Plain-English guides to home air conditioning: systems, costs, installation and choosing the right company.
Why your windows run with water every winter morning, the quick fixes for tonight, the longer-term ones in order of cost, and where a heat pump or a dehumidifier genuinely helps.
18 Oct 2026
The humidity level to aim for in a UK home, what too high and too low look like, how to measure it, and what air conditioning, heating and dehumidifiers actually do to it.
18 Oct 2026
Short answer: no. A dehumidifier makes a room slightly warmer. Here is why, what drier air does and does not do for comfort, and whether you need a dehumidifier, air con, or both.
14 Oct 2026
Evaporative cooling is cheap to run and works brilliantly in dry climates. British air is a different story. Here is the science in plain English, with real UK numbers, and where each one makes sense.
14 Oct 2026
Eight wall-mounted air-to-air heat pumps ranked on heating, not cooling: SCOP, heating output at 2.5kW and 3.5kW, how cold they keep going, quiet-mode noise, price, and which ones are actually on the MCS list for the £2,500 grant.
11 Sep 2026
Real indoor and outdoor decibel figures for UK wall splits, what sound power and sound pressure actually mean, how the MCS 020 a) 37 dB(A) test works, and how to stop an outdoor unit annoying anyone at night.
9 Sep 2026
Panel heater, oil-filled radiator, infrared, underfloor, log burner, or a small heat pump: what each costs to buy and to run per working day and per winter, the electrics and planning you need, and why the £2,500 grant will rarely help.
7 Sep 2026
Infrared panels are cheap to buy and silent, but they cost four to five times more per unit of heat than an air-to-air heat pump. Here is the honest comparison, with the sums.
3 Sep 2026
A wall split used for heating needs one professional service a year, ideally before the cold arrives, at £60 to £150 per unit. Here is the checklist you can do yourself, what the engineer does, and how to tell normal frost from a real fault.
1 Sep 2026
Ten settings and habits that change what your wall split costs to heat with, ranked by impact, plus the honest answer on leaving it on all day and a worked monthly example.
28 Aug 2026
Every UK heat pump tariff compared for the reverse-cycle split you run in the evenings: eligibility, cheap windows, peak rates, the MCS certificate catch, and the sums that show when you would lose money.
26 Aug 2026
Yes, they do. Every mainstream wall split sold in the UK heats to at least minus 15°C, and the UK January average is about 4°C. Here is what really changes when it gets cold, from falling COP to defrost cycles and iced-up outdoor units.
24 Aug 2026
Every plug-in heater costs the same per kilowatt: 53p an hour for 2kW. An air-to-air heat pump delivers the same heat for 11p to 13p. The full table, evening and winter totals, and when a £10 fan heater is still the right buy.
21 Aug 2026
Two very different products share one name. Here is what each heats, what each costs to fit and run, which grant applies, and which suits your home.
19 Aug 2026
Old storage heaters are the most expensive heating most people will ever own. Here is what each replacement really costs to run in a 1-bed and 2-bed flat, what a heat pump install involves in a flat, and where the grant stands.
17 Aug 2026
A modern wall split heats a room for 14p to 23p an hour, a third of what a fan heater costs. Here is the maths, the settings that matter, and what happens when it gets cold.
14 Aug 2026
Real UK supplied-and-fitted prices for air-to-air heat pumps by scope, unit-only prices for the ranges we review, running costs against fan heaters, storage heaters and gas, and what the £2,500 grant and 0% VAT do to the sums.
12 Aug 2026
The Boiler Upgrade Scheme now offers £2,500 towards an air-to-air heat pump in England and Wales. Here is who qualifies, how the application works, what the money covers, and why almost nobody has received it yet.
10 Aug 2026Real UK installed prices for ducted (concealed) air conditioning in 2026 by number of rooms, what moves the cost, how it compares with multi-split, and when the whole-home finish is worth the premium.
6 Aug 2026How to cool and heat a home office or a detached garden room for year-round working from home: the best system for each, what it costs to run at work-day rates, keeping it quiet for calls, powering an outbuilding, and the planning rules.
3 Aug 2026What you can install in a flat depends on your lease, your outdoor space, and whether you rent or own. Here is how to cool a flat legally, from portables for renters to a proper split if you can get freeholder consent.
31 Jul 2026Window air conditioners exist in the UK but rarely suit our homes. Here is why they seldom fit UK windows, and the alternatives worth buying instead.
