The Thermopanel TP21 is one of the most proven and highly regarded panel radiators on the market for hydronic (water-based) heating systems. The model features a double-panel design with a single convection fin, striking an optimal balance between efficient heat output and a compact, stylish profile. Thanks to its well-engineered construction, the Thermopanel TP21 is equally well-suited for the renovation and modernization of older properties as it is for new construction projects, including private homes and commercial premises.
Choosing the Thermopanel TP21 means opting for a reliable heat source that ensures even heat distribution and pleasant comfort in every room of your home. The radiator’s integrated valve arrangement and reversible design offer great flexibility for pipe routing, simplifying installation for both professional installers and DIY enthusiasts. Explore our range of Thermopanel TP21 radiators—available in various heights and lengths—to find the perfect dimensions for your heating requirements.
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TP21 300 VÄNDBAR RADIATOR M V4
Thermopanel V4 bredder, välj nedan 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1600, 1800, 2000, 2300, 2600 och 3000 mm
6607062
1 753 kr / pc.Add to favorites- Stock status
- Lev. normalt inom ca 6 till 10 vardagar
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TP21 400 VÄNDBAR RADIATOR M V4
Thermopanel V4 bredder, välj nedan 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1600, 1800, 2000, 2300, 2600 och 3000 mm
6607077
1 862 kr / pc.Add to favorites- Stock status
- Lev. normalt inom ca 2 till 5 vardagar
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TP21 500 VÄNDBAR RADIATOR M V4
Thermopanel V4 bredder, välj nedan 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1600, 1800, 2000, 2300, 2600 och 3000 mm
6607093
1 881 kr / pc.Add to favorites- Stock status
- Lev. normalt inom ca 2 till 5 vardagar
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TP21 600 VÄNDBAR RADIATOR M V4
Thermopanel V4 bredder, välj nedan 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1600, 1800, 2000, 2300, 2600 och 3000 mm
6607109
2 064 kr / pc.Add to favorites- Stock status
- Lev. normalt inom ca 2 till 5 vardagar
Everything you need to know about the Thermopanel TP21
The Thermopanel TP21 is a classic Swedish radiator model, engineered for a long service life and high energy efficiency. The designation "TP21" describes the radiator’s construction: two panels (water-carrying elements) with a single convection fin positioned between them. This design provides a significantly higher heat output than a single-panel radiator (Type 11), while extending less from the wall than a more robust double-convector radiator (Type 22).
Advantages of the Thermopanel TP21
- High heat output in a compact format: The combination of radiant heat and convection heat ensures rapid warming and a stable room temperature, without taking up unnecessary floor space.
- Flexible installation: Thanks to its reversible design and integrated valve assembly, it can be easily connected from the right or left side, as well as from below.
- Timeless design: Its discreet profile blends naturally beneath windowsills and along walls in both modern and traditional interiors.
- Easy maintenance: The well-thought-out construction facilitates regular cleaning, contributing to a healthier indoor climate.
Important considerations before purchasing
Before placing an order, it is essential to determine the room's heat loss and the available space:
- Dimensions and placement: Check the height beneath the windowsill to ensure that air circulation is not obstructed. The TP21 is available in standard heights ranging from 300 mm to 600 mm to suit various window heights.
- Heat output requirements (Watts): Select the radiator length based on the room size, level of insulation, and the supply temperature of the heating system. A correctly sized radiator reduces energy consumption and eliminates cold drafts.
- Connections and accessories: Check existing pipe dimensions and determine whether you need to add a thermostat, valve insert, or specific brackets for wall mounting.
Thermopanel TP21 is the obvious choice for those seeking proven operational reliability, quiet operation, and stable thermal comfort tailored to Nordic conditions.