Training Example: Filtrete (3M) – Review the Data, Give Your Score & Compare to the Real AI Evaluation

Industry Context — Common BS Fingerprints in Home Services (Plumbing, Roofing, HVAC, Electrical)
Generic Claims: no job too small, fast and reliable, honest and affordable, your local trusted tradesman…
Red Flags: gas work offered without visible Gas Safe registration, electrical work without Part P certification, no insurance information, pricing guarantees without site survey…
Semantic Drift Patterns: claims specialist but offers every trade under one brand, homepage says Gas Safe but registration not verifiable, claims commercial capability but portfolio is residential only, emergency service claims but no out-of-hours contact mechanism…
Proof Expectations: Gas Safe registration number (for gas work), NICEIC or NAPIT registration (for electrical work), public liability insurance details, verifiable Checkatrade or TrustMark profile…

Filtrete (3M)

(https://filtrete.com) 📸 Data Snapshot: May 30, 2026

Analyze the raw signals below. How would a machine score this business’s credibility?

Here are the exact signals captured from up to six pages of the site — the same raw inputs the evaluation engine analyzed. They are grouped by signal type so you can weigh each the way the machine does.

🏗️ Semantic Structure — heading hierarchy & page identity (Info Density · Commodity Fingerprint)
HOMEPAGE Filtrete™ Home Filtration Products (https://filtrete.com)
Title

Filtrete™ Home Filtration Products

Meta

Filtrete™ Brand Filters have exclusive Filtrete™ Brand 3-in-1 technology from 3M that pulls in and traps unwanted particles while letting cleaner air flow through to help your home stay cleaner, fresher, healthier. Change your filter today.

H1 Same Trusted Performance, Now in a Fresh New Look
H2 Reasons to choose Filtrete™
H2 Let's find a personalized Filtrete™ Brand Solution.
H3 Tips for Better Air
H3 Why Does My New House Smell??
H3 True or False: Cold Weather Edition
H3 Cleaning Checklist for the Five Senses
H3 How to Handle Outdoor Gear for Better Indoor Air Quality
H3 8 Homeowner Tips to Improve Indoor Air Quality
H3 5 Bugs You Might Find in Your Home—and How to Banish Them
H3 8 Holiday Hosting Hacks for Better Air Quality
H3 6 Winter Cooking Tips For Better Indoor Air Quality
NAV_REPEATED_BODY MPR Rating: The Key to Cleaner Air at Home | 3M (https://filtrete.com/3M/en_US/filtrete/about-us/cleaner-air/)
Title

MPR Rating: The Key to Cleaner Air at Home | 3M

Meta

Filtrete™ Air Filters are the only air filters with both MERV (the industry standard) and MPR (specially engineered to measure microparticles) ratings. What does that actually mean? Our filters capture more particles than the industry standard without compromising airflow.

H1 Tough on Microparticles
H2 How to Choose the Right MPR Rating
H3 Filtrete™ Filters capture more microscopic particles than required by the MERV Standard.
H3 Why Microparticle Capture Matters
NAV_REPEATED_BODY #1 Recommended for a Reason | 3M United States (https://filtrete.com/3M/en_US/filtrete/about-us/number-one-recommended/)
Title

#1 Recommended for a Reason | 3M United States

Meta

Filtrete™ is the No. 1 most recommended brand for HVAC air filters* — and it’s no surprise why. With a legacy of innovation and performance, we’ve earned the trust of homes and businesses across the country.

H1 #1 Recommended Brand by Dads (and Everyone Else)
H2 Our rave reviews
H2 Let's find a personalized Filtrete™ Brand Solution.
H2 Discover the Filtrete™ Brand Advantage
H2 FAQs
NAV_REPEATED_BODY Why Reliable Airflow Matters (https://filtrete.com/3M/en_US/filtrete/about-us/reliable-air-flow/)
Title

Why Reliable Airflow Matters

Meta

It’s simple: Reliable airflow is essential for cleaner indoor air and keeping your HVAC unit happy.

