Industry
What are some differences between a truck mounted vs. portable vacuum?
Portable systems are lower suction, but can get right up to the furnace area for proper cleaning, and you're able to get a much better idea of what comes out of each system.
Why is it important to maintain a fully stocked and equipped Sprinter at all times?
To ensure your co-workers are set up for success when taking that Sprinter next.
Which end of the airline do we begin wrapping the airline up with, and why?
FEMALE.
The female fitting is the most fragile as it has moving parts (bearings/collar, etc.), unlike the male fitting, and is more likely to be damaged if being pulled along the ground or dropped. By having this fitting in hand while wrapping, we are reducing the possibility of damage.
Particle.
____% of all illnesses are either caused by, or aggravated by, polluted indoor air.
- American College of Allergists
50%
Approximately how many companies do "duct cleaning" in the lower mainland?
Over 100 companies provide some sort of duct cleaning service in the lower mainland.
What do you do when you're ahead of schedule on your morning job?
If you're more than 90 minutes ahead of schedule, call the office, otherwise call the client and confirm if they are available early.
If your 50' RED residential airline had a bad air leak, what would you do?
(3 things)
1. Put a note into the Slack channel.
2. Place it in the front cab of the Sprinter.
3. Bring it back into the office and update the slack note to where it is or whether it has been replaced.
When doing a dryer vent cleaning, what 2 notes should be added to the line-item description?
Dryer test run and operational on heat and air cycles before and after cleaning. Airflow confirmed after cleaning.
BONUS: Screen in place which could not be safely accessed from outside may lead to future blockages, discussed with homeowner.
Indoor air can be 2-5 times and as much as ____ times more polluted than outside air.
- Environmental Protection Agency
100
How many duct cleaning companies in the lower mainland are NADCA certified?
As of 2025, there are only 12 companies that are NADCA certified.
The schedule shows an arrival time of 9:00 AM for your first job. What time should you arrive at the office?
7:30am
How do you complete a HARD RESET on a furnace?
(6 Steps)
1. Turn the Thermostat OFF.
2. Turn the Emergency Switch OFF.
3. Flip the Breaker OFF, and wait 60 seconds (set a timer)
4. Flip the Breaker ON.
5. Turn the Emergency Switch ON.
6. Turn the Thermostat ON.
What's the difference between a Condenser Coil and an Evaporator Coil?
The condenser coil is OUTSIDE of the home and condenses the refrigerant which dissipates heat from the refrigerant lines to cool down the system.
The evaporator coil is INSIDE the home (above the furnace/heat exchanger) and removes moisture/humidity from the warm air passing by the cold refrigerant in the coil.
What is Ozone and is it safe?
In controlled amounts, ozone can help to improve indoor air quality by eliminating VOCs and other gaseous contaminants in our airspace.
Ultra high levels of ozone, used for extreme odour removal in bio-hazard situations, IS unsafe to be around.
What does NADCA Certification indicate to a homeowner?
It lets the homeowner know that we have met industry standards for HVAC system cleaning and follow best practices for improving indoor air quality. This assures homeowners that we:
1. Follow Industry Standards
2. Employ Trained Technicians
3. Use Proper Equipment
4. Promote Health & Efficiency
5. Follow a Code of Ethics
Which core value does "that's not my job" breach?
Various
When you arrive to a lock-box restoration job, what are the first 3 things you need to confirm/look for when on site?
Ensure home is empty.
Power / can do the job.
Filter size.
BONUS: Working Solo Workflow if you're alone.
How much dust accumulates in the average home in 1 year?
The EPA has studied indoor dust accumulation as part of its research into air pollution and allergens. Their data suggests that an average house (especially one with carpets) can accumulate up to 40 lbs of dust per year.
UVC lamp intensity is rated in Microwatts.
The 12" Lamp is 150mW, and the 16" lamp is 180mW.
At what distance from the lamp is this intensity measured?
1 Meter (about 3.25 feet on either side of the lamp, for a total deactivation zone of 6.5 feet)
Why is duct cleaning a scam?
Because our industry is not regulated, it can be challenging for a consumer to know whether the service they receive is actually being done properly.
With a NADCA certified company, the ducts are being cleaned properly, and up to standard that provides peace of mind to the consumer.
Typically, companies who offer something like a $99 duct cleaning, don't clean the plenums, and are done in 30 minutes or less are typically considered a "scam".
Which core value does this statement breach?
"I don't want to rat out my friends"
Accountability.
What do you do if you THINK you have a custom size filter?
Measure the existing filter. Never assume that the size noted on the filter is accurate.
(Nominal vs. Exact sizes)
The average human sheds on average, up to 40,000 skin cells per _______.
40,000 skin cells per MINUTE.
This equals over 40,000,000 per DAY per person.
These skin cells essentially end up as dust in our homes, in addition to all of the other particles, like dust, dust mite feces, and pet hander, this is a whole lot of dust.
Our SolaceAir UVC lamps last for how long (hours) before needing to be replaced?
27,000 Hours (3 years)