Space Heaters
Space heaters give you fast, targeted heat where the job actually happens, whether that's drying out a room, warming a workshop, or heating for warehouse work.
When the building's cold, damp and not fit to work in, a proper space heater gets some usable heat into the area without waiting on full system heating. These space heaters are used by site teams, maintenance lads and fitters for workshops, stores, temporary work areas and heating for warehouse jobs where you need warmth where the graft is, not at the thermostat. If you also need full seasonal kit, see Heaters, Fans and Dehumidifiers to get the space sorted properly.
What Are Space Heaters Used For?
- Warming up cold workshops, garages and lockups lets you actually get on with bench work, servicing and snagging without freezing hands slowing everything down.
- Heating for warehouse picking areas, goods-in bays and packing stations helps keep staff working comfortably in big spaces where full building heat is either patchy or too expensive to run all day.
- Drying out recently plastered rooms, decorated areas and damp corners works better when you pair steady heat with airflow and sensible ventilation rather than just leaving the place cold and wet.
- Keeping temporary site offices, canteens and welfare spaces usable through winter stops the morning start being wasted while everyone waits for the chill to lift.
- Taking the edge off in refurb rooms and first-fix areas gives sparks, plumbers and joiners a warmer working patch when the main heating is off or not commissioned yet.
Choosing the Right Space Heater
Sorting the right space heater is simple: match it to the size of the area, the power you have on hand, and whether people are working in that heat all day.
1. Small Room vs Large Open Area
If you're just taking the chill off a small room, office or workshop corner, a compact electric unit usually does the job. If you're heating for warehouse space or a big open bay, don't kid yourself that a tiny heater will touch it. You need higher output and realistic expectations about how much area one unit can cover.
2. Electric Supply Matters
Check what power you've actually got before you buy. A heater is only useful if you can run it safely where the job is. If the heater needs a proper site power setup, plan for it with Extension Reels & Leads that are rated for the load, not whatever old lead is kicking about in the van.
3. Background Heat vs Directed Heat
If lads are working in one fixed spot, directed heat aimed into that work zone makes more sense than trying to warm the whole building. If the whole room needs drying or steady background warmth, go for a heater that can run consistently without creating hot and cold patches.
4. Drying Out Needs Air Movement Too
Heat on its own is not a magic fix for damp rooms. If you're trying to dry plaster, paint or a wet space, combine the heater with airflow from Fans or moisture control from Dehumidifiers so you're shifting moisture out, not just making the room muggy.
Who Uses These Space Heaters?
- Site managers and small works teams use space heaters to warm welfare rooms, drying areas and temporary work zones so jobs can keep moving in cold weather.
- Plumbers and heating engineers reach for a space heater when they're commissioning systems, draining down properties or working in houses where the main heat is off and the rooms are bitter.
- Warehouse staff and maintenance teams rely on heater space around loading bays, picking aisles and benches where full-building heating never seems to reach properly.
- Decorators and refurb crews use them to help take the chill and damp out of rooms between coats, especially when paired with airflow rather than blasting direct heat at one patch.
The Basics: Understanding Space Heaters
A space heater is there to warm a defined area faster than waiting for full building heating. The important bit is knowing whether you're heating people, a room, or a larger working zone.
1. Spot Heat
This is when you aim heat at the bit of the job where people are actually standing or working. It makes sense in workshops, benches, stores and small bays where warming the whole building would waste time and power.
2. Background Room Heat
This is steady heating to lift the overall temperature in a room so it's usable for longer spells. It suits offices, welfare rooms, refurbs and enclosed workspaces where the heat can build and hold.
3. Large Volume Heating
Big open units like warehouses and loading bays lose heat fast, so one heater rarely fixes the whole problem. For heating for warehouse work, think in zones and output, not just buying the biggest looking box and hoping for the best.
Space Heater Accessories That Save Hassle on Site
A few sensible add-ons make a space heater safer to run and far more useful in real working areas.
1. Extension Reels and Heavy Duty Leads
This saves you dragging a heater to the wrong end of the room just because the socket is miles off. Use proper Extension Reels & Leads rated for the heater load so you are not tripping power or overheating cheap cables.
2. Air Movers and Fans
A heater can leave one area roasting and the rest cold. Pairing it with Fans helps push warm air across the room and stops damp corners staying clammy.
3. Dehumidifiers
If you're drying out a room after leaks, plastering or decorating, heat alone can just make the air heavy. Dehumidifiers pull that moisture back out so the job finishes properly.
4. Site Lighting and Torches
Cold jobs often mean dark corners, loft spaces and half-finished rooms as well. Good Site Lighting & Torches lets you position the heater safely, check clearances and keep working when daylight drops off.
