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FAQs

San Diego Homeowners' Complete Plumbing & HVAC FAQ

Here at Anderson Plumbing, Heating & Air, our team is committed to making your life easier any way we can. We've gotten together to answer some of the most asked plumbing and HVAC questions to help you better understand plumbing, heating, air conditioning, and ventilation. As always, if you have any other questions, please reach out to our expert technicians. We are happy to provide guidance and advice.

Heating & Air Conditioning

Low refrigerant, a dirty air filter, thermostat settings, or electrical problems can all prevent an air conditioner from cooling properly. A professional inspection identifies the cause before repairs begin.
Restricted airflow, low refrigerant levels, or a dirty evaporator coil are the most common causes. Turn the system off and allow it to thaw before scheduling service.
Dust collects on the heat exchanger and other internal components while the furnace sits unused. The odor normally disappears after the system runs for a short period.
Most standard filters should be checked monthly and replaced every one to three months. Homes with pets, allergies, or higher system usage frequently require more frequent replacement.
The Auto setting runs the fan only during heating or cooling cycles. The On setting keeps the fan running continuously to circulate air throughout the home.

Plumbing

A worn flapper, leaking fill valve, or improper water level inside the tank frequently allows water to escape, causing the toilet to refill periodically.
A traditional tank water heater generally lasts 8 to 12 years, while a tankless water heater can last 20 years or longer with regular maintenance.
The main shut-off valve is commonly located near the front of the property, where the water service enters the home, or inside a utility area such as the garage. The exact location varies by property.

The sink may be located farther from the water heater or have a lower flow rate than the shower. Faucet issues or plumbing layout can also increase the wait for hot water. 

A pressure-reducing valve lowers incoming water pressure to a level suitable for residential plumbing. In areas where municipal water pressure changes throughout the day, a PRV helps protect plumbing fixtures and appliances. 

Sewer and Drains

No. Coffee grounds settle inside drain pipes, while eggshells can contribute to buildup. Both increase the likelihood of future drain clogs.
Gurgling fixtures frequently indicate a partial drain blockage or a plumbing vent problem. A professional inspection determines which condition is affecting the system.
A main sewer cleanout provides direct access to the home's sewer line for inspections and drain cleaning. It is commonly located outside near the home's foundation or along the main sewer line.
No. Even products labeled as flushable do not break down like toilet paper and can contribute to clogs in household plumbing and municipal sewer systems.

Choosing a New HVAC System

A SEER2 rating measures the cooling performance of a central air conditioning system under updated testing standards. As of 2026, higher SEER2 ratings generally indicate lower energy use under comparable operating conditions.
HSPF2 measures the heating performance of a heat pump during the heating season using updated testing procedures. Higher ratings indicate lower energy consumption for the same amount of heating.
Single-stage compressors operate at full capacity whenever they run. Two-stage compressors offer a lower operating stage for milder conditions, while variable-speed compressors continuously adjust output to match cooling demand.
A dual-fuel system combines an electric heat pump with a gas furnace. The system automatically uses the heat source best suited for outdoor conditions.
Pricing depends on system size, equipment type, installation requirements, and the home's heating and cooling needs. An in-home evaluation provides the most accurate estimate.

Appointments & What to Expect

Service availability and dispatch policies vary by provider. Confirm scheduling details and any applicable fees when booking the appointment.
Most residential HVAC replacements are completed in one day, although larger or more complex installations can take longer.
Someone 18 years of age or older is generally expected to be present at the beginning of the appointment to provide access and discuss the work being performed.
Permit requirements vary by city and the scope of the project. Most sewer line replacements require permits and inspections to verify the work meets local building codes.
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