PTC vs IR Bathroom Heaters – What’s the Difference?
Nobody wants to freeze their bum off getting out of the shower!
Ceiling-mounted bathroom heaters fix that fast and the two main technologies you will find today are infrared (IR) and PTC. Both do the job, but they work in very different ways. Whether you’re installing in a new build or replacing an older unit, understanding the differences can help you choose the right option for your customer.
Infrared Heaters – Fast Heat, Bright Light
Infrared bathroom heaters work by converting electricity into radiant heat, warming objects and people directly rather than heating the surrounding air. The feeling is similar to standing in the sun (without the UV). They are known for providing almost instant warmth and a bright glow, making cold mornings more bearable.
IR heaters are ideal for short bursts of use, particularly in bathrooms where people are in and out quickly. They work using special globes or IR tubes. Just note that the heat is directional! Meaning it won’t warm the whole room evenly, just what’s in its line of sight.
PTC Heaters – Warm the Room, Not Just the Skin
PTC stands for Positive Temperature Coefficient, referring to the type of heating element inside the unit. These heaters use a fan to push warm air throughout the room, gradually raising the ambient temperature.
Unlike standard coil-based fan heaters, PTC elements self-regulate – meaning the hotter they get, the more they resist additional current. This reduces the risk of overheating and improves safety and efficiency. It’s the same technology used in medical and commercial products like heated beds or clothing.
PTC bathroom heaters don’t emit any light and are typically visible on the ceiling as a discreet vent. They suit modern bathroom designs and create a more consistent warmth across the room – though they take a few minutes to reach temperature.
When to Choose Each Type
| Infrared | PTC Fan Heater | |
|---|---|---|
| Heat Type | Radiant - heats surfaces of objects and people | Heats air |
| Warm Up Time | Instant | Moderate |
| Power Draw | Great for short use | Better for longer use |
| Light Emission | Bright | None |
| Sound | Silent | Low (fan noise) |
| Maintenance | Globe/tube replacements | None / Clean vents if necessary |
| Appearance | Exposed globes or panel | Flush vent grille |
Infrared is a solid option when your customer wants fast heat and doesn’t mind a bit of brightness. They’re often used in ensuites or smaller bathrooms where usage is brief and targeted warmth is enough.
PTC heaters, on the other hand, are a great fit for family bathrooms or daily-use spaces. The warmth fills the room, the look is cleaner, and the safety benefits are a bonus. Our Atom Air Santorini uses PTC technology and is a go-to choice for contractors looking for a modern, effective, and no-globe solution. All of Atom Air’s PTC heaters can run both exhaust and heater functions, unlike some competitor products on the market.
Final Thoughts
Both heater types have their place, but if you are after quiet operation, a modern finish, and full-room comfort, PTC is pretty hard to beat. Otherwise if you are replacing an old unit with an upgrade, our affordable quality 3-in-1 heaters do the job well.
Explore Atom Air’s full range of bathroom heaters, including the PTC-powered Santorini, available through quality wholesalers Australia-wide. Every model comes backed by a 3-year in-home warranty.
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