Do I need to clean my ducts?

If the ductwork has no leaks, you never need to clean your ducts!

Our top priority is your health and safety. That’s why we’re taking extra care in reducing risk to you and your family through these safety procedures.

Spring cleaning often includes a deep clean of your home. Sweep out the gutters. Check for leaks and water damage. How about cleaning your air conditioning and furnace ducts? Surely getting your ducts spic and span will promote healthier indoor air, right? Not so fast.

The US Environmental Protection Agency recommends getting your air ducts cleaned only in special situations:

If there is mold growth inside ducts
If the insulation in your air ducts get wet or moldy
If ducts are infested with rodents or insects
If ducts are clogged with excessive amounts of dust and debris

What should you do instead? First, diagnose the problem properly.

At RC Mechanical, we focus on fixing the root problem with your A/C or furnace, not just the symptoms. We address the underlying causes of A/C and furnace issues. Otherwise the problem will recur and cost you more money. You may end up installing a new A/C or furnace unnecessarily. And addressing the underlying problems starts with a thorough inspection.

Schedule an HVAC Assessment

Getting a thorough assessment of your furnace and air conditioner will determine if you need your ducts cleaned or replaced. If there is excess debris in your ducts, chances are this is caused by a leak in your HVAC ductwork. We will conduct a thorough inspection of your furnace and air conditioner to identify the root problem before recommending the best solution for your situation.

If the ductwork has no leaks, you never need to clean your ducts! Cleaning them will unnecessarily blow dust particles into your home.

The EPA also recommends preventing water and dirt from entering the A/C or furnace system as the first priority. It is more important to look for leaks than for dust in your ductwork system. A leaking ductwork forces your air conditioner or heating system to overwork which can lead to higher energy bills.

A well-maintained A/C or furnace ductwork system traps indoor allergens in the air filters. This reduces allergens by trapping particles and preventing them from circulating through your home.

If Your Ducts Do Need Cleaning or Replacing

If an HVAC inspection uncovers mold, rodents, or excessive amounts of dust in your ductwork, this could require cleaning or replacing your ducts.

When hiring an HVAC contractor, ask that they provide you with before-and-after photos of the ducts so that you have assurance that the ductwork does have a problem(s) and that the problems have been fixed.

Ensure that the HVAC contractor cleans ALL components of the heating system or air conditioner, not just the ducts. Failure to clean one component can contaminate your entire air conditioner or heating system. This would erase any benefit your HVAC system received from the duct cleaning.

RC Mechanical Is Your Trusted HVAC Contractor

For over 20 years, RC Mechanical has been a trusted HVAC contractor for homeowners on the Peninsula and throughout the Bay Area who rely on us to deliver high-quality service. We’re taking these extra precautions to protect the health and safety of our customers and employees.

RC Mechanical, Redwood City’s best HVAC contractor, is a trusted local company that will quickly diagnose and resolve your indoor comfort and air quality issues. Whether you need help selecting a new air conditioner, installing a furnace, or conducting a home energy audit, you can count on RC Mechanical for superior and cost-effective HVAC 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.

Keeping Warm at Night

The San Francisco Bay Area enjoys mild winters. However, in the first weeks of this month, temperatures plummeted to the 30s for cities along the Bay like Redwood City, San Carlos, and Burlingame.

Are you and your kids not sleeping well because everyone is cold? Here’s what to do to make sure your house is comfortable:

Check for leaky ducts

When rooms don’t stay warm, there may be leaks in your furnace ducts. This causes your furnace to work harder and take longer to get to the desired temperature.
If some rooms stay warm but other rooms feel cold, then you may have a furnace air flow problem. We can correct this by adjusting the furnace air that blows into each room. We do this through automatic zoning so you are warm and cozy wherever you are in your home.

Change your furnace filter

Dust and dirt prevent free air flow through the heating system. This could make the furnace’s heat exchange overheat and turn itself off.

Check the time on your thermostat

Did you adjust the thermostat for daylight savings time? Set your furnace thermostat to “On” instead of “Auto.”

Do you have the right size furnace for your home?

Our experts can determine the right size of furnace is most appropriate for the size of your home and the Bay Area climate. An overpowered furnace drives up heating bills, while an underpowered furnace struggles to keep you warm on cold days. We can help you evaluate whether it is time to replace your existing furnace and install a new heating system.

Get an inspection for your heating system

Your HVAC system is like your car and needs regular checkups and maintenance. Maintenance can lengthen the life of your furnace.

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.

