Vertical vs Horizontal Air Curtains – Which is Right for You?
Air Curtains are a proven way to protect your building from heat loss, reduce energy costs, and maintain comfortable conditions for occupants. At SPC, our industrial Air Curtains are designed for heavy commercial and industrial applications, with the power to protect doorways up to 6m high.
But when it comes to installation, should you choose a horizontal or a vertical Air Curtain? The answer depends on your building layout, doorway size, and the type of activity around the opening.
Horizontal Air Curtains
A horizontal Air Curtain is mounted above the doorway and blows air down towards the floor. This is the most common type of installation.
Vertical Air Curtains
Vertical Air Curtains are installed on one or both sides of a doorway, blowing air horizontally across the opening. Units can be stacked on top of one another.
When Horizontal Units May Not Be Ideal
- Very tall openings – Air velocity reduces with distance, so effectiveness drops on high, narrow doors.
- Limited headroom – If there isn’t enough space above the doorway, installation may not be possible.
- Risk of damage – In busy industrial environments with tall vehicles, overhead units may be at risk of impact.
When Vertical Units May Not Be Ideal
- Takes up floor space – Units occupy space on one or both sides of the doorway, which may not suit busy industrial areas.
- Less discreet – More visible than recessed horizontal installations.
- Vulnerable to impact – In industrial settings, vertical units may require protective barriers against vehicles.
Benefits of Horizontal Air Curtains
- Most versatile option – Suitable for a wide range of industrial and heavy commercial entrances.
- Space-saving – Fitted above the door, leaving valuable floor space free for equipment, vehicles, or safety barriers.
- Aesthetically discreet – Can be recessed into ceilings for a cleaner finish where appearance is important.
- Ideal for wide openings – Multiple horizontal units can be installed side by side to cover long doorways.
Benefits of Vertical Air Curtains
- Perfect for tall openings – Effective for warehouse doors, hangars, or industrial entrances where height is an issue.
- No overhead space required – A great solution if there’s not enough clearance above the doorway.
- Scalable performance – Can be stacked for greater height coverage, or paired on both sides for a stronger air seal.
- Special applications – Useful for sealing around obstructions, such as parked vehicles or swing doors.
Choosing the Right Solution
The decision between horizontal and vertical Air Curtains comes down to a balance of space, practicality, and performance:
- Choose Horizontal if your doorway is standard height, you need to save floor space, or you want a discreet installation.
- Choose Vertical if your doorway is tall or narrow, you lack headroom above, or you need additional flexibility for industrial applications.
With options for ambient, electric, or LPHW heating (including coils optimised for heat pumps), SPC’s Air Curtains provide reliable performance and energy savings in every environment.
Get in Touch:
Explore our range of Air Curtain products to find the perfect solution for your specific needs. Our expert team is here to help you select and install the best Air Curtain for your space.
FAN-tastic Support for Our Contractors
At SPC, we take pride in being more than just a manufacturer; we’re a trusted partner to our customers.
Recently, one of our contractors faced a late-stage design change during the busy school summer holidays. With the handover deadline for the new term fast approaching, timing was critical.
All it took was a single call to SPC. Our responsive team quickly organised the revised fan-decks (for our Fan Convectors), which were built by our efficient production team and delivered to the site without delay. Thanks to this fast turnaround, the project was completed and handed over on schedule, ready for the start of the school year.
This is just one example of how SPC works closely with contractors to deliver not only high-quality products but also outstanding service and support when it matters most.
At SPC, we’re committed to building strong relationships with our customers, ensuring they can rely on us to help them meet deadlines, overcome challenges, and achieve successful project outcomes.
Project challenges?
If you’re facing challenges in your project, we have the expertise and solutions to help.
Contact us today for expert advice: Call 0116 249 0044 or email spc@spc-hvac.co.uk
What Makes Unit Heaters Ideal for Warehouses?
Heating large, open spaces such as warehouses, factories, and distribution centres is no easy task. High ceilings, varied layouts, and frequent air changes make it difficult for conventional heating systems to perform efficiently.
That’s where unit heaters come in. Compact, versatile, and powerful, they provide a practical and cost-effective way to heat industrial and commercial spaces.
Why Unit Heaters Work Well in Warehouses
1. Powerful Heat Distribution
Unit heaters use fans to blow heated air across the space, ensuring warmth reaches the working areas, not just the ceiling. This reduces heat stratification and keeps employees comfortable.
