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Drilled Loop Fields

Vertical Loop Installation in Denver

Stable ground temperature at depth, sized to your BTU load, with a written estimate before any drilling starts.

  • Load Calc First
  • Written Estimate
  • Post-Install Check
Vertical Loop Installation carried out by a professional geothermal heat pump installer

What Goes Wrong

Where vertical loop projects fail, and how to avoid it

The difference between a loop field that performs and one that falls short is almost always in the pre-drill calculations.

Generic Depth Tables

Using national average thermal conductivity data instead of Denver-area geology routinely undersizes the loop field.

Local Geology Data

Boring depth is calculated from conductivity data specific to your parcel, sandstone foothills or alluvial plains soil.

Altitude-Ignored Sizing

A BTU load calculated at sea level overstates heat pump output; Denver’s elevation requires a derating adjustment.

Altitude-Adjusted BTU Load

Every load calculation is adjusted for Denver’s elevation so the boring count matches actual heating and cooling demand.

No Pressure Test

Skipping post-drill loop pressure testing leaves leaks or flow restrictions undetected until the system underperforms in winter.

Pressure & Flow Verification

After grouting, loop pressure is tested and flow rate is measured before the system is commissioned and the project closed.

Verbal-Only Scope

Without a written boring plan, grout spec, and permit list, costs and depth can shift after drilling has already begun.

Itemised Written Estimate

The estimate lists boring count, depth, grout specification, header sizing, freeze-protection fluid, and county permit fees.

Drilled Loop Fields

Vertical loop installation for lots where horizontal trenching isn’t an option

Vertical borings access stable ground temperature at depth, making them the standard loop field choice for most Denver-area residential lots.

Vertical loops are drilled to depths of 150-400 feet, where ground temperature holds steady regardless of surface weather. The number of borings required depends on your home’s BTU load and the thermal conductivity of the subsurface geology, both are calculated before a boring plan is submitted for permitting.

Denver-area geology varies from consolidated sandstone near the foothills to alluvial soils on the plains. Thermal conductivity testing or published geological data for your area informs the boring depth calculation. Using a national average instead of local data risks undersizing the loop field.

The written estimate lists boring count, depth per boring, grout specification, header pipe sizing, freeze protection fluid type, and applicable county permit fees. After installation, loop pressure is tested and flow rate is measured. BTU output is confirmed against the load calculation before the project is closed.

Why Choose Us

Why Denver Geothermal for vertical loop installation?

Every step from first enquiry to post-install check is structured so nothing is left to assumption.

Evaluation Before Commitment

Every enquiry starts with a system evaluation, load, existing equipment, and altitude-adjusted sizing, before any work is booked.

Itemised Written Estimate

The estimate covers boring count, depth, grout spec, header sizing, freeze-protection fluid, and all applicable permit fees.

Licensed Local Installers

We arrange vetted independent installers who hold the permits and carry the insurance required for drilling in Colorado.

Post-Install Performance Check

Loop pressure, flow rate, and BTU output are all confirmed against the original load calculation before the project is signed off.

A completed geothermal heat pump installation job at a house
A finished geothermal heat pump installation project

The Process

From first enquiry to a commissioned loop field

  1. 01

    Request an Evaluation

    Tell us about the property and we arrange an altitude-adjusted load calculation and site assessment with a licensed installer.

  2. 02

    Review Your Estimate

    You receive an itemised written estimate covering boring count, depth, grout spec, permit fees, and a project timeline.

  3. 03

    Install & Verify

    After drilling and grouting, loop pressure is tested, flow rate is measured, and BTU output is confirmed before close-out.

Pricing Estimates

Typical Vertical Loop Installation Prices

JobTypical cost
Small vertical loop install$20,000-$30,000
Typical vertical loop installation$25,000-$45,000
Deep or complex vertical loop field$35,000-$60,000
These prices are estimates and often vary with the condition, size and scope of each job. Message or call us for a free, no-obligation quote.
See all prices

Common Questions

Vertical loop installation, questions answered plainly

How do I know if my Denver lot can support vertical drilling?

A site evaluation checks drill rig access against your side yard width, overhead clearances, and any shared driveway constraints. Front Range ground conditions, soft overburden near the surface, harder bedrock at depth, are also assessed to estimate borehole depth before any scope is written.

What happens if I delay getting the loop installed?

Delaying means continuing to run an existing system at its current operating cost. If the existing system fails before a replacement is in place, you lose the option to plan the installation on your schedule, emergency replacements rarely allow time for proper site evaluation and depth sizing.

How deep do the boreholes need to be?

Depth typically ranges from 150 to 400 feet per borehole, depending on the home’s load calculation and the ground’s thermal conductivity at your specific site. Front Range bedrock conditions can affect drilling time at greater depths, which is why depth is estimated during the site evaluation.

What is the loop pressure test and why does it matter?

After all boreholes are grouted and headers are connected, the full loop field is pressurised and held at a specified pressure to confirm there are no leaks. A loop with an undetected leak will lose circulating fluid volume over time, reducing heat transfer and raising operating costs.

More questions about Vertical Loop Installation?

Arrange Your Geothermal System Evaluation

Tell us about the property and we’ll arrange a licensed installer to assess the site and deliver a written scope before anything is booked.

Request an Evaluation