J&S Heating are specialists in all electrical testing and commissioning, whether it is domestic, commercial, industrial.
We operate a customer service company, we try to work around your requirements, contact us for more information or a quote.
J&S Heating understands the current economic climate; we operate in an efficient way and are effective at what we do, this allows us to pass on to you directly all our savings.
We complete a large number of fixed wire tests a year and are experts in the field of electrical testing as such we can offer advice and support to you in the most cost effective way.
Full electrical testing on the supply and internal fixed wiring of your property / business to the latest regulations BS7671 2011 AMD 2 of the IEE wiring regulations.
This will include the distribution board all circuit breakers and associated RCBs, the complete earthing arrangement of the installation with all cables, switches, sockets and fixtures checked for soundness and compliance.
We can usually offer a very quick service if it is required with night time working if day time access is limited due to business requirements.
All of our electricians are BS7671 18th edition and City & Guilds 2391 and we only employ fully qualified British trained electricians and engineers.

Landlord Periodic Inspections

Domestic Periodic Inspections

Commercial Electrical Testing

These Are The Usual Electrical Tests Performed:

  • Visual inspection of the installation
  • Continuity of (cpc) & earth conductors
  • Continuity of the ring circuits
  • Polarity
  • Insulation resistance of conductors
  • Earth loop impedance test to determine the quality of your earthing
  • Testing of RCDs to check that they do trip at the correct time and current rating
  • Functional switching and Isolation, to insure the switches actually switch the live conductor and not the neutral

CALL US TODAY ON 01708 321321


J&S Heating employs a team of licensed electrical contractors across London dedicated to helping you with all electrical installations and repairs, no matter how big or small. We can fix anything from broken sockets to blown fuses and flickering lights.
Our registered electricians can also conduct PAT (portable appliance testing) and perform full electrical inspections to give you complete peace of mind at home.
J&S Heating enhances its customers’ productivity and profitability by reducing business and facility downtime as well as the cost of owning and operating facilities.
J&S Heating provides a full maintenance service, including regular inspection and testing services.

  • Periodic walk-through and visual inspection
  • Lamp replacement
  • Servicing and minor repairs / installation
  • Fire alarm testing
  • Emergency lighting testing
  • Electrical inspection and testing
Whether a new installation of full refurbishment J&S Heating installs all types of power and lighting
circuits including but not restricted to the following:
  • Additional Power and Lighting Points
  • Metering Alterations & Upgrades
  • Under Floor Heating Systems
  • 3 Phase Circuit Wiring
  • Under Floor Heating Systems
  • Creative Lighting Installations
  • Kitchen Upgrades & Improvements
  • Creative Lighting Installations
  • Fused Spurs
  • New & Upgraded Distribution Boards
  • Pre & Post Let Inspections
  • Wireless Fire Alarm Systems
  • Wireless Intruder Alarm Systems
  • Garden Lighting
  • Cooker Circuits
  • Shower Circuits