Choose the Right Space Heater for the Job
Use this as a quick guide before you pick your heater space setup.
| Your Job | Space Heater Type | Key Features |
|---|---|---|
| Warming a small office, site cabin or welfare room | Compact electric space heater | Steady background heat, easy placement, suits enclosed spaces |
| Taking the edge off in a workshop bay or garage | Portable fan assisted space heater | Quicker heat spread, easy to move, good for bench and repair areas |
| Heating for warehouse picking or packing zones | Higher output space heater | More reach, better for open areas, works best when aimed at a defined zone |
| Drying out a damp room after plastering or leaks | Continuous run electric heater | Consistent warmth, works well with airflow and moisture control |
| Temporary heat in refurbs with no live central heating | Portable site heater | Fast setup, easy relocation, practical for room to room work |
Common Buying and Usage Mistakes
- Buying a small space heater for a large warehouse is the classic mistake. It will warm the air right in front of it and not much else, so size the heater to the actual area and heat loss.
- Assuming heat alone will dry a damp room wastes time. Without airflow or moisture extraction, you can end up with warm, wet air hanging about instead of a room that actually dries.
- Running a powerful heater through the wrong lead is asking for trouble. Use properly rated cables and keep them fully uncoiled where required so they do not overheat under load.
- Placing a heater too close to stock, dust sheets or site rubbish is poor practice. Keep proper clearance around the unit so airflow is not blocked and fire risk stays under control.
- Leaving a heater running unattended overnight without checking the manufacturer guidance is risky. If overnight use matters, choose a model designed for that duty and follow the operating instructions to the letter.
Portable Space Heater vs Fan Heater vs Convector Heater
Portable Space Heater
Best when you need movable, targeted heat in changing work areas. It suits refurbs, workshops and temporary setups, but coverage depends heavily on output and room size.
Fan Heater
Fan heaters throw warmth out quickly, which is handy when you want fast results in a cold room or bench area. They are less ideal if you want quiet, steady background heating for long periods.
Convector Heater
Convector heaters are better for gradual room warming in enclosed spaces like offices and cabins. They are not usually the best pick for draughty warehouse zones where the heat disappears as fast as it builds.
Maintenance and Care
Keep Vents Clear
Dust and fluff build up quickly in workshops and stores. Brush or vacuum the intake and outlet vents regularly so airflow stays strong and the heater does not run hotter than it should.
Check Leads and Plugs
Before each spell of use, inspect the power lead, plug and any extension setup for cuts, crushed sections or loose fittings. If the cable is damaged, stop using it and replace it properly.
Store It Dry and Upright
Do not leave the heater chucked in a damp van floor or leaking stores room. Dry storage helps protect electrics, stops corrosion around fixings and means it is ready when the cold weather comes back round.
Do Not Ignore Strange Smells or Noise
A burning smell, rattling fan or repeated cut-out is a sign something is not right. Clean it first, check the airflow path and if it still plays up, repair or replace it before it becomes a bigger problem.
End of Season Check
Before it goes back into storage, give the unit a proper clean and test run. It is better to find faults now than on the first freezing morning when everyone is waiting for heat.
Why Shop for Space Heaters at ITS?
Whether you need a small space heater for a cabin or a higher output unit for heating for warehouse areas, we stock the range that matters. ITS carries space heaters, site heating kit and the supporting gear in our own warehouse, all in stock and ready for next day delivery.
Space Heater FAQs
Can a space heater warm a house?
Yes, a space heater can warm part of a house, especially a single room or work area, but it is not a replacement for full central heating across the whole property. For best results, use it for targeted heat where you are actually working or living rather than expecting one unit to sort the whole place.
What size space heater is needed for a warehouse?
That depends on the floor area, ceiling height, insulation and how draughty the space is. The honest answer is most warehouses are better heated in zones, because one small space heater will not touch a big open building. Measure the area you actually need to warm and choose output to match that working zone.
Are space heaters safe to leave running overnight?
Some are designed for longer running, but do not assume every unit is fine to leave unattended overnight. Follow the manufacturer guidance, keep the heater clear of combustibles, make sure it is on a stable surface, and if unattended use is critical, choose a model intended for that duty.
Will a space heater dry out a damp room on its own?
It helps, but not on its own in most cases. Heat lifts the air temperature, but without airflow or moisture extraction you can just end up with warm damp air. For proper drying, pair the heater with ventilation, fans or a dehumidifier.
Can I run a space heater off any extension lead?
No. A space heater pulls serious load compared with lighter site kit, so the lead needs to be rated properly. Use the right cable, keep it in good condition and do not rely on thin domestic leads that get hot under load.
Are these space heaters any good for open door workshops and loading bays?
Yes, but only if you use them realistically. In open or draughty areas, they work best as targeted heat for a bench, bay or staff position rather than trying to heat the full volume of cold air coming through the opening.
