Halo Electrical Ltd | Envirovent Approved Contractor

Welcome to Halo Electrical Installations Ltd

Your local domestic electrical firm who are happy to offer an unrivalled electrical service. Whether you need a full rewire, extract fan installed or just need help with a faulty appliance, we are here for you.

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About Us

A few words about us

Let us introduce ourselves

We are a small and established electrical contracting firm based in Tredegar South Wales, that has been building a solid reputation and client base, built on quality workmanship and customer satisfaction, ultimately keeping our customers families safe, protecting them from fire and electric shock.

As well as covering South Wales and the local area, we have customers in Hereford, Bristol, Bath and Weston Super Mare.

By using our services, you have the piece of mind that the work will be carried out by a fully qualified electrician, to the highest standards, always keeping you informed every step of the way.

Any electrical installation work carried out by us will be followed up by an Electrical Installation Certificate or Minor Work Certificate that confirms that the work meets BS 7671 and where applicable a Building Regulations Compliance Certificate that confirms that the work meets the Building Regulations


Halo Electrical Installations ltd are proud to have been in working partnership with Envirovent for over 7 years. Envirovent are the UK’s leading manufacturer and supplier of energy efficient and sustainable ventilation products, and as an approved contractor we can survey your property to evaluate your exact needs and ultimately offer a permanent solution to poor indoor air quality and eliminate condensation, mould and damp issues.

Most people don’t even give it a second thought, but the air that we breathe inside our homes is important to our health and provides a comfortable living environment.

It may come as a bit of a revelation but through our daily routines of washing, bathing, cooking etc, we create a lot of moisture – in fact the average family can create a whooping 112 pints of the stuff per week. And, as we spruce up our homes by furnishing and cleaning them we also introduce a concoction of other contaminants into the air inside the home. These include chemicals from cleaning products and formaldehydes from carpets and furniture.

What’s more, as we strive to save money and energy by improving our homes such as installing double glazing, cavity, external wall and loft insulation we prevent ‘natural ventilation’ which means that the moisture we produce along with the stale, polluted air has no means of escape. This causes condensation on windows, which left untreated will lead to black mould and musty odours.

What is Positive Input Ventilation?

Positive Input Ventilation (PIV) is the name given to a ventilation system or unit which transforms a stagnant and stale atmosphere into a fresh, healthy and condensation free environment by supplying a constant supply of fresh filtered air to homes with a loft space.

We understand that every home has its unique requirements. The can be dependent upon the material fabric of the building, the number of people living in the property and their lifestyle.

EnviroVent’s range of Mr Venty® units have been designed for every make, size and shape of house, flat, bungalow or apartment.

How does Positive Input Ventilation work?

The Mr Venty® range of condensation control units work by delivering clean fresh, filtered air into the home from either the landing in a house or a central hallway in a flat. The unit gently ventilates the property using a technique called Positive Input Ventilation (PIV).

This method dilutes high levels of humidity so that condensation and mould cannot form, whilst also diluting harmful household contaminants, thus creating a healthy all year round living environment.

Furthermore, by reducing the levels of humidity inside the home the household dust mite population can no longer thrive – an added benefit for asthma and allergy sufferers who could see a significant improvement to their symptoms.

Features and benefits of Positive Input Ventilation

    • Reduces condensation dampness
    • Quiet operation
    • Eliminates mould
    • Stops streaming windows
    • Removes musty odours
    • Can reduce heating costs
    • Benefits asthma sufferers
    • BBA approved
    • Superior long life filters
    • Reduces radon levels
    • Low running costs
    • 5 year guarantee

Periodic Inspection

All electrical installations deteriorate with age and use. They should therefore be inspected and tested at regular intervals to check whether they are in a satisfactory condition for continued use. Such safety checks are commonly referred to as ‘periodic inspection and testing’. 

Once completed you will be issued with an Electrical Condition Report (EICR).

A periodic inspection will:

  • Reveal if any of your electrical circuits or equipment are overloaded.
  • Find any potential electric shock risks and fire hazards.
  • Identify any defective electrical work.
  • Highlight any lack of earthing or bonding.

Tests are also carried out on wiring and fixed electrical equipment to check that they are safe. A schedule of circuits is also provided, which is invaluable for a property.
How often is a periodic inspection required?

