Tag: HVAC maintenance

HOW LONG DO CENTRAL AC UNITS LAST?

Posted on | by Elevation Mechanical | Leave a Comment on HOW LONG DO CENTRAL AC UNITS LAST?
central ac unit

How Long Do Central AC Units Last?

Central AC units circulate temperature-controlled air through an interconnected system of air ducts (both supply and return), which can include wall vents, floor vents, or even vents in the ceiling(s) covered by grills. They supply the air from the AC unit to the building (your home, or the office, etc.). As warm air starts to build up within the room(s), it passes back to the central AC unit, via all the return ducts and registers.

Central AC units also play a part in dehumidifying the incoming air. If you run a dehumidifier within the air-conditioned building it will push the energy costs up, because both the dehumidifier and the central AC unit will also be guzzling a huge amount of power to reduce the temperature in the building. Also, this continuous extra pressure on the unit, means its entire life span is greatly reduced. The life expectancy of your AC system is heavily dependent on how it is used and strained it is on a regular basis.

Factors Affecting The Longevity Of A Central AC Unit

  1. Size – The size of your unit should be appropriate for the building, or home. Short cycles put more pressure on the AC unit’s components. A system bigger than the size needed is not optimal. Also, smaller units will stay on too long, again putting serious pressure on their components.
  2. Installation – Proper installation is key to increasing the life of a unit.
  3. Regular Maintenance – In the absence of routine maintenance, the longevity of a central AC unit can be severely reduced.

Reasons To Change Your Central AC Unit

  1. It’s More Than Ten Years Old – A Decade is a very long time in the life of an HVAC system. Only the units that undergo regular maintenance and have their parts repaired and/or replaced, ever cross this threshold. Not having your central AC unit serviced at least once each year can prove to be detrimental. Along with that, you must remember that each of the individual components has a different life span. For example, the filter(s) will need washing (or replacing) around 4 times during each year. This number can increase to around 12 times, in cases where it is running for the majority of the day. In any case, you should keep a very close watch over your central AC unit to see if it requires replacement if it’s more than a decade old.
  2. It Uses Freon – Harmful CFCs (Chlorofluorocarbons) that used to be released, punctured huge holes in the ozone layer and so all AC units that released any CFC were banned quite a few years back. HCFC-22 or R-22, better known as “Freon” its massively popular brand name, is one such banned Hydrochlorofluorocarbon (HCFC). If your central AC unit uses Freon as a refrigerant get it replaced immediately. Not only is it harmful to nature and will cause you a mountain of expensive problems if it leaks, but almost no supplier stocks it anymore, making it nearly impossible to refill your unit with the chemical.
  3. Multiple Motor/Compressor Break Downs – An aging AC unit with a failing compressor/motor is a disastrous combination. So in case the motor or compressors start breaking down at regular intervals, you should try and replace the entire central AC unit. The costs may seem huge, but the costs to have just these major components replaced are quite high themselves, and even then the unit may break down again.
  4. Too Many Issues – Central AC units often make sounds, especially during cycling. However, if it starts making too much of a ruckus it might be time to have it evaluated to check its condition. Aggressive sounds can be proof of serious problems and even though they may not result in the need for a complete replacement. If you start replacing part after part in a central AC unit you can rack up a bill in the thousands. In fact, any time you see that the cost to maintain the AC unit is getting out of hand, like having to call the technician too frequently, and/or you’re having to replace parts regularly, you should get a new unit installed, because the running costs will only keep increasing.
  5. Issue with Installation – If any mistakes were made during the time of its installation, or issues cropped up during the installation process, it can have a big effect on the longevity of a central AC unit. They can even lead to safety hazards – like fires or even electrocution. AC units perform favorably only when installed correctly. So, in case you find any installation issues when you hire a contractor to inspect the unit, the intelligent move would be to replace it. The results and “costs” if you leave a situation like this unchecked can be severe.

Average Life Expectancy

Central AC units have to withstand a lot of abuse having to continuously control the temperature of entire buildings (in some cases), all year-round. So talking about the average life expectancy of such a unit, you need to check the type of unit that was installed. For units that are well-built and durable and made with top-quality parts the unit should be able to withstand anything thrown at it for a number of years.

However, the longevity of any central AC unit is heavily reliant on the type of repair and replacement policy in place. Conducting regular checkups of the unit and carrying out repairs and/or replacement of parts whenever necessary heavily increases the lifespan of a unit. Going by CNN’s research, well-maintained HVAC systems that receive regular tune-ups can last for up to 25 years. You will, however, require repairs and/or replacements within that period.

Final Words

There are a number of things that are extremely necessary to increase the longevity of your central AC unit, including routine checkups, regular maintenance, repairs, and replacements. However, there will be a time when this will not be enough and you must replace the entire unit. So be on the lookout for the signs, as mentioned above. That way you can stay on top of the perfect time to make the change.

CAN I REPLACE MY FURNACE WITHOUT REPLACING MY AC?

