And simply by opening windows at night you can drastically reduce (or possibly eliminate) the need for main floor cooling during a heat wave.Īnd as a cooling design option, you could get a ventilation system with a cooling coil so you are using the same duct work, or you could get a mini-split heat pump. Something to consider however – there is so much thermal mass in the slab that it regulates heat during heat waves as the concrete will absorb heat from the air. But that’s not a reason not to have radiant floor heat - which is extremely comfortable particularly with slabs - you would just need a separate system, which is often the case with other home heating systems anyway. Not to mention your feet would be frigid so it would not be a comfortable system. That way you can have radiant heat, heat pump efficiency, and you can still run it with electricity instead of fossil fuels.Īs for cooling, I know this isn’t what you’re asking but I’m covering it anyway for others who may be reading along – it is never wise to use a radiant floor system for cooling, as humid air can condense and leave mildew. So you could sort of ‘have your cake and eat it too’ by installing an air-to-water heat pump. Legalett circulates air through the floor rather than liquid (see the pros and cons of air heated floors vs hydronic here) but they can supply heat to the heater box in the floor using either water or electric coils. Just like hydronic radiant floor systems, the Legalett air heated radiant floor can be powered with a boiler, in which case you wouldn’t need to choose. I would think of it more as a comfort and design issue, and whether or not you want a heated floor. Emmanuel Cosgrove Best answer 4 months ago
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