Our safety procedures during COVID-19

RC Mechanical appreciates the trust you place in us when you allow us into your home. Our highest priority is your health and safety. Given the current public health situation in Redwood City and the rest of San Mateo County, we want to make you aware of the safety procedures we have implemented.

When visiting your home to install, replace, or repair your air conditioner or furnace, we take the following precautions:

– Wearing full-mask respirator, gloves, and shoe covers
– We don’t come inside your house unless absolutely necessary
– We try not to touch anything in the house unless absolutely necessary
– We clean everything we touch
– While we are always pleased to see you, we won’t be shaking your hand at this time
– We ask that you open all needed doors and turn on necessary lights for us
– We will maintain a minimum 6-feet distance
– If we experience any symptoms of illness, we will stay home and self-quarantine

We are grateful for the opportunity to help with your heating, cooling, and air quality issues, and to help keep you safe and comfortable. If you have any questions, please call us at 650-575-3915.

6 ways to prepare your home for summer

Before you know it, the summer heat will be upon us. With a little bit of preparation, your home will be ready to keep you comfortable through the dog days of summer.

Turn your AC on early

Turning on your AC will allow you to find out if it is in working condition. If you hear the equipment cranking up, then it is working. Then go to each register in the house to make sure that cold air starts getting blown in within 5 minutes. If not, then there is a problem. Call your AC technician to schedule an appointment.

Change the filter

Filters clean the air of some impurities before that air is forced into the home. A cleaner filter means that the HVAC (Heating, Ventilation, Air Conditioner) will be able to move the air through the filter effortlessly. This leads to not only cleaner air, but also more energy efficiency leading to lower utility bills. A dirty filter, on the other hand, will make the HVAC work harder to push air through the filter leading to a higher utility bill and a stressed HVAC system.

Change the filter in the spring to help your AC running smoothly throughout the summer and check the air filter every month. If it is dirty, replace it.

Keep area around AC clean

AC works by pulling in air from its surroundings, cooling the air, and then forcing the air into the house through the ducts and vents. If the AC is installed outside the house, there should be at least 2 feet of clearance around the equipment. Make sure that there are no plants growing within 2 feet of the AC and clear out any yard debris from around the equipment to ensure proper air flow.

Do a visual inspection of the equipment, and if any coils look like they are frayed, then it is in need of repair. You may need to call your HVAC technician for help.

Close your windows

Curtains, blinds, and drapes are not only for aesthetics, but also serve a purpose. They block the harsh sun that can otherwise damage wood floor and furniture over time. They also help keep the house cooler by blocking the sun. A cooler house means that the HVAC has to do less work to keep the home comfortable, leading to a lower utility bill.

Clear and clean the registers

Make sure nothing is blocking the registers, such as furniture, drapes, and other items. Keeping the register area clear would enable the air to be better distributed in the room.

Over time, register grills can accumulate dust and grime. When the air is forced into the house, these get blown everywhere, which can affect people suffering from asthma and other respiratory ailments. Be sure to keep these grates clean with soap and water.

Schedule an HVAC tune-up

It is a good idea at the beginning of the season to get an HVAC technician to inspect your equipment to make sure there are no leaks or other damages. The technician should also be able to inspect your ductwork for proper alignment and to make sure that it is fully sealed.

Call us today at (650) 575-3915 to make an appointment. We’ll keep you cool and comfortable through the summer.

How to tell if you have leaky ductwork

Ducts are a vital part of your HVAC system. They distribute the air from your furnace or AC to different parts of your house.

However, when air is lost through gaps in the ductwork, your HVAC has to work harder to achieve the desired temperature in the house. Even if you have a super energy-efficient AC or heating unit, leaky ductwork will mean you won’t see the savings in your utility bills.

Here are a few signs to watch out for:

Rooms are hard to heat or cool

When there are leaks in your ducts, the heated or cooled air is lost through the gaps in the ducts. This causes the HVAC to work harder, and take longer, to get your room to the desired temperature.

It is unusually dusty in the house

When there is a hole in the ductwork, the air from the the surrounding area (attic, garage, or the outside) can get sucked into the ducts. Then this air gets pushed into the house. You don’t want this because air from garages and attics is generally much less clean than the air in the house.

If you notice that you are vacuuming more often and the house still stays dusty, then you may want to check for leaky ductwork.

Your utility bills are higher than they should be

When you have leaky ductwork, conditioned air that was meant for the house escapes, so your HVAC has to work harder to keep the home at a comfortable temperature. Overworking your HVAC wastes both energy and money.

