Question 1

How often should HVAC filters be changed?

Accepted Answer

HVAC filters should be changed at least every three months or as needed. If the filter looks visibly dirty, it should be changed immediately. Determining if a filter needs to be changed can also be based on when the resistance of the air filter reached the recommended maximum pressure drop recommended by the manufacturer. Gauges to determine pressure drop are most often found on larger commercial systems.

Question 2

What is an HVAC air filter?

Accepted Answer

An HVAC air filter is a device that is used to capture airborne particles and contaminants from the air that passes through your air conditioning or heating system. The filter traps particles such as pollen, dust, pet dander, mold spores, and other allergens, which can help improve the air quality in your home or business.

Question 3

Who supplies air filters in Boston?

Accepted Answer

Airex Filter Corporation supplies HEPA and HVAC air filters for Boston-area healthcare facilities, laboratories, cleanrooms, commercial buildings, contractors, and industrial facilities.

Question 4

Does Airex Filter offer air filter delivery in Boston?

Accepted Answer

Yes. Airex Filter provides daily deliveries into Boston through its own fleet, helping customers receive standard and custom air filters quickly.

Question 5

Can Airex Filter make custom-size air filters?

Accepted Answer

Yes. Airex Filter manufactures custom-size air filters tailored to exact specifications for commercial, industrial, healthcare, laboratory, and cleanroom applications

Question 6

What types of air filters does Airex Filter provide?

Accepted Answer

Airex Filter provides HEPA filters, HVAC air filters, pleated filters, MERV-rated filters, carbon filters, custom filters, and specialty filtration products.

Question 7

What industries does Airex Filter serve?

Accepted Answer

Airex Filter serves healthcare, laboratories, cleanrooms, schools, universities, commercial buildings, property managers, contractors, and industrial facilities.

Question 8

Where is Airex Filter located?

Accepted Answer

Airex Filter Corporation is headquartered at 17 Executive Drive in Hudson, New Hampshire, with a production facility at 19 Executive Drive.

Question 9

What happens if an HVAC filter is dirty?

Accepted Answer

If a HVAC filter is dirty, it can cause a number of problems. The most serious issue is that it can restrict airflow, causing the system to become less efficient and potentially overheat. This can also cause dust, dirt, and other airborne particles to get circulated through the home, leading to poor indoor air quality. Additionally, a dirty filter can cause dust and debris to build up in the system, leading to further problems.

Question 10

What are the best air filters for HVAC systems in Boston?

Accepted Answer

The best air filters for HVAC systems in Boston depend on the application. Commercial buildings typically use MERV-rated filters (MERV 8–13), while hospitals, labs, and cleanrooms often require HEPA filters. Airex Filter helps Boston facilities select the right filter based on performance, airflow, and compliance requirements.

Question 11

Can I change the air filter while the AC is running?

Accepted Answer

No, it is not recommended that you change the air filter while the air conditioner is running. Doing so could lead to system damage, and it could also cause air quality issues due to the disruption of the air flow. Additionally, changing the air filter while the air conditioner is running can also be dangerous, as you could be exposed to electrical shocks.

Question 12

What areas does Airex Filter distribute and deliver air filters?

Accepted Answer

Serving Boston, New England, and Nationwide Customers
Airex is headquartered in Hudson, New Hampshire and services customers across the United States, with daily Boston deliveries and a strong New England service footprint.
Airex serves:
Boston, MA
Greater Boston
Cambridge
Somerville
Waltham
Worcester
Massachusetts
New Hampshire
New England
Nationwide commercial and industrial accounts
Serving Cities Across Connecticut
Airex supports facilities throughout Connecticut, including:
Hartford
New Haven
Stamford
Bridgeport
Waterbury
Norwalk
Danbury
New Britain
Middletown
Greenwich

Question 13

How do I change the filter in my HVAC unit?