Posted on | by Elevation Mechanical | Leave a Comment on CAN I REPLACE MY FURNACE WITHOUT REPLACING MY AC?
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Can I Replace My Furnace Without Replacing My AC?

Do you have problems with your furnace? Do you have problems finding whether your furnace needs replacement or not? Are you confused about whether to replace your air conditioning along with the furnace or not?

These are the questions that plague many customers that have HVAC systems installed. The fact remains that heating, ventilation, and air conditioning systems are very sophisticated and intricate in their design, parts, and components. Therefore one must ascertain the need for the parts, repairs and replacements.

Repair Or Replace?

Furnaces, like any other component of the HVAC system, suffer depreciation. There are wear-and-tear problems that reduce the efficiency of the furnace.

The first consideration while encountering such a problem related to the furnace is whether to repair or replace it.

Many issues can be dealt with by an HVAC maintenance team. Repairing a furnace takes less time, money, and labor than replacing the furnace. Let us consider all the situations that require the furnace to get repaired.

  • Changing the Filters:

Sometimes, a dirty filter causes many issues in the furnace. Due to dirt, the filters get clogged, which reduces the free flow of air. This increases the pressure on the fan motor. This leads to the motor getting burn-out. The burning out of the motor leads to an increase in the electricity bills. Therefore, it is advisable to change the filters in 2-3 months regularly.

  • Inspect the Thermostat:

In many cases, the furnace might not be the actual problem. It would help if you inspect the thermostat. Some of these are battery-run. If the thermostat has a low-battery, it may interrupt its efficient working.

  • Inspect the Circuit Breaker:

If the furnace is not getting turned on, then one must look at the circuit breaker. Sometimes the furnace circuit is not in the same direction as the rest of the circuits. Therefore, one must try to flip it off and then turn it back on.

Issues With The Pilot Light:

The older furnaces have a pilot light. If the light is out, then the furnace does not work. You may relight it on your own or call a professional HVAC team to fix it.

If, after proper inspection and fixes, the issue is not solved, then you may have to replace the furnace. The following are the cases where the only solution is to replace your furnace:

  • When your furnace has crossed 15 years

The average lifespan of furnaces is about 15-30 years. That does not mean that you have to stick to your old furnace for 30 years. Often, a furnace that is over 15 years old becomes less efficient and has some issues consistently. Rather than spending tons of money on repairing the old furnace, you may buy a new one. This would be a more prudent approach to solving your furnace issue.

  • When you see a consistent rise in Electricity Bills

Furnaces, as they get older, tend to burn-out. This makes the furnace work harder. As a result, electricity bills rise. Then, it is appropriate to replace the furnace and bring down the electricity costs.

  • When it becomes too noisy

Soft noise from the furnace can be expected. But any loud hissing, humming, popping, or screeching noise needs to be checked. The louder the noise, the more they need a furnace replacement.

Are You Replacing Furnace And AC Together?

Many salespersons may advise you to replace the air conditioning unit along with the furnace. But this might not be a prudent solution for you. There are a lot of factors to be considered before arriving at such a decision.

Sometimes, when you change one component and introduce the new part with the HVAC system, the system as a whole may suffer and not work optimally. Mismatched parts and components can create many problems like:

  • Reducing the System’s Lifespan

When some parts are introduced in the air conditioning system, the new mismatched furnace may lead to more issues than it intended to solve. The overall efficacy and functionality of the HVAC system are compromised. This may cause more problems and warrant more repairs in the future.

  • Causing Inefficiencies

When the furnace is replaced without replacing the entire air-conditioning unit, and the new furnace is incompatible with the HVAC system, the entire system suffers from reduced efficiency. The air conditioning is less effective. This defeats the whole purpose of the replacement.

  • Doubling the costs

When incompatible parts of the HVAC system work with lesser efficiency, one must pay for two installations. Firstly, the furnace installation in the immediate time frame. The other one is the air conditioning system’s installation costs incurred in the future due to the parts incompatibility and the issues arising thereof.

However, replacing the AC and furnace together might not be a plausible solution in the following cases.

  • If the AC is new:

Suppose you have moved places and the furnace in your new home is ten years old. However, only a few years ago, you purchased your air conditioning system. You may replace your furnace without replacing your AC since the furnace may have irregularities in its functioning while the AC is perfectly well.

  • Checking the air conditioner when the furnace is being replaced:

When the furnace is replaced with a new one, one must check the evaporator and coils of the air conditioning system to determine whether it is functioning well or if there are some leakages. If the air conditioning system is working efficiently, then you may replace the furnace without replacing the air conditioning unit. However, if there are some issues like leakages etc., one must have an HVAC team inspect and let them replace the furnace and the air conditioning system together. This will save on the future costs of repairs and replacements.

Conclusion

To sum up, when you have to replace the furnace and your air conditioning unit, you must consider the factors like parts mismatch, the lifespan of the furnace and the AC system, and future repair costs, among others, to come to a definite conclusion. Replacing the furnace and the air conditioning system is an expensive affair; therefore, one must take a prudent decision by doing a thorough cost-benefit analysis.