m Net assets £223k (Mar 2025) Director resigned Aug 2026 Company no. 07556814 · Companies House drummondheating.co.uk
7	AIR Improve Winchester, Hampshire	Approach Score 74/100	3 directors aged 70 or over, 1 aged 50-54, 1 aged under 45 · longest in post since 1998 Independent More about this firm 18 staff · turnover est. £2.4m Net assets £915k (Dec 2024) Company no. 03686971 · Companies House airimprove.ltd.uk
8	Design Heat Winchester Hants, Hampshire	Approach Score 71/100	1 director aged 65-69, 1 aged under 45 · longest in post since 1998 1 individual holds 75%+ · independent More about this firm 10 staff · turnover est. £660k Net assets £218k (Jun 2025) Company no. 01112141 · Companies House designheat.co.uk
9	Heatworks Southampton, Hampshire	Approach Score 67/100	1 director aged 60-64, 1 aged 45-49 · longest in post since 2011 1 individual holds 75%+ · independent More about this firm 5 staff · turnover est. £504k PSC register changed Oct 2026 Company no. 07877358 · Companies House heatworksuk.com
10	D.S.R. Mechanical Services Fareham, Hampshire	Approach Score 67/100	We hold older figures than Companies House 1 director aged 65-69, 1 aged under 45 · longest in post since 2003 2 individuals hold 50%+ · independent More about this firm 9 staff · turnover est. £1.4m Net assets £374k · newer accounts made up to Jan 2026 PSC register changed Dec 2024 Company no. 04641636 · Companies House dsrmech.co.uk
11	Economy Heating Services Eastleigh, Hampshire	Approach Score 67/100	We hold older figures than Companies House Director aged 55-59 · in post since 2004 1 individual holds 75%+ · independent More about this firm 5 staff · turnover est. £1m Net assets £16k · newer accounts made up to Mar 2025 Company no. 04092942 · Companies House economyservices.co.uk
12	AES Limited Romsey	Approach Score 66/100	1 director aged 65-69, 1 aged 60-64, 1 aged 45-49, 1 aged under 45 · longest in post since 2016 Independent More about this firm 11 staff · turnover est. £2.4m Net assets £882k (Jul 2025) Company no. 02421733 · Companies House aeslimited.co.uk
13	S J King Plumbing and Heating Winchester, Hampshire	Approach Score 64/100	We hold older figures than Companies House Longest in post since 2003 Independent More about this firm 11 staff · turnover est. £877k Net assets £79k · newer accounts made up to Mar 2026 Company no. 04685428 · Companies House sjkingplumbingandheating.co.uk
14	Solwat Green Energy Lymington, Hampshire	Approach Score 63/100	Director aged 60-64 · in post since 2020 Independent More about this firm 7 staff · turnover est. £363k Net assets £13k (Aug 2025) Company no. 12835745 · Companies House
15	Roost Heating Winchester, Hampshire	Approach Score 63/100	Director aged 45-49 · in post since 2017 1 individual holds 75%+ · held via a trust or firm · independent More about this firm 10 staff · turnover est. £610k Net assets £70k (Feb 2025) Company no. 10594775 · Companies House roostheating.co.uk
16	OUR MEP Fareham	Approach Score 62/100	1 director aged 55-59, 1 aged under 45 · longest in post since 2022 2 individuals hold 50%+ · independent More about this firm 8 staff · turnover est. £2.1m Net assets £195k (Dec 2025) Company no. 13180154 · Companies House ourmepco.co.uk
17	Elite Air Handling Units Southampton	Approach Score 60/100	1 director aged 60-64, 1 aged 45-49 · longest in post since 2020 Independent More about this firm 5 staff · turnover est. £179k Net assets £80k (Aug 2025) Company no. 12798429 · Companies House eliteairhandlingunitspecialistsltd.co.uk
18	VME Services Southampton, Hampshire	Approach Score 59/100	1 director aged 45-49, 1 aged under 45 · longest in post since 2009 1 individual holds 75%+ · independent More about this firm 19 staff · turnover est. £2.5m Net assets £575k (Mar 2026) Charge satisfied Mar 2025 Company no. 03112316 · Companies House vmeservices.co.uk/about
19	Maximum Climate Control Denmead, Hampshire A director sits on 4 or more companies	Approach Score 59/100	We hold older figures than Companies House 2 directors aged 60-64 · longest in post since 1997 Held via a trust or firm · corporate owner More about this firm 18 staff · turnover est. £1.5m Net assets £9k · newer accounts made up to Oct 2025 PSC register changed Nov 2025 Company no. 03061621 · Companies House maximumair.co.uk
20	Tetra Southampton	Approach Score 59/100	2 directors aged under 45 · longest in post since 2021 1 individual holds 75%+ · independent More about this firm 6 staff · turnover est. £279k Net assets £29k (Jul 2025) PSC register changed Jul 2026 Company no. 13519365 · Companies House
21	Stephen Harris GAS Plumbing & Heating NEW Milton, Dorset A director sits on 4 or more companies	Approach Score 58/100	2 directors aged 55-59 · longest in post since 2025 Corporate owner More about this firm 22 staff · turnover est. £1.2m Net assets £102k (Mar 2025) Director resigned Mar 2025 · PSC register changed Mar 2025 Company no. 07968233 · Companies House stephenharris-plumbing.com
22	M B Plumbing & Heating Eastleigh, Hampshire	Approach Score 58/100	1 director aged 55-59, 1 aged under 45 · longest in post since 2002 2 individuals hold 50%+ · independent More about this firm 5 staff · turnover est. £333k Net assets £22k (May 2026) Company no. 04468154 · Companies House mbplumbingheating.uk
23	D.j.harris(plumbing and Heating) Eastleigh, Hampshire	Approach Score 58/100	We hold older figures than Companies House 1 individual holds 75%+ · independent 7 staff · turnover est. £454k More about this firm Net assets £16k · newer accounts made up to Dec 2025 Company no. 00922838 · Companies House djharris.co.uk
24	VU Bathrooms Fareham	Approach Score 56/100	Director aged under 45 · in post since 2017 1 individual holds 75%+ · independent More about this firm 6 staff · turnover est. £705k Net assets £212k (Jul 2026) Company no. 10872156 · Companies House vubathrooms.co.uk
25	Crown Heating & Plumbing Southampton, Hampshire	Approach Score 56/100	1 director aged 50-54, 1 aged under 45 · longest in post since 2016 2 individuals hold 50%+ · independent More about this firm 5 staff · turnover est. £225k Net assets £60k (Nov 2025) Company no. 10490923 · Companies House crownheatingandplumbing.co.uk

27 more firms are in the list, in Approach Score order.

You're seeing the first 25. Buy all 52 for £799 + VAT, with the facts behind each score, director names, shareholders and financials.

Buy the list of all 52 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 Southampton.

See every filter on the UK list

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.

Read how the Approach Score works

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

Plumbing & Heating Companies in the UK