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Geothermal & You

Residential Operating Costs

Atlanta, Georgia

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

9,506
8,566

0
0

$570
$514

Air-Air

12 SEER
14 SEER

17,568
16,532

0
0

$1,054
$992

Gas

80%/10 SEER
90%/12 SEER

6,791
6,222

1,024
888

$1,022
$906

Propane

80%/10 SEER
90%/12 SEER

6,791
6,222

1,114
966

$1,521
$1,339

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

11,705
11,136

533
533

$1,235
$1,201

Top

 

 

Boston, Massachusetts

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

12,211
11,439

0
0

$733
$686

Air-Air

12 SEER
14 SEER

21,089
19,700

0
0

$1,265
$1,182

Gas

80%/10 SEER
90%/12 SEER

4,358
4,035

1,465
1,261

$1,141
$999

Propane

80%/10 SEER
90%/12 SEER

4,358
4,035

1,593
1,371

$1,855
$1,614

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

10,244
9,921

805
805

$1,420
$1,400

Top

 

 

Charlotte, North Carolina

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

9,886
9,044

0
0

$593
$543

Air-Air

12 SEER
14 SEER

18,731
17,333

0
0

$1,124
$1,040

Gas

80%/10 SEER
90%/12 SEER

7,181
6,580

1,088
942

$1,084
$960

Propane

80%/10 SEER
90%/12 SEER

7,181
6,580

1,183
1,024

$1,614
$1,419

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

12,096
11,495

577
577

$1,303
$1,267

Top

 

 

Detroit, Michigan

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

13,346
12,597

0
0

$801
$756

Air-Air

12 SEER
14 SEER

23,789
22,240

0
0

$1,427
$1,334

Gas

80%/10 SEER
90%/12 SEER

4,941
4,576

1,627
1,404

$1,273
$1,117

Propane

80%/10 SEER
90%/12 SEER

4,941
4,576

1,770
1,528

$2,066
$1,802

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

10,793
10,428

920
920

$1,568
$1,546

Top

 

 

Houston, Texas

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

13,346
12,597

0
0

$801
$756

Air-Air

12 SEER
14 SEER

23,789
22,240

0
0

$1,427
$1,334

Gas

80%/10 SEER
90%/12 SEER

4,941
4,576

1,627
1,404

$1,273
$1,117

Propane

80%/10 SEER
90%/12 SEER

4,941
4,576

1,770
1,528

$2,066
$1,802

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

10,793
10,428

920
920

$1,568
$1,546

Top

 

Indianapolis, Indiana

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

12,102
11,458

0
0

$726
$687

Air-Air

12 SEER
14 SEER

21,850
21,061

0
0

$1,311
$1,264

Gas

80%/10 SEER
90%/12 SEER

5,548
5,117

1,435
1,238

$1,194
$1,050

Propane

80%/10 SEER
90%/12 SEER

5,548
5,117

1,561
1,346

$1,894
$1,653

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

10,989
10,558

800
800

$1,459
$1,433

Top

 

 

Los Angeles, California

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

7,762
7,077

0
0

$466
$425

Air-Air

12 SEER
14 SEER

14,914
13,869

0
0

$895
$832

Gas

80%/10 SEER
90%/12 SEER

4,018
3,697

992
839

$836
$725

Propane

80%/10 SEER
90%/12 SEER

4,018
3,697

1,079
913

$1,320
$1,135

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

8,769
8,448

518
518

$1,044
$1,025

Top

 

Miami, Florida

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

10,285
8,994

0
0

$617
$540

Air-Air

12 SEER
14 SEER

18,334
16,671

0
0

$1,100
$1,000

Gas

80%/10 SEER
90%/12 SEER

15,157
13,785

305
288

$1,092
$1,000

Propane

80%/10 SEER
90%/12 SEER

15,157
13,785

332
313

$1,242
$1,140

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

18,977
17,605

65
65

$1,204
$1,121

Top

 

 

Minneapolis, Minnesota

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

16,935
15,948

0
0

$1,106
$957

Air-Air

12 SEER
14 SEER

29,314
27,796

0
0

$1,759
$1,668

Gas

80%/10 SEER
90%/12 SEER

4,130
3,857

1,896
1,641

$1,385
$1,216

Propane

80%/10 SEER
90%/12 SEER

4,130
3,857

2,062
1,785

$2,309
$2,016

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

10,232
9,959

1,096
1,096

$1,710
$1,694

Top

 

 

