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[neonix]

There are not many electronic radiator thermostats without wi-fi or bluetooth nowadays.

Electronic Radiator Thermostat - HR27R | Resideo FR

Electronic Radiator Thermostat - HR27R: discover all the product's features and technical specifications.

www.resideo.com

 

[Yupo]

"People can often install removable insulation without obtaining building permits or hiring professionals, making it an affordable do-it-yourself solution within reach of everyone."
This is useful for heating and cooling.

How to Dress and Undress your Home

Before the large-scale use of fossil fuels, removable textile layers kept homes warm in winter and cool in summer.

solar.lowtechmagazine.com