Smoke alarm triggers response at HVAC building, Waltham MA

Fire & Arson

Reported: 10/29/2025 10:47 AM

Near Foundry Ave, Waltham, MA 02453

Fire crews responded to a smoke alarm triggered by a duct smoke detector on rooftop unit 2 at the HVAC building near Foundry Ave. No visible fire was found, and crews investigated the cause.

Audio|Source: Waltham Fire

03:40

Transcript:

00:00

Tension engine 3, squad 5, ladder 2.

00:04

Engine 3, squad 5,

00:06

ladder 2.

00:07

Responder box 5441, near Foundry Ave, indicating center point HVAC the smoke.

00:17

Tension 3, squad 55, ladder 2,

00:20

box 5441, near Foundry Ave,

00:23

indicating center point HVAC. Black smokes.

00:28

Willow Street to the office buildings in June 3.

00:34

Three has it.

00:36

Squad 5.

00:39

Squad 5, Ladder 2 have it.

00:42

All companies responding will be transmitting 5441 at 1348.

01:19

Waltham fire broadcasting alarm of firebox, 5441 has been received and transmitted near Foundry Ave in the gating zone 5 center point HVAC active smokes.

01:33

Waltham fire to C2.

01:37

C2. C2.

01:40

We also got the central station indicating general fire. Okay,

01:45

I have that.

01:46

Engine three.

01:51

We have it.

01:54

13, 409.

02:03

Detail 12 to Waltham Fire.

02:06

Detail 12.

02:09

Outwork detail, detail, 60, Sylvan Road terminated for the day.

02:14

Detail 12 terminated, 1350.

02:22

Walthamfire FS2. Walp. Amfire FS2.

02:35

Can you give us a call when you get a second?

02:39

Roger, my letter.

02:47

Engine three, you can show us off two-story office building, nothing shown, we're investigating.

02:56

Engine three, we'll show you off two-story office building, nothing shown. Just be advised we just got a trouble signal as well from that location.

03:04

Okay,

03:05

we have that.

03:07

1351.

03:09

C2 to Walsing.

03:11

C2.

03:14

We're off, foundry, command.

03:17

You're off with the boundary, command.

03:19

1351.

03:29

Danger 300 command, panel reads, duct smoke detector, rooftop unit number two.

03:38

I have that.

Disclaimer:
This transcript was automatically generated and may contain inaccuracies. Please verify the information independently.

Location mentioned:

Near Foundry Ave, Waltham, MA 02453

This shows a Google Street View of the area near the location, which might not be the exact address.

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