Oklahoma City, Oklahoma

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

11,005
9,824

0
0

$660
$589

Air-Air

12 SEER
14 SEER

20,793
19,282

0
0

$1,248
$1,157

Gas

80%/10 SEER
90%/12 SEER

7,723
7,080

1,190
1,030

$1,177
$1,043

Propane

80%/10 SEER
90%/12 SEER

7,723
7,080

1,266
1,120

$1,730
$1,545

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

12,669
12,026

648
648

$1,408
$1,370

Top

 

 

Omaha, Nebraska

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

14,264
13,220

0
0

$856
$793

Air-Air

12 SEER
14 SEER

25,269
23,707

0
0

$1,516
$1,422

Gas

80%/10 SEER
90%/12 SEER

5,752
5,312

1,588
1,374

$1,298
$1,143

Propane

80%/10 SEER
90%/12 SEER

5,752
5,312

1,727
1,494

$2,072
$1,813

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

11,444
11,004

897
897

$1,584
$1,557

Top

 

 

Portland, Oregon

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

10,790
9,918

0
0

$647
$595

Air-Air

12 SEER
14 SEER

18,362
17,543

0
0

$1,102
$1,053

Gas

80%/10 SEER
90%/12 SEER

2,834
2,649

1,461
1,348

$1,047
$968

Propane

80%/10 SEER
90%/12 SEER

2,834
2,649

1,589
1,354

$1,759
$1,513

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

8,366
8,181

818
818

$1,320
$1,309

Top

 

 

Richmond, Virginia

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

9,829
8,893

0
0

$590
$534

Air-Air

12 SEER
14 SEER

18,465
17,093

0
0

$1,108
$1,026

Gas

80%/10 SEER
90%/12 SEER

6,550
6,006

1,095
944

$1,050
$927

Propane

80%/10 SEER
90%/12 SEER

6,550
6,006

1,192
1,027

$1,585
$1,387

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

11,567
11,023

575
575

$1,269
$1,236

Top

 

 

St. Louis, Missouri

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

10,981
9,859

0
0

$659
$592

Air-Air

12 SEER
14 SEER

20,875
19,399

0
0

$1,253
$1,164

Gas

80%/10 SEER
90%/12 SEER

6,867
6,301

1,206
1,042

$1,136
$1,003

Propane

80%/10 SEER
90%/12 SEER

6,867
6,301

1,312
1,134

$1,724
$1,512

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

12,163
11,597

643
643

$1,373
$1,339

Top

 

 

Salt Lake City, Utah

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

13,221
12,226

0
0

$793
$734

Air-Air

12 SEER
14 SEER

22,920
21,351

0
0

$1,375
$1,281

Gas

80%/10 SEER
90%/12 SEER

5,174
4,785

1,575
1,354

$1,255
$1,100

Propane

80%/10 SEER
90%/12 SEER

5,174
4,785

1,712
1,472

$2,023
$1,760

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

10,784
10,395

891
891

$1,538
$1,515

Top

 

 

San Francisco, California

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

8,271
8,055

0
0

$496
$483

Air-Air

12 SEER
14 SEER

15,336
14,294

0
0

$920
$858

Gas

80%/10 SEER
90%/12 SEER

3,169
2,938

1,193
1,013

$906
$784

Propane

80%/10 SEER
90%/12 SEER

3,169
2,938

1,298
1,102

$1,488
$1,279

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

8,228
7,997

652
652

$1,146
$1,132

Top

 

Tampa, Florida

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

10,362
8,979

0
0

$622
$539

Air-Air

12 SEER
14 SEER

19,151
16,744

0
0

$1,149
$1,005

Gas

80%/10 SEER
90%/12 SEER

14,589
13,277

453
410

$1,147
$1,043

Propane

80%/10 SEER
90%/12 SEER

14,589
13,277

493
446

$1,368
$1,043

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

18,566
17,254

164
164

$1,278
$1,199

Top

 

Trenton, New Jersey

 

System Type

Efficiency

Total Annual

Sample Annual Costs

kWh

ccf/gal

6/ kWh; 60/ ccf; $1.00/gal

Geothermal

3.5 ton 1 speed
4.0 ton 2 speed

10,857
10,061

0
0

$651
$604

Air-Air

12 SEER
14 SEER

19,604
18,261

0
0

$1,176
$1,096

Gas

80%/10 SEER
90%/12 SEER

4,860
4,480

1,286
1,106

$1,063
$932

Propane

80%/10 SEER
90%/12 SEER

4,860
4,480

1,399
1,203

$1,691
$1,472

Oil
(W/elecDHW)

80%/10 SEER
80%/12 SEER

10,310
9,930

694
694

$1,313
$1,290

 
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