Evans, CO Heat Pump Not Blowing Hot Air? HVAC Fixes

Estimated Read Time: 10 minutes

If your heat pump is not blowing hot air, do not panic. In many cases, a quick check fixes the problem and restores comfort fast. This guide shows you simple, safe steps any homeowner can do before calling for service. When a fix needs a pro, we explain the signs and costs to expect. You will also see how rebates and maintenance can prevent a repeat issue.

First, confirm the basics

Before you assume a major failure, rule out the easy stuff that commonly blocks heat.

Thermostat settings
- Set to Heat, not Auto or Cool.
- Increase setpoint 3 to 5 degrees above current room temperature.
- Confirm fan is on Auto for normal heating.
Power and breakers
- Check the indoor air handler switch and panel breaker.
- Inspect the outdoor disconnect near the heat pump.
- If a breaker is tripped, reset once. If it trips again, call a pro.
Airflow path
- Replace or clean the filter if it looks gray or dusty.
- Open all supply registers and return grilles.
- Clear furniture or rugs blocking airflow.

“Polite and knowledgeable professional that designed and installed an air heat pump in my house.”

Understand how heat pumps deliver warm air

Heat pumps move heat, they do not create it with a flame. Air may feel milder than a furnace but should still rise above room temperature. Expect supply air in the high 80s to mid 90s during mild weather. On very cold mornings, the system may run longer to meet the setpoint. In Northern Colorado, cold climate models paired with proper controls keep homes comfortable even during upslope storms.

Two helpful facts for our region:

Heat pumps require twice‑yearly maintenance because they heat and cool the home. Skipping tune‑ups causes efficiency drop and poor heat.
Colorado offers a heat pump income tax credit equal to 10 percent of equipment price, excluding installation. This offsets the cost of higher performance units that heat better in cold weather.

Defrost mode vs real problems

On frosty days, outdoor coils can ice over. The system will enter defrost and may blow slightly cool or neutral air for several minutes.

What is normal:

You may see steam and hear a whoosh while the outdoor unit defrosts.
Indoor air can feel cooler for 5 to 15 minutes.

What is not normal:

Continuous ice buildup on the outdoor coil.
Defrosting every few minutes.
Loud grinding or metal on metal sounds.

If ice persists after defrost, shut the system off and call. Persistent ice can damage the compressor.

“Shawn worked on our zoned heat pump system which was not keeping the upstairs cool. Fixed it perfectly and made the other zones work better as well.”

Filter, coil, and airflow issues

A clogged filter or dirty indoor coil starves the system of air. That reduces supply temperature and makes the unit feel like it is not heating.

Steps you can take now:

Replace the filter. Use the correct size. Mark the arrow toward the blower.
Inspect returns for dust mats and pet hair. Vacuum grilles.
If you see dirt on the indoor coil, stop and schedule a professional cleaning.

Signs of a deeper airflow problem:

Some rooms are warm while others are cold.
The outdoor unit runs but indoor airflow is weak.
Ductless heads show error lights or reduced fan speed.

In older homes around Fort Collins and Loveland, undersized returns are common. Our in‑house sheet metal shop can add a return drop or enlarge a grille to restore proper airflow. Better airflow often raises supply temperature by several degrees.

“We have been using Fort Collins Heating and Air for over 15 years... worked all day in 100 degree heat to install our new heat pump/AC unit... the most satisfying service experience we can remember.”

Thermostat and control problems

Modern heat pumps depend on smart controls and sensors.

DIY checks:

Replace thermostat batteries if the screen is dim or blank.
Confirm the system type is set to Heat Pump in the thermostat setup.
For ductless systems, set the mode to Heat and select a medium fan speed.

When to call:

Frequent short cycling or random shutdowns.
Outdoor unit runs while indoor blower stays off.
Emergency heat or backup heat will not engage when it is very cold.

We see misconfigured thermostats after equipment upgrades. A quick pro setup often restores proper staging and defrost timing so you get warmer air.

“Lucas was especially helpful in explaining the system and safety features to us, as well as helping us set up the new smart thermostat.”

