accuracy	accurate	adjustable	air conditioning	aluminum	ambient temperature	amplification
anchor	appliance	approximate	approximately	approximately equal	approximation	assemble (parts)
automatic	automatically	automaton	average power	average voltage	ball and socket joint	blockage
blower	boiler	braces (for formulas)	brackets (for formulas)	burner	button (machine)	cable
calorie	capacity	caulking	cause	celsius	channel	charge (a cylinder with gas)
chloro-fluro-carbons	circuit	clog, clogged	combustion	compatible	compress	concrete
condenser	condensing (furnace)	conduct electricity	conductor	configuration	confined space	consistency
console	consultant	contraction	convection	conversion	convert	coolant
cooling system	coupling	coupling alignment	current	current gain	cycle	degree celsius
degree fahrenheit	dense	density	deodorizer (Automotive)	deposit	detector	deteriorate
determine (a value)	deviate, deviation	device	diagram	diameter	digital multimeter	digital voltmeter
directional	discharge	dissipate (heat gas, etc)	downflow	draft	drain	draft diverter
drip	drop (decrease)	duct	efficiency	efficient	electric outlet	electric plug
energy	energy source	engine	engineering	estimate	ethanol gycol	evacuate
evaporator	exfiltration	exhaust	expand	fahrenheit	feedback	filament
filter	fitting	fixed	flame	flow	fluid	flush
formula	formulate	foundation	furnace	fuse	gain	gauge
generate	generator	gram	graphically expressed	grill (n)	hanger	heat
heating degree days	heat transfer multiplier	heat up	horizontal	horsepower	hybrid	ignition
increment	infiltration	input	install	instrumentation	insulate from electricity	insulation
insulator	intake line	in terms of	invent	joist	junction	kilogram
kilowatt-hour	leak	license->	~ expired	~ revoked	liter	liter per second
load	louvers	lubrication	manufacture	maximum current	maximum voltage	mechanism
medium	meter	mildew	millimeter	minimum current	miter	modulate
modulation	mold (plant)	motor	needle (gauge)	negligible (error)	normal	normally closed
normally open	normally closed	notation	nozzle	obsolete	odor	ohm
operate	original equipment manufacterer	outlet	output	output voltage	outtake line	panel
parallel	part	partition	pascal	perpendicular	pipe	pipeline
piping	plastic	plenum	plugged	potential difference	potentiometer	power
lose ~	power amplifier	power gain	power source	power surge	precise	precision
pressure	preventive maintenance	primary voltage	processing	produce	production	psi-a (absolute)
psi-g (gauge)	pulse	radiant heat	recover (refridgerant)	rectifier	recursive	recycle
reference	refridgerant	regulator	reinforce	remote (control)	research and development	resistance
resistor	resistor current	revolution	revolutions per minute	revolutions per second	rheostat	right angle
rigid	robot	roll down window	roll up window	root mean square	rough	run (operate)
run down (power)	sample	score (scratch)	scoring	seal->	blown ~	seat (a part, v)
secondary current	sediment	semiconductor	sensitive	sensor	series (circuit)	short circuit
signal	simulate, simulation	simulator	sleeve	solvent	source	source voltage
spark	spec(s)	spring	square centimeter	square foot	square inch	square meter
square yard	stopped up	strainer	structure	subscript	substance	surface
surge	switch	table	thermostat	tight	toggle	torque
toxic	transform	transient	tungsten inert gas (welder)	turbulence	upflow	upgrade
vacuum (gauge)	valve	vent	ventiliation	vibrate, vibration	volt	voltage
voltage gain	voltimeter	warp	weigh	vibrate, vibration	volt	voltage
voltage gain	voltimeter	warp	weight	wire

For the signs for these terms, see Signs for technical/specialized vocabulary.

For additional relevant terms, see Vocabulary list for automotive under "Tools", Vocabulary list for engineering especially under "Circuitry and components", and Vocabulary list for physics.