The Effects of Excess Humidity in the Human Body

Although humidity is a key factor of indoor air quality, it can be easy to take it for granted. It’s important to understand, however, that it has a direct impact on your comfort and well-being. Experts agree that the optimal humidity level is between 35 to 60 percent, and exceeding this range can pose health problems.

Preserving Michelangelo’s Frescoes With the Carrier® HVAC System

When it comes to heating and air conditioning systems, Carrier® is the brand you can depend on. It has a proven record in providing sustainable and energy-efficient products, and this can be easily seen through its client reviews. In fact, it played a key role in preserving one of the most iconic masterpieces in the history: Michelangelo’s frescoes in the Sistine Chapel. Here’s how:

Why Air Conditioners Are Phasing Out R-22

It’s a well-known fact that refrigerant leaks are harmful to the environment, particularly the HCFC R-22. That’s why it’s important for homeowners to keep stock of the condition of their HVAC systems through regular maintenance checkups and service. Read more

The Heat Exchanger: Operation and Maintenance

Furnace heaters are made up of various components. However, the heat exchanger is perhaps the most crucial for without it, you won’t have heat. Here’s a close look at how the heat exchanger works and what you can do to maintain it.

Questions to Ask Before Getting an Air Conditioning System

Purchasing and installing an air conditioning system is a significant investment, so it’s best to research and prepare before choosing. You have to consider several factors before making your decision, though, such as energy efficiency ratings and your home’s design. Fortunately, we can provide you with detailed and specific advice in our initial consultation. Read more

Why Is My Air Conditioner Not Cooling?

Have you noticed that your home’s air conditioning system doesn’t feel as if it is cooling properly, or maybe even blowing warm air? This is one of the most commonly asked questions among Orange County residents when they are having home cooling issues.

If you’re wondering what could be the cause of this annoying disturbance in your home comfort, then we can help. Read on to learn the causes and solutions to this fairly common problem. We’ll help you troubleshoot this annoying problem.

First, decide what type of problem you’re actually experiencing with your A/C:

Air Is Blowing Out of the Vents, But It Is Warm Air

This is a very common issue that people notice. Here are some great steps to follow if your A/C is functioning, but the air is not coming out cold.

Examine Your Air Filter

Have you been checking and changing or cleaning your air filter regularly? If not, then you could have a very dirty air filter. A dirty filter can block the airflow to your system’s air handler, causing the air that is coming out of your home’s vents to blow out warmer and weaker. If it’s been a long time since you’ve changed your air filter, then do so immediately and see if that alleviates your issue. If it’s been a really long time since you’ve changed your filter, change it. Then, call in an HVAC tech to check out your system for any potential damage not changing the filter could have caused.

Check Your Thermostat

This may seem silly to have to mention, but occasionally the cause of your A/C blowing warm air is that sometimes the fan is set to “auto” or “fan”, which causes your system to continuously circulate air throughout your home, even if the cooling unit isn’t running. This can happen for a variety of reasons, oftentimes it is just accidentally switched on. Check this out to make sure it’s not just an incorrect setting on your thermostat causing warm air to come out of your vents.

Examine Your Outdoor Unit

If you’ve been paying decent attention to your home’s indoor A/C unit, but don’t really pay much mind to your outdoor unit, then do so now. If the unit is covered in weeds, leaves, grass or other debris, it can inhibit how effectively it will cool your home. Clear any debris from your outdoor unit and keep it free from outdoor buildup.

It Could Be a Refrigerant Leak

If none of the above solutions fix your A/C, then it could be a refrigerant leak. Unlike gas in your car, your A/C doesn’t “use up” refrigerant. So, if your air conditioner is low on refrigerant liquid, that means that there is a leak in your unit, and you will need to call in a professional HVAC technician to fix this problem.

If Your A/C Isn’t Blowing ANY Air

If your air conditioner simply isn’t blowing any air at all, then it’s a good time to call in a professional to help assess the problem. It could be electrical or a failure in the system itself. Oftentimes an A/C will shut down to prevent bigger problems, such as overheating or water damage to your home.