You notice a weird smell

A leaky duct will draw air from the surrounding areas. If this air is from a place like an attic or garage, then the contaminated air gets pushed into your house. For example, if you have a leaky duct in your garage, you might notice the smell of auto exhaust. If you notice strange smells, have your ductwork checked.

Animal sounds from the ductwork

When there is a leak in the duct, small animals that could gather near the leak for some comfortable air. Over time, as the holes in the duct get bigger, animals can get into the ductwork. You might hear animals scampering in the ducts, or their droppings in the ductwork could create a weird smell in the house.

If you suspect a ductwork problem, we advise you to contact an HVAC professional. We at RC Mechanical can do a home analysis to find issues with your HVAC system. Call us today at (650) 575-3915 with any questions.

4 ways to improve your home air quality

Good air quality inside your home is important to your family’s well being and comfort. Bad air quality can adversely affect you and your family’s health. The effects can range from sneezing to chronic asthma or worse, especially if a family member has compromised health.

These are the four devices that have the biggest impact on your indoor air quality, and you should make sure that they are working at their optimal capacity.

Air filters

Air filters are your first level of defense against bad air quality. A high pollen season (spring) or outdoor air pollution (fire season) can put a lot of stress on these devices.

It may be necessary to change these often, as extended use can put a lot of wear and tear to these instruments. If you are looking to buy a new air filter, be sure to visit https://rcmechanicalinc.com/choosing-the-right-filter/ for advice on how to choose the right air filter for your needs.

Air purifier

If a regular filter isn’t enough for you, then you should look into an air purifier. Air purifiers differ from air filters in that they actively cleanse the air through ionization, whereas an air filter simply catches dust and other contaminants that go through it. This makes air purifiers better at removing pollutants such as bacteria, pollen, pet dander, dust mites, spores, and viruses than the standard air filter.

IQAir purifier is the industry gold-standard for air purifiers. The IQ hyper-HEPA filter produces hospital grade air. Both are gold-standards in the air purifier industry and produce hospital-grade air. When one was installed in a client’s home, they said that they could “taste the clean air”!

Humidifier

During California summers, the air can get very dry. Chronic dry skin, chapped lips, and getting static shocks often can be a sign of low humidity, meaning that the water vapor in the air is at lower than normal levels. Breathing dry air over a long period of time can lead to respiratory issues.

Your health is not the only thing that can suffer from not installing a humidifier. When a home is excessively dry, paintings, wallpaper, and furniture can all suffer permanent damage.

Installing a whole-home humidifier can prevent all of these issues. In combination with your HVAC, your home will maintain an optimal level of humidity throughout the seasons.

Carbon monoxide detector

One of the most dangerous pollutants is carbon monoxide (CO). It is a colorless, odorless, invisible, and tasteless gas, but if CO leaks into your home, you may suffer from symptoms ranging from headaches and dizziness to a loss of consciousness.

It is vital for every house to have a working CO detector. These devices are available in hardware stores and are easy to install. For them to maintain their effectiveness, remember to change the battery every year.

We at RC Mechanical, take pride in diagnosing and improving our clients’ indoor air quality. If you have any questions or concerns, or are looking for more information, contact us today at (650) 575-3915.

Choosing the right filter

Air filters are an important, but often overlooked, part of the HVAC system. The primary purpose of a furnace or a/c filter is to trap and remove dust, dirt, hair, fur, fibers, bacteria, pollen, mold, etc. from the air in your house, and to protect the HVAC system. Without a filter, these impurities will compromise the efficiency and longevity of your heating and air conditioning equipment.

Furnace and A/C filters vary considerably in quality. The MERV rating is used to measure the ability of the filter to remove pollutants from the air. The higher the MERV rating, the better job the filter does in cleaning the air. Furnace and air conditioning filters are available at various price levels. It is usually true that the higher the cost of a filter, the better for your indoor air quality and your HVAC system.

Let’s now look at the different levels of filters in terms of price and their effectiveness.

$1.50 filter (MERV 1-4)

This essentially protects your small child or animal from being sucked into the furnace! Jokes aside, there isn’t much else that this furnace and air conditioning filter does.

These are usually flat filters with less surface area with which to clean the air. They also need to be changed more frequently than higher-quality filters.

$3 filter (MERV 5-8)

HVAC filters at this level provide basic filtration for your heating or air conditioning system. They can trap dander, pet hair, and mold to help keep the air free of these highly allergenic particles.

