SIP Heaters
SIP heaters keep workshops, garages and site spaces usable when the temperature drops, with electric and diesel units built for proper trade heating jobs.
When you're trying to keep a workshop moving through winter or get heat into a cold garage before first light, SIP heaters are the sort of kit worth buying once and using hard. This range covers SIP fan heater, SIP space heater and larger SIP industrial heater options for drying out work areas, taking the edge off open bays, and keeping lads productive. If you're weighing up rental heaters or heater hire against ownership, start by matching output, fuel type and ventilation to the space, then pick the unit that will actually do the job.
What Are SIP Heaters Used For?
- Heating a cold workshop or unit lets mechanics, fabricators and maintenance teams keep working properly when tools, hands and materials are stiff from the cold.
- Drying out garages, refit areas and recently plastered spaces helps speed up follow-on trades, especially when you need a room usable without waiting days for warmer weather.
- Taking the chill off site cabins, stores and enclosed work zones makes early starts more manageable and stops lads wasting time warming up in the van.
- Warming larger open areas with a SIP industrial heater suits warehouses, farm buildings and bigger workshop bays where a small domestic heater would do next to nothing.
- Backing up temporary heating on breakdown jobs or winter maintenance work gives you a practical alternative when you're comparing rental heaters, heater hire or a unit of your own.
Choosing the Right SIP Heater
Sorting the right one is simple: match the heater to the space and airflow, not just the price tag.
1. Electric vs Diesel
If you're heating an enclosed workshop, garage or indoor work zone, electric is usually the easier answer because there are no fumes to manage. If you're working in a larger, draughtier or semi-open area and need more outright heat, a diesel SIP industrial heater makes more sense, but you must allow for proper ventilation.
2. Size the Output Properly
Do not buy a small SIP fan heater for a big workshop and expect miracles. If it's a single garage or small enclosed room, a compact unit can take the edge off. If it's a large bay, unit or open-fronted space, step up the output or you'll just be heating the air nearest the machine.
3. Think About Power on Site
If you're choosing electric, check what supply you've actually got before ordering. There is no point buying a bigger heater if the workshop or site only gives you a limited power source. On sites with temporary power issues, some teams pair portable heat with SIP Generators to keep things running.
4. Buy vs Hire
If you only need heat for a one-off event or a very short spell, heater hire can stack up. If you're heating the same workshop, garage or unit through every winter, buying your own SIP heater usually works out better and means the kit is there when the cold turns up.
Who Uses These on Site?
- Garage owners and mechanics use SIP heaters to keep workshop floors, bays and benches warm enough to work through winter without losing half the morning to the cold.
- Builders and refurb teams reach for them when they need to dry out rooms, warm enclosed work areas and keep jobs moving during cold snaps.
- Warehouse and yard maintenance teams use a SIP space heater in loading areas, stores and service bays where fixed heating is patchy or non-existent.
- Farm and estate workers rely on larger units for sheds, outbuildings and machinery spaces where a bit of portable heat makes servicing and repairs far easier.
- Site managers often keep one in reserve for temporary heat in welfare areas or enclosed snagging zones, especially when heater hire costs start adding up over a long winter job.
The Basics: Understanding SIP Heaters
Portable heaters all do the same basic job, but the type you choose changes where you can use it and how well it copes with the space. Here is the simple version.
1. Electric Fan Heaters
These pull air through the unit and push out steady heat with a fan. They are the practical option for enclosed workshops, garages and indoor work areas where you need clean, straightforward heat without fuel storage or exhaust fumes.
2. Diesel Space Heaters
These are built for bigger spaces and tougher heating jobs. They produce more serious output for open bays, yards and large work areas, but they are not something to run in sealed spaces without proper ventilation and site sense.
3. Output Matters More Than Looks
The main thing is how much space the heater can realistically warm. A small heater can be fine for a bench area or single garage, but once you move into larger workshops or draughty units, you need more output or the heat just disappears before it reaches the job.
Accessories That Make SIP Heaters Easier to Live With
A few sensible add-ons save wasted time, poor performance and cold starts on winter jobs.
1. Extension Leads and Site Power Leads
This stops the usual nonsense of having the heater in the wrong place because the cable will not reach. Use the right rated lead for the heater load so you are not choking performance or tripping supply halfway through the day.
2. Fuel Cans for Diesel Models
If you are running a diesel SIP space heater, keep clean fuel stored properly and close by. It saves you having the unit sat dead in the cold because someone forgot to top up before the morning shift.
3. Work Lights
Heating and visibility usually go together on winter jobs. Pairing your setup with Torches & Lighting makes enclosed work areas safer and more usable when daylight has gone by mid-afternoon.
