Heat Pump Maintenance & Seasonal Tune-Ups in Gering, NE

When we arrive, we observe your heat pump in its current operating mode and interview you about how the system has performed since the last visit. If it’s a spring visit, we’ll verify summer cooling readiness; if it’s fall, we’re assessing heating-season preparation. We note any sounds, performance changes, comfort gaps, or concerns you’ve noticed.

• Ask about system performance since last maintenance: any unusual noises, comfort gaps, or inconsistencies?
• Check outdoor temperature and recent weather (has it been running much?)
• Listen to outdoor unit: compressor hum should be smooth, outdoor fan should run quietly
• Feel refrigerant lines — they should be cold in cooling mode, hot in heating
• Test thermostat: set to opposite mode and verify system responds, reverses properly
• Note any frost or ice buildup on outdoor coil (normal in cooling mode, excessive in heating mode indicates a problem)
• Inspect outdoor unit’s electrical disconnect, drip pan, and physical security

Heat pump refrigerant charge is performance-critical and seasonal. We measure high-side and low-side pressures while the system operates in cooling mode, calculate superheat (vapor line) and subcooling (liquid line), then switch to heating mode and measure again. This dual-mode testing reveals slow leaks, charge loss, and component failures.

• Set thermostat to cooling; allow system to stabilize 10 minutes
• Measure high-side and low-side refrigerant pressures with calibrated gauges
• Calculate superheat using vapor-line temperature and pressure tables
• Calculate subcooling using liquid-line temperature and pressure tables
• Compare results to manufacturer specs; document any deviation
• Switch thermostat to heating; allow reversing valve to click and system to stabilize
• Measure heating-mode pressures and calculate superheat for heating operation
• Compare heating-mode charge to manufacturer heating-mode specifications
• If pressures are low, perform electronic leak detection and trace leak source
• Verify no significant charge loss since last visit; if loss is detected, find and repair source

The reversing valve is heat pump-specific — it’s the electrical switch that moves heat pump operation between heating and cooling. A failing reversing valve prevents switching or causes partial switching, leaving you without heating or cooling. We verify the valve clicks smoothly and pressure readings change appropriately after the click.

• Set thermostat from cooling to heating; listen for audible reversing valve click
• Record high-side and low-side pressures before the click
• Record pressures after the click — they should change significantly (pressures reverse)
• Repeat from heating back to cooling; verify smooth transition
• Measure solenoid coil voltage: should be 24V AC when thermostat calls for mode shift
• Test solenoid continuity with multimeter; coil should show 30–80 ohms resistance
• If no click or pressures don’t change, note findings and recommend service call

Dirty coils force your heat pump to work 20–30% harder, wasting energy and accelerating wear. We clean both the indoor evaporator (where cooling happens) and outdoor condenser (where heat exchange occurs during both heating and cooling).

• Inspect outdoor condenser coil for leaf debris, dirt, ice, or pollen accumulation
• Clean outdoor coil using soft brush and compressed air; remove all debris and blockages
• If buildup is heavy, apply approved coil cleaner and rinse with water
• Inspect indoor air handler location for ductwork leaks, dirt on indoor coil, or blockages
• Clean or replace air filter if clogged; verify filter frame fits correctly
• Examine indoor coil for ice buildup (indicates airflow loss or low charge — we’ll address in diagnostics)
• Check condensate drain line for blockage; pour water down line to verify flow
• Document coil condition before and after cleaning

Heat pumps use a defrost cycle to prevent ice buildup on the outdoor coil during heating. A failed defrost cycle causes the coil to ice over, reducing heating capacity. We verify defrost settings and operation, especially critical before heating season begins.

• During fall maintenance (heating season): observe outdoor unit for minor frost or ice
• If heating mode is available, set thermostat to heat and allow system to run
• Monitor for defrost cycle activation: compressor remains on, reversing valve clicks, outdoor fan stops
• Time how long before defrost activates (typical: every 30–90 minutes of heating)
• Verify how long defrost runs (typical: 5–15 minutes, then outdoor unit resumes normal operation)
• After defrost cycle ends, confirm ice is clearing from the outdoor coil
• Verify outdoor-unit fan resumes operation after defrost — this indicates normal airflow restoration
• Test defrost thermostat sensor: should measure 35–55°F (outdoor coil temperature)

Heat pumps have multiple electrical controls protecting the system and ensuring safe operation. We test each critical circuit and safety device.

• Measure voltage at outdoor disconnect: should be 240V AC (or 208V depending on installation)
• Test outdoor contactor coil voltage: should measure 24V AC when thermostat calls for operation
• Measure contactor coil continuity: should show low resistance (typically <5 ohms)
• Verify compressor motor is receiving power during operation: measure voltage at compressor terminal
• Test low-pressure safety switch: should be closed during normal operation, open if pressure is critically low
• Test high-pressure relief: should be closed during normal operation, open if pressure is excessive
• Check circuit breaker at main panel: should be in ON position; note any history of nuisance trips
• Verify run capacitor voltage (if present): should be within 10% of rated voltage
• Test sequencing relay (if present): should energize outdoor and indoor blowers in correct sequence
• Test thermostat 24V power: should measure 24V AC between transformer secondary terminals

Poor airflow from restricted ducts, blocked filters, or blower issues reduces both heating and cooling capacity. We verify ductwork is sealed and airflow is adequate for your system.

• Inspect return-air filter: if clogged, replace with new filter of correct size and MERV rating
• Check blower motor voltage: should match nameplate (typically 120V or 240V)
• Listen to blower: should run quietly without grinding or rattling
• Inspect ductwork where visible: check for holes, loose connections, or crushed sections
• Perform visual inspection for signs of leakage: dust accumulation around seams indicates leaks
• Verify return-air pathways are clear: no furniture, walls, or blockages restricting air intake
• Check thermostat fan setting: if set to ON, blower runs continuously (raising utility costs); recommend Auto
• Verify dampers are positioned correctly: all supply vents open during heating and cooling
• Note any ductwork improvements needed; discuss with homeowner