$15 – $20 filter (MERV 9-12)

At this MERV rating, filters are able to trap dust particles and are perfect for homes where there are people with allergies, asthma, and other respiratory conditions.

Such filters are generally pleated. Pleats give more surface area for the air to move through and get cleaned.

These are the best filters for your money. They keep the air clean, protect the HVAC system, and don’t need system modifications for their installation.

$45 filter

At this price range, you can get electrostatic filters. These furnace and air conditioner filters use static electricity to clean the air.

An electrostatic filter is made of multiple layers of mesh or vented metal. These are washable filters. In essence, you don’t have to replace them at all. Simply wash them clean and reuse. The downside to such a filter is that it restricts the flow of air.

These aren’t the best filters for homes because they can damage your equipment. The price of this filter is high because you don’t have to replace filters.

Such a filter is best for a home where the only concern is to protect the HVAC equipment and nothing else.

IQ Air filter (MERV 16)

This is the Rolls Royce of filters!

These are outstanding filters. If you want the air inside your home to be as clean as possible, this is the filter you want for your furnace and air conditioner.

Before we install the filter, we use a particle scanner to measure the quality of the air. After installation, we test the air again. The change is generally dramatic!

When we installed the IQ filter in the home of one of our Redwood City clients, they said that they could actually “taste the clean air”!

For these filters to be efficient, the furnace or air conditioning fan has to run continuously. The IQ filter will last 3 years or 18 months with a fan running continuously.

They cost between $350 and $400 for a set of 4 filters and cost between $2600-$3200 to install. We said it was the Rolls Royce of filters, didn’t we?

Have questions about filters, furnaces, ducts or air conditioners? Call Redwood City’s best HVAC contractor. RC Mechanical is an owner-operated Redwood City business and has provided expert furnace and air conditioning repair and installation to the Bay Area with integrity for over 20 years. Call us today at (650) 575-3915. Homeowners in Redwood City and throughout the Bay Area count on us for all their heating and air conditioning needs.

Should I repair or replace my HVAC system?

An HVAC system includes a furnace and/or air conditioner and the duct system to carry the air around the house.

In general, the lifespan of an HVAC system is between 15 and 20 years.

The lifespan of a furnace or air conditioer depends on how often the HVAC system was used, the quality of the mechanical components (furnace and AC), the quality of the furnace or a/c/ installation and the maintenance of the whole system over the years.

Here are a few considerations before you decide to replace your furnace or air conditioner.

Age of the system

HVAC systems last for up to 15 years. If the heating or cooling system stops working or the repair is going to cost a lot of money, then it is time to replace the furnace or air conditioning unit.

Safety

Old furnaces can get cracks in their heat exchangers. This enables carbon monoxide, a deadly gas that is colorless and odorless, to leak into the house. It is important to have a carbon monoxide detector to tell if your furnace has a leak.

Older HVAC systems could have compromised electrical issues. If fuses short or connections get weak, at the minimum your heating or cooling system will come to a halt. It can also cause fire.

Such safety issues are best mitigated by replacing the whole furnace or air conditioner.

Breakdown

An HVAC system that is over 12 years old will need to be replaced if there is a major breakdown. The cost of repairing a furnace or air conditioner can approach the cost of replacing it.

If the HVAC system is a fairly new one, but one of the major components needs to be repaired, then you will have to determine if the cost of fixing it approaches replacing the whole system. If yes, then you are better off getting a whole new HVAC system.

Degrading comfort level

There are 2 primary reasons for why your HVAC system is not keeping your home comfortable for you.

The first reason is that you have a wrong size of HVAC system installed in your home.

If the HVAC system is big for the home, the system is able to get your house to a comfortable temperature fast. This makes for a heating or cooling system that is turning on and off frequently leading to a stress on the system. If an AC doesn’t run for a certain length of time, it doesn’t dehumidify properly which is one of its core purposes. This also wastes energy and money.

If there is a leak in the ductwork of the furnace or air conditioner, you might sense a smell that is either putrid or not familiar. Leaky furnace or air conditioning ducts might also cause a decreased level of comfort in your home.

Increase in utility bills

An air conditioning or heating system that is steadily increasing your utility bills is indicating to you that it needs to be replaced.

An increase in bills means that the HVAC system is working harder and or longer to keep you comfortable in your home.

