Welcome to Rainbow-Fix Ltd

Roman beside vehicle

We are experienced Heating Engineers, Plumbers and Fitters operating from a base in Marlow and surrounding areas.

We can help you install and setup a brand new system, replace a boiler or just fit some new radiators. We also power flush central heating systems which is removing all iron oxide and other sludge from your radiators and pipework.

We are registered on the Gas Safe Register, have full public liability insurance and are members of the FSB. If you have a project, small job or just need someone qualified to service your boiler - then give us a call on 01628 891260(evenings) or 07877 373 229 (daytime)



Safety First Always.

Gas Safe Registered Member.


We are registered with the Gas Safe. Only Gas safe engineers can work on gas appliances, gas boilers and gas installations. The old CORGI system was replaced with Gas Safe Register a few years ago. Always check your engineer is on the Gas Safe Register.
More on GasSafeRegister.

Member Of Checkatrade

we are there when you NEED IT.


Checkatrade runs strict background checks on tradespeople before they can become members. Once they join, members agree to have feedback from their customers put online for all to see. No other directory of tradespeople uses this model. The background checks and public feedback ensure that only reliable and trusted tradespeople get work through Checkatrade. They make sure that you can find someone outstanding to get the job done.
Click for Checkatrade website.

Member Of The FSB

high end proffesional work


The Federation of Small Businesses (FSB) is a not-for-profit organisation that exists to protect and promote the FSB and small businesses. With more than 200,000 members, the FSB is a powerful lobbying organisation representing small firms to national, local and devolved Government. The FSB also offers its members a comprehensive package of benefits, including a 24 hour legal advice line and free business banking.


New boiler and hot water cylinder fitted.
"Roman is very conscientious and clearly knows what he is doing. We did not feel pressured and found him to be very honest, hardworking and reliable."

Customer in Marlow. Checkatrade 10/10

Installed pressure limiting valve.
"Roman was extremely polite and helpful and managed to solve my leaking pipe problem where others had failed. He arrived when he said and was very efficient in his work. I have no hesitation in recommending his services."

Customer in Henley On Thames Checkatrade 10/10