Our Pricing MARZ Heating Service We handle all aspects of non-commercial and residential gas, heating, and plumbing services. If you have any additional needs, feel free to contact us. We're here to assist you. All prices exclude VAT. Service Call (includes first hour) £95 Gas Safety Inspection £95 Gas Safety Inspection + Boiler Maintenance £145 Boiler Maintenance £100 Hourly Labor Rate £95