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⏶ Open data · 2026-W26 · Jun 22 – Jun 28, 2026

100 US Cities × 4 AI Engines — Home Services (HVAC)

How AI engines recommend HVAC contractors for emergency AC repair, heat pump installation, furnace replacement, and commercial work.

Markets
100
100 cities × 1 industries
Snapshots
151
Window: 4 weeks
Properties named
4157
Unique across all markets
Dominant engine
ChatGPT
avg coverage shown below

Avg per-engine coverage across 100 markets

  • ChatGPT81%
  • Claude76%
  • Perplexity3%
  • Gemini66%

Per-market data (100)

akron·hvac

1 snapshot
Median score
16
of cited businesses
Top score
87
single best
Properties named
48
unique, window
Avg coverage
60%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT40%
Claude100%
Perplexity0%
Gemini100%

albany·hvac

1 snapshot
Median score
39
of cited businesses
Top score
100
single best
Properties named
8
unique, window
Avg coverage
67%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT67%
Claude100%
Perplexity0%
Gemini100%

albuquerque·hvac

2 snapshots
Median score
100
of cited businesses
Top score
100
single best
Properties named
47
unique, window
Avg coverage
29%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT17%
Claude50%
Perplexity0%
Gemini50%

allentown·hvac

2 snapshots
Median score
40
of cited businesses
Top score
100
single best
Properties named
82
unique, window
Avg coverage
24%
across 4 engines
📈 Top movers
  • Jack Lehr Heating, Cooling & Electric#10 → #1 (+9)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT27%
Claude20%
Perplexity0%
Gemini50%

asheville·hvac

1 snapshot
Median score
30
of cited businesses
Top score
96
single best
Properties named
17
unique, window
Avg coverage
100%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity100%
Gemini100%

atlanta·hvac

1 snapshot
Median score
94
of cited businesses
Top score
100
single best
Properties named
5
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

austin·hvac

1 snapshot
Median score
30
of cited businesses
Top score
90
single best
Properties named
16
unique, window
Avg coverage
100%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity100%
Gemini100%

bakersfield·hvac

2 snapshots
Median score
100
of cited businesses
Top score
100
single best
Properties named
14
unique, window
Avg coverage
39%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT54%
Claude50%
Perplexity0%
Gemini50%

baltimore·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
107
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT77%
Claude74%
Perplexity0%
Gemini50%

baton rouge·hvac

1 snapshot
Median score
72
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

bend·hvac

2 snapshots
Median score
40
of cited businesses
Top score
100
single best
Properties named
86
unique, window
Avg coverage
49%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT70%
Claude74%
Perplexity0%
Gemini50%

birmingham·hvac

1 snapshot
Median score
94
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

boise·hvac

1 snapshot
Median score
66
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

boston·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
105
unique, window
Avg coverage
48%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT67%
Claude74%
Perplexity0%
Gemini50%

bridgeport·hvac

2 snapshots
Median score
100
of cited businesses
Top score
100
single best
Properties named
14
unique, window
Avg coverage
38%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT50%
Claude54%
Perplexity0%
Gemini47%

buffalo·hvac

2 snapshots
Median score
60
of cited businesses
Top score
100
single best
Properties named
66
unique, window
Avg coverage
44%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT77%
Claude50%
Perplexity0%
Gemini50%

charleston·hvac

2 snapshots
Median score
96
of cited businesses
Top score
100
single best
Properties named
10
unique, window
Avg coverage
39%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT50%
Claude54%
Perplexity0%
Gemini50%

charlotte·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
81
unique, window
Avg coverage
47%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
  • One Hour Heating & Air Conditioning#3 → #6 (-3)
Per-engine coverage (avg over window)
ChatGPT67%
Claude70%
Perplexity0%
Gemini50%

chattanooga·hvac

1 snapshot
Median score
94
of cited businesses
Top score
100
single best
Properties named
5
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini0%

chicago·hvac

2 snapshots
Median score
32
of cited businesses
Top score
100
single best
Properties named
110
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT74%
Claude77%
Perplexity0%
Gemini50%

cincinnati·hvac

2 snapshots
Median score
40
of cited businesses
Top score
100
single best
Properties named
110
unique, window
Avg coverage
24%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT70%
Claude27%
Perplexity0%
Gemini0%

