Range from the cheapest installation of a carbon monoxide alarm £40 (May Electrical based in S20) to the dearest installation of a carbon monoxide alarm £114 (Robix Electrix based in S60).
Comparing electricians estimates for fitting a carbon monoxide detector gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to install carbon monoxide alarm in S20 by posting a job with HaMuch and we will send it to electricians in S20.