Refrigerant charge and reversing valve faults

If airflow and controls check out, the next suspects are refrigerant and the reversing valve.

Low refrigerant charge

Causes: slow leak at flare fittings, service ports, or coil.
Symptoms: lukewarm air, longer run times, frost on the outdoor coil in mild weather, or error codes on ductless heads.
Solution: a licensed tech must pressure test, repair leaks, evacuate, and weigh in the factory charge. Topping off without fixing leaks is a temporary bandage that reduces efficiency and can harm the compressor.

Reversing valve failure

This valve directs refrigerant flow between heating and cooling.
Symptoms: unit cools fine but will not heat, or it gets stuck in between and blows neutral air.
Repair: electrical testing of the solenoid, then refrigerant circuit diagnosis. Valve replacement is a pro job.

Our technicians complete continuous training to diagnose these complex problems. Proper testing protects your warranty and ensures the manufacturer honors any claim.

Outdoor unit blocked or iced over

Northern Colorado winds can drift leaves and snow against the outdoor cabinet.

What to do safely:

Turn off power at the disconnect.
Clear 2 to 3 feet of space around the unit. Brush off leaves and snow.
Gently remove light ice with warm water, not sharp tools.
Restore power and run the system. If ice returns quickly, schedule service.

If your home is in Windsor or Wellington, windblown cottonwood can blanket coils. A seasonal coil wash and a simple wind baffle can prevent repeat icing.

“They arrived right on time, and worked super hard to install our heat pump, furnace and water heater. They were very friendly and respectful.”

Backup heat and cold climate performance

Many heat pumps have backup heat. It may be electric strip heat or a dual fuel furnace.

What you can check:

Toggle Emergency Heat on your thermostat during a cold snap. If the air gets hot, your backup heat works.
If Emergency Heat does nothing, the backup heater may be off at the breaker or failed.

Cold climate heat pumps

These models maintain strong output in subfreezing weather. They use variable speed compressors and optimized refrigerant.
If your older unit struggles below 20°F, upgrading to a cold climate model can cut your heat bills and improve comfort.

Our team installs ductless mini‑splits and cold climate systems that are right‑sized for your home. We replace single components, such as a failed air handler, when a full system swap is not needed.

Strange noises and smells

Sounds and odors help pinpoint the issue.

Noises to note:

Grinding or scraping can indicate a failing blower motor or fan blade rub.
Hissing can signal a refrigerant leak.
Loud buzzing may be a failing contactor or capacitor.

Smells:

Electrical or burnt dust at first heat is common. It should fade in minutes.
Persistent burning or fishy odors require an immediate shutoff and inspection.

“Blake came by on a Saturday as we had noticed a peculiar smell... He evaluated the unit and made sure there was no issues and provided tips on operating the unit most efficiently.”

Quick decision guide: fix now or call a pro

DIY friendly

Thermostat mode and setpoint checks.
Filter change and register opening.
Breaker reset once.
Light outdoor coil cleaning.

Call a professional

Repeated breaker trips.
Ice that returns after defrost.
Weak airflow after a new filter.
Error codes on ductless heads.
Suspected refrigerant or reversing valve faults.

Fort Collins Heating & Air Conditioning and Plumbing offers 24/7 emergency service. We can often diagnose the issue the same day in Fort Collins, Loveland, Greeley, Windsor, and nearby cities.

Prevent the problem from coming back

Consistent maintenance keeps your heat pump blowing warm air all winter.

Biannual maintenance checklist

Fall heating tune‑up: coil cleaning, electrical testing, defrost and refrigerant checks, airflow measurements, and thermostat calibration.
Spring cooling tune‑up: repeat tests, drain cleaning, and performance verification.

Benefits you can feel

Faster warm‑up and steady temperatures.
Lower energy bills from higher system efficiency.
Fewer repairs and longer equipment life.

Our technicians provide maintenance that improves efficiency and keeps repair needs to a minimum. Many customers join our plan for priority scheduling and savings.

