HVAC Unit Has a Burning Smell at the Return?

Answer A burning smell at the HVAC return can be a sign of component failure. If there is a burning smell accompanied by large amounts of smoke, immediately turn off your air conditioner via the circuit b... Read More »

Top Q&A For: HVAC Unit Has a Burning Smell at the Return

Is it normal to smell a burning smell when the gas heater first comes on?

Heating elements collect dust when the furnace is not in use, and it burns away quickly when the heater is first turned on. If the smell lingers longer than a few minutes or if you see a spark, smo... Read More »

What Is a HVAC AC Unit?

HVAC refers to heating and cooling units. It is an acronym for "heating, ventilation and air conditioning." An HVAC unit works by drawing interior air out of a home through a vent and distributing ... Read More »

My HVAC Unit Is Leaking?

Heating, ventilation and air conditioning (HVAC) units naturally produce water as a byproduct of their method of cooling. Water that is dripping inside the HVAC unit or air condenser but not leakin... Read More »

What is the unit of measure for HVAC?

The primary unit of measurement for heating, ventilation and air conditioning (HVAC) systems is the British thermal unit per hour (BTU/hr), which signifies how much heat a furnace or heating unit p... Read More »