Sunset Heating, Cooling, & Electrical has served the Portland area since 1922, providing trusted air conditioning services to generations of Oregon homeowners. Our licensed and insured HVAC technicians deliver dependable air conditioning repair, installation, and maintenance with genuine local care throughout Multnomah and Polk counties.
Our Air Conditioning Repair Services
When the summer heat rises, a reliable cooling system makes all the difference. Our air conditioning repair services cover everything from sudden breakdowns to subtle efficiency issues that drive up your energy bills.
The Most Common AC Problems We Fix
- Burnt or Failing Capacitors: When capacitors wear out, your AC unit may struggle to start or fail mid-cycle. We replace damaged components to restore consistent operation and protect the compressor.
- Refrigerant Leaks: Loss of refrigerant causes poor cooling, ice buildup on coils, and higher electricity use. We locate and seal leaks, recharge your system, and test for lasting performance.
- Electrical Failures and Wiring Damage: Frayed wiring or faulty circuit boards can shut down the entire air conditioning system. Our licensed electricians repair connections safely and verify system grounding for reliability.
- Frozen Evaporator Coils or Drain Line Backups: Low refrigerant or airflow problems can freeze coils and overflow drains. We thaw and clean components, preventing moisture damage inside your HVAC system.
- Clogged Air Filters and Ductwork: Restricted airflow from dirty filters or duct blockages reduces energy efficiency and weakens cooling. Our technicians handle duct cleaning, duct sealing, and filter replacement for smooth circulation.
- Thermostat Issues and Calibration Errors: A miscalibrated thermostat can cause uneven temperatures or short cycling. We check wiring, recalibrate thermostats, and ensure your settings match your comfort needs.
No matter the issue, our AC repair in Portland combines fast diagnostics with honest, upfront pricing so you always know what to expect.
Comprehensive Air Conditioning Installation Services
When repair isn't enough, Sunset provides complete air conditioning installation and replacement services designed around your home's layout, efficiency goals, and comfort needs. If you're worried that your air conditioner may be beyond repair, we offer top-quality AC installation services, ensuring a long-term solution to your cooling needs.
Our Installation Services Include
- Central air conditioning installation and replacement for single-family homes
- System sizing and load calculations to match your home's cooling requirements
- Energy-efficient unit selection to lower monthly utility costs
- Professional ductwork installation and sealing for optimal performance
- Thermostat setup and smart home integration
- Complete system testing and startup verification
Our installation process begins with a thorough assessment of your home's cooling needs, existing infrastructure, and budget. We guide you through unit options and help you understand long-term energy savings and comfort benefits.
Our AC Maintenance Checklist in Portland, OR
Seasonal maintenance keeps your AC system efficient, quiet, and reliable during the warm months. Our air conditioning maintenance visits include a thorough tune-up by trained HVAC technicians.
Our Maintenance Checklist Covers:
- Checking and replacing dirty air filters
- Inspecting refrigerant levels and pressure consistency
- Cleaning condenser and evaporator coils for optimal heat transfer
- Calibrating thermostats and verifying temperature accuracy
- Checking electrical connections and testing capacitor strength
- Lubricating moving parts for reduced friction and noise
- Inspecting ductwork for leaks or damage that affects energy efficiency
Consistent AC tune-ups help prevent costly breakdowns, lower energy bills, and extend your system’s lifespan. We recommend professional AC maintenance in Portland at least once a year, ideally before peak cooling season.