2. Flexible Installation
Every warehouse is different. Unit heaters can be wall-mounted horizontally to direct heat across the space, or suspended vertically to blow warm air straight down. This flexibility makes them suitable for a variety of layouts.
3. Energy Efficient Operation
Modern unit heaters are designed to work efficiently, even with low-temperature systems such as heat pumps. This makes them future-proof and aligned with businesses aiming to decarbonise and become more sustainable.
4. Low Maintenance
Compared to larger, more complex systems, unit heaters are straightforward to install and require minimal upkeep, helping to keep downtime and servicing costs low.
5. Cost-Effective Heating
From installation through to day-to-day running, unit heaters remain one of the most cost-effective ways to heat warehouses, storage spaces, and garages.
Why Choose SPC’s CiRRUS Unit Heaters?
While unit heaters in general are ideal for warehouse heating, SPC’s CiRRUS range has been specifically engineered to combine performance, efficiency, and flexibility.
Key Features:
- Available in a range of sizes to suit different mounting heights and heat outputs
- Horizontal units with adjustable louvres, wall-mounted to blow warm air across the space
- Vertical units suspended from the ceiling, directing airflow straight down
- EC axial fan with 0–10V control for precise air movement at any mounting height
- White or black finish available as standard, with other RAL colours on request
- Powder-coated steel casing with a robust design for long-lasting durability
- Control options ranging from simple manual operation to full BMS integration
Pair with the SPC Delta Waterside Controller
Upgrade your commercial heating comfort and efficiency with the SPC Delta Waterside Controller. Ideal for our Air Curtains and Unit Heaters, this controller delivers precision temperature control by directly modulating hot water flow, unlike airside control methods that sacrifice performance.
Key benefits:
- Energy saving via proportional valve control
- Enhanced comfort via precise thermostatic control
- Waterside control – no compromise in the throw of air
- Easy-to-use interface
- Master/slave control available for multiple units
- Volt-free terminals
- BACNET compatibility
For more detailed information, please see our literature section below
The Right Heating Solution for Your Warehouse
SPC has decades of experience in providing heating solutions for industrial and commercial environments. Our CiRRUS Unit Heaters deliver reliable, efficient, and flexible heating for warehouses, factories, and beyond.
Explore the CiRRUS Unit Heater range or speak to one of our experts about your project below.
Reliable Heating for HVAC Systems: SPC Electric Heater Batteries
Looking for a dependable and secure method for heating airstreams in your HVAC systems? SPC’s Electric Heater Batteries are designed to deliver reliable performance, efficiency, and safety across a wide range of applications.
Flexible Heating Solutions
SPC offers a comprehensive selection of Electric Heater Batteries, suitable for both rectangular and circular duct mounting. These units can also be adapted for installation within air handling units (some airway blanking may be required).
- Rectangular models: Fully welded steel construction with a durable grey powder-coated finish.
- Circular models: Manufactured from rolled galvanised sheet steel for strength and longevity.
- Performance range: Duties available from 0.5kW to 400kW, ensuring suitability for projects of all sizes.
Controllable Electric Heater Batteries
For applications that demand precise regulation and enhanced safety, SPC’s Controllable Electric Heater Batteries are the ideal choice.
✅ Stainless steel elements for outstanding electrical safety
✅ High thermal output to maximise efficiency
✅ Thyristor control for accurate temperature management
✅ A flexible design to suit a variety of installations
✅ Rigorously tested for quality and reliability
Download the Latest Literature
Discover the full advantages of SPC Controllable Electric Heater Batteries by downloading our detailed leaflet.
📞 Call us today at 0116 249 0044
📧 Email us at spc@spc-hvac.co.uk
From Design to Install: How SPC Supports Your HVAC Projects
At SPC, we do more than just manufacture HVAC products; we work alongside you to make sure your HVAC project runs smoothly from start to finish.
Whether you’re designing a new build project, managing a refurbishment, or looking for efficient heating and cooling solutions, our HVAC project support is here to help at every stage. From product advice and custom options to installation guidance, SPC provides the support you need.
How We Work With You
Advice at the Start of the Project
Not sure which product is right for the job? Need help with sizing or performance data? Our experienced team can guide you through product selection, technical specifications, and project requirements, so you get the best solution for your space.
