“Underfloor heating is comfortable but expensive; radiators are cheap but they will do” is the most common and the most incomplete summary of this subject. The real picture changes with the building, the way it is used and the heat source — and sometimes the right answer is to use both together.
Comfort: two different sensations of warmth
A radiator heats the air starting from the wall it sits on; the warm air rises and the room heats “from the top down”. Floor level is usually the coolest zone. Underfloor heating does the opposite: the whole floor works as one wide, mildly warm surface, the heat starts at your feet and spreads evenly through the room. A room at 20-21°C with underfloor heating feels the same as a room at 23°C with radiators — and those 2-3 degrees are fuel saved directly.
Efficiency: the mathematics of low temperature
A radiator typically wants water at 55-70°C; underfloor heating runs at 30-40°C. As the water temperature falls, a condensing boiler condenses more effectively and the COP of a heat pump climbs. That is why, if you are installing a heat pump, underfloor heating is not a “preference” but a precondition of efficiency. Even paired with a combi boiler, underfloor heating delivers measurable savings over a season.
Cost and feasibility
| Criterion | Underfloor heating | Radiators |
|---|---|---|
| First cost | Higher (screed + pipe + manifold) | Lower |
| Retrofitting an existing home | Needs floor height and renovation | Installed without renovation |
| Running cost | Low (low water temperature) | Medium |
| Response time | Slow to warm, holds for a long time | Warms fast, cools fast |
| Appearance | Invisible | Takes up wall surface |
The difference in response time has to match how the space is used: in homes that are lived in all day the thermal inertia of underfloor heating is an advantage; in spaces used for a couple of hours a day the speed of a radiator is what you want.
Using both: the smartest solution on most projects
Underfloor heating in the living room and bedrooms, a towel radiator in the bathrooms, radiators in rarely used spaces — this is the combination we install most often. Housing circuits that want different water temperatures in the same system runs through the right manifolds and control equipment together with mixing valves, and circuit balance is established with balancing valves.
If you are curious about the installation side, we have set out the process step by step on our Ankara underfloor heating page.
Ask for a free site survey and a capacity calculation for your project.
WhatsApp / Phone: (0501) 557 80 89 • bilgi@projenza.com
Projenza Engineering and Energy Solutions — an Ankara-based mechanical installation and energy company. About Us • Services • Projects • References
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