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November 3, 2025

Colorado Springs Heat Pump Not Cooling? 5 Fixes

Estimated Read Time: 9 minutes

Heat pump not cooling your home when you need it most? You are not alone. In Colorado Springs’ big temperature swings, a heat pump can struggle if a simple setting is off or a key part is wearing out. Below are five common reasons your heat pump is not cooling, quick DIY checks, and when to call the pros. If you need help today, we offer same‑day diagnostics and straightforward repair options.

Why your heat pump is not cooling: the quick take

If your heat pump is running but not cooling, start with the basics: thermostat mode, airflow, and outdoor unit condition. If those check out, refrigerant charge, sensors, and electrical parts are likely. Heat pumps rely on balanced airflow and precise refrigerant levels to move heat. A small fault can cause warm air, long run times, or rooms that never reach setpoint.

Colorado Springs adds a twist. High altitude reduces air density, which changes airflow targets. Sudden afternoon storms and dust can clog outdoor coils. Those local details are why sizing, airflow tuning, and seasonal cleanings matter so much here.

Reason 1: Thermostat or mode settings are incorrect

A surprisingly common cause of a heat pump not cooling is the thermostat set to “Heat” or “Auto” with a narrow deadband. In summer, “Cool” mode with a temperature at least 3 degrees below indoor readings is best. Also verify the fan setting. “Auto” is usually better than “On,” which can recirculate warm air between cooling cycles.

Smart thermostats can complicate things with eco modes, hold settings, or time‑of‑use schedules. If your heat pump also has auxiliary heat, make sure it is not locked in heat or emergency heat.

Quick checks:

  1. Set mode to “Cool,” fan to “Auto,” and a setpoint 3–5 degrees lower than current indoor temperature.
  2. Replace thermostat batteries if applicable.
  3. Confirm Wi‑Fi schedules or eco settings are not overriding your command.

If settings are correct and the heat pump still is not cooling, move to airflow.

Reason 2: Dirty filters or blocked airflow

Restricted airflow cripples cooling performance. A clogged filter, blocked return grille, closed supply registers, or a matted indoor coil will reduce heat transfer and can cause icing. At altitude, we target precise static pressure and cfm per ton. Even modest dirt loads can tip the balance.

What to check:

  1. Replace a dirty filter. Use the correct size and MERV. Overly restrictive filters can hurt airflow.
  2. Open all supply registers and clear furniture or rugs from returns.
  3. Look for dust buildup at the indoor coil or blower. If you see frost or heavy dirt, turn the system off and call a pro.

During tune‑ups we inspect safety, clean coils, check condensate drains and lines, lubricate moving parts, change filters, and verify refrigerant levels. Routine maintenance is the key to consistent, efficient operation and prevents mid‑season breakdowns.

Reason 3: Low refrigerant or a refrigerant imbalance

If your heat pump is not cooling after airflow and settings are correct, refrigerant issues are likely. Low charge, a slow leak, or a metering problem reduces capacity and can freeze coils. Signs include long runtimes, lukewarm supply air, hissing at the indoor unit, oil stains at fittings, or frost on the outdoor coil.

What a technician does:

  1. Perform full‑system diagnostics with pressure, temperature, and superheat/subcooling readings under steady‑state conditions.
  2. Check for leaks at service valves, braze joints, and coils. EPA rules require proper handling of refrigerants and repair or recovery.
  3. Correct the charge per manufacturer specs and verify performance in both heating and cooling modes.

We use factory‑authorized components and our trucks are stocked to complete most repairs in one visit. After a repair, we test in cooling and heating, verify airflow, and recalibrate thermostats before we leave.

Reason 4: Frozen outdoor unit or iced indoor coil

Ice is a symptom, not the root cause. Dirt, weak airflow, low refrigerant, or a stuck reversing valve can lead to freezing. In cooling season, a heat pump with a heavy frost pattern cannot shed heat. You will feel warm air at the vents and see poor condensate flow.

What to do now:

  1. Turn the system off to let ice melt. Do not chip it off.
  2. Replace the filter and ensure all vents are open.
  3. Clear vegetation and debris at least 18–24 inches around the outdoor unit.

A professional will test defrost controls, sensors, blower speed, and charge. If icing repeats, deeper diagnostics are needed to protect the compressor.

Reason 5: Electrical faults, sensor errors, or failing components

Heat pumps depend on sensors and electrical components to shift between heating and cooling. A stuck reversing valve, failed capacitor, weak compressor, or faulty outdoor fan can make the system run without cooling. Electrical issues often show up as intermittent operation, tripped breakers, or unusual noises.

Warning signs:

  1. Outdoor fan not spinning or starts then stalls.
  2. Clicking or buzzing at startup.
  3. Breaker trips after several minutes of run time.

Our technicians identify sensor faults, electrical issues, and refrigerant imbalances with precision. We can often restore cooling the same day, and we stand behind every job with our Lifetime Workmanship Guarantee.

DIY checks before you book a repair

You can safely rule out a few items before scheduling service:

  1. Thermostat mode: Set to “Cool,” fan “Auto,” and verify schedules.
  2. Filter: Replace if dirty. Confirm correct size and orientation.
  3. Outdoor clearance: Keep 18–24 inches around the unit clear.
  4. Power: Confirm breakers are on and disconnect is seated.
  5. Condensate: Look for a tripped float switch from a clogged drain.

If the heat pump is still not cooling, take a short video of the outdoor unit running sound and fan behavior. That helps our techs prepare the right parts.