Flexible Options to Suit Your Project
All of our products are manufactured to a high standard in the UK, with standard sizes and specifications designed to cover a wide range of applications. However, if you have a specific request, such as a custom colour finish, just let us know. We’ll always do our best to accommodate special requirements where possible.
Fast, Reliable Lead Times
Our UK production means quicker turnaround times and better control over deliveries, helping you keep projects on schedule.
Support Through to Installation
Once the products are delivered, we’re still here. Need advice on installation, commissioning, or maintenance? Our team is always on hand to ensure everything runs smoothly on site.
Why Work With SPC?
- UK Manufacturing – Quality, reliable products with flexible options
- Technical Expertise – Decades of experience across heating and cooling sectors
- Customer-Focused Approach – We support you at every step
Whether you’re an installer, contractor, consultant, merchant, or architect, SPC is here to make your job easier.
Get in Touch
Whether you’re in the early stages of planning or looking for technical advice, our team is here to help.
Talk to us today about your next project.
Radiant Panels Explained: What is Radiant Heating?
When it comes to heating spaces efficiently and comfortably, radiant heating is one of the most effective solutions available.
Unlike traditional systems that heat the air, radiant heating works by warming the surfaces, objects, and people directly. The result is uniform, comfortable warmth with minimal energy waste, making it ideal for a wide range of environments, from schools and offices to healthcare spaces, warehouses, and industrial buildings.
Why Choose Radiant Panels?
At SPC, we manufacture our Thermatile TEN-TWELVE radiant panels here in the UK. These radiant panels offer a high-quality, energy-efficient heating solution with flexible installation options to suit your building design.
Radiant panels also align perfectly with modern low-temperature hot water (LTHW) systems, including heat pumps. As the industry moves towards decarbonisation and net-zero targets, it’s more important than ever to select heating technologies that support renewable energy integration.
Unlike traditional convection systems that rely on higher flow temperatures, radiant panels operate efficiently at lower temperatures, helping to reduce energy consumption and carbon emissions, future-proofing your building against tightening sustainability regulations.
Key Benefits of Radiant Panels:
- Quick heat-up times – Rapidly bring spaces up to temperature
- Uniform comfort – No cold spots or drafts
- Virtually maintenance-free – No moving parts or complex components
- Improved air quality – Minimal air movement reduces the spread of dust and allergens
- Low-temperature compatibility – Perfect for heat pumps and renewable heating systems
- Flexible installation – Available in ceiling grid, free-hanging, wall-mounted, or plasterboard options
A Future-Proof Heating Solution
Radiant panels are an excellent choice for decarbonisation projects and energy-efficient building designs. Whether you’re refurbishing an existing space or planning a new development, SPC can help you specify the right solution, with short lead times and UK manufacturing support.
Get in Touch
Want to learn more about radiant heating panels or discuss your next project? Fill in the form below and we’ll reply to you as soon as we can!
Why Summer Is the Smart Time to Upgrade Your Unit Heaters
Thinking about heating when it’s hot outside? It’s smarter than you think. Summer is a great time to plan ahead for winter by upgrading or installing high-performance Unit Heaters in your building.
At SPC, our CiRRUS Unit Heaters are engineered to deliver powerful and efficient warm air heating, ideal for warehouses, factories, garages, and other commercial or industrial spaces.
What Makes SPC CiRRUS Unit Heaters Different?
Designed for Demanding Spaces
CiRRUS Unit Heaters are purpose-built for large-scale environments such as distribution centres, workshops, and plant rooms. Horizontal and vertical mounting options provide flexibility to suit your layout.
High Performance, Low Fuss
Available in water-heated and electric versions, units deliver up to 50.9kW of heat (with 3-row coils) and are suitable for boiler and heat pump systems, including low-temperature operation.
Smart Airflow Control
EC fans with 0-10V control allow full adjustment of airflow and noise levels. Adjustable louvres provide precise air distribution, maximising comfort across your space.
Built to Last
Heavy-duty steel casing, corrosion-resistant powder coating, and copper/aluminium coil construction ensure long-term durability with minimal maintenance.
Flexible Mounting Options
Wall brackets, ceiling suspension rods, or unistrut systems make installation simple and adaptable.
What Makes SPC Unit Heaters Different?
Avoid the Rush
Don’t wait for cold weather and lead time delays.
