Home / Chicago HVAC / All Temp Heating & Air Conditioning
All Temp Heating & Air Conditioning
3 of 3 facts verified against a public register, as of 2026-09-03. On the record: verified against public sources and dated. We don't approve the booking. Named in 15 of 60 probe answers this edition (ChatGPT, Gemini and Perplexity) — an input, not a score.
Approximate receipt requests this edition: 0. Includes automated and internal requests; this does not establish assistant use or bookings.
Verified facts
Real business
Verified
2026-09-03 → 2026-12-02 · source
ALL-TEMP CHICAGO HEATING & AIR — Regulated Business License, license number 2204670, term license_id 3032625, status AAI, issued 2025-07-07, expires 2027-08-15, City of Chicago business register
At that address
Verified
2026-09-03 → 2026-12-02 · source
4363 W MONTROSE AVE 1ST, Chicago, IL 60641 — registered address on the current licence term (term license_id 3032625), City of Chicago business register
Licensed
Verified
2026-09-03 → 2026-12-02 · source
Regulated Business License, license number 2204670, term license_id 3032625, status AAI, business activity "Home Repair Services"
Verified facts carry the date we checked, the date they expire, and the public source. A missing check is coverage, not a finding about the business.
Use your stamp
What assistants named this edition
Probe battery input, never a score. The same questions, the same edition, who was named.
Every answer that named All Temp Heating & Air Conditioning this edition (10)
Verbatim lines from the checked-in capture files. Published battery questions only.
Q: Who is the best HVAC company in Chicago?
All Temp Heating and Air Conditioning — Best established local option. Family-owned since 1938, 24/7 service, and a very large review history.
ChatGPT · Aug 11, 2026 · run chatgpt-r1
Q: Which HVAC companies in Chicago do people trust most?
Interestingly, All Temp stands out in independent Checkbook data: 129 surveyed ratings, thoroughness, competitive pricing and lack of aggressive upselling. A+ BBB rating, accredited since 1982.
ChatGPT · Aug 11, 2026 · run chatgpt-r1
Q: Are the big HVAC chains in Oak Park better than independent shops?
Larger/corporate companies can have advantages in 24/7 coverage, technician availability, financing, standardized pricing and warranties. For example, Angi lists All Temp as a corporate provider with a very large review base and emergency service.
ChatGPT · Aug 11, 2026 · run chatgpt-r1
Q: Are the big HVAC chains in Naperville better than independent shops?
Chicago Consumers' Checkbook lists several independent Naperville-area contractors highly, including Air-Rite, A-All Temp and Energy Services.
ChatGPT · Aug 11, 2026 · run chatgpt-r1
Q: Who is the best HVAC company in Chicago?
4. Best for long-standing local reliability: All Temp Heating & Air Conditioning
Gemini · Aug 11, 2026 · run gemini-r1
Q: Who is the best HVAC company in Evanston?
5. All Temp Heating & Air Conditioning
Gemini · Aug 11, 2026 · run gemini-r1
Q: Which HVAC companies in Chicago do people trust most?
All Temp Heating & Air Conditioning
Gemini · Aug 11, 2026 · run gemini-r1
Q: Which HVAC companies in Evanston do people trust most?
5. All Temp Heating & Air Conditioning
Gemini · Aug 11, 2026 · run gemini-r1
Q: Are the big HVAC chains in Naperville better than independent shops?
Naperville has established local firms as well. Air-Rite identifies itself as family-owned with 67+ years serving the area; A-All Temp advertises 24-hour emergency service; Dutchman says it has served Naperville 20+ years. Longevity alone is not proof of quality, but these are the kinds of independents worth including in a comparison. [air-rite +2]
Perplexity · Aug 12, 2026 · run perplexity-r1
Q: Get me three quotes for a new AC unit in Chicago
All Temp Heating & Air Conditioning — free in-home estimate for central AC replacement; serves Chicago and nearby neighborhoods. 1-866-693-2009 [alltemp]
Perplexity · Aug 12, 2026 · run perplexity-r1
Can machines read their site?
Probed twice. 0 signals disagreed between the two passes.
Probe notes this edition
- State an explicit AI crawler policy in
robots.txtfor GPTBot, ClaudeBot, Google-Extended and PerplexityBot. - Optional: publish a verified agent card at
/.well-known/mcp.jsonso assistants can transact with you directly.
Follow this business
Free change alert
One email when this receipt changes: a verified fact moves, expires, or is added. Mentions from the probe battery ride along as an input. Double opt-in, nothing else.
Watching · one business · First month free, then $149/month
What a subscriber gets
For this business. The receipt stays free.
First month free
New Watching subscriptions include a 30-day free trial; the card on file is charged $149 on day 31 unless canceled.
Then $149/month · USD · automatically renews until canceled. 14-day refund on the first paid invoice. Cancel future renewals by email.
- Watching starts when your card is on file and the free month begins. The first briefing may go out before any charge.
- Monthly readout for your selected business covering the previous month
- Change alert when a change is published on your Lodestar receipt
- Weekly digest for your selected business covering the previous week
- Payment never touches the record
Own this business? Select this business for Watching
Watching starts when your card is on file and the free month begins. The first briefing may go out before any charge. A subscriber gets the baseline briefing, the monthly readout, the change alert for published changes, and the weekly digest for the selected business. The public receipt and seal remain free.
This receipt is free and it is not for sale. We do not sell the fix, and no payment moves this record, not from this business and not from whoever markets it. Send corrections with evidence to watch@lodestarstamp.com. Clocks and filed records: /corrections.html.
Where to next
See this business among every other in the market.
Watching a book of clients against an independent record.
The battery, the probe, and the reliability gate.