cleveland·hvac

2 snapshots
Median score
80
of cited businesses
Top score
100
single best
Properties named
53
unique, window
Avg coverage
43%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT64%
Claude56%
Perplexity0%
Gemini50%

columbia sc·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
120
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT77%
Claude74%
Perplexity0%
Gemini50%

columbus·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
62
unique, window
Avg coverage
45%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT64%
Claude67%
Perplexity0%
Gemini47%

corpus christi·hvac

1 snapshot
Median score
63
of cited businesses
Top score
100
single best
Properties named
8
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

dallas·hvac

1 snapshot
Median score
80
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
70%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT80%
Claude100%
Perplexity0%
Gemini100%

dayton·hvac

2 snapshots
Median score
40
of cited businesses
Top score
100
single best
Properties named
93
unique, window
Avg coverage
25%
across 4 engines
📈 Top movers
  • Watkins Heating & Cooling#4 → #2 (+2)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT74%
Claude24%
Perplexity0%
Gemini0%

denver·hvac

1 snapshot
Median score
72
of cited businesses
Top score
100
single best
Properties named
5
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

des moines·hvac

1 snapshot
Median score
63
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

detroit·hvac

1 snapshot
Median score
46
of cited businesses
Top score
100
single best
Properties named
8
unique, window
Avg coverage
72%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT87%
Claude100%
Perplexity0%
Gemini100%

el paso·hvac

2 snapshots
Median score
40
of cited businesses
Top score
100
single best
Properties named
108
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
  • Mechanical Technologies#44 → #3 (+41)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT77%
Claude74%
Perplexity0%
Gemini47%

fort collins·hvac

1 snapshot
Median score
78
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

fort myers·hvac

1 snapshot
Median score
91
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

fresno·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
52
unique, window
Avg coverage
43%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT60%
Claude60%
Perplexity0%
Gemini50%

grand rapids·hvac

1 snapshot
Median score
75
of cited businesses
Top score
100
single best
Properties named
4
unique, window
Avg coverage
25%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude0%
Perplexity0%
Gemini0%

greensboro·hvac

1 snapshot
Median score
71
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

greenville sc·hvac

2 snapshots
Median score
35
of cited businesses
Top score
100
single best
Properties named
65
unique, window
Avg coverage
45%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT56%
Claude74%
Perplexity0%
Gemini50%

hartford·hvac

1 snapshot
Median score
88
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

honolulu·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
55
unique, window
Avg coverage
40%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT47%
Claude64%
Perplexity0%
Gemini50%

houston·hvac

2 snapshots
Median score
32
of cited businesses
Top score
100
single best
Properties named
104
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
  • One Hour Air Conditioning & Heating of Houston#95 → #3 (+92)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT74%
Claude74%
Perplexity0%
Gemini50%

indianapolis·hvac

2 snapshots
Median score
40
of cited businesses
Top score
100
single best
Properties named
99
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
  • Williams Comfort Air#47 → #1 (+46)
  • Bolls Heating & Cooling#13 → #2 (+11)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT74%
Claude77%
Perplexity0%
Gemini50%

jacksonville·hvac

1 snapshot
Median score
74
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

joshua tree·hvac

2 snapshots
Median score
60
of cited businesses
Top score
100
single best
Properties named
66
unique, window
Avg coverage
44%
across 4 engines
📈 Top movers
  • Hi-Desert Air#19 → #1 (+18)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT77%
Claude50%
Perplexity0%
Gemini50%

kansas city·hvac

1 snapshot
Median score
66
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

knoxville·hvac

2 snapshots
Median score
40
of cited businesses
Top score
100
single best
Properties named
104
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
  • Aire Serv of Knoxville#12 → #6 (+6)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT74%
Claude77%
Perplexity0%
Gemini50%

lake tahoe·hvac

1 snapshot
Median score
72
of cited businesses
Top score
100
single best
Properties named
5
unique, window
Avg coverage
25%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude0%
Perplexity0%
Gemini0%

las vegas·hvac

1 snapshot
Median score
91
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

lexington·hvac

1 snapshot
Median score
47
of cited businesses
Top score
100
single best
Properties named
8
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

little rock·hvac

1 snapshot
Median score
34
of cited businesses
Top score
100
single best
Properties named
9
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

los angeles·hvac

2 snapshots
Median score
100
of cited businesses
Top score
100
single best
Properties named
13
unique, window
Avg coverage
36%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT44%
Claude50%
Perplexity0%
Gemini50%