If you’re in need of service to your air conditioner, give us a call. At McMaster, we pride ourselves on excellent service all around, making us one of the top HVAC providers of Orange County. McMaster is a licensed and insured contractor and a Carrier Factory Authorized Dealer. Call us today at 949-441-5611.


Adding Air Conditioning To A Boiler

Boiler systems are used to heat the home during cold winter months while air conditioning systems are used in the summertime to keep the indoor space cool. The two are not interchangeable. For this reason most people get confused when the discussion about how they are used turns to integrating the two systems. Adding Air Conditioning To A Boiler is possible.

It makes little sense trying to operate a heating system in a manner for which it was not designed, but that in no way prevents both systems from being installed alongside one another. Therefore, it is possible to increase the comfort of a home by adding air conditioning.

Three options are available when it’s time to add new or replace an air conditioning system in a home with a boiler heating system. To begin with, a mini-split AC system can be installed with an air handler and condenser installed outside the home and in the wall. These are designed to cool specific portions of the building and is an affordable option, often starting at $3,500.

Second is an AC system in which the condenser is installed on the outside of the home and the air handler in the attic. Cooled air is distributed throughout the home or to specific rooms by way of air ducts. This system can also be used to heat the home if desired and comes at a higher price. Homeowners can expect to pay from $8,000 to $15,000 for these units.

Next is an attic air system, also called high velocity. The difference between this system and the attic air system is primarily in the ductwork. The high velocity system uses smaller, round tubing instead of rigid ducts. Noise levels on this system are lower while delivering better cooling. It is also more aesthetically appealing at a cost of $12,000 to $20,000.

We love keeping you informed on the latest in air conditioning and heating systems and letting you know what you can do to improve the comfort of your home. Follow us for more great articles on heating air conditioning and home needs. You can depend on us to keep you updated on all the latest news in our industry.

Hiring NATE Certified Technicians For Your Air Conditioner Repairs

Air conditioners have the crucial function of keeping your house cool over the summer. When the seasons change, maintaining a reasonably constant temperature in your house is necessary to protect your house and remain comfortable. This is because sudden shifts in humidity levels and temperature can make wooden cabinets, furniture and hardwood floors develop gaps and contract and expand.

You should do routine AC maintenance to keep your unit running smoothly. However, with regards to difficult AC system breakdowns, you can not rely on just any repair firm or repair technician to come to your house. You will need to hire a good professional, who can fix your air conditioning and heating system and keep it working optimally over the long term, for an affordable price.


Finding the Right AC Repair Technician

Inquire about the technician’s certifications and training. There are a range of different qualifications an air conditioning repair expert can have, after completing their training. For instance, ask your prospective firm whether they use NATE certified technicians to service your air conditioner.

Ensure that the engineer repairing your air conditioner has a license, insurance and state registration. You will not want someone who is unlicensed and inexperienced coming to your home to carry out work. Also, inquire whether the engineer has worked with the air conditioner brand you own. Not every air conditioner brand is identical and not all companies work with all air conditioner brands.

Find out whether the technician scheduled to work in your home has been through any kind of pre employment screening background check. As you are putting your trust in this person to work in your house, you will need to ensure that they are trustworthy and not likely to cause you any harm. Also, it is useful if the technician is in uniform, so you can be sure that he/she works for the firm you contacted.

Always obtain a written quote and check that a guarantee is provided. The quote should be given to you prior to the commencement of the work. This way, you will know in advance precisely what you are going to be charged. The guarantee will prove that the technician and firm has confidence in the quality of work being done. Take all of these elements into account before hiring someone to fix your air conditioner, and you can be sure that you will get the best possible standard of service.

The Benefits Of Quality Air-conditioning

When you are looking for ways to improve on the comfort levels of your home, good quality heating and cooling systems will naturally come to mind. has been around for a while now and has a range of systems for you to look through. You can be sure of finding something to suit your needs and your budget.


As with any good investment plan, the first thing you are bound to ask as a customer is what are the advantages to having Carrier Heating and Cooling systems or any other for that matter. Here are some points to consider:

Increasing the comfort level in your home: The weather in America can swing violently from very hot to very cold. Being able to balance out temperatures within your home is a simple process that will allow you to deal with the changing seasons. In fact, these systems are advanced enough to allow you to set temperatures at a default that you will be most comfortable with.