H1 Why Reliable Airflow Matters
H2 It’s simple: Reliable airflow is essential for cleaner indoor air and keeping your HVAC unit happy. Let us explain:
H2 Quality Materials Matter
H2 The best thing you can do for reliable air flow
H2 FAQs About Airflow
H3 Cleaner indoor air:
H3 Easy on your HVAC:
📝 The Narrative — clean text per page (Info Density · Semantic Coherence)
HOMEPAGE (https://filtrete.com) Filtrete™ Home Filtration Products
[IMG: Three Filtrete Air Filters in green, red, and blue packaging, “#1 Recommended* Air Filter Brand” below them, on a blue background.]

[H1]
Same Trusted Performance, Now in a Fresh New Look

Shop Air Filters

[H2]
Reasons to choose Filtrete™

[IMG: A family sitting on the floor in a living room smiling, doing crafts together.]

#1 Recommended for a Reason

Filtrete™ is the No. 1 most recommended brand for HVAC air filters. Don’t just take our word for it, explore the positive experiences shared by our satisfied customers.

Read the Reviews

[IMG: A man and cat laying on a sofa, the cat is on the left with particles in the air, a Filtrete filter is in the middle, and on the right the man is smiling with less particles in the air.]

Cleaner Air

MPR was created to exceed industry standard MERV, to capture more of the smallest microparticles.

Learn More

[IMG: A close up of the filter media of a Filtrete Air Filter.]

Reliable Airflow

Reliable airflow is essential for cleaner air and keeping your HVAC unit happy.

Learn More

[IMG: A wave of overlapping Filtrete filters on a dark blue background.]

[H2]
Let's find a personalized Filtrete™ Brand Solution.

GET STARTED

[H3]
Tips for Better Air

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[IMG: When something in your new house smells off, it could be coming from airborne particles. Here’s how particles from mildew, candle soot, cooking fumes and more can smell, and how to get rid of odors.]

June 24, 2022

[H3]
Why Does My New House Smell??

That smell you just can’t place might be coming from airborne particles in your new house.

2022-06-175

New house smell,Musty smell in house,Stale smell in house,Smoke smell in house
Why Does My New House Smell??

[IMG: Test your cold weather knowledge and find out how to keep your home comfortable when temperatures drop. Little boy watching snow fall out a window.]

January 20, 2023

[H3]
True or False: Cold Weather Edition

Test your cold weather knowledge and find out how to keep your home comfortable when temperatures drop.

2023-01-20

Weather & Environment
cold weather,Indoor air quality
True or False: Cold Weather Edition

[IMG: Use your five senses to help determine what to clean next. A woman vacuuming a living room.]

January 20, 2023

[H3]
Cleaning Checklist for the Five Senses

Use your five senses to help determine what to clean next.

2023-01-20

A Clean Home
cold weather,Indoor air quality
Cleaning Checklist for the Five Senses

[IMG: A family setting up a tent a the backyard.]

April 05, 2023

[H3]
How to Handle Outdoor Gear for Better Indoor Air Quality

Whether you’re hiking, camping or grilling at home, these seven tips will keep your indoor air fresh this spring.

2023-04-95

A Clean Home
Outdoor gear,Indoor air quality,Indoor air
How to Handle Outdoor Gear for Better Indoor Air Quality

[IMG: Learn how normal home wear and tear can impact your indoor air quality.]

October 12, 2023

[H3]
8 Homeowner Tips to Improve Indoor Air Quality

Complete these tasks regularly for fresher, cleaner indoor air throughout your home.

2023-10-285

A Clean Home
homeowner tips,improve indoor air quality,indoor air quality,air quality
8 Homeowner Tips to Improve Indoor Air Quality

[IMG: Five bugs you might find in your home, plus tips to get rid of them. Two people making a bed together.]

April 15, 2024

[H3]
5 Bugs You Might Find in Your Home—and How to Banish Them

Bugs in the house is an unfortunate reality. Luckily, there are plenty of ways to keep ants, spiders, roaches and other unwanted pests at bay.

2024-04-106

Healthly Home,A Clean Home,New Home
house bugs,bugs in the house
5 Bugs You Might Find in Your Home—and How to Banish Them

[IMG: A family having a group hug together. Eight tips to help improve your indoor air quality quickly.]

October 28, 2024

[H3]
8 Holiday Hosting Hacks for Better Air Quality

Fast, easy ways to refresh your home for holiday guests.

