Frequently Asked Questions

A: Most standard 1-inch air filters should be changed every 30-90 days depending on usage, pets, and indoor air quality. Homes with pets or allergy sufferers should change filters every 30 days. Homes without pets and with good air quality can go up to 90 days. Thicker media filters (4-5 inch) can last 6-12 months. Check your filter monthly and replace it when it appears gray or dirty.

A: We recommend having your air conditioning system serviced once per year, ideally in the spring before the cooling season begins. Your heating system should be serviced once per year in the fall before the heating season. If you have a heat pump that provides both heating and cooling, twice-yearly service is recommended. Regular maintenance extends equipment life, improves efficiency, and helps prevent unexpected breakdowns.

A: Several issues can cause an AC to blow warm air: low refrigerant (indicating a leak), a dirty air filter restricting airflow, a frozen evaporator coil, a failed compressor, a tripped circuit breaker, or incorrect thermostat settings. Check your thermostat first to ensure it is set to "cool" and the temperature is set below the current room temperature. Check your air filter and circuit breaker. If those are not the issue, call a technician for diagnosis.

A: SEER stands for Seasonal Energy Efficiency Ratio. It measures how efficiently an air conditioner converts electricity into cooling over an entire cooling season. A higher SEER rating means greater efficiency and lower operating costs. As of 2023, the minimum SEER2 rating for new AC systems in the South and Southwest is 15. High-efficiency systems range from 18-26 SEER. While higher-SEER systems cost more upfront, they can save hundreds of dollars per year in energy costs.

A: With proper maintenance, a central air conditioning system typically lasts 15-20 years. Gas furnaces generally last 15-25 years. Heat pumps typically last 10-15 years. These are averages — some systems last longer with excellent maintenance, while others fail earlier due to neglect, improper installation, or poor-quality equipment. If your system is approaching or past these ages and requires significant repairs, replacement may be more cost-effective.

A: HVAC system size is determined by a Manual J load calculation that considers your home's square footage, insulation levels, window area and orientation, local climate, ceiling height, and other factors. An oversized system will short-cycle (turn on and off frequently), causing humidity problems and premature wear. An undersized system will run constantly and struggle to maintain comfort. Never size a system based solely on square footage — always insist on a proper load calculation.

A: High energy bills can result from several HVAC-related issues: a dirty air filter restricting airflow, low refrigerant reducing efficiency, dirty coils reducing heat transfer, duct leaks losing conditioned air, an aging system losing efficiency, a failing compressor working harder than normal, or a thermostat that is not calibrated correctly. A professional tune-up can often identify and correct the issues causing high energy bills.

A: A heat pump is an HVAC system that provides both heating and cooling by moving heat rather than generating it. In summer, it moves heat from inside your home to outside. In winter, it extracts heat from outdoor air and moves it inside. Heat pumps are very efficient in mild climates and are well-suited to Texas, where extreme cold is infrequent. For the occasional very cold weather, a dual fuel system (heat pump + gas furnace backup) provides the best combination of efficiency and reliability.

A: A dual fuel system combines an electric heat pump with a gas furnace. The system automatically uses the heat pump for heating when outdoor temperatures are above a set point (typically 35-40°F), and switches to the gas furnace when temperatures drop below that point. This provides maximum efficiency in mild weather and reliable heating in extreme cold. Dual fuel systems are popular in Texas and other Southern states where winters are generally mild but can occasionally be severe.

A: Different noises indicate different problems. A banging or clanking noise often indicates a loose or broken component inside the compressor or air handler. A squealing noise may indicate a worn blower belt or failing motor bearings. A clicking noise at startup and shutdown is normal, but continuous clicking may indicate a failing relay or control board. A hissing noise may indicate a refrigerant leak. A rattling noise often indicates loose panels or debris in the system. Any unusual noise warrants a professional inspection.

A: Refrigerant is the chemical compound that circulates through your air conditioning system and transfers heat. It absorbs heat from indoor air at the evaporator coil and releases it outdoors at the condenser coil. A properly functioning AC system does not consume refrigerant — it circulates in a closed loop. If your system is low on refrigerant, it means there is a leak that must be found and repaired before adding refrigerant. Simply adding refrigerant without fixing the leak is a temporary and wasteful solution.

A: R-22 (also known as Freon) is an older refrigerant that was widely used in air conditioners manufactured before 2010. The U.S. Environmental Protection Agency phased out R-22 production and importation as of January 1, 2020, because it is a hydrochlorofluorocarbon (HCFC) that depletes the ozone layer. R-22 is still available from recycled and reclaimed supplies but is very expensive. If your system uses R-22 and has a refrigerant leak, replacement with a new system using modern refrigerant (R-410A or R-32) is often more cost-effective than repairing the leak and recharging with expensive R-22.

