Loading Bay & Door Heater Servicing for Preston Warehouses in Winter

Loading bay door heaters in Preston take a beating that the rest of the warehouse never sees. Every time a shutter lifts, a wall of Lancashire air hits the dock. If the door heater, air curtain or radiant strip above that opening is dirty, in lockout or aimed at the roof, the bay goes cold in minutes — and the rest of the heating plant then runs flat out trying to recover.

This is not a generic warehouse heating guide. It is the winter job on the threshold: the heaters that live over docks at Walton Summit, Bamber Bridge, Leyland and Chorley.

Why loading bays lose heat first

A dock is a designed hole in the building. In winter that means:

• Repeated door cycles during the morning trunking rush
• Negative pressure if extract fans are running and make-up air is weak
• Drivers standing in the opening, not in the heated aisle

Warm air from the warehouse pours out at high level. Cold air slides in at floor level. A heater that worked “well enough” in November cannot hold a January dock if the burner is weak or the fan is full of dust.

What actually sits over a Preston loading bay

Sites mix kit. Typical winter-critical appliances:

• Gas-fired door heaters / air curtains that throw a stream across the opening
• Radiant strips or plaques aimed at the dock floor and the person working it
• Cabinet or unit heaters in the bay, too far back to fight the opening
• Electric air curtains that look busy and move cold air if the heat bank has failed

The wrong question is “do we have a heater?” The right question is “does it still cover the opening when the door is up?”

Winter servicing checklist for door and bay heaters

1. Stand in the opening. If you can feel a stream of heat at chest height, the unit may still be doing a job. If the heat is on the lintel and the floor is raw, aim and output are wrong.
2. Look at the unit, not just the thermostat. Error lights, sooted heat exchangers, noisy fans, damaged flues and crushed bird mesh are winter failures waiting to happen.
3. Time the door. If docks stand open for picking rather than for a vehicle, a door heater alone will never win.
4. Check interlocks. Some air curtains should start with the door. If the door is up and the heater is quiet, the interlock or time clock is the fault.

AAC Gas service gas-fired door heaters, air curtains and the radiant or unit heaters that back them up. We are Gas Safe registered (562186), based in Higher Walton, and used to working around live docks.

Radiant door heat vs blown air — a winter note

Blown-air door heaters need a working fan and a clean heat exchanger. In a freeze they heat air that immediately leaves. Radiant heat at the dock warms people and the floor even while the door is open, provided the heater is clean, correctly aimed, and not in lockout.

FAQ: loading bay heaters in Preston

How often should loading bay heaters be serviced?

At least annually, and always before the heating season. Dock units work harder than warehouse heaters and ingest more dirt from the yard.

The warehouse is warm but the bay is freezing. Is that normal?

Some difference is normal with the door open. A raw dock with a dead or misaimed heater is not. Service the bay kit rather than turning the whole warehouse up.

Can AAC Gas work around live loading operations?

Yes. We plan visits around trunking windows where we can. For a failed dock in a freeze, call the 24/7 line.

Who do we call?

AAC Gas: 01772 382971. 24/7 emergency: 07592 333187. Email: info@aacgas.co.uk. Higher Walton, Preston. Gas Safe 562186.

Get the docks ready before the next cold snap

If your Preston warehouse heating “is fine except the bays,” the bays are the job. Book loading bay and door heater servicing now, not after the leveller ices over.

Call 01772 382971 or 07592 333187 (24/7 emergency), or email info@aacgas.co.uk.

Covering Preston, Walton Summit, Bamber Bridge, Leyland, Chorley and Lancashire warehouse estates.