CCPHVAC-Changing HVAC Filter

How Often Do I Need to Change My HVAC Air Filter?

Replacing the filter in your air conditioning or HVAC system regularly keeps your equipment working correctly and your electricity bills as low as possible. It’s also something that many homes and business owners forget about throughout the year, which can send your bills to the stratosphere and risk other maintenance issues down the line. Read on to find out the recommended frequency at which to change your filters!


Now the big question so, how often should you swap out your equipment filter? The short answer is: it depends.

The usual recommendations say from every 30 days for the cheaper filters, to as long as six months for better quality filters. These estimated frequencies assume average usage and differ depending on the type/ size of the filter.

A general rule of thumb for pleated variety of air filters is to replace them every 90 days. As the filter collects more dirt and dust from the air, the efficiency of the filter deteriorates. Find out in the following sections if you should be replacing the filter more frequently.

Does anyone in the property have breathing conditions or an allergy?

Those with any breathing conditions such as asthma are much more sensitive to the airborne particles than those. If you have someone who suffers from something like this living or working in the building, change the filter every six weeks to help ensure the quality of the air is at its best.

Are there animals at the property?

Animals such as dogs and cats shed hair and have smells that build up in the property making it essential to change the filter every two months. Usually, dogs and cats shed most of their hair just before spring and just before the autumn, which are the priority times to you should be replacing the filters.

Do you have young or old people in the property?

Superior air quality is especially important for young children and old folks. Keep your building clean and the quality of the air under control by replacing all of the filters every two to three months.


How much you use your HVAC equipment

If the country you live in has a temperate climate (such as the UK) and use your HVAC for a maximum of a few hours a day, a single air filter can last you from a complete season to a whole year. If your HVAC equipment is running constantly throughout the year, you must change your filters every couple of weeks (especially if you’re using cheaper or low-quality filters).

The size of the building

 Air conditioners in smaller houses or buildings need to pump out less air for the same quantity of temperature change, this could mean filters need to be changed less often. These items of equipment often have smaller filters, though, and because of this may need to be changed out just as frequently as a filter in larger buildings.

The air quality within your home or building

The air within and outside your building will be a major factor with your filter’s replacement frequency cycle. Pets and poor air quality, for example, will lead to you needing to replace the air filters more frequently throughout the season.


Any use of your equipment will lead to an amount of dirt being collected in the air filter – that’s what it is designed to do, after all.

So what is the best way to know when your filter has collected too much dirt and grime and will need to be swapped out?

There are no strict guidelines available, but if your filter shows only a slight layer of dirt under and the filter’s material is still visible through it, your filter is in a perfectly fine condition and working order. Once it gets past that point, it’s ready to be swapped out. If there are signs of a visible coating of dirt and grime covering most of the area the filter’s surface that is thick enough to obscure the filter material, that is a sure sign that the filter has been in your HVAC equipment for far too long a time.

Every couple of weeks, take out the filter and check it over! Does it have a musty type odour? Is the filter covered with any dust? If you are unsure, it’s always best to be proactive and replace your filters. They’re relatively inexpensive to purchase and there are always good deals online, and that small expenses to keep your vents clear will be noticed when your energy bills come in. If it’s been a long length of time since you’ve changed the filters last, we can help you find the correct make and size for your type of air conditioning or HVAC system.

Ready to replace your filter? Contact us here and get your equipment back to its most economical and efficiency 

Popular Posts

Do You Know Your AC Components?


Are you considering getting AC installed in your home or office in 2020? if you are then here is a simple break down of what the main components are, what their purpose is and whereabouts in the property they will be positioned. (1) Compressor The compressor unit is the box-shaped … Read More

Summer 2020 Outlook – Hot One Presumed

2020 and 2019 on the empty road at sunset. New Year concepts


The Met Office has predicted that 2020 will be another hot. Just what we need after the months of wet weather. The last few years have seen year on year temperatures rise with 2016 being the hottest in recent years.  You can read what the MET Office has predicted for … Read More

More Rain = Damp Conditions for Your HVAC

CCP HVAC - moul din your hvac


Just as we thought that the rain was over following yesterday’s sunny weather e are back to rain today. The constant rain and damp conditions are not only bad more our mood, but it can also be bad for our HVAC equipment.  Damp conditions combined with a rise in temperature … Read More

How to Calculate W/M2 for HVAC Equipment

CCPHVAC - how to calculate wattage


Any heat pump or central air conditioning system must be correctly sized. Doing so will ensure you can save money and make the building interior more comfortable for occupants. A system either too large or too small may not provide sufficient cooling and may result in the equipment having a … Read More

2020 Summer Preparations – Cooling Coil Maintenance

CCPHVAC - coil maintenance


The summer of 2019 saw record temperature highs across the country, with thermometers reaching scorching temperatures in the mid 30s. I know at the moment those temperatures may seem a while away, but the summer of 2020 will soon be upon us. It is time to get prepared and give … Read More

Spring HVAC Maintenance Tips

CCP HVAC - spring cleaning


We are already halfway through January. Have you included checking over your HVAC equipment in your spring cleaning? It’s very important to give some TLC to your HVAC system once a year to prolong the lifespan of your equipment and prevent additional and unnecessary expenses. Here is a list of … Read More

The 5 Types of Air Conditioning Compressors

CCPHVAC Tottenham Court Rd Featured Image


Inside all air conditioning units is a compressor. This compressor plays a very crucial role in compressing the refrigerant as it enters the equipment to bring up the temperature. Once it has been heated, the gas exits the unit and enters the condenser so that the cooling can commence. While … Read More

How Often Do I Need to Change My HVAC Air Filter?

