Heat Pump Maintenance & Tune-Up in Northern Virginia & Maryland

Heat Pump Tune-Up Checklist (Heating + Cooling Modes)

A full heat pump tune-up covers both seasons. Here’s what gets inspected, cleaned and tested:

Heating-mode checks (fall visit):

• Test the defrost system (defrost board and sensor) so the outdoor coil doesn’t freeze over mid-winter
• Test the auxiliary heat strips so backup heat works before the first hard freeze
• Check the reversing valve operation in heat mode
• Inspect and clean the outdoor coil for airflow-killing buildup
• Verify refrigerant charge — low charge cuts heating capacity
• Test thermostat heat settings and backup-heat lockout
• Tighten electrical connections and test capacitors and contactors

Cooling-mode checks (spring visit):

• Clean indoor evaporator coil and condensate drain (clogged drains cause summer water damage)
• Check refrigerant charge in cooling mode
• Test the reversing valve in cool mode
• Clean and straighten outdoor condenser coil fins
• Measure airflow and temperature drop across the coil
• Test thermostat cooling settings and cycle rate
• Inspect blower motor, belts, and wheel for wear

Every visit ends with a written report: what was checked, what’s healthy, and what to watch.

Why Heat Pumps Need Two Visits a Year

A furnace gets one workout per year: winter. An air conditioner gets one: summer. A heat pump gets two — it runs most days of the year, cycling between heating and cooling. That means more wear on the reversing valve, more coil exposure to dirt and debris, and more chances for refrigerant leaks to start.

One visit can’t cover both modes properly. A spring tune-up checks cooling components you’ll need in July; a fall tune-up checks defrost and backup heat you’ll need in January. Skip the fall visit and the first cold snap exposes every weak point — a dirty defrost sensor becomes a frozen coil, an untested aux strip becomes a no-heat night.

That’s why the VIP Maintenance Plan includes two inspections per year. Members get priority service and repair discounts on top of it.

Signs Your Heat Pump Needs Service

You don’t always need a repair call — sometimes these signs just mean your tune-up is overdue. Watch for:

• Rising energy bills with no rate change. Dirty coils and low refrigerant make the system work harder for the same comfort. A tune-up usually reverses this.
• Longer run times or constant aux heat. If “aux” shows on the thermostat during mild weather, the backup strips are doing work the heat pump should handle.
• Uneven heating or cooling. Clogged filters, dirty coils, or low airflow are maintenance issues long before they’re breakdown issues.
• Ice that doesn’t clear. Short defrost cycles with steam are normal; ice that builds up for days is not.
• It’s simply been a year. Heat pumps don’t announce wear. If you can’t remember the last professional check, you’re due.

If something is actually broken — system won’t start, strange grinding, burning smell — head to heat pump repair for same-day service and the $90 visit. Regular maintenance prevents many of those calls.

The AVS VIP Maintenance Plan

The VIP Plan covers everything above: two inspections per year (heating and cooling), priority service and repair discounts, with a written maintenance report after each visit. For a furnace or central AC, see heating tune-up and AC maintenance and tune-up.

Why Homeowners Choose AVS for Heat Pump Maintenance

• Family-owned since 1991: More than 30 years of HVAC service in Northern Virginia and Maryland.
• Seen on ABC7 News: Anil Sareen of AVS Heating and Air Conditioning was interviewed on ABC7 News.
• Licensed in Virginia and Maryland: Virginia HVAC 2705039269A · Maryland HVAC 520714137895 · Maryland Home Improvement 4192876.
• Three local offices: Fairfax, VA · Falls Church, VA · Bethesda, MD.
• 4.8★ on Google: 354 reviews across our three offices.
• All brands serviced: Carrier · Trane · Lennox · Bryant · Goodman · Rheem · York · American Standard · Amana · Mitsubishi.

Commercial Heat Pump Maintenance

AVS also maintains heating and cooling equipment for shops, offices and other commercial buildings across Northern Virginia and Maryland. See commercial HVAC installation, repair and replacement.