A cheap advertised price is not a quote. It is an appointment. Here is what that number leaves out, how long the work should actually take, and the five questions that turn a vague offer into a firm price
The $79 gets them in the house
You have seen the deals. Seventy-nine dollars, whole house, this week only. The price is real in the narrowest sense: it buys a visit. What happens next is the part the ad does not mention. Once the technician is inside, you learn that additional vents are extra. Furnace hookups are extra. Cleaning the A/C coils is extra. The bill you sign has very little to do with the number that brought them to your door.
None of this is illegal, and some of it is not even unreasonable. A house with more vents genuinely takes more work. The problem is the sequencing. You agreed to a price before anyone told you what that price covered, and now you are negotiating in your own hallway with a stranger who has already unpacked his equipment.
Cleaning the ducts is one part of four
This is the distinction that matters most, and it is the one most easily lost in a price war. Your air handling system is not just the ductwork. A complete cleaning addresses four parts:
- 01The ductwork. The supply and return runs — the part every advertised special covers.
- 02The fan. The blower wheel collects a felt of dust on every blade, which costs you airflow and efficiency.
- 03The furnace components. The cabinet interior and the surfaces the air passes over before it reaches your rooms.
- 04The A/C coils. Dust plus condensation is why a neglected coil is the part of the system you can often smell.
Clean one part of four and you have moved dust around. The system will still deliver air across the same dirty fan and the same loaded coil on its way to your family.
How long it should take
2–2.5 hrs
for an average house, done properly. Not forty-five minutes.
Time is the honest tell. A crew that is in and out in under an hour has not disassembled anything, has not reached the fan, and has not touched the coil. If the appointment window you are quoted is short, that is your answer about scope, whatever the invoice says.
Five questions to ask before you book
Ask these on the phone, before anyone is scheduled. The answers cost you nothing and they tell you almost everything.
1. What is included in the price?
You want the four parts named out loud, plus a vent count. “Whole house” is not a scope.
2. What is not included?
The more useful of the two questions. Every surprise fee lives in this answer.
3. Do you follow NADCA standards for cleanliness?
There is an industry standard for what “clean” means. A contractor who works to it will say so immediately.
4. How long will the job actually take?
Compare the answer against two to two and a half hours and judge accordingly.
5. Do you back your work with a warranty?
A company that stands behind the result is telling you it expects the result to hold.
The more you ask upfront, the clearer your quote
A quote given after five real questions is a quote you can hold someone to. That is the whole point of asking. It is also why we would rather you called with a list than booked on a number alone: a customer who knows what the job involves is the easiest customer to satisfy.
Ask us the five questions.
We will tell you what is included, what is not, and how long it will take before you commit to anything.
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