Mobile car radiator and cooling repair

Fix leaking radiators, hoses and thermostats on the driveway for car and van owners who can't drive to a garage.

Startup cost£2k to £8k
Monthly revenue£1.2k to £5k
Time needed15+ h/week
First incomeWeeks
  • £2k-8k
  • Part-time
  • Out and about

Estimates for a small start in the UK, not guarantees.

What it is

A mobile service that diagnoses and fixes cooling system faults at the customer's home or workplace: leaking radiators, split hoses, faulty thermostats, water pumps and coolant flushes.

Your first three steps

  1. Check your qualifications and experience, and decide which cooling jobs you can safely do at the roadside or on a driveway
  2. Set up a van with hand tools, a pressure tester, coolant and drip trays, and open a trade account with a local parts supplier
  3. Advertise on local Facebook groups and Google Business Profile, and tell local van owners and small firms you offer call-outs
Who pays

Car owners, small trades with vans, local businesses with work vehicles and drivers whose car has overheated.

How it makes money

Labour charged per job or by the hour, plus a markup on parts such as radiators, hoses and coolant. Call-out fees can cover travel time.

Skills that help
  • Vehicle mechanics and diagnosis
  • Safe handling of hot, pressurised cooling systems
  • Clear quotes and customer service
Watch out for
  • Public liability insurance, plus motor trade insurance that covers working on customers' vehicles (check with a broker)
  • Used coolant (antifreeze) and old radiators are waste, so check how to dispose of them legally, including whether you need waste carrier registration
  • Check whether councils or landlords restrict repair work on residential streets or in shared car parks
  • Hot, pressurised systems and working on driveways carry injury risks, so plan safe working practices
  • Work on a car's cooling system can affect warranties and the engine if done badly, so keep records and be clear about guarantees

Deep research report · UK

Everything you need to start: mobile car radiator and cooling repair

Researched with live web search for United Kingdom: real startup prices, the licences and rules, what others charge, a break-even example, how to find your first customers and a 30-day launch plan. With sources.

  • Startup costs with real prices
  • Licences, registration and rules
  • Pricing: what others charge
  • Break-even example
  • Finding your first customers
  • 30-day launch plan
  • Risks and how to reduce them
Ready in about 2 minutes · one-off payment, tax included

See a full sample report

Questions people ask

How much does it cost to start a mobile radiator repair business?

Startup costs are typically around £2,000 to £8,000, depending on your tools, equipment and insurance. Check with a broker about public liability and motor trade insurance that covers working on customers' vehicles.

How much can a mobile radiator repair business earn?

Monthly revenue is typically around £1,200 to £5,000, depending on how many jobs you take and what you charge. These are estimates, not guarantees, and parts and running costs will affect what you keep.

What rules should I check before repairing radiators on customers' driveways?

Used coolant (antifreeze) and old radiators are waste, so check how to dispose of them legally, including whether you need waste carrier registration. Also check whether councils or landlords restrict repair work on residential streets or in shared car parks.

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