gravity and forced air, gas, oil, and coal furnaces; cooling and heating installations, namely, gas fired and oil fired furnaces, split system air conditioners and packaged heat pumps, combination gas heating-electric cooling units, blower coils and thermostats sold as a unit with the above

'air':4,23 'blower':36 'coal':8 'coil':37 'combin':29 'condition':24 'cool':10,34 'electr':33 'fire':16,19 'forc':3 'furnac':9,20 'gas':5,15,30 'graviti':1 'heat':12,27,32 'heating-electr':31 'instal':13 'name':14 'oil':6,18 'packag':26 'pump':28 'sold':40 'split':21 'system':22 'thermostat':39 'unit':35,43

thermostats for use in connection with cooling and heating installations

'connect':5 'cool':7 'heat':9 'instal':10 'thermostat':1 'use':3

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