Transform Your Home Comfort with Smart Temperature Zoning and Sensors

Home thermostats regulate HVAC systems to maintain a comfortable temperature, but fixed wall placement can limit flexibility. While some homes use multiple thermostats to create different zones, a single thermostat with temperature sensors in key rooms can achieve effective multi-zone heating and cooling, optimizing both comfort and energy efficiency.

For instance, if your hallway thermostat is set to 68 degrees, it shuts off the HVAC once the hallway reaches that temperature. However, bedrooms—often cooler than hallways—may still feel too cold. By placing a temperature sensor in each room, you can prioritize where you want comfort most at specific times of day. During the day, a sensor in the living room can keep it precisely at 68 degrees, while at night, a bedroom sensor ensures comfortable sleeping conditions by adjusting the thermostat accordingly.

Temperature sensors offer more than comfort—they can protect specialized spaces like wine cellars by monitoring temperature and humidity, alerting you if conditions fall outside safe ranges. They can also enhance safety, detecting temperature spikes indicative of fires and triggering alarms.

Smart home compatibility with platforms like Alexa, Google Assistant, and Apple HomeKit means you can monitor and control temperatures from your phone or with simple voice commands.

Ready to make your home smarter, safer, and more comfortable? Contact us at (650) 575-3915 today to learn more about integrating temperature sensors into your space.

Simple test to see if your AC is working

HVAC is probably the biggest energy drain in any house. This leads to a higher energy bill every month when the furnace or the AC is used a lot. Keeping your heating and cooling systems running efficiently is a good way to keep the energy costs down.

Efficiency going down can also be an indication of larger issues. Such issues if left alone could end up costing a lot more eventually.

It is a good idea to see if the heater or the AC is working well. One simple way that doesn’t require any complex instruments is by taking the temperature at the vents. Vents are where the air from the HVAC system is pushed into the house.

There are 2 types of vents: a return vent and the register. The return vent is from where the air in the house is pulled into the HVAC system. This air is then cooled (or heated) and pushed into the house through the registers.

You can tell which one is the return air and which one is the register by looking at their coverings. The return air generally can’t be closed whereas the air coming through the registers can be directed or closed using the lever.

Take the temperature differential

To begin, let the AC run for 15 minutes. This will give the AC enough time to get started and start pushing in cooled air through the registers.

First take the temperature at the return air. This is the temperature of the room/house.

Now take the temperature at one of the registers. There should be a 15-20 degree temperature differential between the 2 temperatures.

If the temperature differential is less than 20 degrees, then this means that the house isn’t getting cooled and the HVAC is simply moving the air around.

Between 15 and 20 degree differential means that the air conditioner is working well.

If it is below 15, it is time to call your local HVAC technician.

If you are in the San Francisco Bay area, call us at 650-575-3915.

The Future of Comfort: Exploring Ductless Mini-Split Systems

In the realm of heating and cooling, innovation has led to more efficient and versatile solutions. Ductless mini-split systems are a prime example of this evolution, providing homeowners with a flexible and energy-efficient alternative to traditional HVAC systems. In this article, we’ll delve into the world of ductless mini-split systems, exploring their technology, benefits, and why they are gaining popularity in the modern era of home comfort.

What Are Ductless Mini-Split Systems?

Ductless mini-split systems, often referred to as mini-splits, are heating and cooling systems that offer precise temperature control without the need for ductwork. These systems consist of two main components: an outdoor compressor/condenser unit and one or more indoor air-handling units. Refrigerant lines connect these components, allowing for the transfer of heat to and from the indoors. Unlike traditional central HVAC systems that rely on ducts to distribute conditioned air, mini-splits deliver air directly into the living spaces they serve.

Technology Behind Mini-Splits

The key technology that makes ductless mini-split systems efficient and versatile is inverter technology. Inverter-driven compressors constantly adjust their speed to maintain the desired temperature, unlike conventional systems that cycle on and off. This results in more precise temperature control, reduced energy consumption, and quieter operation.

