Written for the person who has to answer for it. Code basics, realistic intervals, access planning, and what a service record should actually contain.
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Dryer vents are one of the few maintenance items where the downside is a fire in an occupied building. NFPA research on home dryer fires attributes about 32% of them to failure to clean, with 27% starting when lint ignites. The same research counts an estimated 14,630 home structure fires a year involving those appliances, with 13 deaths, 444 injuries, and $238 million in property damage annually. Those figures include apartments, condos, and townhomes.
The exposure is not just the fire. It is whether you can demonstrate the building was maintained, on what schedule, unit by unit. That is a documentation problem as much as a cleaning problem, and most vendors solve only half of it.
Single-family and townhome construction follows IRC Section M1502. Larger multifamily buildings generally fall under the International Mechanical Code, but the requirements that matter to maintenance are the same shape:
Older buildings frequently fail one or more of these, and finding out during a cleaning is better than finding out during an inspection or a claim.
After one full cycle, your own service record tells you the right interval better than any rule of thumb. Buildings differ.
The cleaning is straightforward. Getting into 200 units is not.
Plan on a percentage of units not opening on any given day. What matters is how that is handled, which brings us to the part most bids skip.
An invoice tells your accounting department what to pay. It does not tell an owner, a board, or an insurer what was maintained. A usable record lists, unit by unit:
That document is the reason to hire a vendor who works this way. It converts a maintenance expense into something you can hand across a table when somebody asks what has been done.
Please reach us at (480) 389-8415 if you cannot find an answer to your question.
In-unit machines usually do fine on an annual cycle. Shared laundry rooms generally need twice a year, because a shared machine can run ten or twelve loads a day and loads a line in months rather than years.
Larger multifamily buildings typically fall under the International Mechanical Code rather than the IRC, but the fundamentals match: rigid metal duct, termination outside the building, a maximum developed length with deductions for elbows, and no screens on the termination. Where the equivalent length exceeds the default 35 feet, the length has to be identified on a permanent tag near the duct connection.
A rate per unit, a stated minimum, what happens with units nobody can access, how stacked units are handled, and what documentation you receive afterward. A bid without those is a number, not a scope.
Some percentage will not open on any given visit. What matters is that they are recorded as not accessed rather than quietly billed as cleaned, and that you get a list you can use for follow-up notices.
For exterior wall terminations, usually not. For stacked units and interior access, we coordinate with your office because the machine has to come out.
Per-unit pricing from $59 to $99 depending on volume and access, with a $500 minimum per visit in our core cities and $750 outside them. Monthly sanitizing accounts carry a $350 minimum instead. Net 30 is standard on jobs over $5,000.
Send a unit count and floor count and you get a number in writing, usually within a few hours during business hours. Rates from $59 a unit. Call (480) 389-8415.