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Water-Source Systems

Open Loop Installation in Denver

Stable groundwater temperatures mean high efficiency, once water rights and discharge permits are confirmed.

  • System Evaluation First
  • Itemised Written Estimate
  • Post-Install Commissioning
Open Loop Installation carried out by a professional geothermal heat pump installer

What Goes Wrong

The details that sink an open loop project

Open loop installs fail in predictable ways, usually because compliance and flow rate are checked too late.

Unverified Flow Rate

A well that looks adequate on paper can fall short of the 1.5 GPM-per-ton minimum under sustained draw, leaving the system undersized.

Flow Rate Confirmed First

We verify sustained yield against the calculated BTU load before an installer is engaged or equipment is ordered.

Permit Gap Mid-Project

Colorado discharge rules vary by county and water source, discovering a missing permit after excavation starts is an expensive correction.

Permits Identified Upfront

We identify every applicable water rights and discharge permit before scoping begins, so no compliance gap surfaces mid-project.

Skipped Commissioning

An open loop system that is never measured against its design figures can run at reduced output for years without the homeowner knowing.

Measured at Completion

Post-install commissioning records actual water flow rate and BTU output, confirming the system hits rated capacity before the project closes.

Altitude-Ignored Sizing

At Denver’s elevation, equipment sized without altitude adjustment loses output on the coldest nights, the nights it matters most.

Altitude-Adjusted Load Calc

Every BTU load calculation accounts for Denver’s elevation so the heat exchanger and pump are sized for actual local conditions.

Scope of Work

What an open loop installation covers

From water source assessment to discharge line routing, the written estimate covers every component of the system.

Well-Water Open Loop

Groundwater drawn from an existing or new well, sized to the BTU load with sustained yield confirmed before equipment is specified.

Surface-Water Open Loop

Intake from a pond, stream, or irrigation ditch where water rights allow, with discharge routing planned to meet county requirements.

Permit & Compliance Coordination

Water rights verification, discharge permit applications, and county-specific documentation handled before any excavation is scheduled.

Heat Exchanger & Pump Sizing

Intake pump specification and heat exchanger selection matched to the confirmed flow rate and altitude-adjusted BTU demand.

Discharge Line Routing

Planned to meet county discharge rules from day one.

Post-Install Commissioning

Flow rate and BTU output measured against design figures.

Written Itemised Estimate

Every permit cost and equipment line item listed upfront.

How It Works

Open loop installation with water rights and discharge compliance confirmed first

Open loop systems offer high efficiency where adequate water supply exists, but Colorado water law and discharge rules have to be verified before any work starts.

An open loop system pumps groundwater or surface water through the heat exchanger, extracts or rejects heat, then discharges the water. The efficiency is high because groundwater temperature is stable, but the system only works where water supply flow rate meets the BTU demand, typically 1.5 gallons per minute per ton of capacity.

Colorado water rights and discharge regulations vary by county and water source. We identify the applicable permits and confirm that the available flow rate supports the calculated BTU load before an installer is engaged. Discovering a permit gap after excavation starts is an expensive problem to fix.

The written estimate covers well or intake pump specification, heat exchanger sizing, discharge line routing, and all permit costs. Post-install commissioning measures actual water flow rate and BTU output against the design figures, confirming the system is performing at rated capacity before the project closes.

Why Us

Why Denver Geothermal for open loop installation

Open loop projects carry more regulatory complexity than closed loop, here is how we keep that complexity from becoming your problem.

Evaluation Before Commitment

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

Itemised Estimate, No Surprises

The written estimate lists every line item: equipment, permit costs, installation scope, and timeline, so nothing is discovered at invoice.

Licensed Installers Arranged

We connect customers with vetted independent local partners who hold the licenses Colorado requires for water-source heat pump work.

Compliance Confirmed Upfront

Water rights and discharge permit requirements are identified before scoping begins, not after excavation has already started.

Performance Verified at Close

Post-install commissioning confirms actual BTU output and flow rate match the design figures 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 open loop system

  1. 01

    Request an Evaluation

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

  2. 02

    Review Your Written Estimate

    You receive an itemised estimate covering equipment, permit costs, discharge line routing, and a project timeline before anything is booked.

  3. 03

    Commission & Confirm Output

    After installation, commissioning measures actual water flow rate and BTU output against design figures to confirm rated capacity is reached.

Pricing Estimates

Typical Open Loop Installation Prices

JobTypical cost
Small open loop installation$14,000-$20,000
Typical open loop installation$18,000-$30,000
Larger open loop system$25,000-$40,000
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

Open loop installation questions answered

How do I know if my property qualifies for an open loop system?

The main factors are groundwater supply, water quality, and whether the site can handle the intake and discharge setup. A water flow test and site review confirm whether the well meets the minimum sustained flow rate and whether a compliant discharge point exists on the lot.

What happens if I delay the site assessment?

Without a flow test and water quality check, there is no way to confirm the well can sustain the required gallons per minute. Ordering equipment before that check risks specifying the wrong unit size or discovering a disqualifying condition after costs are already committed.

What water quality problems can affect the system?

Iron, calcium, and manganese are common in Front Range aquifer water and cause scale buildup inside the heat exchanger. Depending on the water chemistry results, a sediment filter, softener, or sacrificial anode is added to the installation scope to protect the equipment.

Does Colorado have rules about where the discharge water goes?

Yes. Colorado groundwater discharge regulations vary by county and govern how return water can be released. The site review confirms a compliant discharge point, return well, dry well, or surface outlet, before any equipment is specified.

Is open loop the lowest-maintenance option?

Not always. Open loop systems depend on water quality and flow rate, so they can need more attention than a sealed loop system if the water carries minerals or sediment. Maintenance needs should be compared against closed loop before a final decision is made.

More questions about Open 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