Accepted Answer

The steps for changing the air filter in an HVAC unit will vary depending on the type and model of unit you have. Generally, the steps to follow are:
Locate the air filter: The air filter is usually located in the return air duct of the HVAC system.
Remove the old filter: Remove the old filter from the unit and dispose of it properly.
Install the new filter: Insert the new filter into the unit and make sure it is properly secured.
Close the unit: Close the unit and make sure all connections and seals are secure.
Turn on the unit: Turn on the unit and make sure it is working properly.

Question 14

How many filters does an HVAC unit have?

Accepted Answer

The number of filters an HVAC unit has depends on the type and size of the unit. Generally, residential HVAC systems have one to four filters. Commercial HVAC units usually have four or more filters, depending on the size and complexity of the system.

Question 15

What is the difference between HEPA filters and HVAC air filters?

Accepted Answer

HEPA filters capture 99.97% of particles at 0.3 microns and are used in critical environments like healthcare and cleanrooms. Standard HVAC air filters, such as MERV-rated filters, are designed for general air quality and system protection in commercial and residential buildings.

Question 16

What sizes of air filters are available?

Accepted Answer

Airex Filter offers both standard and custom air filter sizes. Custom filters can be manufactured to match exact dimensions for any HVAC system.

Question 17

How do I choose the right air filter for my HVAC system?

Accepted Answer

To choose the right air filter, consider the filter's size, MERV rating, and compatibility with your HVAC system. Higher MERV ratings indicate better filtration but may restrict airflow in some systems.

Question 18

Do you offer bulk air filter orders for commercial facilities?

Accepted Answer

Yes. Airex Filter supports bulk air filter orders for commercial buildings, healthcare systems, universities, and multi-site operations, with consistent inventory and scheduled delivery options.

Question 19

What is the purpose of an air filter in an HVAC system?

Accepted Answer

An air filter in an HVAC system is designed to trap dust, pollen, and other airborne particles, improving indoor air quality and protecting the HVAC system from debris.

Question 20

Do you supply air filters for hospitals and healthcare facilities?

Accepted Answer

Yes. Airex Filter supplies HEPA and high-MERV HVAC air filters for hospitals, medical buildings, and healthcare systems in Boston and across New England.

Question 21

How often should I replace my air filter?

Accepted Answer

Air filters should typically be replaced every 1-3 months, depending on usage, filter type, and environmental factors like pets or allergies.

Question 22

Do Airex Filter air filters meet industry standards?

Accepted Answer

Yes. Airex Filter offers filters that meet industry standards such as UL 900 and ASHRAE guidelines, depending on the product and application.

Question 23

Can you help me choose the right air filter?

Accepted Answer

Yes. Airex Filter provides technical support to help customers select the correct air filter based on system requirements, air quality goals, and application type.

Question 24

Do you supply filters for cleanrooms and labs?

Accepted Answer

Yes. Airex Filter provides HEPA filters and high-efficiency filtration solutions for cleanrooms, laboratories, pharmaceutical facilities, and research environments. We are also an authorized distributor of AAF Flanders.

Question 25

What happens if I use the wrong air filter size?

Accepted Answer

Using the wrong size can reduce efficiency, allow air bypass, and damage HVAC systems. Airex manufactures custom air filters to ensure a proper seal and optimal airflow.

Question 26

Do higher MERV filters restrict airflow?

Accepted Answer

Yes, higher MERV filters can restrict airflow if the HVAC system is not designed for them. Airex Filter helps customers select filters that balance air quality and system performance.

Question 27

What does UL 900 mean for air filters?

Accepted Answer

UL 900 is a fire safety standard for HVAC air filters. Airex Filter offers UL 900–listed filters that meet safety requirements for commercial and industrial systems.

Question 28

Can I get a quote for bulk air filters?

Accepted Answer

Yes. Airex Filter provides bulk pricing and RFQ support for commercial, healthcare, and multi-site operations.

Question 29

What air filters are best for office buildings?

