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Is Your Home Ready for Allergy Season? HVAC Tips for Clean Air During the Spring

Are you dreading spring’s arrival because it means allergy symptoms will soon follow? At Bob Jenson Air Conditioning & Heating, we value the importance of clean indoor air.

Your home should provide relief from irritants. Proper HVAC preparation can reduce indoor allergens and improve air quality.

Prepare Your HVAC System for Spring Allergy Relief

Prepping your HVAC system before allergy season begins can dramatically improve indoor air quality. Regular HVAC system maintenance means your equipment efficiently filters allergens and maintains healthy circulation.

Professional inspections and servicing help you identify potential issues, such as leaky ductwork or malfunctioning components. Schedule this service in late winter or early spring to ensure your system is ready when needed most.

 Upgrading to higher-quality filtration can capture irritants before they circulate. Follow these HVAC tips for clean air during the spring:

  • Use HEPA air filters to capture fine particles, including pollen and pet dander.
  • Replace filters every 30 to 45 days during peak allergy season.
  • Clean filter frames and surrounding areas to prevent dust from bypassing the filter.

Install Advanced Systems for Pollen-Free Indoor Living

Beyond basic maintenance, several advanced options can dramatically improve the indoor environment. These solutions work with your HVAC system to create a comprehensive approach to allergen reduction.

Professional duct cleaning removes accumulated allergens from your air distribution system. Over time, ductwork harbors dust, pollen, and irritants that continuously recirculate throughout your home. Thorough cleaning substantially reduces these particulates.

Air purification systems provide another layer of protection against indoor allergens. Technicians install these systems directly into your existing HVAC setup for whole-home filtration.

Managing Humidity for Allergen Control

Humidity levels play a crucial role in allergen development and persistence. Excessive moisture promotes mold and dust mites, while overly dry air worsens respiratory issues. Consider these options for controlling humidity:

  • Whole-home dehumidifiers automatically maintain optimal moisture levels.
  • Smart humidity systems adjust according to outdoor conditions and indoor requirements.

Extend HVAC Protection to Key Living Areas

While your HVAC system forms the foundation of your indoor air quality strategy, complementary approaches enhance its effectiveness. You need to consider allergens that may have built up on surfaces throughout your home.

Mold and allergen prevention begins with addressing moisture issues in bathrooms, kitchens, and basements. Proper ventilation, leak repairs, and regular cleaning reduce mold spores.

Focus special attention on bedrooms by using allergen-proof covers, washing bedding weekly in hot water, and keeping windows closed during high pollen days.

Breathe Easier This Spring With Bob Jenson Air Conditioning & Heating

Implementing these HVAC tips for clean air during the spring can transform your home into a relaxing sanctuary. At Bob Jenson Air Conditioning & Heating, we specialize in helping homeowners create healthier indoor environments through comprehensive HVAC solutions. 

Our technicians can recommend the perfect combination of filtration, purification, and humidity control systems for your allergy concerns. Contact us at (760) 678-7968 to learn more about our HVAC solutions.

Why Your Heater Keeps Turning On and Off – And How To Fix It!

Are you frustrated because your heater keeps turning on and off constantly, disrupting your home’s comfort and potentially driving up your energy bills? You’re not alone! Many homeowners struggle with unreliable heating systems that seem to have a mind of their own.

Reasons Why Your Heater Keeps Cycling On and Off

Short-cycling is a complex issue that can wreak havoc on your home’s heating system. Here are the most common reasons your heater might be behaving erratically:

  • Dirty filters causing airflow blockage: When your filters clog with dust, debris, and allergens, they force your heating system to work overtime, causing it to overheat and shut down frequently.
  • Thermostat malfunction or incorrect placement: A thermostat positioned near heat sources or with faulty wiring can send incorrect temperature signals, causing your heater to cycle unpredictably.
  • Oversized heating system: A furnace that’s too large for your home will heat spaces too quickly, leading to rapid cycling and inconsistent temperatures.
  • Blocked or closed air vents: Obstructed vents prevent proper air circulation, causing your heating system to struggle and shut down unexpectedly.
  • Damaged heat exchanger: This critical component can cause serious short-cycling issues and potentially create safety risks for your home.
  • Malfunctioning blower motor: When the blower motor fails to circulate air properly, it can trigger repeated system shutdowns.
  • Blocked flue pipe: Obstructions in the exhaust system can cause automatic safety shutoffs, interrupting your heating cycle.

