boiler
central heating boiler

calorimetric
...determination of heating value

central
central heating

heating
heating apparatus

hot-air
hot-air heating

indirect
indirect heating

induction
induction heating

infrared
infrared heating

install
to install a heating system

preset
...the central heating to come on in the morning

self-heating
de aquecimento automático

steam
steam heating

time
time of heating up