Covering Welwyn Garden City and nearby
Homes, businesses and public buildings throughout the AL7 and AL8 postcode districts can arrange drive unit replacement with us. We are the contracting party and organise every visit; the engineer, who works under our management, travels in to Welwyn Garden City for the job rather than working from premises in town.
Supermarkets and larger stores in and around Welwyn Garden City often trade long hours, so work on their entrances is usually planned for early mornings or late evenings. Where a store has more than one entrance, keeping one in use while the other is worked on is part of the plan.
Nearby towns we also list for drive unit replacement (straight-line distance): Hatfield (2.8 miles), Hertford (5.5 miles), St Albans (6.5 miles), Harpenden (6.5 miles), Stevenage (6.9 miles), Potters Bar (7.6 miles).
What to think about for drive unit replacement in Welwyn Garden City
- Business parks and office blocks in Welwyn Garden City with several identical doors can replace operators in phases, keeping at least one entrance open at all times.
- Battery backup is easier to add with a new drive unit. It lets the door open or close safely in a power cut, which matters most on escape routes.
- If the door is on an escape route, the new drive unit must be set up to open, break out or be openable by hand, as the building's fire strategy requires.
- Heavy glass leaves need an operator rated for their weight. The survey records the size and glass type of each leaf so the right drive unit is specified.
- Check the power supply. A dedicated fused spur and isolator near the door is usually needed, and older installations sometimes need electrical work before the new operator goes in.
Drive unit replacement in Welwyn Garden City: guide prices
The site survey is free, including the measured drawing and a fixed, itemised written quote. Guide price: typically £1,995 to £3,995 ex VAT.
| Item | Guide price | Notes |
|---|---|---|
| New drive unit on an existing automatic sliding door | £1,995 – £3,995 | existing leaves kept, installed, ex VAT |
| New operator on an existing automatic swing door | £1,795 – £3,995 | installed, ex VAT |
| Sensors replaced at the same time | £195 – £495 | per sensor, ex VAT |
Standards and rules in England
Standards are not retrospective, so an older door does not become unlawful when a standard is updated; a site-specific risk assessment shows whether any upgrades are sensible. BS EN 16005 is the current standard for the safety in use of powered pedestrian doors, and BS 7036-0:2014 is the British code of practice for risk assessment and risk reduction used alongside it. Standards are not law in themselves, but they are the recognised benchmark for showing an automatic door is safe to use, and we set up, test and document doors with reference to them.
Whoever motorises a manual door, or builds an automatic door from separate parts, may take on the manufacturer’s legal duties for the finished door: a risk assessment, a technical file kept available for the authorities, a Declaration of Conformity, the conformity marking and instructions. You receive the Declaration of Conformity and the instructions at handover. In Great Britain a new or converted powered door must meet the Supply of Machinery (Safety) Regulations 2008 before it is first used, and can carry the UKCA or the CE marking.
How it works
- Send photos and the address. A few pictures of the door from both sides, the address in Welwyn Garden City and a note of who uses the entrance help us understand the job before anyone visits the site.
- No-cost survey on site. We arrange a survey at a time that suits the building. The engineer records measurements, fixings and power, plus any constraints such as listed status, opening hours or access for deliveries.
- Itemised quote to approve. We price every element of the work on drive unit replacement separately in a written quote that you can check, share and approve. Lead time and payment stages are stated, and nothing is ordered until you accept.
- Fit, test and hand over. On the agreed dates the engineer installs the equipment, commissions the operator and tests each safety function. You get a demonstration, the test record and any conformity paperwork that applies to the work.
Tired of repeat breakdowns at your entrance in Welwyn Garden City? Ask us to compare a new operator with a new door, so you can choose with both prices in front of you.
Drive unit replacement in Welwyn Garden City: questions
Will you remove the old operator from our premises in Welwyn Garden City?
Yes. The old drive unit, sensors and any other replaced parts are taken away as part of the job, and the work area is left clean. Disposal is included in the fixed quote, so there is nothing extra to arrange or pay for afterwards.
How are prices worked out for drive unit replacement in Welwyn Garden City?
Our guide is £1,995 to £3,995 excluding VAT (per door), the same guide prices we use across the UK. The free site survey in Welwyn Garden City confirms the price as a fixed, itemised written quote, and the guide price tool gives you a range before anyone visits.
Can you fit a new operator to a door another company installed in Welwyn Garden City?
Yes. We replace drive units on doors whoever fitted them. The survey identifies the existing header, leaves and track, and adapter plates usually let a new drive unit from one of the major European operator brands fit without changing the frame.
What if the frame of our door in Welwyn Garden City is not worth keeping?
Then we will tell you. Damaged or corroded frames, glass that is not safety glass, or an opening that is too narrow for the people using it are all reasons to choose a new door instead. We can quote both options so you can compare them side by side.
Is there a warranty on drive unit replacement?
Yes. The warranty terms for the equipment and the installation are set out in your written quote, so you can see exactly what is covered before you accept. Keeping the door serviced at the recommended intervals helps keep it in good order, and the quote explains any conditions that apply to the warranty.
Do you service doors in Welwyn Garden City after installing them?
Yes. We recommend a trained engineer checks the safety functions at least once a year, with service intervals set by the manufacturer's instructions and how heavily the door is used; busy doors are often serviced more often. Servicing can follow on from the installation, with the price agreed in writing and a record left after every visit.
Which building regulations apply to a new automatic entrance in Welwyn Garden City?
In England the guidance is Approved Document M (Volume 2) for access, Approved Document B for fire safety and escape routes, and Approved Document K for glazing and powered doors. A new entrance can count as building work, so building control should be involved before it is ordered.