How To Fix Your Heater’s Short-Cycling Problem

Addressing a heater that keeps turning on and off requires a systematic approach. Here are effective solutions to resolve your heating system’s erratic behavior:

  • Replace air filters regularly: Swap out your filters every few months to ensure unobstructed airflow and optimal system performance.
  • Check and clean air vents: Ensure all vents are open and free from furniture, curtains, or other obstructions that might impede air circulation.
  • Verify thermostat functionality: Test your thermostat’s accuracy and consider professional calibration or replacement if it shows signs of malfunction.
  • Schedule a professional HVAC inspection: A trained technician can diagnose complex issues like heat exchanger damage or blower motor problems.
  • Consider system sizing: If your furnace is too large, a professional can help you evaluate whether a replacement with the correct size is necessary.
  • Perform consistent maintenance: Regular tune-ups can prevent many short-cycling issues before they become major problems.

Bob Jenson Air Conditioning & Heating: Your Reliable Heating Partner in San Diego

We understand how disruptive and concerning heater issues can be. Bob Jenson Air Conditioning & Heating is your trusted partner in maintaining a reliable, efficient heating system. Our experienced HVAC professionals offer comprehensive heating system inspections that identify the root causes of short-cycling. 

If your heater keeps turning on and off in San Diego, or if you’re experiencing other HVAC issues, contact Bob Jenson Air Conditioning & Heating at 858-206-9303 today. Our expert technicians are standing by to provide professional HVAC solutions you can trust!

New Year, New HVAC: Top Reasons for a New and Improved System

As winter temperatures fluctuate and energy costs rise, you might wonder whether your aging heating and cooling systems can keep up with your comfort needs. Installing a new HVAC system represents a significant investment in your home’s comfort and efficiency, and 2025 might be the year for you to make this upgrade

At Bob Jenson Air Conditioning & Heating, we understand that deciding when to upgrade your system requires careful consideration of multiple factors. In this guide, we’ll explain why a new HVAC installation might be the right choice for your home.

Understanding Modern HVAC Technology

Today’s heating and cooling systems offer remarkable advances in technology and functionality. The air handler components work seamlessly with other system elements to maintain precise temperature control throughout your home.

A modern heat pump can both heat and cool your home, operating efficiently in San Diego’s mild climate. These versatile systems extract warmth from outdoor air during cooler months and reverse the process for summer cooling.

The latest units offer enhanced performance and require significantly less energy, which is vital for many California homeowners. 

The Benefits of Upgrading Your System

Your home’s comfort system directly impacts daily living quality and monthly utility expenses. A new HVAC installation provides several key advantages for homeowners.

The latest systems achieve impressive energy efficiency ratings, potentially reducing monthly utility costs. Modern units use advanced refrigerant formulations that offer improved performance while being more environmentally responsible.

You can enjoy these premier benefits:

Smart Temperature Management

Contemporary HVAC systems incorporate sophisticated zoning system capabilities. This technology allows you to create customized temperature zones throughout your home, ensuring comfort while minimizing energy waste.

You can precisely control temperatures in different areas based on occupancy and personal preferences. Smart thermostats enhance this functionality by learning your schedule and automatically adjusting settings for optimal efficiency.

Improved Performance Metrics

Understanding performance ratings helps you make an informed decision about your new system. The SEER (Seasonal Energy Efficiency Ratio) rating indicates cooling efficiency, with higher numbers representing better performance.

Modern systems typically achieve SEER ratings of 16 or higher, compared to older units that might only reach 10. This improvement in efficiency can translate to significant energy savings over the system’s lifetime and a reduced carbon footprint for your home.

The Impact on Home Comfort

A new HVAC system provides more than just temperature control. Advanced filtration systems capture airborne particles more effectively, while variable-speed technology maintains consistent comfort levels.

Newer systems operate more quietly and respond more quickly to temperature adjustments. This responsiveness helps maintain steady comfort levels and air quality throughout your home’s living spaces.

Bob Jenson Air Conditioning & Heating: Your Comfort Solution

When considering a new HVAC system, expertise matters. At Bob Jenson Air Conditioning & Heating, we take pride in helping San Diego homeowners achieve optimal indoor comfort through energy-efficient HVAC solutions. 

Our team specializes in tailoring systems to meet your needs and budget requirements. For expert guidance on upgrading your comfort system, contact Bob Jenson Air Conditioning & Heating at (858) 206-9303 to discuss new HVAC options for your San Diego, CA, home.