A: Several steps can improve HVAC energy efficiency: replace your air filter regularly, schedule annual maintenance tune-ups, seal duct leaks (duct leakage can waste 20-30% of conditioned air), add insulation to your attic and walls, seal air leaks around windows and doors, install a programmable or smart thermostat, upgrade to a high-efficiency HVAC system, and consider adding a whole-home dehumidifier to reduce the load on your AC.

A: A programmable thermostat allows you to set different temperature schedules for different times of day and days of the week. For example, you can set the temperature higher when you are at work and lower when you are home. This can reduce energy consumption by 10-15% or more. Smart thermostats go further, learning your preferences, allowing remote control via smartphone, and providing energy usage reports. We recommend smart thermostats for most homeowners — they typically pay for themselves within the first year.

A: Your air conditioner removes humidity as a byproduct of cooling, but it may not be able to keep up with high humidity levels in Texas. Common causes of excess indoor humidity include: an oversized AC system that cools quickly without running long enough to dehumidify, a dirty evaporator coil reducing dehumidification capacity, duct leaks pulling humid air from unconditioned spaces, or simply very high outdoor humidity. A whole-home dehumidifier can address humidity issues that your AC cannot handle alone.

A: Duct sealing involves finding and sealing leaks in your home's ductwork. The U.S. Department of Energy estimates that the average home loses 20-30% of conditioned air through duct leaks. This means your HVAC system is working 20-30% harder than necessary, wasting energy and money. Signs of duct leaks include rooms that are difficult to heat or cool, high energy bills, and excessive dust. Duct sealing with mastic sealant or metal tape (not duct tape, which fails over time) can significantly improve comfort and efficiency.

A: A cracked heat exchanger is a serious safety issue that can allow carbon monoxide to enter your living space. Signs of a cracked heat exchanger include: a carbon monoxide detector alarm, soot or black marks around the furnace, a yellow or flickering burner flame (should be blue), unusual odors when the furnace runs, or family members experiencing headaches, nausea, or flu-like symptoms that improve when they leave the home. If you suspect a cracked heat exchanger, turn off your furnace and call us immediately.

A: If your AC evaporator coil freezes, turn the system to "fan only" mode (not off, not cool) to allow the ice to melt. This may take 2-4 hours. Do not run the AC in cooling mode while the coil is frozen — this can damage the compressor. Once the ice has melted, check and replace your air filter if it is dirty. If the system freezes again after the filter is replaced, call a technician — you likely have a refrigerant leak or airflow problem that requires professional diagnosis.

A: AFUE stands for Annual Fuel Utilization Efficiency. It measures how efficiently a furnace converts fuel into heat over an entire heating season. An 80% AFUE furnace converts 80% of the fuel it consumes into heat, wasting 20% up the flue. A 96% AFUE furnace wastes only 4%. Higher AFUE means lower operating costs. The minimum AFUE for new furnaces is 80%. High-efficiency furnaces range from 90-98% AFUE. The payback period for a high-efficiency furnace depends on your local gas rates and heating usage.

A: If your HVAC system stops working, try these steps before calling for service: Check your thermostat settings and replace the batteries if needed. Check your circuit breaker panel for a tripped breaker — reset it if tripped. Check your air filter and replace if dirty. Check that all supply and return vents are open and unobstructed. Some systems have a reset button on the air handler or furnace — check your owner's manual. If the system still does not work after these steps, call a technician.

A: A split system has two separate components: an outdoor unit (condenser/compressor) and an indoor unit (air handler/furnace). The two units are connected by refrigerant lines and electrical wiring. Split systems are the most common type of residential HVAC system. A package unit contains all components — compressor, condenser coil, evaporator coil, and air handler — in a single outdoor cabinet. Package units are typically installed on a concrete pad or rooftop and connect to the home's ductwork through the wall or roof. Package units are common in the South and Southwest.

A: A ductless mini-split system consists of an outdoor compressor unit and one or more indoor air handlers mounted on walls or ceilings. The indoor and outdoor units are connected by a small conduit containing refrigerant lines and electrical wiring. Mini-splits do not require ductwork, making them ideal for room additions, garages, sunrooms, older homes without existing ductwork, and other spaces where extending ductwork is impractical. Each indoor unit can be controlled independently, providing excellent zone control.

A: A common rule of thumb is the "5,000 rule": multiply the age of the system by the repair cost. If the result exceeds $5,000, replacement is likely more cost-effective. For example, a 10-year-old system with a $600 repair = $6,000, suggesting replacement. Other factors favoring replacement include: the system uses R-22 refrigerant, the system requires frequent repairs, energy bills have been steadily increasing, the system is more than 15 years old, or the system no longer keeps your home comfortable.

A: We install all major brands of HVAC equipment including Carrier, Trane, Lennox, Rheem, Goodman, American Standard, York, Bryant, Heil, and Ruud. We can also service and repair virtually any brand of HVAC equipment. When recommending equipment for installation, we consider the specific needs of your home, your budget, and the long-term reliability and parts availability of the equipment.

