Deep clean and odour treatment across Lancashire
If an indoor unit in Preston drips from the front, a blocked drain tray is often the cause, which a deep clean clears. Homes near busy roads and kitchens around Preston tend to need a deep clean more often. Damp North West weather makes the dehumidifying mode of a modern split system genuinely useful for much of the year.
Prices in Lancashire
Budget around £140–£235 per indoor unit including VAT for a deep clean and odour treatment in and around Lancashire. That sits a little below the UK middle, reflecting typical North West England labour rates. More indoor units, heavy build-up on the fan or a blocked drain line are what move the price towards the upper figure. On our North West England figures, the Two units option (deep clean of two indoor units on one visit) is about £250–£395.
One unit
Deep clean of a single indoor unit.
Two units
Deep clean of two indoor units on one visit.
Clean and service
Deep clean plus a full service of the system.
Permissions
No planning or F-gas work is involved in a deep clean, though the engineer will tell you if the system shows signs of a refrigerant leak.
The visit
Before booking, tell us the make and model and what the system is doing. We confirm the visit price, then the engineer arrives with the right equipment and, where possible, the right parts. Visits in Lancashire are booked at a price agreed with you in advance. If the engineer finds anything beyond the agreed work, they explain it and price it before carrying it out.
What is included
Included with a deep clean and odour treatment across Lancashire:
- Test run and readings
- Filter wash
- Drain tray and line flush and sanitise
- Coil cleaner and thorough rinse
- Fan barrel cleaning
- Dust sheets and waterproof cleaning bag
Towns in Lancashire
Pick your town for local details, or see every service in Lancashire.

