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Dimplex AC3N 3.0KW Over Door Heater, 3kW Warm Air Curtain Surface Mounted Heater

Model No. AC3 by: Dimplex
Availability: Normally In Stock


List price £227.40
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This is the Dimplex AC3N commercial heater, a 3.0kW over-door heater providing a warm air curtain above a single or double door.

It is ideal for shops, retail, offices, and any small doorway, giving a "warm welcome" feeling to the customers.

Great for the colder months of the year, when the opening of the shop door brings in cold air, the Dimplex AC3N gives powerful and effective heating above the entrance, allowing the door to remain open for longer periods of time.

Dimplex AC3N 3.0KW Over Door Heater - Features and Benefits

  • Designed to provide a warm air curtain for a single doorway - localized heating around open doors.
  • Can be used with or without the aluminium ceiling grille.
  • Safety protection: electrical hold reset cut-outs.
  • Curved body: ideal for modern interiors.
  • Provides powerful and effective heating above the entrance.
  • Ideal for any situation where a high-level fan heater is required (up to 2.3m).
  • Adjustable airflow directions.

Dimplex AC3N "Warm Air Curtain" - Technical Specs

  • Heating element: Wire stitched element
  • Blower Units: Tangential blowers
  • Control Type: On-board controls
  • Control functions: On/off, Two heat settings (Half heat & Full Heat)
  • Heat output: 1.5/3.0 kW
  • Voltage: 230V 1PN
  • Installation: wall bracket is included
  • Construction / Finish: Pressed steel case with powder coat finish
  • IP Rating: IP21 rated heater, ideal for indoor use
  • Dimensions: length 605mm, height 200mm, depth 135mm
  • Air velocity: 6.2m/s
  • Noise: 50.2dB(A)
  • Weight: 5.1kg
  • Safety: 2 x electrical hold reset cut-outs
  • Optimum mounting height: 1.8m — 2.3m 
  • Cable: not supplied
  • Approvals: CE, BEAB
  • Warranty: 12 months

Note: Some images and pictures are for reference only. The item may differ from the image/picture due to manufacturer's change. Should you require the exact item in the picture, please call or email us to enquire.

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Overhead Heaters and Air Curtains insure Heating and Cooling in Retail / Shops

A major requirement for all high street shops is that they should have reliable heating systems - and warm air curtains help with this. This will maintain a comfortable working environment for the staff and will provide a warm welcome for customers. Occasionally, there is also a need to protect stock against the negative effect of cold temperatures. For instance in a supermarket it is imperative that certain areas of the store remain at the correct temperature so the food doesn’t spoil. In the cases of shops and small rooms, wall and floor space are at a premium - meaning it is always in use. So the preferred location for heaters is wall-mounted at a high level or on the ceiling. BN Thermic has been providing quality overhead heating for decades now to a wide variety of property types. In this article, Sparks will look at the best options for small shops and showrooms when it comes to heating their premises. Why overhead heaters are the perfect solution for commercial premises High level, wall-mounted heaters are commonly used for space heating in many smaller shops. However, in order to allow for the free use of wall space and to provide improved heat distribution, larger shops will require ceiling-mounted heaters. In venues or shops where a suspended ceiling has been installed, a range BN Thermic heaters are available to fit directly into a 600mm x 600mm grid pattern. These heaters provide a pleasant welcome to customers and a concentrated boost to the air temperature. This offsets the heat loss associated with ‘open door’ policies for stores. Sparks sell a range of BN Thermic overhead heaters, which would be a smart purchase for shop owners or showroom managers. The 4.5kW ‘Egg Crate’ overhead heater will prove to be an excellent addition to any commercial property. Your customers will be delighted as they stroll under its comfortable heat output and warm airflow. Air curtains: an overhead heating solution for all seasons Air curtains are an overhead heating option that will satisfy the needs of shop or showroom owners. They are mounted above doorways and produce a high-velocity air stream that creates an ‘invisible barrier’ between indoor and outdoor climates. Air curtains will help reduce heating costs in winter and air conditioning costs in summer, without reducing foot traffic. In cooler conditions, the ‘chill factor’ linked with high-velocity air streams can be troublesome and uncomfortable for customers. Air curtains negate the chill factor with electric heating elements which warm the airstream and contribute to a building’s heating requirements. Air curtains also have a health benefit, as they reduce the ingress of pollutants and insects. Sparks have some of BN Thermic's excellent warm air curtains in stock. They come in 9kW and 18kW versions, depending on the velocity stream you find most convenient and the size of the door entry (single or double). Advantages of overhead heating in Retail and Shops Overhead heaters are perfect for the retail industry, as they provide both cold and warm air to comfort your customers and employees. Overhead heaters have the following advantages for your business or showroom: They put less of a burden on any existing heating systems. This results in less usage, and the improved lifespan and functionality of your current heating system. They reduce building running costs. Traditional heating systems in commercial units can be inefficient - this is especially true in large premises. Commercial air curtains can keep harmful pollution, chemicals and smells away from your customers, staff and valuable products. Using less energy to heat your building will reduce the amount of CO2 emissions produced. They increase visibility for customer safety. A closed or obstructed glass door can pose a hazard to staff and customers. This could result in expensive equipment being damaged or customer lawsuits. They increase customer comfort. Keeping customers happy is important to all businesses. Cold premises keep customers away and may affect the productivity of your staff. An air curtain will help create a friendly atmosphere and will attract the public - it could also keep them inside for longer. Access for the disabled and trolleys. Disabled people and/or customers with trolleys can find opening and closing doors difficult. Commercial air curtains provide great accessibility for members of the public with their open door capabilities. Overhead heating: the perfect heating solution for your commercial property Overhead heaters and commercial properties make for a perfect combination. They provide all kinds of advantages as outlined above, and you will be happy to know we sell a variety of them here at Sparks. Their adaptability to the outdoor environment and subsequent savings would satisfy the needs of any shop owner or showroom manager. Using a steady stream of air to form a protective barrier, air curtains block out cold weather, pollution, bad smells and insects. This leaves you with a warm and pleasant environment inside.

