helpful furnace tips

7 Helpful Tips for Replacing Your Furnace Filter

In the same way that you need to change the oil in your car every 6,000 – 10,000 km to keep it running smoothly, your furnace filters need to be swapped out regularly too. Clogged or old filters are inefficient, can damage your furnace, and even drive up your energy bill as your furnace has to work overtime to do what it needs to.

Luckily, all of this is preventable with a regular filter replacement. Best of all, it’s easy to do yourself. Here are all the tips and tricks you need to know when replacing your furnace filter.

1. Follow the replacement schedule

There are two types of filters – basic filters, and premium. Basic filters need to be changed monthly, while the premium can last up to 3 months (depending on your home). You can tell which filter you already have in place by pulling your existing one out to take a look. The premium filters are typically pleated and opaque, the basic are flat and more translucent. No matter which option you go with, we suggest checking your filter each month just to be sure it’s in good condition. As a general rule of thumb, if the filter is looking grey and dirty it’s time for a new one.

2. Right-size filters

When it is time to swap out your filters, it’s important to make sure that you’re getting the right size filter for your furnace. To find the size of the filter you need just pull out your existing filter and check along the sides where the dimensions should be listed.

Don’t forget to double-check that you bought the right one before opening the package so you can return it if you need.

3. Choose the right filter

Depending on your lifestyle (pets, dusty hobbies like woodworking, etc.) and your preference, there are different types of filters with varying levels of ability to catch these smaller particles from the air. This can be identified by what’s called a microparticle rating. The higher the rating number, the smaller of particles it can remove from the air. For example, higher range filters (known as allergy-rated filters) can pick up pet dander, pollen, and even smoke and are rated around 1000 microparticles. Your most basic filter, rated at roughly 300 microparticles, will pick up mostly dust and lint. Each filter is priced accordingly, so expect to pay more for the higher number of microparticle ratings.

For large-format filters (typically 4-6” thick) there’s an entirely different rating system, the most common of which being the MERV (Minimum Efficiency Reporting Value) rating. Filters with a rating between 5 – 8 MERV are equivalent to the filtration a basic standard filter offers and will capture particles 3.0 – 10.0 um (short for tiny particles known as micron’s). A 9-12 MERV rated filter will catch particles as small as 1.0 – 3.0 um and remove 90-98% of particles in the air. 13 – 16 MERV rated filters will capture particles as small 0.3 – 1 um and remove 95- 99% of particles from the air. This level of filtration is equal to what is used in surgical operating rooms. MERV 17 Level filtration is equal to filtration delivered by a HEPA Filtration System. As with standard filters, as MERV rated filters increase infiltration ability, they also increase in price.

4. Follow the arrow

Your furnace isn’t something you deal with too often, so some of the things that might be instinctual to a furnace repair person won’t come naturally to you. When you install your new filter, make sure the airflow arrow (printed on the top or side of the filter) is pointed towards the furnace. This arrow is the direction of air flow.

5. Don’t force it

As you install your new filter, it should slide in gently and without the need for force. If it feels at all like it’s sticking or difficult to get in, try removing it altogether and doing it again. If you force the filter, it might bend or break.

6. Set a reminder

Owning a home can involve a regular amount of upkeep, so we recommend setting helpful maintenance reminders for yourself. One of the ways to do this is by writing the date the filter was installed on the side of the furnace filter (permanent markers work well for this). Want to automate it? Set a calendar reminder in your phone for a monthly check-in.

7. Coverup

You want to keep dust from entering your furnace – and your home. Filter covers are designed to fit over the filter slot to keep everything contained. Most newer furnaces come with filter plate covers to protect you and your furnace. Be sure to put your filter cover back in place once you’ve swapped out your filter. Keep in mind that filter covers are required by most local building codes as they prevent the furnace from drawing air in the furnace room and circulating this air through the house.

Did you know? Your furnace filter also filters out dust and debris when you are running your air conditioner. Both systems use the same ducting to distribute air throughout your home but air conditioners are even more sensitive to airflow than furnaces. They can freeze up and stop working without adequate airflow. That’s why it’s important to check your furnace filter regularly during the heating AND cooling season.

A little care can go a long way

We hope that after reading this article you’re feeling more confident than ever to update your furnace filter. And if this sounds like a lot of work, we’re here to help. Give us a call to schedule your regular furnace upkeep and maintenance or learn more here.


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Quote guarantee

When we receive an online furnace or air conditioning quote request and the customer accepts the initial quote, we’ll send a comfort advisor to confirm the provided information and quoted price in person. 


If the comfort advisor finds any inaccuracies during the in person visit, we’ll revise the quoted price on the spot. After the quoted price is confirmed with an in person visit, the price is set. 


If there are unforeseen complications on the date of install, Advanpro will not pass the additional costs along to the customer. (See exceptions in Terms below.)



The guarantee is not valid if the customer provides inaccurate information when Advanpro seeks to confirm any information about the quote. This also applies to the on-site confirmation visit. 


In the exceptional circumstance that the chimney liner required for most furnace installations cannot be installed or gets stuck during installation, the guarantee no longer applies and we will provide a supplementary quote to complete installation. 