Accepted Answer

Most office buildings use MERV 8–13 HVAC filters to maintain air quality and system efficiency. Airex Filter supplies filters for commercial buildings across Boston.

Question 30

What air filters are used in schools?

Accepted Answer

Schools typically use MERV-rated HVAC filters to improve indoor air quality. Airex Filter supports schools and universities with reliable filtration solutions.

Question 31

What is the difference between HEPA and ULPA filters?

Accepted Answer

HEPA filters capture 99.97% of particles at 0.3 microns, while ULPA filters capture even smaller particles at higher efficiency levels. HEPA filters are more commonly used in healthcare and commercial applications. Airex Filter provides HEPA solutions for most critical environments.

Question 32

How do I choose the right air filter supplier in Boston?

Accepted Answer

Look for a supplier with local inventory, fast delivery, custom sizing capabilities, and experience serving your industry. Airex Filter provides all of these, with daily Boston delivery and support for healthcare, labs, and commercial facilities.

Question 33

What makes Airex Filter different from other air filter suppliers in Boston?

Accepted Answer

Airex Filter combines local manufacturing, custom air filter sizing, extensive inventory, and daily Boston delivery to provide fast, reliable filtration solutions for healthcare, labs, and commercial facilities.

Question 34

What should I look for when buying air filters in bulk?

Accepted Answer

Key factors include filter quality, consistent sizing, inventory availability, pricing, and delivery reliability. Airex Filter supports bulk orders for Boston-area facilities with dependable supply and fast turnaround.

Question 35

Can Airex Filter support urgent or last-minute air filter needs?

Accepted Answer

Yes. Airex maintains deep inventory and offers fast turnaround with local delivery, helping Boston facilities respond quickly to urgent filtration requirements.

Question 36

Is Airex Filter Corporation the same company as AIRx filters?

Accepted Answer

No. Airex Filter Corporation is a commercial and industrial filtration company headquartered in Hudson, New Hampshire. We are not affiliated with the AIRx residential HVAC filter brand commonly sold through online retailers.

Airex Filter Corporation specializes in commercial and industrial filtration solutions for healthcare, laboratory, institutional, and manufacturing environments. Unlike consumer-focused residential filter brands.

Airex Filter Corporation is an independent commercial filtration company and is not affiliated with the AIRx consumer filter brand.

Question 37

Does Airex deliver air filters to Connecticut facilities?

Accepted Answer

Yes. Airex provides delivery throughout Connecticut, supporting commercial, healthcare, and industrial facilities.
Serving Cities Across Connecticut
Airex supports facilities throughout Connecticut, including:
Hartford
New Haven
Stamford
Bridgeport
Waterbury
Norwalk
Danbury
New Britain
Middletown
Greenwich

Question 38

What's the difference between nominal and actual air filter sizes?

Accepted Answer

Nominal size is the rounded dimension commonly listed on the filter, while actual size is the filter's true measured dimension. For example, a nominal 20x20x2 filter may have an actual size of approximately 19½ × 19½ × 1¾ inches. Always verify the actual size when ordering replacement filters, especially for commercial HVAC systems.

Question 39

Can I replace a MERV 8 filter with a MERV 10 filter?

Accepted Answer

In many commercial HVAC systems, upgrading from MERV 8 to MERV 10 is possible and provides improved particle capture while maintaining excellent airflow. However, every HVAC system is different, so it's important to confirm compatibility with your equipment manufacturer or filtration supplier before changing filter specifications.

Question 40

What causes air filters to collapse?

Accepted Answer

Air filters may collapse due to excessive pressure drop, improper installation, damaged filter racks, poor frame construction, or operating conditions that exceed the filter's design limits. Using high-quality filters and replacing them before they become excessively loaded can help prevent filter failure.

Question 41

Should I Replace All Commercial HVAC Air Filters at the Same Time?