How To Spot Bad Ductwork

Ventilation and airflow are the absolute lifeblood of every HVAC system. When ductwork fails, systemic problems are likely to escalate rapidly, making knowing how to spot bad ductwork an essential part of ordinary maintenance. 

Below, our team at Bob Jenson Air Conditioning & Heating, San Diego’s top HVAC expert since 1977, discusses some of the leading warning signs that your ductwork may be due for inspection, maintenance, or replacement. 

Uneven Temperatures in Your Home

A common sign of ductwork trouble is uneven heating or cooling from room to room inside your home. This is typically related to poor duct design, leaks, or blockages.

When air can’t move freely through your ductwork, your HVAC system will struggle to maintain consistent temperatures and operate under undue stress, wasting energy and risking breakdowns. 

Weak or Poor Airflow

Has the airflow coming from any of your system’s vents become weak, irregular, or nonexistent? You can perform a simple home test to check for this by holding a piece of paper near a vent. If it barely moves, your ducts may have leaks, blockages, or improperly sized sections.

Weak airflow is also a warning sign of inefficient HVAC operation that can shorten your equipment’s lifespan.  

Strange Noises From the Ducts

While some noise is normal when your HVAC system is running, unusual sounds like rattling, whistling, or banging are sure signs of problems.

These noises often occur when sections of the ductwork become loose or disconnected. If ductwork is improperly installed, it can also eventually begin rattling or banging. These sounds are likely indications of significant air loss, directly cutting into your system’s efficiency.

Increased Energy Bills

Many times, the first sign of airflow issues related to ductwork trouble comes as an unexpected surge in utility bills. Leaky or broken ducts drain the cool or warm air your system generates before it ever reaches your living space. This means you are paying to run your HVAC system much longer than normal to produce the standard level of climate control.

Visible Damage and Dust Buildup

During regular household cleaning, check for any visible damage to your vents or ducts, like cracks, gaps, or disconnected sections. Also, look for excessive dust buildup in your home. Damaged ducts allow dirt, dust, and other contaminants to bypass your filter and enter the system, reducing indoor air quality.  

Call Bob Jenson Air Conditioning & Heating To Inspect and Remedy Bad Ductwork

Now that we’ve discussed how to spot bad ductwork, call our friendly professionals at Bob Jenson Air Conditioning & Heating for a full ductwork inspection and assessment of your HVAC system if you see signs of trouble. 

Whether your system needs minor adjustments or age has taken its toll and you should consider more extensive remediation or replacement, we’ll provide you with straightforward advice and our honest assessment of your best options. 

Call our team at Bob Jenson Air Conditioning & Heating today at (858) 294-0578 to schedule an appointment along with regular maintenance to keep your ducts and HVAC system in top shape.

HVAC Repair vs. Replacement | What’s the Best Choice for Your Home?

When a unit in your HVAC system breaks down, you’re left scratching your head over whether you should repair or replace it. You’ll have to spend a small fortune to replace it, but sticking to repairs could add up over time if you’re always repairing it. So, what’s a homeowner to do?

Bob Jenson can help with all your repair and replacement woes. We can help you learn more about HVAC repair vs. replacement to learn how to choose; when in doubt, give us a call.

The Difference Between HVAC Repair vs. Replacement

Ask homeowners if repairing or replacing is better, and you’ll get a mixed bag of results. Repairing is often better for small problems since the HVAC technician can replace a simple part or two.

If your system is riddled with issues, replacing it might be better. While it doesn’t make sense to replace an air conditioner when it’s just a problem with the fan, it doesn’t make sense if it’s the fan, evaporator coils, refrigerant, and condenser. Some homeowners may choose to continue repairing until they can’t anymore, so it’s ultimately up to you and your wallet.

How To Determine the Best Choice

In the great debate of HVAC repair vs. replacement in San Diego, CA, we encourage you to give Bob Jenson a call to clear it up. That said, if you’re struggling to make a decision, you should think about these factors:

  • Age: Systems less than 10 years old still have a lot of life left in them. If the unit is over 10 years old and maintained annually, you can probably get by with a repair, but if you didn’t maintain your old unit, it’s time to upgrade. Otherwise, you’ll notice rapid performance degradation.
  • Warranty: Check if your equipment warranty is still valid to determine if you should repair or replace your unit.
  • HVAC repair vs replacement cost: Ask your HVAC technician for price estimates of repairing and replacing so you can make a thorough cost analysis.
  • Repair frequency: How often have you repaired your HVAC system lately? If it’s becoming increasingly more common, you’re probably due to replace it soon. Repairs will only happen more often as the end of the system lifespan approaches.
  • Energy efficiency: An aging system that’s no longer energy efficient causes noticeable monetary and environmental impacts. Upgrading will do a lot of good for you and the planet.
  • Financial incentive: You may be eligible for government incentives to upgrade your HVAC system to more eco-friendly equipment. Consider this before you choose to repair your outdated system again.
  • Moving: If you’re moving houses in the near future, ask yourself if replacing the unit is worth it. A new unit may increase your property value, but consider the possibility of needing to replace the unit in your new home soon.

