Homeowners' pick for heating and cooling across Virginia and the Mid-Atlantic
Heat Pump Repair in Sterling, VA — Book a Visit Today
Heat pumps that run constantly without warming the house are the call we get most from late November through March. We do heat pump repair for Sterling homes, including units that ice up during the damp shoulder weeks when temperatures hover near freezing and the defrost cycle cannot keep up. Confirm the thermostat is set for heat, check for a tripped breaker, and clear snow, leaves or shrub growth from around the outdoor coil. Past that, the reversing valve, defrost board and charge are ours to check. Call us with what you are seeing, or send the quote form.
Call (888) 365-6280- A real person answers
- Open 7 days
- Written quote before work starts
Taking calls until 5:00 PM ET
Common heat pump faults in Sterling homes
- Air out of the vents feels cool even though the heat is on Reversing valve stuck in cooling, low refrigerant charge, or a thermostat wired backwards
- The outdoor unit is a block of ice and stays that way Defrost control board, defrost sensor or thermostat failure, plus restricted airflow
- It heats, but the electric strips run constantly and the house never catches up Compressor or refrigerant problems forcing auxiliary heat to carry the load
- The furnace side never kicks in on the coldest nights Dual-fuel changeover control, outdoor sensor or thermostat staging fault
- Loud bang or grinding from the outdoor unit when it changes modes Failing reversing valve, fan motor bearings or a loose blade and mount
People call this heat pump repair or heat pump service. Same visit, same written quote, same technician.
Sterling coverage
From Sterling we also cover Herndon, Ashburn, Reston, Chantilly, Leesburg, Great Falls and Dulles.
Other repairs we do in Sterling
- AC Repair
- Furnace Repair
- AC Installation
- Furnace Installation
- Ductwork Repair
- HVAC Maintenance
- Duct Cleaning
- Thermostat Installation
- Mini-Split Repair
- Indoor Air Quality
Heat Pump Repair in cities near Sterling
- Heat Pump Repair — Herndon, VA
- heat pump repair for Ashburn homes
- Reston heat pump repair
- heat pump repair for Chantilly homes
- heat pump repair for Leesburg homes
heat pump repair across the region → · Every system we fix in Sterling →
How we compare to other HVAC companies in Sterling
| James River Heating & Air | Big-box repair chains | Handyman listings | |
|---|---|---|---|
| Written quote before any work | ✓ | ✕ | ✕ |
| Live answer seven days a week | ✓ | ✕ | ✓ |
| Every major brand, gas or electric | ✓ | ✓ | ✕ |
| Independent company, nobody's quota | ✓ | ✕ | ✓ |
| Local techs who know the housing stock | ✓ | ✕ | ✓ |
What you get on every job
The quote comes first, in writing
Covering 171 cities across Washington DC, Delaware, Maryland and 5 more.A real person answers
Open 7 days, 8:00 AM to 5:00 PM ET.Every major brand, gas and electric
Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.Heat Pump Repair in Sterling — quick answers
Why is my heat pump blowing cool air in the winter?
Usually a reversing valve that has not shifted into heating, a low refrigerant charge, or a thermostat set or wired wrong. Heat pump air also feels cooler than furnace air by nature. We measure temperatures at the coil to tell the difference.
Is frost on the outdoor unit normal?
A light coat of frost in damp weather is normal, and the unit should melt it off in a defrost cycle every so often. Solid ice covering the coil and fan for hours is not normal and points to a defrost control or airflow problem.
What does a defrost cycle problem look like?
You may hear a whoosh and see steam from the outdoor unit as it clears ice, which is correct. Trouble looks like ice that never clears, defrost running constantly, or the unit shutting down on a cold morning.
How does dual-fuel repair differ from a straight heat pump?
A dual-fuel system has to hand off between the heat pump and a gas furnace at a set outdoor temperature. Repairs often involve the changeover control, the outdoor sensor, or thermostat staging rather than the heat pump itself.
How soon can you get to my house in Sterling?
Call us and we will give you a real window rather than a vague promise. Most Sterling calls get scheduled same week, and on hot stretches in July and August we work through no-cooling calls first. Before we arrive you can check the thermostat batteries and settings, look for a tripped breaker, swap a dirty filter, clear leaves and grass clippings away from the outdoor unit, and confirm your vents are open. Anything involving gas, refrigerant or high voltage waits for us.
How it works
- Step 1
Tell us the symptom
Call or fill in the form and describe what changed. Warm air, short cycling, a smell, water near the indoor unit. Details like that help us load the right parts before we leave.
- Step 2
We diagnose the whole system
We check the thermostat, the indoor unit, the outdoor unit and the ductwork, including runs in crawlspaces where damp air and loose joints quietly cause weak airflow and long run times.
- Step 3
You approve the fix
We explain what failed, what it takes to repair it, and what we would watch next season. Nothing gets replaced without your yes, and we clean up before we leave.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- Humidity is our home groundMuggy summers and damp shoulder seasons drive most of the calls we take. We look at moisture and airflow together, not the cooling number alone, because a clammy house often means a sizing or duct problem.
- Crawlspace ducts get checkedOlder homes across the region run supply ducts through vented crawlspaces. Crushed flex, disconnected boots and soaked insulation show up constantly, and we get under the house to look instead of guessing from the register.
- Heating and cooling bothSame crew for air conditioning repair in July and heating repair in January. We know how your furnace, heat pump and air handler share ducts and a blower, so one visit covers the whole system.
- Plain talk on repair or replaceWhen a repair makes sense, we repair it. When a system is failing in ways that will keep costing you, we say so and explain why, then leave the decision with you and your timeline.
- All major brands, gas & electricCarrier, Trane, Lennox, Goodman, Rheem, York and more, as an independent company.
- Straight answersIf a system is not worth repairing, we say so, often right on the phone.
Heat Pump Repair in Sterling
The longer it sits broken, the more it takes from you
Fault described, quote approved, repair done. The first step takes a minute.
- A real person answers
- Open 7 days
- Written quotes
- All major brands
- Gas & electric
Rather not call? Get a free quote →