Additionally, mini-splits offer zoning capabilities, allowing homeowners to control the temperature in individual rooms or zones independently. Each indoor unit has its thermostat, enabling personalized comfort while minimizing energy waste. This flexibility makes mini-splits an ideal solution for homes with varying heating and cooling needs in different areas.

Benefits of Ductless Mini-Split Systems

Energy Efficiency: Ductless mini-splits are renowned for their energy efficiency. Inverter technology and the absence of ductwork reduce energy waste, resulting in lower utility bills and a reduced environmental footprint.

Precise Temperature Control: Mini-splits offer precise temperature control in individual rooms or zones, eliminating the need to heat or cool unoccupied spaces.

Easy Installation: The absence of ductwork makes installation relatively simple and less invasive compared to traditional HVAC systems. This can save both time and money during installation.

Improved Indoor Air Quality: Ductless mini-splits typically feature advanced filtration systems that can remove allergens and pollutants, providing healthier indoor air.

Versatility: Mini-splits are suitable for various applications, including home additions, retrofitting existing homes, and providing climate control for areas with specific heating or cooling requirements.

Quiet Operation: The indoor units of mini-splits are quieter than traditional HVAC systems, making for a more peaceful living environment.

Longevity: With proper maintenance, mini-split systems can have a longer lifespan compared to traditional HVAC systems.

Why Ductless Mini-Splits Are Gaining Popularity

As homeowners become more energy-conscious and seek cost-effective solutions for their comfort needs, ductless mini-split systems are gaining popularity for several reasons:

Energy Savings: Ductless mini-splits can significantly reduce energy consumption, resulting in lower utility bills over time.

Home Renovations: Mini-splits are a popular choice for home renovations or additions, as they can be easily integrated into existing spaces without the need for extensive ductwork.

Zoning Flexibility: The ability to control temperatures in different zones appeals to homeowners who want personalized comfort and cost savings.

While ductless mini-split systems offer numerous advantages, they are not without their disadvantages.
Here are some of the disadvantages associated with these systems:
Initial Cost: Ductless mini-split systems tend to have a higher upfront cost compared to traditional HVAC systems, especially if you need multiple indoor units to cover various areas of your home. However, the energy savings over time can offset this initial investment.

Aesthetics: While the indoor units of mini-splits are relatively compact and inconspicuous, they are still visible in the rooms they serve. Some homeowners may find their appearance less appealing compared to traditional ducted systems, which are hidden from view.

Complex Installation: While installation is generally easier than retrofitting ductwork in an existing home, it still requires professional expertise. The placement of indoor units, refrigerant lines, and electrical wiring can be complex, and improper installation can lead to performance issues.

Regular Maintenance: Ductless mini-split systems require regular maintenance, including cleaning or replacing air filters, cleaning the indoor and outdoor units, and checking refrigerant levels. Neglecting maintenance can lead to reduced efficiency and system breakdowns.

Limited Heating Capacity in Extremely Cold Climates: In regions with extremely cold winters, some ductless mini-split systems may struggle to provide sufficient heating capacity. Supplemental heating may be necessary during the coldest months.

Compatibility Issues: Some older homes may require electrical upgrades to support the additional load of mini-split systems, which can add to the installation cost.

Limited Air Distribution: While mini-splits offer zoned heating and cooling, they may not provide the same level of even temperature distribution as ducted systems. Airflow can be concentrated near the indoor unit, leading to temperature variations in larger rooms.

Conclusion

Ductless mini-split systems represent a modern and efficient approach to home heating and cooling. With their energy-saving technology, precise temperature control, and versatility, they are becoming an increasingly popular choice for homeowners seeking comfort without the drawbacks of traditional HVAC systems. Whether you’re looking to retrofit your existing home, improve energy efficiency, or enhance comfort in specific areas, ductless mini-splits are a promising solution for the future of home comfort.
Your choice should be based on your specific needs, budget, and the climate in which you live. Consulting with a qualified HVAC professional can help you make an informed decision and ensure that the system is installed and maintained correctly.

