Our Work: Real HVAC Jobs Across Central Oklahoma

Real Jobs. Real Neighbors.

47 years on tools. Master HVAC license. 4.8 stars, 300+ Google reviews. Each pin is a real Hartzell’s repair or install across Central Oklahoma. Addresses offset for privacy.

Hartzell’s HQ Left a Google review Geothermal install New HVAC install 2026 service 2025 service 2024 service Approved estimate Pending estimate

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Call 405-375-4822 or book online. 4.8 stars / 300+ Google reviews. Same-day service across Central Oklahoma.

Browse Our Work by ZIP

Kingfisher, OK 73750
2212 HVAC jobs
Okarche, OK 73762
283 HVAC jobs
Hennessey, OK 73742
204 HVAC jobs
Watonga, OK 73772
172 HVAC jobs
Oklahoma City, OK 73101
87 HVAC jobs
Dover, OK 73734
44 HVAC jobs
Enid, OK 73701
43 HVAC jobs
Canton, OK 73724
35 HVAC jobs
Crescent, OK 73028
32 HVAC jobs
Piedmont, OK 73078
29 HVAC jobs
Durant, OK 74701
28 HVAC jobs
Yukon, OK 73099
24 HVAC jobs
Cashion, OK 73016
20 HVAC jobs
Edmond, OK 73003
18 HVAC jobs
El Reno, OK 73036
18 HVAC jobs
Okeene, OK 73763
18 HVAC jobs
Calumet, OK 73014
18 HVAC jobs
Fairview, OK 73737
16 HVAC jobs
Geary, OK 73040
16 HVAC jobs
Union City, OK 73090
10 HVAC jobs
Loyal, OK 73756
9 HVAC jobs
Clinton, OK 73601
9 HVAC jobs
Guthrie, OK 73044
7 HVAC jobs
Blackwell, OK 74631
4 HVAC jobs
Bethany, OK 73008
4 HVAC jobs
Chickasha, OK 73018
3 HVAC jobs (see map)
Harrah, OK 73045
3 HVAC jobs (see map)
Midwest City, OK 73110
3 HVAC jobs (see map)
Medford, OK 73759
3 HVAC jobs (see map)
Waukomis, OK 73773
3 HVAC jobs (see map)
Elk City, OK 73644
2 HVAC jobs (see map)
Blanchard, OK 73010
1 HVAC job (see map)
Norman, OK 73026
1 HVAC job (see map)
Luther, OK 73054
1 HVAC job (see map)
Mustang, OK 73064
1 HVAC job (see map)
Goldsby, OK 73093
1 HVAC job (see map)
Weatherford, OK 73096
1 HVAC job (see map)
Garber, OK 73738
1 HVAC job (see map)
Hitchcock, OK 73744
1 HVAC job (see map)
Omega, OK 73764
1 HVAC job (see map)
Woodward, OK 73801
1 HVAC job (see map)
Ponca City, OK 74601
1 HVAC job (see map)
Billings, OK 74630
1 HVAC job (see map)
Hunter, OK 74640
1 HVAC job (see map)

Related commercial and service pages

For a residential geothermal example, see the Canton 3-ton ClimateMaster geothermal case study.

For another Oklahoma geothermal example, review the Geary 5-ton ClimateMaster geothermal case study.

For a lake-area project, see the Lake Texoma area geothermal case study.

For a northwest Oklahoma example, see the Okeene geothermal case study.

For a two-system project, review the Piedmont two-system geothermal and well-drilling case study.

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