When contemplating how you can warmth a brand new loft conversion, there are a selection of vital issues to take into consideration earlier than you make your selection. In addition to selecting an answer that fits the dimensions, area and goal of your loft conversion, you additionally must take into consideration elements corresponding to air flow and insulation – each of which might influence how effectively it operates.
Due to this fact, slightly than it being an afterthought, your loft conversion heating is one thing that needs to be deliberate as an integral a part of your loft conversion design course of.
This is what the specialists say are your greatest choices for loft conversion heating and how you can be sure you put the appropriate circumstances in place for it to work effectively.
Elements influencing your loft conversion heating
Earlier than you begin investigating your loft conversion heating choices, you will want to have a look at the sensible parts corresponding to the dimensions and sort of loft conversion – how a lot warmth will you want to be able to hold it comfortably heat with out being too scorching in summer time?
How you intend on utilizing the area may also should be taken under consideration. Will or not it’s a grasp bed room loft conversion with ensuite that is used year-round, or a visitor bed room solely used occasionally? This data will all assist information you in the appropriate route to your loft conversion heating system, in addition to the sorts of heating controls you want, corresponding to thermostats and timers.
And naturally, value may also come under consideration as you will must weigh up how a lot every sort will value and the work concerned in getting it in place.
Insulation and air flow
Loft insulation and loft air flow are two of the primary influencing elements in your loft conversion heating selections as you will must be sure you have enough airflow and heat.
In the event you’re contemplating loft conversion concepts as half of a bigger home renovation challenge, you might be going through a bigger problem than you initially anticipated. Attics in older residential homes had been not often meant to function residing areas, which means they will get very chilly in winter, but in addition, conversely, can get very popular in summer time, as warmth rises via the home and strikes into the roof area.
Or, maybe you have already renovated your house and a loft conversion provides you with the ultimate further room you want, through which case it is seemingly you should have already undertaken lots of work to insulate the rest of your house, once more probably leading to warmth rising via the house into the loft.
Nevertheless, you will nonetheless want to make sure you set up the proper loft insulation to be able to retain any new warmth you generate, and to assist save in your power payments. Any smooth furnishings you add when adorning may also assist to insulate the area, as will selecting carpets to your loft conversion flooring concepts and double or triple glazing to your loft home windows.
Home windows and their influence on loft conversion heating
Massive home windows and skylights set into the roof – a standard design characteristic in loft conversions – might properly add mild, however may play a component in how properly your loft conversion heating performs.
Home windows should be a part of your loft air flow system in order that they are often opened and closed to help airflow within the hotter climate, however additionally they must hold warmth inside throughout the colder months.
So, in addition to wanting on the proper glazing choices, bear in mind your window dressings additionally want cautious consideration. Becoming blackout thermal blinds is a good choice to assist stop warmth escaping via the glass in winter. Likewise, utilizing glass with a photo voltaic coating might stop an excessive amount of warmth getting into the area throughout summer time. It is all about giving your self the perfect management over your loft conversion heating by no matter means attainable.
Forms of loft conversion heating
There are two important choices to your loft conversion heating – radiators or underfloor heating. How these are powered will rely in your important residence heating system, though moist programs corresponding to moist underfloor heating and radiators will contain barely extra work than putting in electrical led choices corresponding to electrical underfloor heating.
Nevertheless, extending your system to incorporate the loft is not too difficult, says Andrew Parrish, director of A. Parish Heating, so long as you bear the next in thoughts.
“Putting in central heating right into a typical loft conversion must be pretty straight ahead if the home has a normal radiator system powered by gasoline or oil. Piping up a few further radiators isn’t too laborious for a professional installer, however there are a few issues to contemplate, says Andrew, “the primary one being whether or not the present boiler has the capability for the additional demand.
“If the present boiler is undersized it can should be changed with a better output mannequin, though in my expertise most UK boilers are outsized anyway,” notes Andrew. “Combi boilers specifically are unlikely to want changing as the sort of boiler typically solely makes use of its full output when producing home scorching water for faucets and showers,” he says.
“As soon as the warmth lack of the loft has been calculated and adequately sized radiators chosen you’ll be able to then set up in case your present boiler will meet your wants. And, do bear in mind, radiators which are sized to run at a decrease circulate temperature (50°C) may also assist the boiler to run extra effectively,” he provides.