Call us at (650) 575-3915 so we can help you figure out if a mini-split is the best solution for your home.

Tips for coping with a heat wave

You’ve probably heard that July 2019 was the warmest month ever recorded on the planet. What if you don’t have air conditioning in your home?

There are some tried-and-true techniques that you may already know about — taking a cold shower, going to an air-conditioned movie theatre, and installing ceiling fans. But there are some additional strategies you may never have thought of.

Turn off incandescent lights

Incandescent bulbs put out quite a bit of heat — in fact, more of the energy used by an incandescent bulb is converted to heat than is converted to light! This is smart even if you do have air conditioning, as it will reduce the work your air conditioner has to do.

Eat easy-to-digest foods

High-protein meals make your body work harder to digest them, thus increasing the heat created by your metabolism. Have a nice cool salad or soup such as gazpacho.

Freeze your sheets

It’s always harder to fall asleep when you’re too warm. An hour or two before bedtime, put your sheets in the freezer. They’ll get nice and chilly and make you feel much cooler when you climb into bed.

Stay hydrated

When the temperature gets hot, your body loses water. It is important to replenish it with plenty of fluids. Our bodies are about 60% water. We can live without food for 3-4 weeks, but we can go without water only for 3 days or so. Drinking cold liquids also helps cool the body.

Reduce alcohol and caffeine

While it may not do much in the way of giving you immediate relief from the heat, reducing your alcohol and caffeine consumption can be important for your health and well-being during a heat wave. Since alcohol and caffeine are both diuretics, consuming them can lead to dehydration, which can be dangerous when temperatures are high. Drink lots of cold/iced water instead.

Keep your AC running smoothly

With the hot weather and stay-in-place orders in San Mateo County, many households are installing A/C systems.

On hot days when your new AC runs constantly, there’s a chance its effectiveness could lower. Here are a few steps you can take to make sure your newly installed air conditioner works smoothly throughout the summer.

Replace your AC filter frequently

The job of an AC filter is to filter the debris and dust from the house and blow clean air into the house. When the AC filter gets dirty, it gets harder for the AC to blow air through it. This makes the air conditioner work harder and use more energy.

When the A/C filter stays dirty for a long time, the effectiveness of the AC is reduced and it will no longer cool the house as effectively. Change your filter once a month especially if you use the AC a lot.

Run fewer appliances

When the temperature rises outside, your AC has to work harder to keep your home comfortable.

Burners, ovens, dishwashers and dryers produce heat and increase the temperature inside the house. Try to avoid using these appliances on really hot days when you will likely run the AC for a long time.

Hot days might be a great time to spare your air conditioner by taking your cooking outside and barbecue!

Keep other heat-producing equipment such as computers and lamps away from the A/C thermostat. This may influence the A/C thermostat reading and cause the A/C to work harder than necessary.

Use fans to cool your home

A/C is not the only way to cool your home. Install floor and ceiling fans to circulate air. This cools the air and reduces the need to run your A/C. Run A/C less reduces your energy costs and extends the life of your new A/C.

Keep your vents clean

Vents are places where over time dust can collect and obstruct airflow. Every summer check your air conditioning vents to make sure that the air blows through these vents unobstructed.

Furniture and window treatments can also obstruct airflow from your air conditioner. Make sure that 6″ of space next to the vent is clear.

Update your air conditioner

Every appliance starts to degrade in its efficacy at some point or stops working altogether. Having an air conditioner working smoothly is important to keep your home comfortable. And when you feel it is time or when your HVAC contractor recommends it, replace your old air conditioner for a new energy-efficient one.

