The first cold snap of autumn always seems to land on a Saturday. You have people over, the sun drops behind the fence by six, and within twenty minutes everyone has drifted back inside. A built-in electric outdoor heater is what stops that happening. Mounted into the alfresco ceiling, out of the way, it warms the people at the table rather than the open air above them.
This guide covers how to size and place ceiling-mounted electric strip heaters in a covered alfresco, verandah or courtyard: output, mounting height, and exactly where the licensed-electrician line sits. Every model mentioned comes from our outdoor heaters range, and every figure quoted comes off the product page it belongs to.
Start here: hard-wired heaters are electrician work
A hard-wired outdoor heater must be installed by a licensed electrician. This is not a line to skim past. These units draw serious current, they sit in a space that gets wet, and they are usually wired into a dedicated circuit rather than plugged into a power point.
The product pages say so plainly. The Heatstrip Classic Electric Wall Mount Heater 3200W ($799) is listed as requiring a licensed electrician, and so is the 3600W Max. Book that trade in before the heater arrives, not after.
Some smaller models are a different story. The 1800W and 2400W Classic units, and the 2400W Elegance, are listed as easy DIY installation for a straightforward surface mount. The moment you hard-wire one, recess it into a ceiling, or add a wall controller, you are back in licensed territory.
How to size an electric outdoor heater for your alfresco
Here is what most sizing advice gets wrong. Electric strip heaters are radiant, not convection. They warm the people and surfaces the heat lands on, rather than a volume of air that escapes out the open side of your alfresco. That makes the usual kilowatt-per-square-metre rule of thumb, borrowed from indoor heating, close to useless outdoors.
What actually decides the result is the footprint of warmth under each unit, which depends on output, mounting height and how exposed the space is. Work from the manufacturer's coverage data for the specific model and let your electrician confirm the layout against the installation manual.
Output is the lever you do control. The Heatstrip Classic Electric Wall Mount Heater 2400W ($699) suits a protected alfresco, pergola, verandah or cafe where people sit for a while. Its heat is gentle and radiant rather than a blast, which is what you want over a dining table. Step up to 3200W for a larger protected area.
Exposed areas are a different problem. Where a covered space is open on two or three sides, or the ceiling is high, a gentler heater simply gets lost. The Heatstrip Max Infra-Red Heater 3600W - White ($999) is built for those conditions: high ceilings, exposed alfresco areas, verandahs, courtyards and warehouses. Its low-glow, shatterproof Incoloy element means nobody squints into a bright orange bar all evening.
Mounting height, ceiling height and building it in flush
Mounting height is where alfresco heating quietly goes wrong. Too low and the heat is uncomfortably concentrated on whoever sits directly underneath. Too high and it spreads so thin that nobody feels much at all.
The one place we can quote real numbers is the flush-mount hardware, because its product page states them. The Flush Mount Enclosure for Classic 2400W ($329) lists an ideal mounting height of 2.3 m to 2.5 m, with a maximum ceiling height of 2.7 m in an enclosed outdoor area. Go beyond that maximum and heater performance may drop off. It is a one-piece unit that suits plaster or timber-lined ceilings.
For every other model, follow the installation manual and your electrician's advice on mounting height and clearances rather than a figure from a guide. Clearance to combustible surfaces and timber battens varies by model, and it is the one specification you never want to guess.
Recessing the heater is worth the extra step in a finished alfresco. A flush unit reads as part of the ceiling rather than equipment bolted underneath, and it keeps headroom clear under a pergola or patio roof.
The Heatstrip range compared
Four models cover most Australian alfresco situations. Narrow the field here, then confirm with your electrician.
| Model | Output | Installation | Best suited to |
|---|---|---|---|
| Classic 2400W | 2,400W | Listed as easy DIY | Protected alfresco, pergola or cafe seating |
| Classic 3200W | 3,200W | Licensed electrician | Larger protected areas |
| Elegance 2400W | 2,400W | Listed as DIY | White ceilings where it should disappear |
| Max 3600W | 3,600W | Licensed electrician | High ceilings, exposed courtyards, warehouses |
Colour matters more than people expect on a ceiling install. The Heatstrip Elegance Electric Heater 2400W - White ($749) is finished in off-white for exactly this reason, so it vanishes against a white-painted patio ceiling. It is corrosion-resistant for tough outdoor environments as well.
Control is the last piece. A Heatstrip wall controller gives high, medium and low heat plus a timer from one point on the wall. A single controller can drive more than one heater, provided total current stays inside its 16 A rating. It has to be installed by a licensed electrician too.
What this means in Australian conditions
Autumn and winter evenings are the whole use case, and they hit differently around the country. In Melbourne, Adelaide, Hobart and Canberra a covered alfresco can be genuinely cold from March through to October. In Brisbane and Perth the season is shorter, but the shoulder months still push people indoors early.
Electric radiant heaters have one clear advantage over open flame here. There is no gas bottle to swap, and nothing that a total fire ban day affects. That matters under a timber-lined ceiling or close to a fence line. If you have read our guide to patio heater safety basics, this is the option that takes the flame out of the equation.
Apartments and townhouses add a layer. Anything hard-wired, or fixed to a ceiling or common-property wall, usually needs approval from your strata or body corporate before work starts. Rules vary by state, council and scheme, so check with your building manager and local authority before booking the electrician.
Cafes and venues face the same question at a bigger scale. Commercial installs usually mean several units on a shared controller, a dedicated circuit, and a layout planned around where customers actually sit and where the joists allow.
Electric outdoor heaters — frequently asked questions
Do I need an electrician to install an electric outdoor heater?
Yes, for any hard-wired unit. Several models here, including the Classic 3200W and the Max 3600W, state on their product pages that a licensed electrician must carry out the installation. Smaller models listed as easy DIY installation cover a simple surface mount only.
What mounting height should a ceiling-mounted strip heater sit at?
It depends on the model, so follow the installation manual. The flush-mount enclosure for the Classic 2400W lists an ideal mounting height of 2.3 m to 2.5 m and a maximum ceiling height of 2.7 m in an enclosed outdoor area. For surface-mounted units, your electrician sets the height against the manufacturer's clearances.
Are electric strip heaters better than gas for a covered alfresco?
For a covered, semi-protected area, electric radiant heaters are usually the easier answer. There is no bottle to refill and nothing affected by a total fire ban day. Gas still wins on portability and in fully open spaces with no ceiling to mount to.
Can one heater warm a whole outdoor dining area?
Often not, and that is normal. Radiant heat falls away with distance, so a long table or an L-shaped lounge generally needs two or more units spaced along it. Plan the layout around the seating first, then work out circuit capacity with your electrician.
Shop the range
Whether you are heating a small covered courtyard or fitting out a venue, the full heating and fire range covers electric strip heaters, controllers and flush-mount enclosures. We deliver Australia-wide, delivery is free on orders over $100, and most orders are dispatched within 3 to 10 business days. Installation is available on request, which is worth asking about while you are organising the electrician.
