Frequently Asked Questions

Load calculation determines the correct unit size based on square footage, insulation, and window orientation. Without it, contractors often install oversized systems that cycle inefficiently or undersized units that can't cool Portland-area homes during summer heat. Proper sizing prevents the costly mistakes that plague rushed commodity installs.

Static pressure testing measures airflow resistance in ductwork after installation to verify the system delivers rated performance. High static pressure from undersized ducts or poor sealing reduces efficiency and shortens equipment life. This test catches duct issues before they cause comfort problems or early system failure.

Ductless mini-split systems mount indoor units in each room connected to an outdoor compressor via refrigerant lines. They avoid the expense of adding ductwork to older homes and provide room-by-room temperature control. Each zone operates independently, so you're not cooling unused spaces.

Repair makes sense when the heat exchanger is intact and the failure involves replaceable components like igniters, blower motors, or gas valves. If the heat exchanger is cracked or the unit is over 18 years old with compounding failures, replacement avoids repeated repair costs. Emergency mid-winter replacements cost more than planned early-season installs.

Ignition system faults, blower motor wear, and thermostat failures account for most heating breakdowns. Dirty filters restrict airflow and overheat heat exchangers, while aging gas valves stick closed. Pressure testing and flame analysis identify which component failed so you're not replacing the entire system unnecessarily.

Same-day repair requires common parts immediately available—igniters, capacitors, contactors, thermostats, and blower motors. Without stocked inventory, repairs delay for ordering, extending comfort loss and sometimes requiring multiple truck rolls. Parts availability separates emergency-capable contractors from appointment-only services.

Twice yearly—before cooling season and before heating season—catches wear before peak demand. Spring maintenance prepares AC for summer use, and fall service ensures furnaces operate reliably through winter. Seasonal demand spikes make mid-season breakdowns expensive and harder to schedule.

AFUE measures how much fuel converts to heat versus venting outdoors. A 95% AFUE furnace delivers 95 cents of heat per dollar of gas, while 80% AFUE units waste more through the flue. Higher AFUE costs more upfront but reduces heating bills across Portland's wet, cool winters.

Existing ductwork often supports cooling addition if ducts are properly sized and sealed. Static pressure testing verifies whether ducts handle increased airflow from AC operation. Undersized or leaky ducts reduce cooling performance and efficiency, sometimes requiring duct modifications before AC installation.

Technician diagnoses the failure—no heat, no cooling, or system safety shutoff—and determines whether same-visit repair is possible with stocked parts. Heating and cooling failures don't wait for business hours, so emergency availability prevents extended comfort loss. Owner-operator response ensures diagnostic quality during off-hours.

Leaky ducts lose 20-40% of conditioned air into attics, crawlspaces, and wall cavities before reaching living areas. Sealing ducts during installation ensures the system delivers rated capacity and efficiency. Unsealed ductwork forces systems to run longer, raising energy costs and shortening equipment life.

Low refrigerant usually indicates a leak, not normal depletion—systems don't consume refrigerant during operation. If the unit runs constantly without cooling or ice forms on lines, refrigerant loss is likely. Load calculation and pressure testing identify whether the compressor, expansion valve, or coil is leaking before adding refrigerant.