Andrew Parish has over 18 years expertise working as a home heating engineer. He now heads up a crew of engineers at his firm, primarily based in Harrogate. They design and set up initiatives involving plumbing, heating, gasoline, air-con and renewables.
Radiators for loft conversion heating
When putting in radiators as your loft conversion heating, step one is to measure the area after which calculate the quantity of British Thermal Items (BTUs) that the radiator might want to emit to be able to warmth it. It will then dictate the dimensions, fashion and sort of radiators you select.
Nevertheless, the form of the area, which can have a sloping roof with low partitions relying on the kind of loft conversion you are including, might imply there may be much less area obtainable inside which to put in a radiator.
“One answer is to go for a protracted, low horizontal fashion of radiator,” suggests Nick Duggan, managing director of The Radiator Centre. “These match brilliantly on dwarf partitions below sloped ceilings and there are some nice choices obtainable to select from in each conventional and up to date types.
“In areas the place the wall top is larger, the general area is usually nonetheless restricted and, in these circumstances, a vertical choice stands out as the reply as an alternative,” he provides.
“Alternatively, the place wall area merely is not an choice in any respect, a flooring standing design is an efficient selection,” says Nick.
If it isn’t attainable to increase central heating pipes into the area, the choice is to pick out electrical radiators as an alternative. These could be wired into the electrical energy system, thereby avoiding the set up of difficult pipework. This could be very true if the area is just used often as a spare bed room as an example.
“Electrical radiators are an awesome choice for loft conversions,” agrees Nick Duggan. “They’re straightforward to put in, don’t require extending present pipework, and provide exact, room-by-room management. That mentioned, they are often dearer to run,” he notes.
“Moist-fed radiators, alternatively, combine seamlessly together with your central heating and are usually less expensive long-term, however set up could be extra complicated. Your best option usually comes all the way down to how the area will probably be used and the present heating setup,” says Nick.
If the area is to be heated by typical radiators, then the heating system may also should be rebalanced. You’ll be able to both do that your self or get an expert heating engineer to do it. As with every skilled tradespeople, be sure you get a spread of quotes earlier than you determine who to make use of. These quotes will then should be factored in to your total finances.
If the loft area is to be transformed into a toilet, then heated towel rails are additionally an excellent addition to your loft conversion heating plans, as they eradicate damp areas that encourage germs and mold in addition to lowering the necessity for further washing or tumble drying.
As with radiators, you will want to consider selecting the perfect measurement, form and magnificence to your ensuite loft conversion heating.

Nick has 20 years of expertise in central heating, main the crew at one of many UK’s largest unbiased suppliers of radiators.
Underfloor heating for loft conversions
There are a variety of choices when selecting underfloor heating for a loft dialog, with every having their very own advantages.
“Probably the most broadly instructed and useful inside a compact area is an overlay answer, such because the Wunda Speedy Response system,” says Tom Edmunds, basic supervisor at Wunda. “An overlay answer sits instantly on high of floorboards or chipboard which permits for the bottom attainable working temperatures, with most effectivity due to the floor proximity. It can be an awesome retrofit answer,” he provides, “limiting the necessity for intensive renovation disruption and value.
“Another choice can be to go for a spreader plate answer,” suggests Tom. “These plates are usually put in between wood joists or on suspended timber flooring, with heating pipes working via them.
“This requires for the floorboards to be lifted, extra insulation added between joists and beneath the floorboard. One profit of those programs is that they don’t add any top to the ground degree, nevertheless as they sit between the chipboard and flooring end, they run at a better temperature, leading to decrease effectivity.
“For the perfect effectivity, we suggest choosing a system that directs and spreads warmth utilizing a conductor corresponding to a thick aluminium and makes use of a pipe measurement of a minimum of 16mm,” says Tom. “It will enable for the perfect output and forestall the necessity for working at larger temperatures which might causes tramlines within the flooring and enhance working prices.”
The most important advantage of these kind of programs? They sit inside the present floorspace. “Some underfloor heating programs might add some extra top to the flooring degree, often between 20-25mm which can be a key consideration in a loft room the place top is already at a premium,” notes Tom.

Tom has been the final supervisor at underfloor heating specialists Wunda Group for over 15 years, overseeing product growth for the model and changing into an skilled on the heating trade within the UK within the course of.
Radiators vs underfloor: Execs and cons
Selecting the best loft conversion heating to your challenge will come all the way down to plenty of various factors, however what execs and cons do it’s essential to think about?
“Radiators are after all a standard set up challenge for all plumbers, so choosing them wouldn’t require any extra analysis. With being such a standard heating system, radiators are additionally an inexpensive answer to supply and buy,” says Tom Edmunds.
On the draw back, choosing radiators can require extra pipework, disruption and potential lack of wall area. That mentioned, radiator designs and types are additionally obtainable in an unlimited array of types, finishes, colors and designs which means they may in reality improve your loft inside, in addition to heating it.
Nevertheless, in case you sees you elevating a roof for a loft conversion, to be able to create sufficient headroom, the possibilities are you might have a small or irregular formed area through which case, “underfloor heating can present full freedom of design in terms of area planning due to not having any seen heating system inside the room itself,” says Tom. “All is hidden away, saving on area and releasing up partitions for decorations and arranging furnishings.”
FAQs
Will I want a separate thermostat?
“For loft conversions, we all the time suggest putting in a separate thermostat to manage the radiators independently,” says Nick Duggan. “Lofts are inclined to retain extra warmth, and having that further degree of management means you’ll be able to fine-tune consolation with out overheating the area or the remainder of the home. It’s a wiser, extra environment friendly strategy to get pleasure from heat precisely the place you need it, while you need it.”
In the event you do not set up a brand new thermostat, the present one must be adjusted to be able to allow the heating system to push warmth up into the brand new transformed loft, however that might additionally imply you having to show different particular person radiator controls down all through the remainder of the home. Moreover, if the present boiler is previous and lower than the job of heating the extra area, it could should be changed.
Andrew Parrish shares his last tip to contemplate when selecting your loft conversion heating.
“I additionally wouldn’t rule out the choice of putting in an air to air warmth pump/air-con unit. These items are electrical however are very environment friendly and could be put in with out an excessive amount of upheaval,” he says. “You would wish to discover a appropriate location for the exterior unit, however this might give the advantages of fast warmth up time within the colder months and cooling in the summertime.”