How WireNut diagnoses and fixes cooling issues

We follow a structured process to solve a heat pump not cooling efficiently and safely:

  1. Initial assessment and written estimate before any tools come out. You will know the price up front.
  2. Full diagnostics: pressures, temps, electrical readings, airflow, and sensor checks.
  3. Repair with factory‑authorized components. Our trucks are stocked for single‑visit fixes when possible.
  4. Final testing in both heating and cooling, airflow verification, and thermostat calibration.
  5. Homeowner orientation so you know exactly how to operate and maintain the system.

We coordinate related services in‑house. If your repair reveals a needed electrical upgrade, duct modification, smart thermostat setup, or indoor air quality improvement, we handle it as a one‑stop shop.

When to repair vs. replace

Consider replacement if your unit is older, has repeat refrigerant leaks, or needs a compressor. Many homeowners upgrade to a high‑efficiency heat pump and take advantage of incentives.

Good reasons to replace:

  1. Frequent repairs and rising energy bills.
  2. R‑22 or obsolete components that are costly to service.
  3. Major parts like compressors or coils are failing.
  4. You want better summer dehumidification and quieter operation.

In our region, a well‑maintained heat pump can last as long as 20 years. If yours is mid‑life and repairable, targeted repairs and a tune‑up may be the smarter path. Either way, we will present options with clear pricing.

Prevent breakdowns with annual tune‑ups

Annual service helps your system keep pace with altitude and weather swings around Pikes Peak. A typical tune‑up includes:

  1. Safety inspection and full operating check.
  2. Cleaning of condenser and evaporator coils.
  3. Condensate drain and line checks.
  4. Lubrication of moving parts and blower calibration.
  5. Filter change and refrigerant level verification.

These regular services extend equipment life, keep warranties valid, and catch small issues before they become midsummer emergencies.

Local climate details that affect cooling in Colorado Springs

At roughly 6,000+ feet, air is thinner, so airflow targets and coil performance differ from sea level. Dust from dry spells can load outdoor coils. Fast‑moving afternoon storms drop temperatures and then sun bakes equipment again, which can create thermal cycling stress. Our designs and repairs account for these realities with proper sizing, duct adjustments, and performance verification specific to our climate.

Costs, timing, and what to expect on the day of service

Most diagnostics take 60–90 minutes. Many repairs are completed the same day. You will get a written quote before we start. If parts are needed, we schedule quickly and keep you informed. After repairs, we verify in both cooling and heating modes and confirm airflow and thermostat operation so you get reliable, even cooling throughout your home.

If the best solution is replacement, we help you claim up to $8,000 in available electrification rebates and up to $2,000 in federal tax credits, and we offer financing to fit your budget.

Special Offer: Heat Pump Savings

Install a new high‑efficiency heat pump and save with available incentives. You could receive up to $8,000 in electrification rebates, plus up to $2,000 in federal tax credits. Schedule your estimate to see what you qualify for and we will guide you through the paperwork.

Call (719) 227-0500 or visit https://thewirenut.com/ to book. Limited time and eligibility apply.

What Homeowners Are Saying

"We had Alex come out to help us with an issue with a mini split unit. He was very professional, answered all of my questions, and did a great job. I'd definitely recommend Wirenut to anyone."
–Shawn E., Heat Pump Service
"These two guys were awesome...took care of what I needed. Cleaned the filter on my mini-split and checked everything on the furnace...as a 81 year old lady...they are just so helpful...Thanks Guys!"
–Pat D., Heat Pump Service
"Jonathan was on time, efficient and professional. He gave me additional information about my mini-split, and what future maintenance would require."
–Vicki K., Heat Pump Service

Frequently Asked Questions

Why is my heat pump running but not cooling?

Incorrect thermostat mode, a clogged filter, dirty coils, low refrigerant, or a failed outdoor fan are common causes. Start with settings and airflow. If that does not fix it, schedule diagnostics to check refrigerant and electrical components.

Should I turn off my heat pump if I see ice on the unit?

Yes. Turn it off to let the ice melt. Replace the filter, clear airflow, and check the drain. If icing returns, call for service to test refrigerant level, sensors, blower speed, and defrost controls.

Can low refrigerant damage my heat pump?

Yes. Low charge can overheat the compressor and cause icing, which reduces lubrication and shortens equipment life. A licensed technician should locate and repair leaks, then charge to manufacturer specs.

Is it normal for a heat pump to struggle in extreme heat?

Heat pumps lose some capacity in high temperatures and at altitude. Clean filters and coils help. If it never reaches setpoint, you may have airflow, refrigerant, or equipment sizing issues.

How often should a heat pump be serviced?

At least once a year. A tune‑up with coil cleaning, drain checks, lubrication, filter change, and refrigerant verification helps maintain efficiency and prevent breakdowns.

Recap

If your heat pump is not cooling, start with thermostat mode and airflow, then look for ice or performance issues that suggest refrigerant or electrical faults. For Colorado Springs homes, altitude and weather make precise tuning essential. We provide same‑day diagnostics, repairs with factory‑authorized parts, and clear pricing.

Call (719) 227-0500 or schedule at https://thewirenut.com/ for expert help today.

Ready to get cool again?

Call WireNut Home Services at (719) 227-0500 or book online at https://thewirenut.com/. If replacement makes more sense, ask about up to $8,000 in rebates and up to $2,000 in tax credits on qualifying heat pumps. Same‑day service, Lifetime Workmanship Guarantee, and a 1‑Year Risk‑Free Product Pledge.

WireNut Home Services is Colorado’s trusted, locally owned HVAC, electrical, and plumbing team. We back our work with a Lifetime Workmanship Guarantee and a 1‑Year Risk‑Free Product Pledge. Our technicians are fully licensed and trained to handle high‑altitude conditions across the Pikes Peak region. We are a multi‑year BBB Excellence in Customer Service award winner, including 2024. Straightforward Pricing, fast scheduling, and one‑stop service for HVAC, electrical, and indoor air quality.

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