Call Bob Jenson for All Your HVAC Needs

Let the Bob Jenson crew settle the HVAC repair vs. replacement debate for you. We can inspect your unit and give you our advice. Or, if you made a decision already, call us at (619) 324-3633 to schedule our AC repair services in San Diego, CA.

San Diego’s Trusted Heating Solutions: Preventative Steps for Reliable Warmth

How To Prevent Heating Breakdowns & Costly Repairs

As the San Diego sun dips below the horizon and the evenings usher in a chill, the thoughts of many homeowners turn to the cozy confines of their homes. Whether you’re returning from a day of surfing at La Jolla Cove or a hike through the Torrey Pines State Reserve, a reliably warm home is a welcome retreat. Yet, amid the holiday preparations and the dropping temperatures, the last thing anyone needs is a heating breakdown. Staying ahead with savvy heating maintenance is not just a convenience—it’s a necessity. 

Securing Serenity With Seasonal Heating Strategies

Heating maintenance is not merely a task to be checked off but a cornerstone of tranquil living and robust system performance. At Bob Jenson Heating and Air Conditioning, we consider every nuance of San Diego’s unique climate, customizing our approach to safeguard your home against unexpected chills and efficiency dips. 

Our service is a tapestry of technical expertise and preventative strategy, extending the lifespan of your heating equipment and preserving the cozy ambiance of your home. By embracing the latest in heating technology and proactive care, we not only maintain your system’s reliability but also enhance the air quality within your home, ensuring that every breath you take is a testament to the purity and precision of our work. 

With us, your peace of mind is guaranteed; we’re dedicated to providing a warmth that’s not just felt but also trusted, making Bob Jenson synonymous with unwavering comfort in San Diego, CA, and beyond.

Safeguard Your Sanctuary: Proactive Steps to Heating Maintenance

Taking the initiative for heating maintenance can be as rejuvenating as a walk on the sunny shores of Coronado Beach. But it’s not just about feeling good—it’s about being smart with your home heating solutions. Let’s walk through the proactive measures you can take to avert the inconvenience of repairs, with a call to action for San Diego residents: Engage with Bob Jenson for impeccable heating maintenance services.

  • Regular Inspections 
  • Change Air Filters
  • Thermostat Management
  • Ductwork Diligence 
  • Professional Tune-ups 

 

Regular Inspections: Your Shield Against the Unexpected

Commitment to regular inspections is a cornerstone of heating maintenance in San Diego, CA. At Bob Jenson, we liken our routine check-ups to a seasoned captain inspecting their vessel before setting sail; it’s our way of ensuring your heating system is seaworthy for the cooler months ahead. When we scrutinize your heating unit, we’re not only ticking boxes but analyzing performance, anticipating needs, and strategizing the best course to avoid heating hiccups. With our experienced eyes on your system, you can rest easy knowing that potential issues are identified and addressed long before they become costly ordeals, keeping your home’s comfort as constant as the Pacific tides.

Air Filters: The Unsung Heroes in Your HVAC System

Air filters may seem like a small part of your home heating system, but they play a pivotal role in maintaining the air quality and efficiency of your heat oasis in San Diego. At Bob Jenson, we ensure your filters are in prime condition, capturing dust and allergens, optimizing airflow, and safeguarding your indoor air. 

Think of them as the gatekeepers to your comfort castle, quietly working round the clock. By having us regularly replace these silent protectors, you’re not only preserving the purity of your home’s air but also enhancing your system’s longevity and reducing the strain on your wallet from energy overuse. Let us maintain a vigilant watch over your air filters so the only thing you’re breathing in is peace of mind.

Thermostat Management: The Conductor of Your Comfort Symphony

Navigating the nuances of thermostat management can be the difference between a harmonious home climate and a series of temperature tantrums. Here at Bob Jenson, we take the baton to fine-tune your home’s heating melody. Our experts in heating maintenance in San Diego can help you program your thermostat for optimal performance—adapting to your lifestyle and seasonal changes with precision. 