RC Mechanical Can Help

RC Mechanical, Redwood City’s best HVAC contractor, has installed and replaced many air conditioniong systems for Redwood City homeowners. Whether you need help selecting the right air conditioner, installing a furnace, or conducting a home energy audit, you can count on RC Mechanical for superior and cost-effective service. RC Mechanical is a local veteran-owned business and has provided expert furnace and air conditioning repair and installation to the Bay Area with integrity for over 20 years. Homeowners in Redwood City and throughout the Bay Area count on us for all their heating and air conditioning needs.

Call us today at (650) 575-3915 and we will respond within 24 hours.

Energy saving tips for winter

When the temperature goes down, the cost of operating your heating system goes up. Here are some ways you can lower the cost of keeping your home cozy.

Keep your furnace well-maintained

Regular maintenance to keep your furnace in good condition is important for both your furnace’s performance AND its energy efficiency. An additional benefit of good furnace maintenance is that it prolongs your heating system’s life.

The filter in your furnace is there to keep the air in your home clean. You should change the furnace filter at least every 6 months. This not only keeps the air in your home cleaner, but lowers your energy bill. This is because a dirty filter impedes air movement, causing the furnace to have to work harder and use more energy.

Don’t wait until the beginning of the cold season to call your furnace technician. Remember that everyone else will be wanting to get maintenance for their heating system at that same time!

Install a programmable thermostat

The easiest way to keep your home at a comfortable temperature is by installing a programmable thermostat with your furnace. You can program the thermostat to change temperatures throughout the course of 24 hours. Why run the furnace at night when everyone is under their covers, or during the workday when the house is empty? Instead, the furnace can be programmed to heat the house only when needed. Most thermostats also let you program different patterns for weekends versus weekdays.

Many people like to use a learning thermostat like Nest. Based on the way you adjust the thermostat during the day, it learns what temperatures you like at what times of day and programs itself to turn on your furnace accordingly.

Weatherstripping

Most of the heat loss in your house happens around windows and doors. There could be small gaps through which warm air can escape the house. These gaps can be closed with proper weatherstripping. Another way to address heat loss through your windows and doors is by installing insulating curtains and blinds.

If you have a fireplace, it can be another source of heat loss in your home. Warm air can rise through the chimney and draw in cold air from outside to replace it. Using weatherstripping around windows and doors helps to prevent this. In addition, you can install glass doors on the front of your fireplace to help keep your heated interior air from going up the chimney.

Add insulation to your walls and attic

Heat can be lost through walls and the attic. Since they make up most of the house’s structure, heat loss through them can be significant.

Installing insulation in your walls and attics can make a big difference. As an additional bonus, it will help keep your home cooler in the summer as well, reducing the energy consumption of your air conditioner.

Prevent heat loss from the water heater

Water in the water heater can lose its heat through its walls. And since water heaters are usually installed in an unheated garage, heat loss can be significant, especially during winter. This causes your water heater to use more energy to keep the water at the desired temperature. To help mitigate this, wrap the water heater in insulation.

You may also want to consider lowering the programmed temperature on your water heater. The average temperature setting for water heaters is 145 degrees. Lowering the temperature to 120 degrees could save you money, and you may find that 120 degrees is warm enough to meet your needs.

Check ducts for leaks

According the US Department of Energy, 20-40% of the air loss in most houses leaks through the ductwork.

If your utility bills are higher than average, then get your ductwork examined by a professional HVAC technician to see if you have leaky ductwork.

RC Mechanical, Redwood City’s best HVAC contractor, is a trusted local company that will quickly diagnose and resolve your furnace issues, and recommend repair or replacement. RC Mechanical is a local veteran-owned business and has provided expert furnace and air conditioning repair and installation to the Bay Area with integrity for over 20 years. Homeowners in Redwood City and throughout the Bay Area count on us for all their heating and air conditioning needs. Call us today at (650) 575-3915 and we will respond within 24 hours.

All about heat pumps

A conventional heating unit generates heat using gas and moves it into the house through the duct system to heat your home.

