Resources
HVAC Resources
Helpful air conditioning, heating, maintenance, equipment, and service-area reference pages for Phoenix-area homeowners and businesses.
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Practical HVAC resources
Use these pages when you want to understand a symptom, compare repair options, or look up a term before calling for service.
Common AC symptoms
No cooling, warm air, water leaks, frozen coils, breaker trips, short cycling, noises, and thermostat problems each need a different diagnostic path.
Equipment terms
Plain-English definitions for the parts and measurements that come up during AC repair, maintenance, replacement, and HVAC diagnostics.
Service planning
Replacement estimates, rooftop units, commercial HVAC, water heaters, and city service availability all depend on equipment, access, and job scope.
AC Symptom Guides
Find the page that matches what the system is doing
A symptom is only the starting point. These guides explain what may be involved and what should be checked before parts are replaced.
Not cooling
For AC running but not cooling, warm air from vents, hot rooms, or systems that cannot keep up in Phoenix heat.
Will not start
For blank thermostats, outdoor units that will not turn on, compressor no-starts, stopped fans, and startup problems.
Water or ice
For AC leaking water, clogged condensate drains, drain pans, float switches, and frozen evaporator coils.
Electrical symptoms
For breaker trips, burning smells, humming outdoor units, bad capacitors, contactors, motors, and wiring concerns.
Reference Pages
HVAC parts, maintenance, airflow, and replacement topics
These pages help explain the parts of the system and the service decisions that often come up during Phoenix-area HVAC calls.
Definitions
A plain-English glossary for HVAC parts, airflow, refrigerant, electrical components, water leaks, maintenance, and replacement terms.
Components
Capacitors, contactors, compressors, condenser fan motors, control boards, drain pans, ducts, filters, coils, and more.
Maintenance
Filters, coils, drains, capacitors, contactors, refrigerant readings, airflow, and temperature split checks.
Airflow and ducts
Hot rooms, weak airflow, dusty rooms, duct restrictions, return-air problems, register airflow, and FLIR temperature checks.
2018 Mechanical Code References
Mechanical code topics behind real HVAC service calls
Practical references tied to the 2018 International Mechanical Code: permits, access, condensate drains, ductwork, ventilation, combustion air, sizing, and commercial kitchen exhaust.
Permits and inspections
How permits, inspections, local adoption, and job scope can affect Phoenix HVAC replacement, commercial work, and larger alterations.
Equipment access
Why service clearance, attic access, rooftop access, working space, panels, and disconnects matter during HVAC repair and replacement.
Condensate drains
Condensate drain lines, drain pans, float switches, cleanouts, slope, and AC water-leak diagnostics.
Ductwork and airflow
Ducts, plenums, transitions, filters, return air, supply air, support, insulation, and airflow issues behind hot-room complaints.
More Mechanical Code Topics
Ventilation, combustion air, sizing, and commercial exhaust
Useful references when a job involves gas equipment, restaurants, rooftop units, commercial spaces, or replacement planning.
Ventilation and makeup air
Outdoor air, exhaust, makeup air, building pressure, comfort complaints, and why ventilation is different from normal AC airflow.
Combustion air and venting
Gas furnaces, water heaters, venting, combustion air, shared closets, replacement planning, and safety-related warning signs.
Load calculations
Why AC sizing should be based on the home or business load instead of guessing from old equipment tonnage alone.
Kitchen exhaust
Commercial kitchen hood exhaust, makeup air, rooftop equipment, restaurant comfort, pressure balance, and coordination issues.
Service Planning
Repair, replacement, commercial HVAC, and contact pages
If the issue is active, these pages are usually more useful than reading definitions.
Emergency repair
Urgent no-cooling calls, breaker trips, burning smells, frozen coils, water leaks, and outdoor-unit failures.
Replacement
Repair-versus-replacement decisions, estimates, airflow, access, rooftop equipment, warranty, and install planning.
Commercial HVAC
Rooftop units, package units, tenant spaces, offices, restaurants, retail, maintenance, controls, and replacement planning.
Contact CTS
Call with the main symptom, equipment location, whether the system is down, and any water, ice, smell, noise, or breaker-trip details.
Call CTS Air Conditioning
CTS handles AC repair, HVAC service, replacement, maintenance, water heaters, and other plumbing across the Phoenix area.
480-696-5033