Plenty of Access
Install or replace heaters while spaces are quieter.
Energy Planning
Optimise system performance ahead of winter bills.
Tailored to Your Needs
- Sizes from Ci5 to Ci8 to suit any building
- Heat outputs from 5kW to nearly 51kW
- Compatible with BMS systems and zonal controls
- Optional 4-way diffusers and IP-rated electrical boxes
Looking to Futureproof Your Building?
SPC’s CiRRUS Unit Heater range supports modern, low-carbon heating systems, and our team can advise on the best coil configuration for low-temperature heat pumps or conventional boilers.
Contact our technical team today or browse the full CiRRUS range on our Unit Heaters page.
Oldham Old Library Refurbishment: Preserving the Past with Modern Comfort
SPC is proud to have supported the refurbishment of the iconic Oldham Old Library, supplying a selection of Fan Convectors and Belgravia Tilevector Duo units in partnership with Tilbury Douglas.
First opened in 1883, the Grade II listed Oldham Old Library has been a landmark in the town for well over a century. As part of a major restoration project, the building is being updated for future use, carefully balancing modern comfort with the preservation of its historic features.
Our Fan Convectors and Tilevector Duo ceiling heaters provide discreet, efficient heating, making them ideal for heritage refurbishment projects where maintaining the building’s aesthetic is essential. These solutions deliver effective heating without compromising the architectural integrity of the space.
It’s great to see our products now installed and contributing to the next chapter of this important community landmark.
Looking to Upgrade Your Heating System?
Whether you’re working on a historic building, a modern space, or anything in between, SPC Belgravia Fan Convectors offer a perfect blend of tradition, efficiency, and comfort. Contact us today and let’s discuss how we can help you create a space that feels as good as it looks!
Call the SPC sales team on 0116 249 0044 or email spc@spc-hvac.co.uk
Pizza Day at SPC – A Slice of Appreciation
It’s been a busy few months here at SPC, and we wanted to take a moment to say thank you to the whole team for their continued hard work and commitment.
We held a Domino’s Pizza Day, a small gesture to show our appreciation for everything the team does, day in and day out. From the shop floor to the sales office, everyone plays a part in keeping things moving, and it was great to get together, enjoy a few slices, and take a well-earned break. The pizzas didn’t hang around for long!
We’re proud of the work being done across the business, whether it’s delivering on major projects, supporting customers, or pushing forward with our product range, from coil heat exchangers and trench heating to air curtains and unit heaters.
Thanks again to the team, your efforts really do make a difference.
If you’re interested in learning more about what we do or how we can support your next project, take a look at our product range or get in touch with the team. We’d love to hear from you!
Why SPC’s Fan Convectors Are Ideal for School Refurbishment Projects
When it comes to school refurbishments, time and reliability are key.
At SPC, we understand the challenges that come with upgrading heating systems in educational environments, especially during the summer holidays or half-term breaks when deadlines are tight.
That’s why our Belgravia Fan Convectors are a popular choice for schools across the UK.
Why Choose SPC Fan Convectors for Refurbishment Projects?
Fast Installation
School refurbishment projects often come with strict timelines. Our Fan Convectors are designed for quick, easy installation, helping you meet your deadlines without compromising on quality.
Compatible with Low-Temperature Systems
With many schools moving towards more sustainable heating, SPC Fan Convectors work seamlessly with low-temperature hot water (LTHW) systems, including those fed by heat pumps or condensing boilers.
View our project at Towers School & Sixth Form Centre, Dover, where they used our enhanced and low flow coils paired with their heat pump system.
Quiet Operation
Learning environments need quiet spaces. Our Fan Convectors operate at low noise levels, ensuring classroom comfort without disruption.
Space-Saving Design
Fan Convectors offer high output in a compact footprint, freeing up wall space and providing more flexible options for school layouts.
Our Belgravia Supreme Fan Convectors feature an ergonomically rounded design without any sharp corners, making them a great choice for environments that prioritise safety and appearance.
Made in the UK
All of our Fan Convectors are manufactured in Leicester, UK, using high-quality materials, ensuring long-lasting performance and reliable support when you need it.
Talk to Our Team Today!
If you’re planning a school refurbishment or need advice on selecting the right heating solution, our team is here to help.
Email: spc@spc-hvac.co.uk
Call: 0116 249 0044
Or contact us below to discuss your project.
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