Short answer: Northampton splits into two distinct jobs. Residential work here means Victorian-era and early-twentieth-century homes with ductwork that was added long after the house was built. Commercial work means a dense downtown restaurant district where kitchen exhaust cleaning is a fire-code obligation under NFPA 96, not an optional service.
Older homes, added ductwork
A house built in the 1880s was not designed around forced-air ducts. When heating and cooling were modernized — often more than once — the duct system got fitted into whatever space was available.
What that produces:
- Converted gravity trunk lines that are oversized for modern blowers, so air moves slowly and debris settles
- Long flex runs to reach third-floor and addition spaces, sagging where debris collects
- Improvised returns, sometimes a wall or floor cavity doing the work of a return duct
- Unsealed joints at every generation of connection
- Multi-family conversions with runs shared or adjacent between units
None of this is unusual for the housing stock. It just means there are more places for material to accumulate than in a purpose-built system.
When residential cleaning is warranted
- Visible debris at the registers or behind the grilles
- A musty smell on startup
- Dust resettling within days of cleaning
- Rooms that never reach temperature
- Reduced airflow at the supply vents
- Recent renovation, particularly drywall work or floor refinishing
- Any sign of rodent or insect activity near ductwork
If the system was properly cleaned a few years back and none of that applies, it can wait. We'll say so.
Downtown restaurants: NFPA 96
For commercial kitchens, this isn't a maintenance preference. NFPA 96 sets required cleaning frequencies based on the type and volume of cooking, and your fire inspector and your insurer both expect documentation.
Grease accumulation in a hood, duct run, and rooftop fan is a fire load. The standard requires the full run cleaned to bare metal where accessible — not just the hood filters and the visible section above them, which is what a lot of quick service amounts to.
We clean the complete system, document what was done, and leave you with the certification records you need on file.
What a NADCA-standard cleaning includes
Full system under negative pressure: supply and return runs, registers, and the air handler including blower wheel and coil. Source removal, so debris exits through the vacuum. Duct material identified before tooling goes in — flex and fiberglass duct board can't take an aggressive rotary brush.
Before-and-after photos of the duct interior, because it's the only verification you can actually check.
Get in touch
We're NADCA-certified and serve Northampton and the Pioneer Valley, residential and commercial. Tell us what you're dealing with and we'll give you a straight assessment.