We’re not just setting temperatures but orchestrating an energy-efficient performance that harmonizes with your daily rhythm. By leveraging advanced thermostat settings, we can help you save on energy bills and extend the life of your heating system, allowing you to step back and enjoy the symphony of a perfectly heated home.

Ductwork Diligence: Pathways to Peak Performance

Your home’s ductwork is the hidden highway for warmth, and diligent care of these pathways is essential for an efficient heating system in San Diego, CA. At Bob Jenson, we inspect your ducts and ensure they are free of debris and obstructions that can restrict airflow and strain your heating system. 

Our thorough ductwork diligence means we meticulously seal any leaks and insulate where necessary, which translates to consistent temperatures, reduced energy costs, and a quieter operation. You can expect nothing less than the smooth and efficient delivery of heat to every corner of your sanctuary, ensuring comfort is evenly distributed throughout your living space.

Professional Tune-Ups: The Heartbeat of Home Comfort

A professional tune-up by Bob Jenson is like a wellness check for your heating system, keeping the heartbeat of your home comfort strong and steady. Our team, well-versed in the specific needs of heating maintenance for San Diego homes, goes beyond the basics. We meticulously calibrate, lubricate, and test all components to ensure they’re in top-notch condition. These tune-ups are not just preventative measures—they’re performance enhancers that reduce the risk of breakdowns during those cool Pacific evenings and save you money by improving energy efficiency. Regular professional tune-ups by our seasoned experts ensure that when you need warmth the most, your heating system performs like a champion, year after year.

Take the Leap to Long-Lasting Warmth

As the city’s twinkling lights mirror the starry skies, ensure that your San Diego home remains a bastion of warmth and reliability throughout the cooler months. Steer clear of the disruptions of heating breakdowns with Bob Jenson’s professional heating maintenance services. Ready to fortify your home against the chill? Reach out to us today, and let’s keep your living space as inviting as San Diego’s endless summer.

2023 Best of Houzz Service Award!

We are very thankful to our customers who take the time to share their great experiences which lead to awards like the 2023 Best of Houzz Service Award!

At Bob Jenson Air Conditioning, people will always be at the center of our business. It baffles us that in the comfort industry, San Diegans have so many “uncomfortable” experiences in buying, repairing, and maintaining their home HVAC systems. If you focus on what’s right for the customer and make that the most important thing while maintaining a high standard of work, it’s easy to make people happy. Thanks again for your continued loyalty and praise of our team, we are proud to receive the 2023 Best of Houzz Service Award!

Air Ducts and Registers; Why They are Important


Quicklinks to other articles in this series:

What Are Air Ducts and Registers?

Air Ducts and Registers

Air ducts are the intricate system of tubes and related parts that distributes the airflow of your air conditioner (and HVAC system at large) throughout your home or commercial building.

Registers at the end of each air duct direct the airflow within a room or space. Supply air registers are not returns; they do not bring air back into an HVAC system. A return will have a permanent, unmovable grille. In addition, supply air registers and returns are also called “vents”.

Where Are Air Ducts & Registers Located?

Air ducts are located behind walls and floors and are visible in crawlspaces, attics, and basements or cellars. Some split-system air conditioners do not use conventional ducting, though ductless air conditioning may not be right for all homes or businesses.

Registers are installed on metal cans in the opening of a wall. For example, either up high toward the ceiling or near the base of a wall. Also registers are found in floors in older homes .

How Do They Each Work?

Apart from the air ducts themselves, ducting includes other crucial components:

  • Vibration isolators, which minimize an operating HVAC system’s vibration
  • Metal cans allow the flow of air to move from the ducts to the registers
  • Dampers, which adjust the volume of air
  • Vanes, which smooth out air flow around turns

in order to have a balanced, comfortable home, careful sizing and placement of return and supply air ducts and registers is important.

Registers have bars that you can control with an adjustable damper (a lever, knob, or another movable part on one side of the register) to reduce or direct airflow.

What Makes Them Important?

Ducting acts as the arteries and veins of your air conditioning system. They deliver the right amount of cool air to each room in your home or commercial space.

Registers help control the comfort level of a space by providing a way to direct airflow at the point it enters a room.

Different Types of Air Ducts and Registers

Flexible Ducting

Ducts come in many, many styles and shapes, including oval, round, and rectangular, and they are formed from materials as varied as fiberglass, galvanized steel, aluminum, polyurethane panels, and plastic. Don’t be confused by pipes that transfer refrigerant or other vapors and liquids; air only moves thru ducts.