How Powerful a Heater Do We Need to Make The Office a Little Bit Warmer?

In the long process of updating our store to a snazzy new system, we've been wondering about some of the things we sell. How is an ES lamp base different from an E27, and who came up with that system in the first place? How low can we hang a ceiling pendant before it becomes effectively useless? Today, we wondered: how powerful a heater would we need to make this office a little bit warmer? The answer turned out to be simpler than we thought, and then it got more complicated (see a picture presentation of our affordable heating solutions for office). More Square Footage = More Wattage Although your new heating system has thermostatic controls, that doesn't mean it will have sufficient power to heat the room to that temperature. Larger spaces need more heating power (and vice versa). for non-industrial purposes, it's best to think of it in terms of wattage per square foot. Here's a quick and rough guide to the power needs of different-sized rooms (based on generally accepted stats and technical specs for Convector Heaters). Area of Room (square feet) Recommended Heater Wattage 50ft² 350W 100ft² 900W 150ft² 1350W (1.35kW) 200ft² 1800W (1.8kW) 300ft² 2700W (2.7kW) 400ft² 3600W (3.6kW) 500ft² 4500W (4.5kW) 800ft² 7200W (7.2kW) 1000ft² 9000W (9kW) (Source) If you're heating a whole space, this is a handy reference, but whole-room heating isn't always the whole picture in every application. In some cases, other methods can replace or complement a space's general heating. Some Relatively Uncommon Heating Applications Over-door heaters such as the Dimplex AC3N, or "air curtains," are often used in commercial and retail spaces to combat cold draughts from open doors - and to keep out insects and other pests! Similarly, a floor heater such as the FFIH recessed floor heater can help keep out draughts that infiltrate a room from underneath the door.This particular fitting doesn't even require an under-floor air supply; there are inlets and outlets on the grille face itself. However, if it will face a lot of foot traffic, make sure it won't crack or break. Looking to more domestic applications, the plants in a greenhouse will often succumb to freezing temperatures in the winter, but these spaces do not require the same level of heating as, say, a similarly-sized bathroom. In these cases, a thermostatic "frost protection" heater will heat the space to a relatively low temperature to keep those plants healthy. These are just a few examples, of course, and everyone reading this will have different requirements that can't be summed up in a blog post. If you have questions, why not leave a comment or better yet: pop into our showroom.


Sparks Direct delivers via courier to the UK only; the standard delivery charge is £6 + VAT for all orders under £100 + VAT. If your order is over £120, you get free delivery (unless there's a special delivery charge for the items you wish to order or you're in shipping zone C or D). Full details for shipping charges can be found via Terms and Conditions.

If the items you order are in stock and the order is placed before 1.00pm, delivery can be made within 1-2 working days. If the items are not in stock, we will inform you via email how long it will take or ask for your confirmation if there's a long lead time.


We offer 30-day returns for unwanted items - please email us to request a returns number which will need to be quoted when the items are returned. For faulty items or items damaged in transit, please advise via email, and an appropriate returns number will be provided. Full details concerning returns and refunds can be found via our Terms and Conditions.