The first step in choosing a towel radiator for your bathroom is to understand how your home is heated. Whether you have a combi boiler, communal heating in your building or a heat pump that heats water, you can choose a Radiva hydronic towel radiator to suit your heating system and bathroom needs.
These towel radiators work on the same basic principle as the other radiators in your home. Hot water from the heating system circulates inside the towel radiator, warming its metal surface and releasing heat into the bathroom. This helps heat the room and dry the towels hung on it.
The water supplied to the towel radiator circulates in the heating system. It is not connected to the hot water supply for taps or showers. A standard hydronic model does not itself need an electrical connection; it receives its heat from the heating system.
Radiva lists the heat output of every model in kcal/h, watts and BTU. Each product also shows the approximate floor area it can heat, in square metres. This makes it easier to compare models by heating capacity as well as design.
Identify the Heating System in Your Home
| Your home’s heating setup | Section to read |
|---|---|
| I heat my radiators with a combi boiler | Use with a combi boiler |
| My flat uses a communal heating system | Use with communal heating |
| My heat pump heats water in the heating circuit | Use with a heat pump |
| I only use air conditioning or electric heaters | Check whether the bathroom has water-based heating pipework |
If You Have a Combi Boiler
If you heat your radiators with a combi boiler at home, the principle of a hydronic towel radiator will be familiar. Your boiler heats the water in the heating circuit. This water can supply your bathroom towel radiator alongside the other radiators.
If the pipework is already installed, check the pipe centres (AKS) and connection compatibility first. Look for Radiva models that match the distance between the centres of your existing connections. A step-by-step guide to measuring this distance appears below.
The towel radiator warms up when hot water reaches it. A combi boiler in summer mode, supplying only taps and showers, will not normally heat a towel radiator connected to the heating circuit. For year-round use, explore Radiva electric towel radiators or ask Radiva whether your chosen model is suitable for dual fuel operation.
If Your Building Has Communal Heating
If your flat has no individual boiler and is heated by a shared system serving the building or development, you can use a hydronic towel radiator by choosing a model compatible with that system. Heat is supplied from the communal heat source to your bathroom through the heating pipework.
The towel radiator heats up when hot water is supplied to its circuit; the building’s heating arrangements may determine operating periods and hours. System pressure, operating temperature and connections must match the chosen model’s specifications. Your building management or maintenance team can provide this information.
If You Use a Heat Pump
If your home is heated by a heat pump, first check how the system distributes heat. An air-to-water or ground-to-water heat pump heats the water in the heating system and can supply radiators, underfloor heating and appropriately selected towel radiators.
Water temperature is a key factor in product selection. In many installations, heat pumps operate with lower heating water temperatures for efficiency. As the water temperature falls, the same towel radiator delivers less heat to the bathroom.
The kcal/h, watt and BTU ratings and approximate heating area on Radiva product pages provide a starting point for your choice. With a heat pump, you must also consider the temperature conditions to which these figures relate. At your system’s flow and return temperatures, the towel radiator must deliver enough heat to meet your bathroom’s needs.
For example, a towel radiator that is adequate in a home with a boiler operating at a higher water temperature will not deliver the same heat with a heat pump running at a lower temperature. Reviewing the product’s approximate heating area with Radiva for your heat pump system will help you choose the right capacity.
If your heat pump is an air-conditioning system that only blows warm air, it cannot supply a hydronic towel radiator on its own. There must be a water-based heating circuit to which the towel radiator can connect.
Can It Be Used with Underfloor Heating?
Yes, with a suitable system design. However, the water temperature and circuit layout of underfloor heating affect how the towel radiator performs. A heating specialist should assess the connection circuit, required water circulation and heat output at that temperature. Having underfloor heating does not mean that every towel radiator will heat the bathroom adequately.
Information to Share When Choosing for a Heat Pump
Your heat pump’s make and model, the planned flow and return temperatures, your bathroom dimensions and details of any existing towel radiator will help with product selection. If you do not have this information, ask your installer or maintenance provider.