CCPHVAC-Changing HVAC Filter


Replacing the filter in your air conditioning or HVAC system regularly keeps your equipment working correctly and your electricity bills as low as possible. It’s also something that many homes and business owners forget about throughout the year, which can send your bills to the stratosphere and risk other maintenance … Read More

A Premium Approach Towards HVAC Maintenance

CCPHVAC - Maintenance


CCPHVAC is the name that you can always trust to have you covered on any matter associated with air conditioning equipment throughout Hertfordshire and the South East. We believe in our experienced team, which are made up of ambitious technicians, ready to make sure your HVAC system runs its best and … Read More

Smarten Up Your HVAC



Everybody in 2019 is looking for smarter technology, whether it is for their home or business. The HVAC industry is no different, and throughout 2019, there have been some substantial leaps forward. These new technologies are designed to help us control our environments easier and cheaper. Here is a list … Read More

Interesting Facts About AC

CCPHVAC Interesting Facts


At CCP HVAC we love everything about air conditioning. We love its history and most importantly we love how it transforms an environment to make in comfortable to be in. If you are looking for a new HVAC system and you need some expert advice, then please get in touch … Read More

2018 Is In The Past Here’s to 2019

CCPHVAC-End of 2018


With 2018 coming to an end and the start of a fresh year approaching it is time to take a look back over what has been one of the most successful years since the company was founded. Barry Fisk, the Managing Director and founder of CCPHVAC Ltd had the following to say … Read More

Project Manager Required

CCPHVAC-Project Manager Job


CCP HVAC Ltd is seeking an experienced HVAC Project Manager to work on multiple new projects in and around London. The ideal candidate will be responsible for complete project management from producing the project start documentation to close out procedures and handing the project back to the client. For many … Read More

Safe Contractor Accreditation

CCPHVAC - Safety Accreditation


Congratulations to our team for successfully renewing our SafeContractor accreditation. The SafeContractor scheme is an SSIP-approved health and safety assessment scheme. It shows that we  demonstrate that we take responsibility for our legal health and safety obligations and our health and safety paperwork is up to date and meets legal … Read More

Keep Your Servers Cool

CCPHVAC - Keep Your Servers Cool


I’m sure you are aware, servers need to be cool and free from moisture. Even with good placing these vital pieces of equipment are still susceptible to high temperatures and moisture which can drastically affect their performance and shelf life. The ideal temperature for your server room is between 18oc … Read More

Air Wars – What Are They & How to Prevent One



If it is not happening already, your office could soon be having a war, a war that will be waged between the two types of employees: those who are comfortable in an air-conditioned environment, and those who are shivering and tutting their way through the workday in jackets and cardigans. … Read More

Air Conditioning Related to Business Growth

CCPHVAC-Business Growth


Enjoying the recent heatwave? Its enjoyable at the weekends when you can relax in the garden or a pub garden, but if you have something to do or a business to run it can play havoc. It’s a known fact that prolonged spells of heat, drastically effects performance of even … Read More

Project Manager Required

CCPHVAC-Project Manager Needed


Due to our current expansion and several large projects starting soon, CCPHVAC are looking for a new Project Manager to help coordinate and run these projects. The ideal candidate should have an excellent grasp of everything required to manage small, medium and large installations from start to finish. They will … Read More

World Cup 2018 Competition

CCPHVAC-World Cup Competition


To help celebrate the England national side getting through to this weekend’s quarter final, we would like to offer you the chance to win a great prize. We are offering the lucky winner a £50 Marks & Spencer voucher. This voucher can either be spent in store or online. You … Read More

Don’t be Left in the Heat

CCPHVAC-Heatwave Image


Don’t be left sweltering this summer because of faulty equipment. Giving your customers, employees or yourself a cool environment to shop, eat or work in is crucial to your business and wellbeing. Follow these 5 tips to keep your AC equipment functioning as efficient as it should. 1- Clean your … Read More

Quality Work for Well Known Brands


Over the recent years we have worked for some of the most well known restaurant brands in the UK. These brands demand a very high standard of work and the fact that we keep being awarded further for these projects gives us great job satisfaction. Global brands like Itsu, Pret … Read More

Leave a Reply

Your email address will not be published.