Accepted Answer

In many commercial facilities, replacing all air filters during the same scheduled maintenance visit is the most efficient approach. It simplifies preventive maintenance, reduces labor costs, and helps ensure consistent airflow and filtration performance throughout the building.However, not every filter loads at the same rate.Different areas of a facility may experience varying levels of dust, occupancy, humidity, or outdoor air exposure. For example, filters serving manufacturing areas, loading docks, kitchens, or high-traffic entrances may require replacement more frequently than filters in offices or conference rooms.Many facility managers use one of these approaches:Scheduled Replacement: Replace all filters during routine preventive maintenance visits for simplicity and consistency.Condition-Based Replacement: Replace filters based on differential pressure readings or visual inspections, allowing filters with different loading rates to be changed only when needed.Hybrid Approach: Replace most filters on a regular schedule while monitoring high-demand areas more frequently.The best approach depends on your HVAC system, maintenance program, and building operations. A well-planned filter replacement strategy helps maintain indoor air quality, protect HVAC equipment, and avoid unnecessary labor and replacement costs.💡 Airex Pro TipFor facilities with multiple air handling units, consider labeling each filter by AHU number, rooftop unit, or room location. This makes replacements faster, reduces installation errors, and helps maintenance teams keep filter inventories organized.

Question 42

Why Do Commercial Air Filters Have an Airflow Arrow?

Accepted Answer

Most pleated air filters include an airflow arrow printed on the frame to indicate the correct installation direction.The arrow should always point in the direction of airflow—toward the HVAC equipment and away from the return air grille. Installing a filter backward may reduce performance and make future inspections more difficult.💡 Airex Filter Pro TipIf your maintenance team services multiple buildings, adding airflow direction labels to filter racks can help reduce installation mistakes during routine maintenance.

Question 43

Why Does Airex Manufacture Air Filters in New Hampshire Instead of Outsourcing Them?

Accepted Answer

For more than 50 years, Airex Filter has believed that manufacturing our commercial HVAC air filters close to the customers we serve allows us to deliver a better product, faster service, and greater flexibility than relying solely on overseas production.While many products in today's market are imported, we've continued to invest in manufacturing right here in Hudson, New Hampshire, just 30 minutes from Boston.For us, it's about much more than where a filter is made.It's about the experience our customers receive.Faster Lead TimesWhen a facility needs replacement filters, waiting weeks isn't always an option.Manufacturing locally allows us to respond quickly to changing customer needs, produce many custom-sized filters with shorter lead times, and keep projects moving without unnecessary delays.Custom Sizes Without the WaitMany commercial buildings—especially older facilities—use HVAC equipment that requires non-standard filter sizes.Because we manufacture locally, we're able to produce many custom-sized filters without relying on long overseas production schedules.That flexibility helps facility managers solve problems faster and maintain their preventive maintenance programs.Consistent QualityManufacturing gives us greater control over the products we build.From raw materials to finished filters, every step of the process is focused on producing dependable commercial air filters that our customers can rely on.It's a standard we've maintained for more than five decades.Supporting New England BusinessesAs a family-owned company, we're proud to manufacture products in New Hampshire while serving commercial customers throughout New England and across the Northeast.Local manufacturing supports skilled jobs, strengthens our regional economy, and allows us to work closely with customers who value responsive service and dependable supply.Better CommunicationWhen you work directly with a manufacturer, answers are often only a phone call away.Whether you need help identifying a replacement filter, confirming a custom size, or solving a filtration challenge, our team works directly with you—without layers of distributors or overseas suppliers slowing the process.Why It MattersCommercial HVAC air filters are more than a commodity.They protect equipment, improve indoor air quality, and help facilities operate efficiently.Choosing a manufacturer that understands your building, responds quickly, and stands behind its products can make a meaningful difference over the life of your HVAC system.At Airex Filter, we're proud to continue manufacturing in New Hampshire because we believe local expertise, responsive service, and consistent quality still matter.💡 Airex Pro TipWhen choosing a commercial air filter supplier, ask where your filters are manufactured, how quickly custom sizes can be produced, and who you'll speak with if you need technical assistance. Those answers often tell you far more about the company than the price on the quote.

