Heating! (São Paulo)

Hi all - I'm brand new to both Sao Paulo & Internations so please forgive me if this isn't the kind of thing people normally ask about on here...
It's about to get pretty cold over the next week and my accommodation has no heating. Does anyone know of an appliances shop around Pinheiros where I might be able to buy a little fan heater? I seem to surrounded by furniture & bed shops on Rua Teodoro Sampaio, but can't seem to see anywhere I could buy a heater from!
Many thanks in advance
Lora