Range from the cheapest installation of a carbon monoxide alarm £44 (JSC Electrical based in HP9) to the dearest installation of a carbon monoxide alarm £134 (AJP Electrics Ltd based in HP5).
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 HP7 by posting a job with HaMuch and we will send it to electricians in HP7.