2024-10-302

A Clean Home,Entertainment & Cooking
better air quality,hosting hacks,holiday hacks,holiday hosting,holiday hosting hack,air quality
8 Holiday Hosting Hacks for Better Air Quality

[IMG: A mother and daughter baking in the kitchen together. Use these tips to help maintain good indoor air quality in the kitchen.]

October 28, 2024

[H3]
6 Winter Cooking Tips For Better Indoor Air Quality

From holiday feasts to bake-offs, winter is a busy cooking season. Here’s how to maintain good air quality as you whip up your favorite treats.

2024-10-302

A Clean Home,Entertainment & Cooking
cooking tips,winter cooking,winter cooking tips,better indoor air quality,indoor air quality,indoor air
6 Winter Cooking Tips For Better Indoor Air Quality

LOAD MORE
13167 chars
SUB-PAGE (https://filtrete.com/3M/en_US/filtrete/about-us/cleaner-air/) MPR Rating: The Key to Cleaner Air at Home | 3M
United States
Filtrete™ Home Filtration Products
About Us
MPR Rating: The Key to Cleaner Air at Home

[IMG: A man and cat laying on a sofa, the cat is on the left with particles in the air, a Filtrete filter is in the middle, and on the right the man is smiling with less particles in the air.]

[H1]
Tough on Microparticles

[IMG: Close up of Filtrete filter media with text “Captures up to 2x more microparticles vs MERV alone*”]

Meet your new partner in air quality.

Filtrete™ Air Filters are the only air filters with both MERV (the industry standard) and MPR (specially engineered to measure microparticles) ratings. What does that actually mean? Our filters capture more particles than the industry standard without compromising airflow. You’ll get cleaner air without overworking your HVAC.

What is MPR?

When it comes to air filtration, remember this one acronym: MPR (Microparticle Performance Rating). These three little letters zero in on those sneaky microparticles that could worsen your indoor air quality. Unlike MERV (Minimum Efficiency Reporting Value), which simply sets the baseline for performance, the MPR rating system goes above and beyond to measure the capture of microparticles as small as 0.3 microns.

[IMG: two filters overlapping, the front filter with text “MERV+MPR: Rated for microparticle capture” the filter behind “MERV: Rated for minimum efficiency”]

[H2]
How to Choose the Right MPR Rating

Every home has its quirks, and that’s especially true when it comes to air quality needs. Whether it’s allergens, pets or the local pollen forecast, we’re here to help you find the perfect Filtrete™ Air Filter that suits your lifestyle.

[H3]
Filtrete™ Filters capture more microscopic particles than required by the MERV Standard.

Check out how MPR-rated Filtrete™ Filters outperform MERV standards.

700 MPR - Dust, Pollen & Pet Dander

Filtrete™ 700 MPR | MERV 8 captures more mircoparticles than the MERV standard such as lint, pollen, dust, and pet dander.

[IMG: Filtrete™ 700 MPR | MERV 8 captures 25% more mircorparticles than the MERV standard such as lint, pollen, dust, and pet dander.]

1000 MPR - Allergen & Pet Dander

Filtrete™ 1000 MPR | MERV 10 captures 2x more mircoparticles than the MERV standard such as allergens and pet dander.

[IMG: Filtrete™ 1000 MPR | MERV 10 captures 2x more mircoparticles than the MERV standard such as allergens and pet dander.]

1500 MPR - Allergen, Bacteria & Virus

Filtrete™ 1500 MPR | MERV 12 captures 54% more mircoparticles than the MERV Standard such as allergens, bacteria & viruses.

[IMG: Filtrete™ 1500 MPR | MERV 12 captures 54% more mircoparticles than the MERV Standard such as allergens, bacteria & viruses.]

1900 MPR - Allergens, Bacteria, Viruses & Air Pollutants

Filtrete™ 1900 MPR | MERV 13 captures 24% more microparticles than the MERV standard such as allergens, bacteria, viruses & air pollutants.

[IMG: Filtrete™ 1900 MPR | MERV 13 captures 24% more microparticles than the MERV standard such as allergens, bacteria, viruses & air pollutants.]

2500 MPR - Premium Allergens, Bacteria, Viruses & Air Pollutants

Filtrete™ 2500 MPR | MERV 14 has more small particle capture than the MERV standard such as premium allergens, bacteria, viruses and pollutants.