Investing in a unit like Carrier indoor air quality systems will ensure that the electricity bills you get at the end of the month will not leave you gasping for breath. The more ecofriendly a unit is, the quicker it will pay for itself in terms of savings on your utility bill.

Doing your bit for the environment: With a unit that comes with a good energy star rating, you will not only save on bills but also do your part for the environment. The impact of your comfort will not be as severe on the environment as such machines usually are.

Improve your lifestyle in your home: Traditional cooling units were loud, took up space and were generally be obstructive. With units such as McMaster Air Conditioning, you will have a unit that functions silently and unobtrusively almost making you forget that it’s there.

Good quality of air: Considering the quality of air we breathe in these days, having a unit that will give you quality air that is not recycled or treated can be a good thing for you and the family.

These are just some of the advantages you can enjoy with good home cooling and heating systems. Choosing an optimum quality cooling and heating system for your home will ensure you comfort without draining your financial resources, and this is a quality everyone looks for in a product they purchase for their homes.

The Importance of A/C Repair & Maintenance

The Importance of Proper A/C Care

Numerous problems can crop up with any large appliance, and an air conditioning system certainly is no exception. When faced with Southern California heat, you will absolutely want your air conditioning system to be working properly, so you don’t have to be chasing down an A/C repairman while you struggle through the sweltering temperatures at home.

Although it is likely that you will need to fix some issues that occur with your air conditioner on your own, such as changing a dirty air filter, there are many reasons why you would want to hire an air conditioning repair expert. Since A/C systems are quite complex, it is best not to have to do major repairs (which require opening the appliance) on your own for safety reasons as well as the protection of your air conditioner. When an air conditioner malfunctions, it will probably begin to lose its ability to properly cool your home. This also results in a higher energy bills and a good deal of discomfort, particularly for those of us residing in Southern California. Read on to find out why air conditioning maintenance and repair is important.

Why You Should Only Hired a Quality Professional Technician

It is advisable to find a trained and qualified air conditioning contractor to undertake your A/C repair work. Trying to repair a system on your own may lead to further complications, resulting in higher costs to cover even more repairs from the damage caused. If you have a good understanding of problems your A/C might develop, it is easier to determine the kind of repairs or services the unit requires.

If you live in Orange County and want to ensure that you stay cool this summer, then it’s a good idea to locate a reliable company that can undertake air conditioning repair, such as McMaster. Seek out a company that has an excellent reputation and is also licensed to operate in California.  

Air conditioning systems are generally very reliable and are built to last for quite a long time. However, they will still require regular maintenance and occasional repairs.

Understand the Scope of Your Problem

Before calling a technician for your A/C repair, you can try to determine what the problem with the unit is, so that you have an idea upfront what types of repairs you may be facing.

  • An A/C unit that’s too noisy probably most likely a problem with the maintenance belts or the ductwork of the home especially if it is not sealed correctly. Knowing where the noise is coming from can help determine the problem.  
  • When you notice water forming all over the air conditioning unit, the issue might be with the drainage system of the unit. Either the condenser’s drain lines could be obstructed or the drain pipe might not be functioning properly. You should be able to easily unblock the line on your own, but if this does not work call in a professional to help.
  • Sometimes the air conditioning might not produce sufficient cool air. This generally means that the refrigerant must be filled, which can only be done by a professional.

For Top Quality Service, Call McMaster

When your air conditioner fails, it is advisable to get in touch with an HVAC professional. Generally, good care and maintenance of an air conditioning unit will give it a long lasting life. However, when there is a problem, consulting a professional air conditioning expert is the best course of action. If you’re in need of air conditioning repair, or simply an accurate diagnose of the problem and a reasonable quote, give us a call today. We have been Orange County’s top value in HVAC service for over 20 years. We are proud to be a full-service HVAC system contractor offering the very best value in A/C repair, maintenance and installation. Since we believe in a whole-home approach, our services will guarantee to provide your home with the very best in comfort and help you save money on your energy bills.

Call us today at 949-441-5611