Your electrics should be inspected and tested every:

  • 10 years for an owner-occupied home.
  • 5 years for a rented home.
  • 3 years for a caravan
  • 1 year for a swimming pool.

Other times when a periodic inspection should be carried out are:

  • When a property is being prepared for letting.
  • Before selling a property or buying a previously-occupied property.

Periodic inspection and testing should be carried out only by electrically competent persons, such as registered electricians. We will check the condition of the electrics against the UK standard for the safety of electrical installations, BS 7671 – Requirements for Electrical Installations (IET Wiring Regulations).
The inspection takes into account all the relevant circumstances and checks on:

  • The adequacy of earthing and bonding.
  • The suitability of the switchgear and controlgear. For example, an old fusebox with a wooden back, cast-iron switches, or a mixture of both will need replacing.
  • The serviceability of switches, sockets and lighting fittings. Items that  may need replacing include: older round-pin sockets, round light switches, cables with fabric coating hanging from ceiling roses to light fittings, black switches and sockets mounted in skirting boards.
  • The type of wiring system and its condition. For example, cables coated in black rubber were phased out in the 1960s. Likewise cables coated in lead or fabric are even older and may well need replacing (modern cables use longer-lasting pvc insulation).
  • Sockets that may be used to supply portable electrical equipment for use outdoors, making sure they are protected by a suitable residual current device (RCD).
  • The presence of adequate identification and notices.
  • The extent of any wear and tear, damage or other deterioration.
  • Any changes in the use of the premises that have led to, or may lead to, unsafe conditions.

The competent person will then issue an Electrical Installation Condition Report detailing any observed damage, deterioration, defects, dangerous conditions and any non-compliances with the present-day safety standard that might give rise to danger.

If anything dangerous or potentially dangerous is found, the overall condition of the electrical installation will be declared to be ‘unsatisfactory’, meaning that remedial action is required without delay to remove the risks to those in the premises.

Heat Recovery Ventilation

Recovery Ventilation


What is Heat Recovery Ventilation?

Mechanical Ventilation with Heat Recovery (MVHR) meets System Four of the Building Regulations Part F: Ventilation. This method of ventilation is becoming increasingly popular as we continue to make our homes more energy efficient and airtight.

Heat Recovery ventilation provides continuous, all year round ventilation to create healthy and condensation-free environments by maintaining stable humidity levels.

How does Heat Recovery Ventilation work?

There are two different types of heat recovery system, Whole House Mechanical Ventilation with Heat Recovery (MVHR) and Single Room Heat Recovery (SRHR).

Whole House Heat Recovery is a centralised system, normally located in the loft space of a house or a utility room in an apartment. It works using the principles of both supply and extract ventilation. Warm and moisture-laden air is extracted from the bathroom, kitchen, WC and utility room of a property which is drawn into the main system and passes over a heat exchange cell before being ducted outside to atmosphere.

At the same time, fresh air is drawn from outside into the system, collecting up to 90% of the heat from the extracted air as it passes over the heat exchange cell. This fresh, filtered and tempered air is then supplied into the living room areas of the home, the bedrooms, living and dining areas. Halo Electrical Installation Ltd, offers a range of Heat Recovery Ventilation systems, suitable for small and large properties. We also offer a design service to accurately calculate airflow rates and duct runs for your installation to fully comply with Building Regulations and legislation.

Single Room Heat Recovery is a through-the-wall ventilation unit designed for a one-room installation, such as a kitchen or bathroom. It works in the same way as the whole house method, by extracting the moisture-laden air and supplying the fresh, tempered air that has been warmed by the heat exchange cell. This method of ventilation is ideal for replacing old and inefficient extract fans, by providing a much more energy-efficient alternative.

Features and benefits of Heat Recovery Ventilation

  • Improves indoor air quality – providing clean fresh air
  • Eliminates condensation which causes mould and damp
  • Saves energy costs – the heat exchange cell can recover up to 75% of the heat that would normally be extracted out to atmosphere
  • 5 year renewable warranty
  • Fits into nearly any wall depth and orientation

Get in touch

Tel: 07769358493

If you are interested in any of our products or services, please call one of the numbers above, alternately fill in the form below to send us an email.

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