Registers come in various materials, including aluminum, steel, and even wood. Many people buy registers and returns with custom-designed slats or decorative covers.

(Note: for a list of outdated ductwork in the Southern California, check out this blog post.)

Maintenance and Repairs

Do you smell a faint, musty scent of dirty laundry? That could indicate mold is growing in your ducting. You may want to call a professional technician to inspect your ductwork. They can detect the presence of mold and accumulated dust, which can make you sick.

Despite the name, duct tape is not suitable for sealing up ducts. Instead, to ensure ducts don’t leak, heat and uv resistant tape is used .

Though vents are not the typical cause of an HVAC malfunction, they can contribute to one. Check registers for any debris that builds up. Or for loose, cracked, or broken vent covers. When switching out vent covers, be sure to take accurate measurements to purchase the correct replacements. Occasionally wipe your registers with a damp cloth to remove any accumulated dust and debris.

How the Indoor Coil and TXV Work


Quicklinks to other articles in this series:

What Are the Indoor Coil and TXV?

Indoor Coil and TXV
THERMAL EXPANSION VALVE OR TXV

The indoor coil is the portion of the air conditioner that absorbs the hot air from inside your home and transfers it to the refrigerant. It pairs with the condenser coil to create a continuous loop of heat transfer.

The TXV, which stands for thermostatic expansion valve, acts as a metering device for air conditioning systems. It regulates the rate at which liquid refrigerant flows into the indoor coil.

Where Are They Located?

An indoor coil will be located inside your home or business. The installation of the indoor coil is in line with the furnace, in a closet or in the attic.

You will likely find the TXV mounted near the indoor coil on the liquid line. Also the sensing bulb is mounted to the outside of the larger suction line.

How Do The Indoor Coil and TXV Work?

The radiator-like device mounted in the airstream is the indoor coil. As warm indoor air passes over the evaporator coil, heat from the home is absorbed into the refrigerant. Likewise moisture is naturally removed from the air . The combination of cooling and dehumidification provides the total cooling effect for the home. In contrast, a heat pump reverses this process. In the winter, heat transfers from the refrigerant into the home or business thru the indoor coil.

Through the liquid line, refrigerant enters the TXV valve at a high pressure. The TXV limits the amount of refrigerant entering the evaporator thus reducing it’s pressure. Along with this pressure drop, the saturation temperature, or “boiling point” of the refrigerant drops as well. This allows a change of state from liquid to gas which is the most efficient time to transfer large amounts of heat from the surrounding air into the refrigerant.

What Makes Them Important?

A well-maintained indoor coil is, along with the outdoor coil, essential to an efficient air conditioning system. Indoor coils that have fallen into disrepair will not be able to transfer heat effectively, causing your home or business to feel less cool. Restricted airflow to the coil can cause the coil to start icing up and even freeze over.

After regulation changes in 2006, most air conditioning systems now require a TXV. It controls the refrigerant flow to create maximum efficiency for the indoor coil. It also prevents excess refrigerant from returning to the compressor and flooding it.

Different Types of Indoor Coils and TXVs

The most common indoor coils in air conditioning systems are divided into three types:

“A” coils, which get their name from the shape they take, are common for vertically aligned air conditioners.

Indoor Coil Uncased
INDOOR COIL UNCASED

“N” or “W” coils, also named for their shape, work for vertical or horizontally aligned systems. They are smaller than other options.

Slab coils are less common and used for horizontally aligned air conditioning systems.

Similarly, uncased coils are uncommon as well. They easier to build as custom coils for unusual air conditioner designs. A third indoor coil design is the vertical coil, which is suitable for upward and downward air flow.

TXVs come in two major types, internally equalized and externally equalized, which refer to how the TXV senses pressure. Indoor coils with multiple refrigerant circuits typically use an externally equalized TXV.

Maintenance and Repairs

Dirty indoor coils are less efficient, sapping your air conditioner of its efficiency and leading to energy usage up to 30% above average. You can save money and keep cool by checking your air conditioner’s air filter monthly and replacing it as necessary. If you notice that the air filter looks “domed,” this is a sign that the air conditioner is not receiving enough airflow. Replace the filter immediately.

Do not attempt to clean the fins on the indoor coil as they are quite delicate and can bend easily. Instead, call a professional technician who has the right tools and expertise.

A faulty TXV forces an air conditioning system to work harder than necessary, putting stress on other components. Also improper installation of the TXV bulb, such as mounting it to the underside of the indoor coil’s output line, might provide false readings and cause malfunctions.

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