Repair guarantee

If the diagnosed issue is not fixed by our initial repair, we will dispatch the first available service technician to return and fix it at no additional cost.


If we determine that there is an additional unrelated issue, there may be a charge for the additional repair.

Correct A/C sizing guarantee

If the air conditioner Advanpro installs is determined to be improperly sized for your home, we will supply and install the correctly-sized A/C condenser at no additional cost. 


Advanpro must be immediately notified of any install issues. The guarantee applies for 3 months, starting from the installation date. The guarantee no longer applies if, at any time after the quote or installation, modifications are made to the home that impact cooling requirements.

Correct furnace sizing guarantee

If the furnace Advanpro installs is determined to be undersized for your home, we will supply and install the correctly-sized furnace at no additional cost. 


Advanpro must be immediately notified of any install issues. The guarantee applies for 3 months, starting from the installation date. The guarantee no longer applies if, at any time after the quote or installation, modifications are made to the home that impact heating requirements.

A/C Tune Up

Regular preventative maintenance improves efficiency and extends the lifespan of your air conditioning system, with the following benefits:


  • Reduced electricity bills and operating costs. When the unit operates as designed, electricity usage is reduced.
  • Maximized cooling capacity. Home comfort on the hottest of days with minimum run time.
  • Minimized repair bills. Detect and fix small problems before they get worse.

HRV Cleaning

Most homes built in the last few years have a Heat Recovery Ventilator (HRV), which efficiently replaces stale indoor air with fresh outdoor air, all year round.


As with any other air-handling equipment in your home, your HRV should be cleaned regularly to ensure the best possible indoor air quality.


If you aren’t sure if you have an HRV, call our team to find out how you can tell.

Duct Work Sanitizing

If you or your loved ones suffer from respiratory issues or allergies, or you’re concerned about the quality of the air that you are breathing, then our sanitizing treatment will give you the reassurance that your ductwork is sterile and free of debris that could negatively impact your respiratory and overall health.


Microban is our hospital-grade sanitizing solution, which kills 99.99% of germs, viruses, funguses, molds, and other pathogens.


We also offer Benefect, an all-natural sanitizer made from plant extracts, which also kills 99.99% of germs, viruses, funguses, and molds. ​

Exhaust Flu Stack Cleaning

Mid-efficiency furnaces produce a sand-like, mildly-corrosive byproduct. This substance condenses in the exhaust flu stack and collects over time near the inducer/venter motor, restricting exhaust gas flow. Eventually, it enters the inducer motor and causes premature wear on the furnace.


Exhaust flu stack cleaning removes the build-up to reduce the chance of motor failure and maximize the life span of your furnace. Preventative maintenance ensures your furnace runs efficiently all Winter long — without costly no-heat emergencies. 

A/C + High-efficiency Bypass

The secondary heat exchanger in a high-efficiency furnace or A/C coil has delicate, closely spaced fins that must be protected during your furnace and duct cleaning.


For furnaces that require a bypass, we temporarily install a filter above the heat exchanger or A/C coil, and position our duct vacuum above the filter.


This bypass procedure prevents damage by ensuring all dust and debris in your supply duct work is collected before reaching the heat exchanger or A/C coil.


Standard furnaces without A/C don’t have secondary heat exchangers or A/C coils and don’t require the bypass procedure.

Furnace Tune Up

Regular furnace tune ups are essential to maximizing the lifespan and efficiency of your furnace, so you can rely on it to keep you warm all Winter long.​


During our 30+ point inspection, we check all furnace systems to identify components that are worn out and need replacement. Replacing parts before they break — preventative maintenance — maximizes heating efficiency, avoids no-heat emergencies, and saves on costly service calls. 


Home furnaces can last for 20 years or more if well-maintained. A professional furnace tune up every two years helps to preserve your investment for decades.

Reverse Octopus Whip Tool

The reverse octopus whip has eight 16” flexible tentacles, which whip around blasting high-pressure air in all directions as it moves through your duct work.


The tool agitates and dislodges the most hard-to-reach dust, debris, and contaminants, moving them toward our duct vacuum for collection and disposal.

Brush Cleaning Method

Our high-speed rotary brushing equipment sweeps the entire interior surface of your duct work, ensuring that all dust, debris, and pet hair are vacuumed away.


Physically cleaning the entire length of your duct work ensures that no contaminants are left behind, increasing your indoor air quality and peace of mind.

Dryer Vent Cleaning

Dryer fires are a top-five cause of house fires. Cleaning your dryer vent regularly greatly reduces the chance of a dryer fire, plus the following benefits:


  • Reduces clothes drying times
  • Lowers utility bills through greater efficiency
  • Extends the life span of your dryer
  • Lessens the amount of allergens in your house

Back Skipper Tool

The back skipper is a 1” diameter rounded ball connected to a long, flexible high-pressure airline.


The 1” ball has jets that discharge high-pressure air, pulling the tool and airline through the length of your duct work.


The high-pressure air moves the dust and debris toward our duct vacuum, where it is collected for disposal.​