De'Longhi
Primary question · Are De'Longhi's Pinguino portables genuinely better than the supermarket boxes?
The best-executed portable AC brand in the UK; Pinguino remains the default if a portable really is your only option.
De'Longhi occupies an unusual position: they make the best-executed unit in a category we would rather most people did not buy at all. A Pinguino is a genuinely well-built portable, and the R290 refrigerant range gives it a lower running cost than the supermarket alternatives; but a portable AC is still a portable AC, and the physics of a flexible hose in a UK sash window is unchanged by the badge on the front. Judged against other portables, Pinguino wins comfortably; judged against a properly-installed fixed split, no portable wins.
- The property is rented and a fixed install is not permissible
- The room only needs cooling for a handful of nights per year and the budget rules out a fixed unit
- A move is planned within twelve months
- A fixed install is possible and the homeowner plans to stay three or more years
- The window is a traditional sash where no portable seal kit fits neatly
- Overnight noise matters; every portable is louder than any fixed split
£350–£700 typical; the top of the portable market, and worth the premium against supermarket own-brand.
Not applicable; portables are self-install. Merchant support is the real question, and De'Longhi's UK service is decent.
A brand profile is only useful if it survives the questions an informed buyer would put to the installer. These are ours.
- 01
Does the window kit actually fit your window, measured, before ordering?
- 02
Is the quoted model R290 (Pinguino PAC EX) or the older R410a stock?
- 03
Where will the condensate go — continuous drain, or a tank that needs emptying nightly?
- 04
How loud is the specific model at its lowest fan speed, in the room it will actually live in?
The suitability matrix
Where De'Longhi fits, where it works with caveats, and where we would look elsewhere.
Purpose-built flat
Neighbours on three or four sides borrow and lend heat; single-aspect glazing dictates ventilation strategy; freeholder permission decides which upgrades are on the table.
Victorian terrace
Solid brick walls, sash windows, single-skin extensions round the back and party walls that quietly ration the ways heat can leave; the archetype where insulation strategy determines everything else.
Stone cottage
Thick permeable walls, small deep-reveal windows and a listing sensitivity that constrains every intervention; the archetype where the wrong upgrade causes damage the previous three centuries avoided.
1930s semi
Solid or early-cavity walls, a bay-fronted ground floor and a loft that is nearly always the room worth insulating first; the archetype where the cheapest fix routinely beats the exciting one.
Modern detached
Cavity-wall construction, generous glazing, a detached plot that opens the archetype up to the sun in three directions; the archetype where cooling starts to earn its place on the plan rather than being an afterthought.
New build
A tight fabric, generous glazing and an MVHR system that is either the archetype's biggest advantage or its most-neglected liability; the archetype where the questions are about air more than heat.
1960s–80s detached
Timber-framed or cavity-walled with hung tile above the ground floor and thermal bridging that quietly runs the annual bill; the archetype where drawings on file are worth more than any assumption.
Bungalow
Single storey with the loft immediately overhead; overheating and heat loss both travel through one large surface, which is either the archetype's biggest liability or its cheapest fix.
Town house
Three storeys stacked over an integral garage; heat rises through the stairwell; overheating settles on the top floor while the ground floor stays reasonable.
Chalet-dormer
One-and-a-half storeys with living space pushed into the roof; dormer rooms behave more like a loft conversion than a bedroom.
Bedroom
A small volume with one occupant contributing sensible and latent heat for eight hours; overnight comfort is dictated by ventilation strategy and by whatever radiates through the ceiling from the loft above.
Home office
One occupant plus screens contribute meaningful heat across a working day; ventilation, acoustics and comfort compound rather than trade against each other.
Living room
The largest habitable volume in most homes and rarely on its own thermostat; wall placement is part of the room's composition, so the visual answer matters as much as the acoustic one.
Conservatory
Glazed walls and roof deliver enormous solar gain by midday and equally enormous heat loss overnight; the physics rules out year-round comfort in most UK conservatories without a structural intervention.
Loft conversion
Thin insulation between rafters, a hot roof above and rooflights that resist proper shading; the hardest room in a UK house to keep within comfort in summer and the easiest to lose heat from in winter.
Why we have reached this conclusion
Why we still recommend Pinguino inside a category we would rather you skip
When a fixed install is genuinely off the table, a Pinguino is the honest answer. It is quieter than the supermarket alternatives, R290 is measurably cheaper to run, and the build survives a UK summer's worth of cycling. That is faint praise for the category and a real endorsement of the specific brand within it.
Specific De'Longhi products, with a verdict.
This is our editorial profile of De'Longhi; not a spec sheet, and not a sponsored write-up.
Read the verdict, then look at the specific units we have a view on further down the page.
- The honest UK guide to air conditioning
Most of our brand thinking is downstream of this hub.
- Compare brands side by side
The comparison surface (Thread 5) sits above every brand page.
De'Longhi: we still recommend Pinguino inside a category we would rather you skip.