Choose the Right SIP Heaters for the Job
Use this quick guide to avoid undersizing the heater for the space.
| Your Job | SIP Heater Type | Key Features |
|---|---|---|
| Warming a small garage or enclosed bench area | Compact SIP fan heater | Electric operation, easy setup, clean indoor heat, suits smaller spaces |
| Keeping a workshop usable through winter | Mid-size SIP workshop heater | Steady heat output, portable format, better coverage for regular day to day use |
| Heating a larger bay, unit or warehouse corner | High output SIP space heater | Greater airflow and heat throw, suited to bigger draughtier areas |
| Temporary heat in semi-open industrial spaces | Diesel SIP industrial heater | High output heating, better for tougher environments, needs ventilation |
| One-off short term winter work | Heater hire alternative check | Compare rental cost against buying if the heater will be used again next season |
Common Buying and Usage Mistakes
- Buying too small to save money is the usual mistake. The heater runs all day, the space still feels cold, and you end up wishing you had gone up a size from the start.
- Using a diesel heater in the wrong space causes more problems than it solves. If the area is enclosed and poorly ventilated, stick with electric or sort the airflow properly first.
- Ignoring the available power supply catches plenty of people out. Check the site or workshop can actually support the heater you want, otherwise you are paying for output you cannot use.
- Comparing purchase price without looking at running cost gives a false saving. Work out how often the heater will be used and what it costs per hour, then decide whether buying or heater hire makes more sense.
- Plonking the heater in a corner behind stock or kit ruins airflow. Give it clear space so the heat can move around the room instead of blasting one cold wall all day.
Electric Heaters vs Diesel Heaters vs Rental Heaters
Electric SIP Heaters
Best for enclosed workshops, garages and indoor work areas where clean, straightforward heat matters most. They are easier to live with day to day, but they rely on having the right power supply and they will not match diesel for big open spaces.
Diesel SIP Heaters
Best for large bays, semi-open units and tougher heating jobs where raw output is the priority. They hit harder than electric, but you need to manage fuel, ventilation and where the unit is being used.
Rental Heaters
Best if you only need temporary heat for a short contract or emergency breakdown period. If the same cold workshop needs heating every winter, rental heaters soon cost more than buying your own unit.
Maintenance and Care
Keep Air Inlets Clear
Dust, cardboard fluff and workshop muck soon clog a heater. Brush or vacuum vents regularly so airflow stays strong and the unit is not working harder than it needs to.
Check Cables and Plugs
Portable heaters get dragged about, so inspect leads and plugs before winter sets in. If the cable is nicked or the plug is loose, sort it before it becomes a site fault.
Store Diesel Properly
For diesel units, clean fuel matters. Use proper containers, keep water and dirt out, and do not leave old fuel sitting around all year if you want reliable starts when the weather turns.
Do a Pre Season Test
Do not wait until the first freezing morning to find out the heater is dead. Run it up before winter, check output, noise and controls, and replace any worn parts while you have time.
Repair vs Replace
If it only needs a lead, switch or basic service part, repair usually makes sense. If output is poor, the casing is battered and reliability is gone, replacing it will save more grief than nursing it through another winter.
Why Shop for SIP Heaters at ITS?
Whether you need a compact workshop heater, a bigger SIP fan heater or a high output SIP industrial heater for tougher spaces, we stock the range in one place. You can also shop the wider SIP Tools & Equipment range or compare with other Heaters if you are still sizing the job up. It is all held in our own warehouse, in stock and ready for next day delivery.
SIP Heaters FAQs
How much does it cost to hire an outdoor heater?
It depends on heater size, fuel type and how long you need it for, but outdoor heater hire is usually only worth it for short term use. If you are heating the same yard, workshop entrance or covered outdoor area more than once, buying often catches up quickly and saves the repeat hire paperwork.
How much does a heater cost an hour?
That comes down to the heater output, the electricity tariff or diesel price, and how hard the unit has to work in the space. A properly sized heater costs less to run effectively than an undersized one left flat out all day trying to warm a space it cannot cope with.
What size heater do I need for a workshop or garage?
Start with the actual size of the space, how insulated it is, and whether doors are opening all day. A small enclosed garage can be handled by a compact SIP fan heater, but a larger workshop bay or draughty unit needs more output or you will barely notice the heat.
Is it cheaper to buy or hire a heater?
For a one-off short job, hire can be the cheaper route. For regular winter use in the same workshop, garage or unit, buying is usually the better call because you stop paying the same hire charge over and over and the heater is ready when you need it.
What's the difference between an electric and a diesel space heater?
Electric heaters are the safer, simpler choice for enclosed indoor spaces because there are no fumes and setup is straightforward. Diesel space heaters are better for larger or more open areas where you need bigger heat output, but they need fuel on hand and proper ventilation.
Are SIP heaters good enough for proper workshop use?
Yes, provided you buy the right output for the space. SIP kit is aimed at trade and workshop use rather than light domestic warming, so it suits garages, units and work areas where the heater is expected to earn its keep through winter.
