Florida HVAC Practice Test (Free)

Question 1

Under EPA regulations, the maximum leak rate that triggers a mandatory repair for a covered appliance is

Accepted Answer

A threshold set by EPA rule that varies by appliance type

Answer

Always zero, any detectable leak requires repair

Answer

A fixed 500 percent per year for all equipment

Answer

Not addressed by any federal rule

Question 2

Where does the refrigerant absorb heat from the indoor air in a standard split air conditioning system?

Accepted Answer

In the evaporator coil

Answer

In the condenser coil

Answer

In the compressor

Answer

In the metering device

Question 3

What safety device is designed to shut down a gas furnace if the flame fails to ignite or is not detected?

Accepted Answer

Flame sensor (flame rectification sensor)

Answer

Blower relay

Answer

Condensate pump

Answer

Reversing valve

Question 4

What is the purpose of a limit switch on a gas furnace?

Accepted Answer

To shut down the burners if the heat exchanger overheats

Answer

To measure outdoor humidity

Answer

To control the thermostat display

Answer

To open the reversing valve

Question 5

Which EPA Section 608 certification type is required to service small appliances such as household refrigerators containing 5 pounds or less of refrigerant?

Accepted Answer

Type I

Answer

Universal

Answer

Type II

Answer

Type III

Question 6

In Florida, in a gas furnace, what is the primary function of the heat exchanger?

Accepted Answer

To transfer combustion heat to the circulating air stream without mixing in flue gases

Answer

To mix fuel and air before ignition

Answer

To filter dust from return air

Answer

To regulate thermostat set point

Question 7

In the basic refrigeration cycle, which component changes low-pressure refrigerant vapor into high-pressure, high-temperature vapor?

Accepted Answer

Compressor

Answer

Evaporator

Answer

Condenser

Answer

Metering device

Question 8

A heat pump in heating mode shows frost buildup on the outdoor coil during normal cold-weather operation. What component or cycle addresses this?

Accepted Answer

The defrost cycle, controlled by the reversing valve and defrost control board

Answer

The condensate pump

Answer

The economizer damper

Answer

The TXV bulb

Question 9

Which measurement describes the temperature of refrigerant vapor above its boiling point at a given pressure, used to check charge on a fixed-orifice system?

Accepted Answer

Superheat

Answer

Subcooling

Answer

Static pressure

Answer

Latent heat

Question 10

A technician measures high superheat and low subcooling on a fixed-orifice system. What does this combination most likely indicate?

Accepted Answer

A low refrigerant charge or restriction

Answer

An overcharged system

Answer

Normal operating conditions

Answer

A dirty condenser coil only

Florida HVAC Practice Test

Question 1

Under EPA regulations, the maximum leak rate that triggers a mandatory repair for a covered appliance is

Question 2

Where does the refrigerant absorb heat from the indoor air in a standard split air conditioning system?

Question 3

What safety device is designed to shut down a gas furnace if the flame fails to ignite or is not detected?

Question 4

What is the purpose of a limit switch on a gas furnace?

Question 5

Which EPA Section 608 certification type is required to service small appliances such as household refrigerators containing 5 pounds or less of refrigerant?

Question 6

In Florida, in a gas furnace, what is the primary function of the heat exchanger?

Question 7

In the basic refrigeration cycle, which component changes low-pressure refrigerant vapor into high-pressure, high-temperature vapor?

Question 8

A heat pump in heating mode shows frost buildup on the outdoor coil during normal cold-weather operation. What component or cycle addresses this?

Question 9

Which measurement describes the temperature of refrigerant vapor above its boiling point at a given pressure, used to check charge on a fixed-orifice system?

Question 10

A technician measures high superheat and low subcooling on a fixed-orifice system. What does this combination most likely indicate?

Question 11

How many years of mechanical trade experience does Florida generally require before a candidate can sit for the HVAC contractor licensing exam?

Question 12

Under federal law, what certification must a technician hold to purchase refrigerant and service equipment containing it?

Question 13

On a thermostatic expansion valve (TXV) system, what is the primary control variable the valve uses to regulate refrigerant flow?

Question 14

What is the general purpose of a thermocouple or flame rod on an older standing-pilot gas furnace?