[IMG: Filtrete™ 2500 MPR | MERV 14 has more small particle capture than the MERV standard such as premium allergens, bacteria, viruses and pollutants.]

[IMG: A man on his laptop sits next to his son working on homework, both are at a table with plants and decor behind them.]

[H3]
Why Microparticle Capture Matters

Dust, pollen, bacteria, viruses and smoke particles—just because you can’t see them doesn’t mean they’re not there, wreaking havoc on your indoor air quality. Think of your air filter as the superhero in the fight against these invisible troublemakers. Filtrete™ Air Filters harness the power of 3M Science to effectively capture and remove these unwanted particles from your air. Every MPR level not only filters out larger pollutants (like pollen and pet dander), but each level up targets more and more microparticles that could affect your home’s air quality.

*Filtrete MPR 1000 - 1200 capture 2x more small particles than MERV 11 requirement. Microscopic particles are 0.3-1.0 in size.
5346 chars
SUB-PAGE (https://filtrete.com/3M/en_US/filtrete/about-us/number-one-recommended/) #1 Recommended for a Reason | 3M United States
United States
Filtrete™ Home Filtration Products
About Us
#1 Recommended for a Reason

[IMG: A Family of four sitting on the floor in a living room smiling, doing crafts together.]

[H1]
#1 Recommended Brand by Dads (and Everyone Else)

Filtrete™ is the No. 1 most recommended brand for HVAC air filters* — and it’s no surprise why. With a legacy of innovation and performance, we’ve earned the trust of homes and businesses across the country.

[H2]
Our rave reviews

Still on the fence? Don’t just take our word for it, explore the positive experiences shared by our satisfied customers. It’s time to see the difference Filtrete™ makes in your home or business.

Cleaner Air

★★★★★
When changing the filter you can see it works really well at cleaning the air. —jcoleman41
★★★★★
I have been using this product for 5 years with excellent performance. —MD72
★★★★★
Best filter I have used for pollen blocking allergens and keeping the house clean. —TerryK

Quality

★★★★★
I have been using the Filtrete Ultimate filter since 2004 and found it to be the best for cleaning the air in my home. —Idaho
★★★★★
In our home, the Filtrete name has become synonymous with clean air and a superior product. —BhamGirl
★★★★★
Another advantage to a better quality filter is that there is less particle build-up in the air ducts which will require less air-duct cleaning and less stress on your A/C. —Mudbugz

Performance

★★★★★
This filter does a great job cleaning the air without bogging down the furnace by restricting air flow. —Meidego
★★★★★
I use 4 different sizes of these throughout the house & they all work great at keeping the indoor air quality at its best! —Wayne C
★★★★★
We have been using this product for a few years now and with an older home, a cat and a dog, the filter really does a good job in catching a lot of stuff and helping the air stay clean! —Malyssa910

HVAC Pro

★★★★★
I get compliments from my HVAC service guy every year for how clean it keeps my ducts. —JohnL
★★★★★
The technicians always remark on how clean the coils have remained. —rtw3608
★★★★★
The Tech noted that our unit was very clean inside and wanted to know as to the filters I used. —Terry

[IMG: A wave of overlapping Filtrete filters on a dark blue background.]

[H2]
Let's find a personalized Filtrete™ Brand Solution.

Get Started

[IMG: A woman sitting on the floor smiling at her phone, with a golden retriever in the background.]

[H2]
Discover the Filtrete™ Brand Advantage

Experience the difference that 30+ years of trusted performance brings to your home. Filtrete™ Filters are expertly designed to deliver cleaner, fresher indoor air, all while maintaining optimal airflow for your HVAC system.
Why settle for less when you can have the best? Upgrade your air quality today and enjoy the benefits of premium filtration — because your home deserves nothing less.
Maximize your comfort. Transform your indoor air. Choose Filtrete™ Air Filters.

EXPLORE CHANGE REMINDER OPTIONS

[H2]
FAQs

How often should I change my Filtrete™ Filter?
For top performance, replace 1” filters every three months and 4”+ filters every 12 months. If you have pets, smokers, ongoing construction or a continuously running fan, change your filter more often to keep your air cleaner.

Do high-efficiency filters really affect airflow?
Not with our filters! Our advanced technology balances superior filtration with smooth airflow, so your HVAC system stays efficient and happy. No overworked systems here.