Heat pumps, on the other hand, simply move heat from one area into another. This makes them very efficient to heat and cool your home.

During the winter, heat pumps move the air from the outside, compresses it to increase the temperature of the air and then pushes this hot air into your home.

And in the summer, they move the heat from your home to the outside.

Because a heat pump simply moves the heat around, the same unit can be used to heat and cool a place.

You could either buy a low-end equipment that will cost to more to operate in the short run or go with a high-efficiency unit that has a low cost to operate.

If you do not have solar, then you will be using electricity to heat the home. This will certainly add to your existing electric bills. If you have solar panels, you can offset the cost of electricity to heat your home.

Heat pumps take 220v to the outdoor unit. Depending on your indoor unit (fan coil), they might need 200v also. This might necessitate you to upgrade your electrical panel.

When installing any kind of equipment, remember to pay attention to the duct work. If the duct work has leaks, then all the money you have spent on the heat pump is wasted and it will be heating the attic or some other place other than your home.

Heat pumps help with CO emissions and are clean especially when connected with solar panels.

If you don’t have a duct system installed in your home, you can get a mini-split heat pump. This is particularly useful when you want to control the temperature of each room separately.

Give us a call to find out if heat pump is the right solution for you.

Prepare your home for the fire season

Every year the fire season seems to start earlier and earlier. Fall is the fire season when hot weather, dry plant materials and gusty winds come together to create an atmosphere that is ripe for fire. During such burnings, the air fills with smoke and the sky takes on an apocalyptic hue. The smoke is filled with particulate matter that can get lodged deep in the lungs exacerbating asthma.

Your home is your refuge. We need to make sure that this smoke never gets into the house. Summer is the best time to prepare for the fire season. Take the following steps to keep smoky air out of your house:

Seal openings with caulk

Sealing openings is the simplest way to keep smoke out of your house. You can use weather stripping, sealant caulk or door sweeps. Weather stripping is a thick tape that seals the gaps around openings of the doors and windows. Sealant caulk fills the gaps created at the time of installation of the doors and windows. These fill the small gaps around the installed area.

Door sweeps seal out the drafts from outside the house. These are installed under the doors.

Get an air purifier

The job of an air purifier is to cleanse the air that is inside your home getting rid of germs, dander, smoke, dust, etc.

Air purifiers use electrostatic filters to attract germs so they can neutralize them. It is important to buy an air filter that doesn’t produce ozone as a by-product. They use filters to trap dander, smoke and dust.

Use HEPA filter

HEPA is an acronym for High Efficiency Particulate Air. This type of filter removes allergens, like dander, dust, mold, etc. using multi-layered netting that is made of very fine fiberglass threads. These can capture 99.97% of all air matter that are 0.3 microns and up. These filters require regular replacement. Follow the manufacturer’s guidelines.

Use an IQ Air filter

IQ Filter is a brand of filter that is one of the best air filters and hence deserves special attention. These filters can remove particles that are as fine as 0.003 microns with 99.5% efficiency. These air filters give the cleanest air possible. We installed it in one of our client’s homes. This client mentioned to us that one of their guests exclaimed that they could “taste the clean air” in the house after being in the house for a few minutes.

Upgrade your HVAC system

If your HVAC is an old system and it requires maintenance or repair often, then it is time to replace your complete HVAC system. Having an efficient system will not only improve your indoor air quality, you may also be sealing leaks in the duct system that push dirty air into the house.

Want to improve your indoor air quality during fire season? Give us a call at (650) 575-3915. At RC Mechanical, we specialize in improving your indoor air quality.. We’ll walk you through your various options.

Why does my air conditioner need maintenance?

Bay area peninsula can get really hot in the summer and fall. As the world gets warmer, the temperatures are getting higher earlier in the year.

The last thing you want is to have your AC not work on a hot day.

