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r/BuildingAutomation↗

Building Automation/Energy Management Control Systems. Everything related to HVAC & facility control

Building Automation/Energy Management Control Systems. BAS, BMS, EMCS - Everything related to HVAC and facility controls.

19k subscribers207 posts / mo in Sep 2026149 authors / mosince 2013

r/BuildingAutomation has 19k members (+50% over the last 12 months). It gets about 207 posts a month from 149 people. Top topics: HVAC Trades, Car Panels & Switches and Civil Engineering Careers.

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When to post on r/BuildingAutomation

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Visitors without an account can open 3 subreddit reports a day. The best time to post on r/BuildingAutomation, removal risk and the rest of the report are one step away.

Size and growth

How r/BuildingAutomation has grown

r/BuildingAutomation

Subscriber growth

Subscribers over time

+50%in 12 months · +8.6% in 3 months · +2.5% in 1 month
Oct 202619k
Growing19k subscribers
Data since Mar 2018Live · through Oct 2026
r/BuildingAutomation

Monthly activity

Posts, comments and authors per month

+19%vs Sep 2025 · −13% last 3 months vs the 3 before
Sep 2026207
BusierPeaked at 223 in May 2026
Data through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/BuildingAutomation

Top topics

Share of the subreddit's posts

  1. HVAC Trades2.5%
  2. Car Panels & Switches1.1%
  3. Civil Engineering Careers1.0%
  4. BCBA/RBT Career Discussions0.4%
  5. Product Management Career Navigation0.4%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. Hvac-Talk
  2. United States Johnson Controls
  3. Schneider Electric
  4. Dropbox
  5. LinkedIn

The full report

Everything else about r/BuildingAutomation

Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.

Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research