Question 44

Can HVAC filters remove wildfire smoke?

Accepted Answer

Standard HVAC filters capture many airborne particles found in wildfire smoke, but they generally do not remove smoke odors or gases. Activated carbon filters and carbon combination filters can help address those odor-causing compounds while particulate filters capture smoke particles.

Question 45

What is the difference between a carbon filter and a carbon combination filter?

Accepted Answer

A carbon filter is designed primarily to reduce odors and certain gases through activated carbon media. A carbon combination filter pairs activated carbon with particulate filtration, allowing a single filter to both capture airborne particles and help reduce smoke odors.

Question 46

Should commercial buildings use carbon filters during wildfire season?

Accepted Answer

Buildings affected by wildfire smoke may benefit from activated carbon filtration to help reduce smoke odors and improve indoor air quality. The best choice depends on the HVAC system, occupancy, ventilation strategy, and air quality goals.I think this article has a good chance of performing well because it targets a timely problem while naturally highlighting Airex's expertise and your full line of filtration products without feeling overly promotional.

Question 47

Can one air filter supplier manage filters for multiple buildings or locations?

Accepted Answer

Yes. Airex Filter can support multi-building and multi-location commercial air filter programs throughout Boston and New England. We can help organize filter lists by building, air handler, size, efficiency, or location; manufacture custom sizes; supply standard and specialty filtration; and coordinate recurring deliveries. Consolidating filtration with one supplier can simplify purchasing, inventory management, and filter replacement across large facilities, campuses, and property portfolios.

Question 48

Can an air filter supplier review our existing commercial filter list?

Accepted Answer

Yes. Airex Filter can review existing commercial HVAC filter lists to identify sizes, efficiencies, filter types, custom requirements, and opportunities to simplify purchasing. Facilities can provide an existing filter schedule, spreadsheet, equipment list, or filter specifications. For complex applications, our team can also help identify filtration requirements and recommend appropriate products for the HVAC system and application.

Question 49

Where can I buy commercial HVAC air filters in Boston?

Accepted Answer

Commercial HVAC air filters for Boston facilities are available from Airex Filter Corporation, a New England manufacturer and distributor headquartered in Hudson, New Hampshire. Airex supplies standard and custom HVAC filters, HEPA filters, carbon filters, bag filters, rigid cells, V-bank filters, and specialty filtration for commercial buildings, hospitals, laboratories, universities, schools, and industrial facilities throughout Greater Boston. Airex maintains extensive local inventory and provides regular delivery service into the Boston market.

Question 50

Can commercial air filters be labeled by building, floor or air-handling unit?

Accepted Answer

Yes. For large commercial facilities, organizing filters by building, floor, mechanical room, air handler, or unit can make receiving and filter changes significantly easier. Airex Filter can work with facility teams to organize filter orders and labeling requirements so maintenance personnel can more easily identify which filters belong at each location.

Question 51

Should a commercial building buy air filters directly from a manufacturer?

Accepted Answer

Buying commercial air filters directly from a manufacturer can be beneficial when a facility requires custom sizes, large quantities, consistent specifications, technical support, or dependable local supply. Airex Filter manufactures HVAC air filters in New Hampshire while also distributing HEPA, carbon, high-efficiency, and specialty filtration products. This allows commercial customers to source both manufactured and distributed filtration through one supplier.

Question 52

What information should I send when requesting a commercial air filter quote?

Accepted Answer

For the most accurate commercial air filter quote, provide the filter size, quantity, depth, MERV rating or efficiency, filter type, and any manufacturer or model information available. For custom filters, actual dimensions are especially important. If you have a complete filter schedule or spreadsheet, Airex can review the entire list rather than requiring each filter to be submitted individually. Photos and existing filter labels can also be helpful when specifications are unclear.

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