Frequently Asked Questions

If the RTU is over 15 years old and needs major component replacement like a compressor or heat exchanger, replacement often costs less long-term than repeated repairs. Newer units deliver better energy efficiency and include updated controls that reduce operating costs. Age combined with expensive repair needs typically makes replacement the smarter investment.

Utah's extreme seasonal range—summer highs above 95°F and winter lows below 10°F—requires systems sized to handle both heating and cooling loads without cycling inefficiently. Undersized equipment runs constantly during temperature extremes, while oversized systems short-cycle and waste energy. Proper load calculations account for elevation, insulation levels, and seasonal demand to match equipment capacity to actual building needs.

VRF systems use refrigerant lines to deliver heating and cooling to multiple indoor units, allowing different zones to run at different temperatures simultaneously. Traditional rooftop systems distribute conditioned air through ductwork at a single temperature. VRF works well for office buildings and mixed-use properties where occupancy and comfort needs vary by room or tenant.

Installation starts with ductwork design and equipment sizing based on building load calculations and construction plans. Rough-in work includes installing duct runs, refrigerant lines, electrical connections, and ventilation components before walls close. Final installation positions indoor and outdoor equipment, completes connections, performs startup testing, and verifies airflow meets design specifications for each zone.

Leaking or poorly insulated ducts lose 20-30% of conditioned air before it reaches living spaces, forcing systems to run longer to maintain temperature. Airflow loss also creates pressure imbalances that strain blower motors and reduce equipment lifespan. Sealing duct joints and adding attic insulation around duct runs reduces energy waste and improves temperature consistency between rooms.

Unusual noises like grinding or squealing, inconsistent temperatures across different building areas, sudden utility cost increases, and frequent system cycling all indicate component failures. Reduced airflow from vents, refrigerant odors, or the system failing to reach setpoint temperatures also signal problems. Addressing these issues quickly prevents complete breakdowns during peak occupancy periods.

Mini splits work for spaces where running ductwork isn't practical—like garages, home additions, or buildings with solid ceilings. They provide independent temperature control without the airflow loss that occurs in long duct runs. Installation requires only a small refrigerant line connection instead of demolition work to route ducts through finished spaces.

Equipment age, type of failure, refrigerant type, and system accessibility all influence pricing. Rooftop units requiring crane access or specialized refrigerant cost more to service than ground-level systems. Component availability and whether the system needs emergency after-hours service also affect total repair expenses.

RTUs need service twice yearly—before cooling season and before heating season—to handle Utah's temperature extremes. Pre-season maintenance catches refrigerant leaks, cleans coils, tests electrical components, and verifies airflow before peak demand. This schedule reduces mid-season breakdowns when businesses can't afford downtime.

Ignition system failures, cracked heat exchangers, restricted airflow from dirty filters, and thermostat malfunctions account for most winter heating breakdowns. Cold startup cycles in below-freezing temperatures stress aging components. Systems over 15 years old face higher failure risk when outdoor temperatures drop below 20°F and furnaces run continuously.

Modern systems run quieter, reach setpoint temperatures faster, and cycle less frequently than outdated equipment. Airflow improves noticeably, temperature stays consistent within 2-3 degrees across rooms, and monthly utility costs typically drop 15-30%. New installations also eliminate hot and cold spots caused by undersized or failing older systems.

Refrigerant leaks, electrical issues, frozen coils, and airflow restrictions worsen with continued operation and cause secondary damage to compressors and motors. Delaying repairs during cooling season risks complete system failure during peak occupancy when replacement parts have longer lead times. Immediate service prevents minor problems from becoming full equipment replacements.