Frost protection heating in Preston commercial buildings is what you need when the site is empty — not when it is full. Offices that close Friday at 5. Units on Walton Summit that sit dark until Monday. Warehouses that run a skeleton weekend crew in one aisle and nothing in the rest. A Lancashire cold snap does not wait for occupancy.
This is not a “turn the heating up” post. It is how to keep fabric, pipework and plant alive when nobody is in the building to notice a 2°C air temperature.
Three different empty states get mixed up:
The frost plan is different for each. A time clock that works for night setback will not protect a vacant unit in Bamber Bridge through January.
A frost thermostat (often set around 5°C) should bring heating on regardless of the time clock.
If it is wired after the clock, or sat in a warm cupboard, it is theatre.
Background heat holds a higher floor — 10–12°C in offices, sometimes less in a warehouse — so recovery is realistic and pipework in perimeter rooms does not sit on the edge of freezing.
Trace heating on vulnerable pipe runs is a supplement, not a substitute for a building frost strategy.
For gas-fired plant, heaters or boilers must be allowed to fire when the frost stat calls. An isolator left off “to save gas over Christmas” is how Preston units greet January with split WC pipes and a flooded ceiling.
Insurers and landlords ask whether frost protection was in place. “We turned it off for the weekend” is not a good answer.
AAC Gas (Gas Safe 562186, Higher Walton) set up and repair commercial frost protection on boilers, unit heaters and warehouse plant. If the empty building is an industrial process site, sister company SMR Gas Maintenance can advise.
Often around 5°C air temperature in the space or plant room it protects — but it must be in the right place and able to start the heat. Ask the engineer to confirm against your system.
Only as a planned drain-down with someone who understands the system, including hidden runs and water heaters. Turning boilers off and hoping is not a drain-down.
Yes, if there is water pipework, sprinklers, or plant that can freeze. Stock does not keep a portal frame above zero.
AAC Gas 24/7: 07592 333187. Office: 01772 382971. Email: info@aacgas.co.uk.
If your Preston site goes dark on Friday, decide now how frost protection will run — and test it — before the next cold snap.
Call 01772 382971 or 07592 333187 (24/7 emergency), or email info@aacgas.co.uk.
Covering Preston, Higher Walton, Walton Summit, Bamber Bridge, Leyland, Chorley and Lancashire commercial units.