27 Jul 2026What makes an air conditioner smart, how Wi-Fi and app control work, and the two ways to get it: a unit with built-in Wi-Fi, or a low-cost controller that makes almost any unit smart.
24 Jul 2026How to cool a home with no outdoor condenser, using a monobloc wall unit or a portable, plus the honest trade-offs in efficiency, output and noise.
20 Jul 2026Why conservatories overheat, why air conditioning beats blinds and fans, and the best system to cool your conservatory in summer and heat it in winter, with real UK costs.
17 Jul 2026A UK troubleshooting guide for a home unit that has stopped cooling: the common causes in order, the DIY fixes that cost nothing, and when to call an engineer.
13 Jul 2026An honest UK comparison of evaporative air coolers, portable air conditioners, fans and splits, so you spend your money on cooling that works in a British summer.
10 Jul 2026Most air conditioning maintenance is simple DIY. Here is how to clean the filters, indoor and outdoor units, drains and portables, and where the F-Gas line falls.
6 Jul 2026A heatwave buyer's guide to what you can legally fit yourself, what needs an F-Gas engineer, and how to buy online without getting caught out.
3 Jul 2026
A practical, honest ladder of ways to keep your house cool in a UK heatwave, from free fixes to fans, portable units and fitted air conditioning.
30 Jun 2026
The best home air conditioning units in the UK by use case, covering fixed wall-mounted splits and portables, with specs, indoor noise, prices and how to choose.
29 Jun 2026
The quietest portable air conditioners on sale in the UK, ranked by noise in decibels, with an honest look at what counts as quiet and the noise-versus-cooling trade-off.
28 Jun 2026
The quietest bedroom air conditioning, decoded. How many decibels you can sleep through, why splits beat portables on noise, and the UK units that actually hit the numbers.
27 Jun 2026
Our ranked picks of the portable air conditioners actually sold in the UK, by use case and budget, with honest noise figures, prices and the no-hose myth busted.
26 Jun 2026
A fan moves air to make you feel cooler; air conditioning actually lowers the room temperature and dries the air. Here is what each really does, what they cost to run, and when a fan is enough versus when you need AC.
24 Jun 2026
The honest answer on hose-free portable air conditioners in the UK: why most are evaporative coolers, the one genuine no-hose option, and what to buy if you cannot fit a hose.
23 Jun 2026
Real UK prices for home air conditioning in 2026, by system type, plus running costs, the hidden extras and what moves the price up or down.
22 Jun 2026
Honest, dated running costs for home air conditioning, from pence per hour to a full summer. See the maths, the by-size table, and why AC heating can beat gas.
20 Jun 2026
Single split, multi-split, ducted or portable? A plain-English guide to picking the right home air conditioning unit for your rooms, budget and whether you want heating too.
18 Jun 2026
A reverse-cycle air conditioner is already a heat pump. Here is how home air conditioning and air-source heat pumps really compare, and which warms your home in winter.
16 Jun 2026
An honest UK cost-benefit look at home air conditioning: when it earns its money, when it does not, and how to tell which side of the line you are on.
15 Jun 2026
A plain-English walkthrough of how air conditioning is installed in a UK home, step by step, plus how long it takes, the F-Gas rules and why fitting a split is not a DIY job.
13 Jun 2026
How to work out the right air conditioning size for a room in BTU and kW, with a clear UK sizing table, the adjustments that change your answer, and a worked example.
12 Jun 2026
A professional service once a year is the UK norm for home air conditioning, with simple filter cleaning by you in between. Here is what a service covers, what it costs, and what you can safely do yourself.
11 Jun 2026
Dyson does not make an air conditioner. Here is what its fans, heaters and purifiers really do, why they cannot cool a room, and what to buy if you want real cooling.
9 Jun 2026
A calm, evidence-led look at whether home air conditioning is bad for you, separating myth from fact on colds, dry air, allergies, legionella and sleep, plus how to run it healthily.
8 Jun 2026
A cooling-only unit usually needs full planning permission in England, while a reverse-cycle (heat and cool) unit is often permitted development. Here are the rules, the conditions and the exceptions.
6 Jun 2026
A plain-English guide to how home air conditioning works: it does not make cold, it moves heat. We explain the refrigeration cycle, the parts and the jargon.
4 Jun 2026
