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System Replacement

Geothermal Heat Pump Replacement in Denver

Keep your loop field, swap the unit, and get a system sized correctly for your home’s actual load.

  • Loop Field Assessment
  • Altitude-Adjusted Sizing
  • Written Estimate First
  • Post-Install Output Check
Geothermal Heat Pump Replacement carried out by a professional geothermal heat pump installer

What Goes Wrong

The mistakes that turn a straightforward replacement into a costly redo

Skipped Loop Testing

Installing a new unit on an untested loop risks pairing a high-efficiency unit with a field that can’t deliver adequate flow.

Pressure & Flow Check First

A pressure test and flow rate check happen before any equipment is ordered, confirming the loop can carry the new unit’s BTU demand.

Copied Original Sizing

Replacing like-for-like locks in the original undersizing error, a common finding in older Denver ground-source installations.

Fresh Load Calculation

The replacement unit is sized against your home’s current sq ft, insulation values, and altitude, not the original installer’s numbers.

Permit Gaps

Replacement units still require permits in most Colorado counties; skipping them can void equipment warranties and block future home sales.

County Requirements Identified

We identify the permit requirements for your jurisdiction upfront and include them in the written estimate so nothing is discovered mid-project.

No Output Verification

Without a post-install BTU check, an incorrectly commissioned unit can run for years below its rated capacity without anyone noticing.

Rated Capacity Confirmed

A post-install output check confirms the new unit is delivering its rated BTU capacity before the project is closed out.

System Replacement

Replace your ground-source unit without replacing a loop field that still performs

An existing loop field in good condition can often support a new, higher-efficiency unit, avoiding the largest cost of a full reinstall.

Request an Evaluation

Before a replacement unit is specified, the existing loop field needs a pressure test and flow rate check. A loop that holds pressure and delivers adequate flow can be reused, which removes the most expensive line item from the project. We arrange that assessment as the first step, not an afterthought.

The new unit is sized using an altitude-adjusted load calculation for your home’s current sq ft and insulation values. If the original system was undersized, a common finding in older Denver installations, the replacement is an opportunity to correct that without touching the loop field.

Permitting for a replacement unit still applies in most Colorado jurisdictions. We identify the requirements for your county, include them in the written estimate, and arrange a post-install BTU output check to confirm the new unit is delivering its rated capacity before the project is signed off.

Why Choose Us

Why Denver Geothermal for your ground-source replacement?

Every replacement starts with an evaluation, not a sales call, here is what that means in practice.

Evaluation Before Equipment

Every enquiry starts with a system evaluation covering load, existing equipment condition, and altitude-adjusted sizing.

Itemised Written Estimate

The estimate lists equipment, installation scope, loop modifications, permits, and timeline, every line item, nothing verbal.

Licensed Installer Arranged

We connect you with a vetted independent local installer who holds the Colorado credentials required for ground-source work.

Post-Install BTU Verification

A confirmed output check closes every project, so you know the unit performs to spec before the final sign-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 replacement unit

Request an Evaluation

  1. 01

    Request an Evaluation

    Tell us about the property and we arrange a licensed installer to assess the loop field, existing unit, and current load.

  2. 02

    Review Your Estimate

    You receive an itemised written estimate covering equipment, any loop modifications, permits, and a confirmed installation timeline.

  3. 03

    Confirm Output & Sign Off

    After installation, a BTU output check verifies the new unit is performing at rated capacity before the project is closed.

Pricing Estimates

Typical Geothermal Heat Pump Replacement Prices

JobTypical cost
Indoor heat pump unit replacement$4,500-$11,000
Geothermal heat pump replacement$11,700-$25,400
Full system replacement$25,000-$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

Questions about replacing a ground-source heat pump in Denver

How do I know if I need a full replacement or just a repair?

If the indoor unit fails repeatedly or can no longer keep the home comfortable, replacement is usually the better path. The decision starts with a loop pressure test and a check of the indoor components, compressor, heat exchanger, circulating pump, to identify exactly where the failure is.

Can the existing ground loop be reused?

Often yes. If the loop passes a pressure test and the flow rate is within the manufacturer’s range, the buried high-density polyethylene pipe can support a new indoor unit. Reusing the loop avoids excavation and keeps the project significantly smaller.

What happens if I delay replacing a failing unit?

A unit with a slow refrigerant leak or a failing compressor will short-cycle, raising energy use and putting extra strain on the circulating pump. Delaying through a Denver winter risks a full heating failure when outdoor temperatures are at their lowest.

Is there still a geothermal tax credit available in 2026?

The federal residential geothermal tax credit does not apply to systems placed in service after the end of 2025. Colorado utility rebate programs may still apply to qualifying replacement equipment, the installer checks current programs before the estimate is issued.

Will a replacement unit work with my existing ductwork?

In most cases yes, but a sizing check at replacement time confirms the new unit’s airflow requirements match the existing duct layout. If the ductwork is undersized for the new unit’s output, that is flagged in the written estimate before work begins.

How is the replacement unit sized for my home?

The installer runs an altitude-adjusted load calculation based on the home’s square footage, insulation, and window area. Denver’s elevation affects heating capacity, so matching the nameplate of the old unit is not a reliable method.

More questions about Geothermal Heat Pump Replacement?

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