Utah Groundwater Temperatures

Average Yearly Groundwater Temperatures for Cities in Utah

Average groundwater temperatures play an important role in determining which tankless water heater to purchase. The reason for this is because in colder climates the groundwaters starting temperature is colder than in warmer climates. This causes the tankless water heater to work harder to increase the water temperature in colder climates, which in turn causes the flow rate to decrease in parallel. For example, if the starting water temperature is 52°F and you need to raise the water temperature to 110°F. Then your tankless water heater needs to be capable of raising the water temperature by 58°F and still have enough flow to support the fixtures you want to simultaneously run.

 

How Flow Rates are Affected by Temperature

In the example below, you can see the impact that temperature has on flow rates. This example is based on a tankless water heater that has a flow rate rated for 8 GPM.

 

Temperature Zone Efficiency
+71 °F 100% (8 GPM)
61 - 70 °F 73% (5.8 GPM)
51 - 60 °F 58% (4.6 GPM)
41 - 50 °F 48% (3.8 GPM)
< 40 °F 41% (3.2 GPM)

The efficiency percentage is an average based on Siebel TempraRinnai RU199, and ECO90 tankless water heater models.

 

Flow Rates of Appliances

Based on the corresponding flow rates for each appliance that are listed. A tankless water heater that is rated with a flow rate of 8 GPM (gallons per minute) is capable of running these items at the same time in regions with an average groundwater

temperature of 72°F.

 

Shower = 3 GPM

Kitchen Sink = 1.5 GPM

Washing Machine = 2.5 GPM

Total = 7 GPM

 

If you take this same exact tankless water heater and install it in a region that has an average groundwater temperature of 52°F (green zone). This will lower that tankless water heater's max GPM output to 4.64 GPM.

 

Shower = 3 GPM

Kitchen Sink = 1.5 GPM

Total = 4.5 GPM

 

As you can see before purchasing a tankless water heater it's important to know the impact temperature has on its ability to heat water and its effect on the total GPM needs of your household.

 

Utah Groundwater Temperature Yearly Average

City and Zip Code Groundwater Temperatures

Alpine

84004

47°F

American Fork

84003

49°F

Blanding

84511

48°F

Bountiful

84010

49°F

Brigham City 

84720 | 84721

50°F

Cedar City

84720 | 84721

52°F

Draper

84020

49°F

Eagle Mountain

84005

51°F

Ephraim

84627

50°F

Goshen

84633

48°F

Herriman

84096

48°F

Hurricane 

84737

50°F

Layton

84040 | 84041

49°F

Lehi

84043

52°F

Logan

84321 | 84341

52°F

Manti

84642

46°F

Mapleton

84664

53°F

Meadow

84325

51°F

Morgan

84050

48°F

Midvale

84047

52°F

Ogden

84404 | 84401 | 84403 | 84405

52°F

Orem

84057 | 84058 | 84097

51°F

Park City

84060 | 84098

52°F

Payson

84651

52°F

Pleasant Grove

84062

53°F

Provo

84604 | 84606 | 84601

53°F

Riverton

84065

51°F

Salem

84653

51°F

Salt Lake City

84118 | 84121 | 84123 | 84106 | 84116 | 84107 | 84115 | 84104 | 84117 | 84109 | 84105 | 84108 | 84124 | 84103 | 84102 | 84111 | 84101 | 84112 | 84113 | 84180

53°F

Sandy

84070 | 84092 | 84093 | 84094

52°F

Santaquin

84655

50°F

Saratoga Springs 

84045

50°F

South Jordan

84095

51°F

Spanish Fork

84660

51°F

Springville

84663

50°F

St. George

84770 | 84790 

52°F

Tooele

84074

51°F
Vernal Utah
84078
53°F

Washington City

84780
52°F

West Jordan

84084 | 84088

51°F

West Valley City

84119 | 84120 | 84128

54°F

Woods Cross 

84087

51°F

What Tankless Water Heater Should you buy if you Live in Utah?

Since Utah's average temperature range is between 46°F and 54°F. It is recommended that you select a green zone or light blue zone tankless water heater. To see the recommended tankless water heaters that apply to the light blue and green zone temperatures please follow the link that corresponds to the region of your average city temperature.

 

Temperature zone Recommended Tankless Water Heater
< 40 °F Tankless Water Heater Recommendations
41 - 50 °F Tankless Water Heater Recommendations
51 - 60 °F Tankless Water Heater Recommendations
61 - 70 °F Tankless Water Heater Recommendations
+71 °F Tankless Water Heater Recommendations
 

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