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What is HVAC?

HVAC is short for Heating, Ventilation, and Air Conditioning. HVAC is mostly used to depict the whole heating and cooling system.

What is Service Call Fee?

A Service Call Fee is a bill for the expense associated with the time and travel to diagnose, inspect and provide expert recommendations for a home’s heating or air conditioning system by a certified professional technician. Coupons can be found on out website.

What Can Cause An HVAC System to Freeze Up?

This is an excellent question. There are an abundance of possibilities that can cause your HVAC system to freeze up; almost all of them usually need to be corrected by a professional technician. Determining the air filter is clean or replaced and making sure the airflow is not restricted are about the only task a homeowner should simply identify or handle themselves.

Low refrigerant: In some cases freezing up is initiated by a leak in the refrigeration lines. Weak solder joints, fiction from piping rubbing or vibrating against an object, leaking valves or loose fitting can cause leaks. The length of time your system has been installed and the nature and location of the leak are the determining factors on whether to have the system repaired or replaced.

Dirty evaporator coil: Over time, the evaporator coil will become dirty. On these occasions, the results are similar to those of having a dirty filter. Gradually you will lose airflow, slowly enough that you probably would not realized until it freezes up or is not cooling adequately. You will need to contact a heat and air expert to remedy the problem.

Defective blower motor or relay: A blower motor running at an improper speed or not running at all can cause freezing. It can also be sporadic, starting at full speed and slowing down after it heats up. Or a relay could cause it to start one time and not the next. In either case, you will need to contact a heat and air expert to correct the problem.

Should you discover the your system was freezing due to dirty air filter, after replacing or cleaning the filter, you can hasten the thawing process by turning the system off and then running on only the fan. If you have a heat pump system, you can try turning the system to heating mode until the ice has melted. After the ice has melted, switch the system settings back to normal. If the system refreezes, contact Smith Brothers Heat and Air to solve the problem.

How Often Should I Change My Air Filters?

There are several types of filters and when to change them depends on several variables, such as:

  • Type of filter your AC system requires.
  • The overall air quality of your city area home.
  • Pets: birds, cats, dogs, hamsters, (do you have one?), etc.
  • Number of occupants in the house.
  • General air pollution in your home area, or construction taking place nearby.

Now let’s look at the types of filters:

Fiberglass filter:

This throwaway air filter is the most common type. Layered fiberglass filters are laid over each other to form the filter media and typically are reinforced with a metal grating that supports the fiberglass to prevent failure and collapse. These filters generally need to be replaced every 30 days.

Polyester and pleated filters:

These filters are similar to fiberglass filters but typically have a higher resistance to airflow a superior dust-stopping ability. These filters can typically be changed every 30-90 days.

High efficiency particulate arrestance (HEPA) filters:

These units filter the air passing through them at a very fine scale. The U.S. Department of Energy (DOE) and its contractors use HEPA filters that meet DOE standard STD-3020-97, specification for HEPA Filters Use by DOE Contractors, to filter 99.97 percent of all particles 0.3 microns or larger. HEPA filters should be should be changed every 6 months.

Washable air filters:

These products are not as common and rely on the build-up of dust along the cloth to improve the efficiency of the filter. Industrial processes involving high volumes of coarse dust are typical applications. These filters vary depending on which filters you have. There are 30 day, 60 day and 90 day washable filters.

If you are unsure or too busy, you can always give us a call and set up a maintenance schedule with us and let us do all the work for you.

Why Should I Do Preventative Maintenance?

This is an extremely important question. It is the one everybody should be asking. If people did more preventative maintenance, they would spend a lot less on major repairs. Fall and spring maintenance can verify any problems before it happens in the middle of the winter or on a 100 degree day in the summer. Preventative maintenance call also save you money on replacement parts before they go bad and extend the life of of your system. it gives you peace of mind during the days with extreme temperatures.