At RC Mechanical, Redwood City’s best HVAC contractor, our expertise is in designing an HVAC system for you that is best for your home and that lasts for over a decade. Call us if you are having issues with your furnace or air conditioner and believe that it may need to be repaired or serviced. RC Mechanical is a local owner-operated Redwood City business and has provided expert furnace and air conditioning repair and installation to the Bay Area with integrity for over 20 years. Call us today at (650) 575-3915. Homeowners in Redwood City and throughout the Bay Area count on RC Mechanical for all their heating and air conditioning needs.

Why is my furnace leaking water?

Your furnace heats your house using either gas or electricity. It doesn’t use water at all. So, if your furnace starts leaking water, the natural questions are, “Where is the water coming from?” and “Why is my furnace leaking water?”.

There are a few reasons why your furnace could be leaking water.

Leaky condensation

Condensation is a problem generally with energy-efficient furnaces. Older furnaces do not produce condensation. Thus the older furnaces don’t have the leaky water problem.

Energy-efficient furnaces have 2 heat exchangers. These heat exchangers keep the warm gases inside the furnace for a while. This in turn makes the furnace gases cool and condense. There are flue pipes in the furnace whose job is to route this water away from the furnace.

When a furnace’s flue pipe is a wrong size, is improperly installed, or is clogged, water can pool around the furnace. If there is a break in the furnace flue pipe, the water escapes.

Clogged drain

Your furnace shares the internal drain system with the air conditioner. If there is a clog somewhere in the furnace flue pipe, the water could be getting redirected into the furnace. This could make the furnace leak water.

Leaky humidifier or air conditioner

The job of the humidifier is to keep the humidity inside the house at a comfortable level. If the humidifier has a leak or is clogged, the water could drain into the furnace and spring a leak. This could lead you to believe that the furnace is leaking when in fact, it is the humidifier.

The only way to fix this problem is to call a reliable Bay Area HVAC contractor. If you’re located in Redwood City or nearby, call Sal at RC Mechanical at (650) 575-3915.

A malfunctioning furnace heat exchanger is another reason that your furnace could be leaking water. This is a complicated heating system issue and you should call your local Redwood City HVAC technician to deal with the problem.

RC Mechanical, Redwood City’s best HVAC contractor, is a trusted local company that will quickly diagnose and resolve your furnace and air conditioning issues. RC Mechanical is a local owner-operated Redwood City 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.

5 furnace checks to do before the winter

When the furnace doesn’t turn on on that first cool fall day, you may worry what it might cost, and how long you will have to live without a furnace.

There are a few things you can do to take care of small HVAC heating system issues. This blog post will show you how to diagnose and fix the most common simple issues with your furnace.

1. Check your thermostat

Some programmable thermostats can be complicated to program. Here are the most common things to check in a thermostat:

- First make sure that your thermostat is turned on for furnace. Thermostat should be set to “Heat”. Without this setting, the furnace won’t start.
- The temperature setting on the furnace’s thermostat should be higher than the temperature inside the house. E.g., if your room temperature is 65 degrees and your thermostat is set to 60 degrees, the furnace won’t kick in. The furnace setting should be at least 5 degrees over the room temperature for the furnace to start
- Check the time on the thermostat. If it isn’t displaying the correct time, fix it.
- Make sure that the furnace’s thermostat wires are not cut, frayed, loose, or otherwise compromised all the way to the furnace.
- Set or turn the furnace fan to “On” or “Auto”.

While you are checking the furnace, don’t forget to replace the battery. Without this, your thermostat settings will be lost if the power goes out even for a second.

2. Switches

Make sure the furnace’s power switch is turned on. Without this, your furnace can’t get the electricity and won’t start.

3. Breakers

First, turn off the furnace switch in the electrical panel. Now check the fuse in the power switch. If the fuse is blown, replace it.

If you don’t know how to replace it, it is time to call your furnace repair technician for inspection and repair.

4. Pilot light/electronic ignition

If you have a gas furnace, then check its pilot light. If it is not on, then depending on how handy you are, you may either call your furnace technician to light it or light it yourself.

If you have an igniter instead of a pilot light, make sure that you hear a clicking sound when the furnace is supposed to turn on. If not, you have a problem with the igniter. Call RC Mechanical, Redwood City’s best HVAC contractor, to quickly diagnose and resolve your furnace, thermostat, and air conditioning issues.

5. Change furnace filters

A clogged furnace filter can turn the furnace off. Dust and dirt don’t allow the air to move freely. This could make the furnace’s heat exchanger overheat and shut off.

Still stumped?

At the end of checking all these checks, if your furnace still doesn’t turn on, then call your local Redwood City HVAC technician for an inspection and possible repair.