Heating & AC Services:
- Complete HVAC diagnostics for heating, cooling, and airflow issues
- Cabin air filter inspection and replacement for clean interior air
- Refrigerant testing and recharge (R134a & 1234yf)
- Heater core, blower motor, and thermostat inspection and repair
- HVAC system cleaning and deodorizing
- Heater hose inspection and replacement
- A/C compressor testing, repair, and replacement
- Evaporator and condenser service to restore cooling efficiency
- Climate control electrical diagnostics, including blend door actuators and fan modules
Professional Heating & Air Conditioning Repair
Your vehicle’s HVAC system does far more than keep the cabin comfortable — it’s essential for safe driving, effective defrosting, engine cooling support, and electrical system performance. At By The Book Diesel & Auto Repair, we provide complete heating and air conditioning service for all makes and models, including light-duty diesel trucks that rely on complex climate control and cooling systems.
Modern HVAC systems use electronic controls, refrigerant sensors, pressure switches, blend doors, and multiple modules that all need to work in sync. When one component fails, temperature control issues, weak airflow, or system malfunctions quickly follow. Our technicians use advanced diagnostic tools to pinpoint the cause and restore proper operation.
Common A/C Issues We Diagnose and Repair
- Low refrigerant or refrigerant leaks
- Weak airflow or intermittent cooling
- Faulty compressors, condensers, or evaporators
- Electrical issues affecting fan motors or control modules
- Sticking blend doors causing incorrect temperature
- Bad pressure switches or clogged expansion valves
A/C issues only worsen over time, so early diagnosis prevents compressor damage and expensive repairs.
Common Heating Issues We Repair
While heating systems are generally reliable, problems can be serious when they do occur. We diagnose and repair:
- Heater core restrictions or leaks
- Thermostat malfunctions
- Coolant leaks from hoses, fittings, or the water pump
- Blower motor failures
- Loss of defrost function (a major safety concern)
A clogged or failing heater core can also lead to engine overheating, so prompt inspection is important.
Our HVAC Service Process
When you bring your vehicle in for heating or A/C concerns, our service may include:
- System pressure checks
- Refrigerant leak testing
- Cooling fan and condenser inspection
- Cabin filter cleaning or replacement
- Compressor, evaporator, and condenser testing
- Repair or replacement of hoses, gaskets, and seals
- Heater core testing and coolant system inspection
- Blend door actuator diagnosis
- Thermostat and water pump assessment
We repair both the HVAC system and the engine cooling components connected to it, ensuring long-term reliability.
Preventing HVAC Problems
Routine service helps prevent costly repairs. We recommend periodic checks based on:
- Driving habits
- Operating conditions (heat, dust, towing, idling)
- Coolant type and change interval
- Vehicle age and mileage
Symptoms that require immediate inspection include:
- Overheating
- Sweet or chemical smells
- Moisture or coolant leaks inside or outside the vehicle
- Weak heat or A/C
- Fogging windows that won’t clear
Stay Comfortable & Safe Year-Round
Whether you need A/C recharge, heater core service, an HVAC electrical repair, or a full system diagnostic, the team at By The Book Diesel & Auto Repair is here to help. We restore temperature control, improve air quality, and ensure your HVAC system works reliably in every season.
