MI HEATING SERVICE EXAM PREP PACK | LATEST 2026 QUESTIONS &
VERIFIED ANSWERS | HVAC SYSTEMS, FURNACE REPAIR, SAFETY
CODES & TROUBLESHOOTING GUIDE
70 DEGREES FAHRENHEIT IS EQUIVALENT TO _____ DEGREES CELSIUS. USE FORMULA C=(F-
32)X5/9 (5/9=.56).
ANSWER>> 21
28 DEGREES CELSIUS IS EQUIVALENT TO _____ DEGREES FAHRENHEIT. USE FORMULA
F=(CX9/5)+32 (9/5=1.8).
ANSWER>> 82
ON A LOW-PRESSURE RESIDENTIAL STEAM BOILER THE RELIEF DEVICE OPENS AT?
ANSWER>> 15 POUNDS
IF TOO MUCH PRIMARY AIR IS USED THE FLAME WILL __________?
ANSWER>> LIFT OFF THE BURNER
WHAT OPERATES THE HEAT ANTICIPATOR IN A LOW VOLTAGE THERMOSTAT?
ANSWER>> 24 VOLTS A/C
, A LIMIT IS LOCATED WHERE IN THE ELECTRICAL CIRCUIT?
ANSWER>> EITHER THE 24 OR 120-VOLT CIRCUIT
WHAT IS THE USUAL OIL PRESSURE IN A HIGH-PRESSURE GUN TYPE OIL BURNER?
ANSWER>> 100 PSIG
WHAT LICENSE IS REQUIRED TO PERFORM A CSD-1 ON A BOILER THAT HAS AN INPUT RATING
OF 1.7MBTU?
ANSWER>> MECHANICAL CONTRACTOR CATEGORY 6
SECTION 1004.1 : A BOILER WITH A RATING OF 12,500,000 BTU'S OR LESS IS FOR CSD-1,
ANYTHING LARGER IS PER NFPA-85 BUT BOTH OF THEM FALL UNDER CATEGORY 6 UNLIMITED
HEATING SERVICE LICENSE.
A PSYCHOMETER IS A _____?
ANSWER>> A HYGROMETER CONSISTING OF A WET-BULB AND DRY-BULB
THERMOMETER, THE DIFFERENCE IN THE TWO READINGS USED TO DETERMINE THE
ATMOSPHERIC HUMIDITY.
A PSYCHOMETRIC CHART IS A _____?
ANSWER>> CHART WHERE THE VARIOUS PROPERTIES OF AIR IS PLOTTED
VERIFIED ANSWERS | HVAC SYSTEMS, FURNACE REPAIR, SAFETY
CODES & TROUBLESHOOTING GUIDE
70 DEGREES FAHRENHEIT IS EQUIVALENT TO _____ DEGREES CELSIUS. USE FORMULA C=(F-
32)X5/9 (5/9=.56).
ANSWER>> 21
28 DEGREES CELSIUS IS EQUIVALENT TO _____ DEGREES FAHRENHEIT. USE FORMULA
F=(CX9/5)+32 (9/5=1.8).
ANSWER>> 82
ON A LOW-PRESSURE RESIDENTIAL STEAM BOILER THE RELIEF DEVICE OPENS AT?
ANSWER>> 15 POUNDS
IF TOO MUCH PRIMARY AIR IS USED THE FLAME WILL __________?
ANSWER>> LIFT OFF THE BURNER
WHAT OPERATES THE HEAT ANTICIPATOR IN A LOW VOLTAGE THERMOSTAT?
ANSWER>> 24 VOLTS A/C
, A LIMIT IS LOCATED WHERE IN THE ELECTRICAL CIRCUIT?
ANSWER>> EITHER THE 24 OR 120-VOLT CIRCUIT
WHAT IS THE USUAL OIL PRESSURE IN A HIGH-PRESSURE GUN TYPE OIL BURNER?
ANSWER>> 100 PSIG
WHAT LICENSE IS REQUIRED TO PERFORM A CSD-1 ON A BOILER THAT HAS AN INPUT RATING
OF 1.7MBTU?
ANSWER>> MECHANICAL CONTRACTOR CATEGORY 6
SECTION 1004.1 : A BOILER WITH A RATING OF 12,500,000 BTU'S OR LESS IS FOR CSD-1,
ANYTHING LARGER IS PER NFPA-85 BUT BOTH OF THEM FALL UNDER CATEGORY 6 UNLIMITED
HEATING SERVICE LICENSE.
A PSYCHOMETER IS A _____?
ANSWER>> A HYGROMETER CONSISTING OF A WET-BULB AND DRY-BULB
THERMOMETER, THE DIFFERENCE IN THE TWO READINGS USED TO DETERMINE THE
ATMOSPHERIC HUMIDITY.
A PSYCHOMETRIC CHART IS A _____?
ANSWER>> CHART WHERE THE VARIOUS PROPERTIES OF AIR IS PLOTTED