A: Yes, we work with financing partners to offer flexible payment options for HVAC installations and major repairs. Financing allows you to replace your system now and pay over time, rather than waiting until your old system fails completely — often at the worst possible time. Contact us to discuss financing options for your specific situation.

A: HVAC installations in Texas typically require permits from the local municipality or county. Permit requirements vary by location, but most jurisdictions require permits for new HVAC installations and system replacements. Rodriguez Climate Control LLC handles all required permits as part of our installation service. We are licensed by the Texas Department of Licensing and Regulation (TDLR) and comply with all applicable codes and regulations.

A: Signs that your ductwork may need repair or replacement include: rooms that are difficult to heat or cool, excessive dust in your home, high energy bills, visible damage to accessible ductwork (tears, disconnected sections, crushed ducts), musty odors from vents, or a system that is more than 15-20 years old. A professional duct inspection can identify leaks and damage. In many cases, duct sealing and repair is more cost-effective than full replacement.

A: A zoning system divides your home into separate temperature zones, each controlled by its own thermostat. Motorized dampers in the ductwork open and close to direct conditioned air to the zones that need it. Zoning allows different areas of your home to be maintained at different temperatures, improving comfort and reducing energy waste. Zoning is particularly beneficial for two-story homes (where upper floors are often warmer), homes with large windows or sun-facing rooms, and homes where different family members prefer different temperatures.

A: To maintain your outdoor condenser unit: keep the area around the unit clear of vegetation, debris, and obstructions (maintain at least 2 feet of clearance on all sides). Gently rinse the condenser coil fins with a garden hose to remove dirt and debris (spray from inside out). Do not use a pressure washer. Keep the unit level on its pad. Do not cover the unit in winter — it is designed to be outdoors year-round. Schedule annual professional maintenance to clean the coil thoroughly and inspect all components.

A: The U.S. Department of Energy recommends setting your thermostat to 78°F when you are home and cooling, and higher when you are away or sleeping. For heating, 68°F when home and awake, and lower when sleeping or away. Each degree of adjustment can save approximately 1% on your energy bill. A programmable or smart thermostat makes it easy to maintain these settings automatically without sacrificing comfort.

A: Uneven temperatures throughout your home can be caused by: duct leaks losing conditioned air before it reaches certain rooms, undersized or improperly balanced ductwork, closed or blocked supply or return vents, poor insulation in certain areas, air leaks around windows and doors, or an improperly sized HVAC system. A professional HVAC technician can perform a system evaluation to identify the cause of uneven temperatures and recommend solutions.

A: UV air purifiers use ultraviolet light to kill or neutralize airborne microorganisms including bacteria, viruses, mold spores, and other biological contaminants. UV-C light damages the DNA of microorganisms, preventing them from reproducing. UV air purifiers installed in your HVAC system treat all the air that circulates through your home. They are particularly effective at preventing mold growth on evaporator coils and reducing biological contaminants in the air. They are most effective when combined with a high-quality air filter.

A: Signs of a refrigerant leak include: your AC is not cooling as well as it used to, ice forming on the refrigerant lines or evaporator coil, hissing or bubbling sounds near the refrigerant lines, higher than normal energy bills, or your AC runs constantly without reaching the set temperature. If you suspect a refrigerant leak, call a technician — refrigerant leaks must be repaired before adding refrigerant, and handling refrigerants requires EPA certification.

A: R-410A has been the standard refrigerant for residential air conditioners since R-22 was phased out. R-32 is a newer refrigerant with a lower global warming potential (GWP) than R-410A. The HVAC industry is transitioning to lower-GWP refrigerants including R-32 and R-454B as part of ongoing environmental regulations. New systems being introduced to the market are increasingly using these newer refrigerants. When selecting a new system, ask about the refrigerant type and its long-term availability.

A: Yes, Rodriguez Climate Control LLC offers 24/7 emergency HVAC service throughout our service area. We charge the same rates for emergency service regardless of the time of day or day of the week — no overtime surcharges. When you call our emergency line, you speak directly with a live technician. Call (940) 393-1221 for emergency service.

A: Most residential HVAC installations are completed in one day. A straightforward system replacement (same location, same configuration) typically takes 4-8 hours. More complex installations involving new ductwork, electrical upgrades, or unusual configurations may take longer. We will give you a realistic time estimate when we provide your installation quote. We work efficiently to minimize disruption to your home and daily routine.

A: All HVAC equipment we install comes with the manufacturer's warranty, which typically covers parts for 5-10 years (longer with registration). We also provide a workmanship warranty on our installation labor. Specific warranty terms vary by equipment and manufacturer. We will explain all warranty coverage when we provide your installation quote. To maintain your manufacturer's warranty, annual professional maintenance is typically required.