louisville·hvac

2 snapshots
Median score
35
of cited businesses
Top score
100
single best
Properties named
105
unique, window
Avg coverage
49%
across 4 engines
📈 Top movers
  • Prudential Heating & Air Conditioning#34 → #4 (+30)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT67%
Claude77%
Perplexity0%
Gemini50%

madison·hvac

1 snapshot
Median score
94
of cited businesses
Top score
100
single best
Properties named
5
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

mcallen·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
101
unique, window
Avg coverage
49%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT70%
Claude77%
Perplexity0%
Gemini50%

memphis·hvac

2 snapshots
Median score
60
of cited businesses
Top score
100
single best
Properties named
57
unique, window
Avg coverage
44%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT74%
Claude50%
Perplexity0%
Gemini50%

miami·hvac

2 snapshots
Median score
100
of cited businesses
Top score
100
single best
Properties named
32
unique, window
Avg coverage
39%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT60%
Claude50%
Perplexity0%
Gemini47%

milwaukee·hvac

1 snapshot
Median score
75
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

minneapolis·hvac

1 snapshot
Median score
51
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
64%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT67%
Claude100%
Perplexity0%
Gemini87%

mobile·hvac

1 snapshot
Median score
97
of cited businesses
Top score
100
single best
Properties named
4
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

modesto·hvac

1 snapshot
Median score
63
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

nashville·hvac

1 snapshot
Median score
28
of cited businesses
Top score
90
single best
Properties named
14
unique, window
Avg coverage
100%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity100%
Gemini100%

new orleans·hvac

2 snapshots
Median score
70
of cited businesses
Top score
100
single best
Properties named
52
unique, window
Avg coverage
44%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT77%
Claude50%
Perplexity0%
Gemini50%

new york·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
99
unique, window
Avg coverage
21%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT60%
Claude24%
Perplexity0%
Gemini0%

ogden·hvac

1 snapshot
Median score
70
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

oklahoma city·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
99
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT77%
Claude74%
Perplexity0%
Gemini50%

omaha·hvac

1 snapshot
Median score
94
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

orlando·hvac

1 snapshot
Median score
96
of cited businesses
Top score
100
single best
Properties named
5
unique, window
Avg coverage
25%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude0%
Perplexity0%
Gemini0%

oxnard·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
42
unique, window
Avg coverage
42%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT54%
Claude64%
Perplexity0%
Gemini50%

park city·hvac

1 snapshot
Median score
89
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

philadelphia·hvac

2 snapshots
Median score
40
of cited businesses
Top score
100
single best
Properties named
107
unique, window
Avg coverage
49%
across 4 engines
📈 Top movers
  • Gen3 Electric & HVAC#9 → #6 (+3)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT77%
Claude70%
Perplexity0%
Gemini50%

phoenix·hvac

2 snapshots
Median score
100
of cited businesses
Top score
100
single best
Properties named
13
unique, window
Avg coverage
39%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT54%
Claude50%
Perplexity0%
Gemini50%

pittsburgh·hvac

2 snapshots
Median score
40
of cited businesses
Top score
100
single best
Properties named
92
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
  • Wade Heating & Cooling#11 → #1 (+10)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT74%
Claude74%
Perplexity0%
Gemini50%

portland·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
103
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
  • Jacobs Heating & Air Conditioning#4 → #7 (-3)
Per-engine coverage (avg over window)
ChatGPT80%
Claude70%
Perplexity0%
Gemini50%

providence·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
104
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT74%
Claude74%
Perplexity0%
Gemini50%

provo·hvac

1 snapshot
Median score
90
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

raleigh·hvac

1 snapshot
Median score
70
of cited businesses
Top score
100
single best
Properties named
5
unique, window
Avg coverage
25%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude0%
Perplexity0%
Gemini0%

reno·hvac

1 snapshot
Median score
73
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
72%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude87%
Perplexity0%
Gemini100%

richmond·hvac

1 snapshot
Median score
95
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

riverside·hvac

1 snapshot
Median score
100
of cited businesses
Top score
100
single best
Properties named
5
unique, window
Avg coverage
25%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude0%
Perplexity0%
Gemini0%

rochester·hvac

2 snapshots
Median score
55
of cited businesses
Top score
100
single best
Properties named
55
unique, window
Avg coverage
44%
across 4 engines
📈 Top movers
  • Hawn Heating & Air Conditioning#26 → #4 (+22)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT77%
Claude50%
Perplexity0%
Gemini50%