Rebates, incentives, and tax credits that reduce your cost

Upgrading a struggling system is often smarter than paying for repeated repairs. Here are real savings available now in Northern Colorado.

Save up to $14,000 in combined rebates, incentives, and tax credits on qualifying heating systems, including heat pumps and boilers. Program rules apply.
Cold climate heat pump installations may qualify for rebates totaling over $8,800. Many projects also include a 3‑year labor warranty and first‑year maintenance.
Colorado heat pump income tax credit equals 10 percent of the equipment price, excluding installation. We help you document eligibility.
Heat pump water heaters can qualify for a $2,250 rebate when installed by a qualified contractor. Current offer expires 7/31/25.

We will verify programs for your address, handle paperwork, and present the net price after incentives before work begins.

What to expect from a professional visit

When you schedule service with us, here is the process.

Arrival and safety
- Your technician calls ahead, arrives in uniform, and protects floors and work areas.
Diagnosis
- We measure static pressure, coil temperatures, and electrical components. We verify system charge and test the reversing valve.
Options
- You receive a clear repair or replace choice. We show parts pricing, labor, and any warranty status.
Fix and verify
- We complete repairs to manufacturer specs and verify warm supply air at multiple registers.
Education
- We set thermostat schedules and show you how to change filters. We review maintenance dates and available rebates if an upgrade is smart.

“FCHA handled all the paperwork for the heat pump rebates, a big plus for us. This is a quality operation, we recommend them enthusiastically.”

Special Offers for Northern Colorado Homeowners

Save up to $14,000 in rebates, incentives, and tax credits on a qualifying heat pump system. Limited time. Call (970) 235-2177.
Cold climate heat pump installation offer: rebates totaling over $8,800, plus a 3‑year labor warranty and first‑year maintenance. Call now for eligibility.
Heat pump water heater rebate: claim $2,250 when installed by a qualified contractor. Offer expires 7/31/25.

Book today at fortcollinsheating.com and ask for current heat pump rebates before they change.

Frequently Asked Questions

Why does my heat pump blow cool air sometimes in winter?

Heat pumps deliver milder air than gas furnaces. During defrost, air can feel cool for 5 to 15 minutes. If it never warms up or defrosts often, call for service.

How often should a heat pump be serviced?

Twice a year. One visit in fall for heating and one in spring for cooling. Regular maintenance keeps efficiency high and reduces repairs.

Will a cold climate heat pump work in Fort Collins?

Yes. Cold climate models maintain strong output in subfreezing weather. Proper sizing, controls, and airflow are key to reliable heat on the Front Range.

Can low refrigerant cause no heat?

Yes. A leak reduces capacity and supply temperature. A licensed tech must find and fix the leak, evacuate, and charge to factory specs.

What should I check before calling for repair?

Confirm Heat mode, raise the setpoint, replace the filter, open registers, and check breakers once. If problems persist, schedule professional service.

Key Takeaways

A heat pump not blowing hot air usually comes down to settings, airflow, defrost, or refrigerant issues. Start with simple checks, then call a certified pro if the problem remains. With biannual maintenance and the right equipment, you can expect steady winter comfort and lower bills.

Ready for Fast, Local Help?

For expert help with a heat pump not blowing hot air in Fort Collins and nearby cities, call our 24/7 team or schedule online today.

Call Fort Collins Heating & Air Conditioning and Plumbing at (970) 235-2177 or schedule at fortcollinsheating.com. Mention current heat pump rebates to see if you qualify for up to $14,000 in savings. We serve Fort Collins, Loveland, Greeley, Windsor, and more.

About Fort Collins Heating & Air Conditioning and Plumbing

Proudly serving Northern Colorado since 1934, we are family owned for 4 generations. Our NATE‑certified team installs and services heat pumps, ductless mini‑splits, and cold climate systems. We back our work with a 100% satisfaction guarantee and a 1‑year test drive on system installations. As a Bryant Factory Authorized Dealer and Medal of Excellence winner, we combine technical depth with small‑company care. We also help you qualify for rebates and the Colorado heat pump tax credit.