Check Pipe Centres First If the Pipework Is Installed
Compatibility with existing pipework is one of the most important points when choosing a towel radiator. Pipe centres matter just as much as heat output, model and colour. If the pipework is ready, start by looking for Radiva models with matching connection spacing.
Pipe centres (AKS) are the distance between the centres of the two points where the towel radiator connects to the pipework. This is not the product’s overall width. Models of the same width may have different connection spacing, so use the pipe centre dimension shown in the technical drawing for your chosen product.
How to Measure Pipe Centres
- Locate the centres of the flow and return pipes or connection openings that will connect to the towel radiator.
- Use a tape measure to measure from the exact centre of one connection to the exact centre of the other. For example, a measurement of 45 cm means the pipe centres are 450 mm apart.
- Compare your measurement with the pipe centre dimension for the specific size of the Radiva model you plan to buy.
If valves are already fitted, check their type and connection orientation too. If you are unsure of the measurement, share a photo of the pipework and your measurement with Radiva live chat. Confirming pipe centres and connection compatibility before ordering is essential to avoid additional plumbing work and unnecessary costs.
More Freedom If the Pipework Is Not Yet Installed
If new pipework will be installed, or existing pipework adapted to your chosen towel radiator, you have much more freedom in model and size. Radiva’s extensive range of models, sizes and colours lets you choose a towel radiator to suit your bathroom’s style and heating needs.
First confirm the model and product size. Then give your installer the pipe centre dimension, connection orientation, valve arrangement and mounting height for that product. Pipe outlets should be positioned according to the product’s technical dimensions.
Radiva Is Here to Help You Choose
You can get immediate answers to your questions through live chat at radiva.com during many hours of the day. Contact us for help checking your existing pipe centres, finding a suitable model or exploring size and colour options.
Choose the Right Towel Radiator with Radiva Product Details
For every model, Radiva provides heat output in kcal/h, watts and BTU, together with the approximate heating area in square metres. Use these details together to choose the right model for your bathroom.
How to Read Heat Output Ratings
Kcal/h and watts express heat output in different units. In heating capacity ratings, the figure commonly referred to as BTU means hourly heat output, or BTU/h. These figures describe the same capacity in different units, rather than separate features. Compare models using the same unit and temperature conditions. The watt rating of a hydronic towel radiator is not its electricity consumption.
Approximate Heating Area Makes Selection Easier
First measure the length and width of your bathroom to calculate its approximate floor area. Compare this with the approximate heating area on the Radiva product page. Check the capacity for the specific size of the model you like; different sizes of the same design may have different heat outputs.
The square-metre figure is a practical selection guide. Actual heating needs vary with insulation, ceiling height, windows, external walls, local climate and heating water temperature. For heat pumps and underfloor heating in particular, consider this figure alongside the system’s operating temperatures.
What to Check Before Buying
Decide whether the towel radiator will be the bathroom’s main heat source or mainly help dry towels. With existing pipework, confirm pipe centres and connection compatibility first. Also check wall space, product dimensions, valve position and the heating system’s pressure and temperature.
Frequently Asked Questions
Will It Heat the Bathroom Too?
Yes, if its capacity is suitable for the bathroom’s heating needs and the system’s water temperature. Radiva’s approximate heating area helps narrow down your options; share your specific conditions with Radiva to confirm your choice.
Will It Work in Summer?
A standard hydronic towel radiator does not actively heat when no hot water is supplied by the heating system. For summer use, consider Radiva electric towel radiators.
Does It Need a Power Socket?
A standard hydronic towel radiator does not itself need a power socket; it receives heat from the heating system. Electrical and dual fuel options have different connection requirements.
Can I Use It Electrically Later?
Ask Radiva whether your chosen model is suitable. Dual fuel operation requires a compatible product, electric heating kit and appropriate installation conditions.
Let Us Help You Choose a Radiva Towel Radiator
Share your bathroom dimensions, a photo of the pipework, the pipe centre measurement if available and your preferred Radiva model through live chat. We can help you assess heat output, approximate heating area and connection compatibility together.
You can get immediate answers through Radiva live chat during many hours of the day, or call +90 216 469 8406 during business hours.