sacramento·hvac

1 snapshot
Median score
57
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

salt lake city·hvac

2 snapshots
Median score
100
of cited businesses
Top score
100
single best
Properties named
16
unique, window
Avg coverage
39%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT50%
Claude54%
Perplexity0%
Gemini50%

san antonio·hvac

2 snapshots
Median score
70
of cited businesses
Top score
100
single best
Properties named
53
unique, window
Avg coverage
43%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT70%
Claude50%
Perplexity0%
Gemini50%

san diego·hvac

2 snapshots
Median score
32
of cited businesses
Top score
100
single best
Properties named
113
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT74%
Claude74%
Perplexity0%
Gemini50%

san francisco·hvac

2 snapshots
Median score
35
of cited businesses
Top score
100
single best
Properties named
99
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT70%
Claude80%
Perplexity0%
Gemini50%

san jose·hvac

1 snapshot
Median score
93
of cited businesses
Top score
100
single best
Properties named
5
unique, window
Avg coverage
73%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini93%

sarasota·hvac

1 snapshot
Median score
53
of cited businesses
Top score
100
single best
Properties named
9
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini0%

savannah·hvac

1 snapshot
Median score
59
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

seattle·hvac

2 snapshots
Median score
40
of cited businesses
Top score
100
single best
Properties named
76
unique, window
Avg coverage
46%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT70%
Claude67%
Perplexity0%
Gemini47%

sedona·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
102
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT74%
Claude74%
Perplexity0%
Gemini50%

spokane·hvac

1 snapshot
Median score
36
of cited businesses
Top score
100
single best
Properties named
10
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

st louis·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
26
unique, window
Avg coverage
40%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT54%
Claude57%
Perplexity0%
Gemini50%

tampa·hvac

2 snapshots
Median score
40
of cited businesses
Top score
100
single best
Properties named
34
unique, window
Avg coverage
41%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT54%
Claude60%
Perplexity0%
Gemini50%

toledo·hvac

1 snapshot
Median score
64
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

tucson·hvac

2 snapshots
Median score
35
of cited businesses
Top score
100
single best
Properties named
88
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT67%
Claude84%
Perplexity0%
Gemini50%

tulsa·hvac

1 snapshot
Median score
51
of cited businesses
Top score
100
single best
Properties named
8
unique, window
Avg coverage
73%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude93%
Perplexity0%
Gemini100%

virginia beach·hvac

2 snapshots
Median score
40
of cited businesses
Top score
97
single best
Properties named
89
unique, window
Avg coverage
49%
across 4 engines
📈 Top movers
  • One Hour Heating & Air Conditioning#77 → #9 (+68)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT67%
Claude77%
Perplexity0%
Gemini50%

washington dc·hvac

2 snapshots
Median score
32
of cited businesses
Top score
100
single best
Properties named
81
unique, window
Avg coverage
48%
across 4 engines
📈 Top movers
  • F.H. Furr#24 → #1 (+23)
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT67%
Claude74%
Perplexity0%
Gemini50%

wichita·hvac

1 snapshot
Median score
32
of cited businesses
Top score
100
single best
Properties named
7
unique, window
Avg coverage
75%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT100%
Claude100%
Perplexity0%
Gemini100%

woodstock ny·hvac

1 snapshot
Median score
68
of cited businesses
Top score
100
single best
Properties named
6
unique, window
Avg coverage
72%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT87%
Claude100%
Perplexity0%
Gemini100%

worcester·hvac

2 snapshots
Median score
50
of cited businesses
Top score
100
single best
Properties named
108
unique, window
Avg coverage
50%
across 4 engines
📈 Top movers
none in window
📉 Top droppers
none in window
Per-engine coverage (avg over window)
ChatGPT80%
Claude70%
Perplexity0%
Gemini50%

Methodology

Each market is probed with 15 hand-curated holiday-search queries against four AI engines (ChatGPT via OpenRouter, Claude via OpenRouter, Perplexity sonar-pro, Gemini via OpenRouter). Engine coverage = % of queries where the engine returned at least one specific business name (not a refusal or generic OTA link). Rank movement compares the earliest and latest snapshot inside the4-week trailing window. Data frozen at 2026-W26 window end — this URL will never be edited.

Snapshots feeding this report: 2026-06-01 → 2026-06-28