Regular maintenance work is key to keeping your investment (air conditioner) working at its peak. Here are a few reasons why doing maintenance on your AC is important.

Regular check-ups prevent breakdowns

Check-ups ensure that your AC is working well. During a check up, your technician would look inside the AC at the various coils, filters, etc. These parts could be broken, clogged, dirty or have simply stopped working. The technician would replace broken parts, clean dirty ones, and would ensure that AC now works like a well-oiled machine.

Yearly check-ups will prevent your AC from breaking down in the middle of summer when scheduling a technician can be hard.

Don’t take a chance with the AC breakdown

Air conditioner technicians are busy in the summer. The number of calls spikes during the summer for repairs and replacements of ACs. If your AC breaks down in the middle of summer, you may not be able to get a technician immediately. And a hot day without an AC can be miserable.

An ounce of prevention is better than a pound of cure. Get your AC serviced before summer so you have a well-functioning AC all summer long.

Lower your energy bill with check-ups

Any machine will work to its optimum when it has been serviced. Same is true of ACs.

Regular maintenance of your AC will keep all its parts working well. When the AC has been serviced, it uses less energy to run and you will see the result in lowered energy bills.

Increase the life of your AC

Just like an annual doctor visit can uncover potential problems before they become life-threatening, an AC check-up can identify small issues which can be fixed before they take down the whole AC.

Getting regular servicing on your AC helps increase its lifespan. Air conditioners are a big investment. Take care of the investment with regular check-ups. Here are a few articles that might help you with your air conditioner:

Things to leave to your HVAC professional
Why is my AC making noises
Why does AC installation cost so much?
Keep your AC running smoothly
Why is my air conditioner leaking condensation? Is it malfunctioning?

Get your AC serviced before the summer hits. Call us today at (650) 575-3915 to schedule an appointment.

Allergies & Asthma

While there may be many ways to treat asthma or allergies, one of the smartest actions you can take as a consumer is to alleviate the various conditions that can trigger the symptoms. Did you know that your HVAC system is part of this ecosystem? By increasing the effectiveness of your HVAC system, you can optimize its efficiency to help reduce allergens that trigger asthma and allergies.

Replace your air filters

One of the promises of an effective HVAC system is to provide clean indoor air. This is done by trapping airborne allergens in your HVAC system’s air filters. Even trapped, these allergens can still lead to allergic reactions or asthma attacks. To address these trapped allergens as well as mildew and mold, it is suggested that you schedule a yearly maintenance for you HVAC system.

Your annual maintenance should start with your air filter since it plays a central role in trapping allergens. Air filter efficiency is measured by the particles it can trap and thus prevent from circulating through your house. The more effective your air filter is, the more particles it reduces in your homes air flow. But that comes at a cost – not just financially. The more effective your filter is, the more stress it places on your HVAC system. It is suggested that you work with your HVAC technician to select the right filter for your system.

Install air purifier

Air purifiers can also help in trapping allergens. They work with your air filter to aid in purifying the air stream to your home by trapping allergens not caught by the air filter alone. You may want to consider a whole-home air purifier that is compatible with your air filter and HVAC system.

Use humidifiers

Using filter and purification technology goes a long way in helping to provide clean air throughout your home. But it is not the only way to address asthma and allergy symptoms. Humidity can also affect asthma and allergy sufferers. Once again, your HVAC system can address this trigger by providing a whole-home dehumidifiers. Dehumidifying technology can address the humidity levels to help create a safe and healthy environment.

Clean the air with UV lamps

UV lamps when used with your HVAC system can sterilize and clean the air before it reaches your living space. They do this by zapping mold, bacteria, and other allergens. UV lamps also prevent fungus from growing in damp areas, such as the AC coil. This technology may be expensive but for households experiencing poor indoor air quality, it may be a viable solution.

Our main goal at RC Mechanical is to help keep your home comfortable throughout the year and free of allergens for you. Call us at (650) 575-3915 and let us help you with your home comfort issues.