What’s the difference between MPR and MERV?
An MPR rating and a MERV rating are similar, but not the same. MPR is our unique measurement that goes beyond industry-standard MERV ratings. It shows how well our filters capture the smallest particles for cleaner air. The higher the MPR number, the better the filter is at trapping tiny, invisible pollutants most MERV-rated filters miss. Think of it as an upgrade for your home’s air quality. MPR stands for Microparticle Performance Rating. MERV stands for Minimum Efficiency Reporting Value

Can Filtrete™ Filters help with allergies?
Yes! Our filters trap allergens like pollen, pet dander and dust mites, helping you breathe easier every day.

*Based on 2025 Sago US Brand Health Survey of Residential HVAC Air Filters
4879 chars
SUB-PAGE (https://filtrete.com/3M/en_US/filtrete/about-us/reliable-air-flow/) Why Reliable Airflow Matters
United States
Filtrete™ Home Filtration Products
About Us
Why Reliable Airflow Matters

[IMG: A family smiling cooking together in a kitchen, with bell peppers in a basket in the foreground]

[H1]
Why Reliable Airflow Matters

[H2]
It’s simple: Reliable airflow is essential for cleaner indoor air and keeping your HVAC unit happy. Let us explain:

[H3] Cleaner indoor air:
Optimal air flow allows filters to do what they’re meant to do: Capture airborne particles and deliver cleaner air for your space.
[H3] Easy on your HVAC:
Reliable air flow prevents strain on your HVAC system, reducing wear and extending its life. A happy HVAC leads to reduced energy usage and utility costs.
[H2] Quality Materials Matter

[IMG: Close up of the filter media texture of a Filtrete Air Filter.]

The Filtrete™ Brand takes pride in using high-quality materials, from crafting the filter fibers to perfecting the final product. “It allows us to innovate and develop every step of the way,” explained Kelsey Hei, Filtration and Indoor Air Quality Specialist. “We can ensure that we meet the quality standards at every checkpoint.”
With complete control over design and product, every detail is optimized for consistent, reliable performance. This precision is why Filtrete™ Filters are the trusted choice for cleaner air.
The principles of elector static charge are integral to Filtrete™ Filters, enabling them to attract and capture even the smallest airborne particles – think of allergens like pollen, pet dander and dust mite debris. Much like the statically charged balloon picking up small pieces of paper, this charge enhances the filter’s ability to trap airborne particles while keeping airflow smooth and uninterrupted. Every filter is engineered with the the principles of an electrostatic charge and surface area using pleats to best balance particle capture, airflow and necessary filter life.

Uncompromised Airflow

[IMG: On the left an image of a Filtrete 1900MPR Air Filter, on the right a diagram of an HVAC system with the filter installed.]

You may have heard that higher efficiency filters restrict airflow. It’s true that many brands have more restricted airflow with a higher MERV rating, but not all. Filtrete™ Air Filters have similar airflow across all MERV and MPR levels. Built using our trademark 3M Science, our design delivers both exceptional particle capture and fluid airflow, so you don’t have to compromise.
“Think of it like a brick wall. Most filters have to restrict more to get those particles captured,” Hei said. “But with us, we can balance efficiency and airflow because we own our process and innovation.”
To measure performance, we use two rating systems: the industry-standard Minimum Efficiency Reporting Value (MERV) and our own Microparticle Performance Rating (MPR). Higher MPR ratings mean better particle capture, ensuring your indoor air quality remains top-notch.

[IMG: Designed to measure the capture of more microscopic microparticles MERV: An industry standard for particle capture measurement.]

Remarkably, some of our higher-rated Filtrete™ Air Filters (with elevated MERV and MPR ratings) actually allow better airflow than lower-rated filters,” Hei said. With Filtrete™ Air Filters, high performance does not lead to reduced airflow, giving you clean air without overworking your HVAC system. With Filtrete™ Air Filters, you can truly have it all.

[IMG: “With Filtrete™ Air Filters, we can balance efficiency and airflow because we own the process and innovation.” - Kaisey Hai, Filtration and Indoor Air Quality Specialist at 3M]

[H2]
The best thing you can do for reliable air flow

Apart from choosing the right Filtrete™ Air Filter for your home, the best thing you can do to ensure continued optimal air flow is to change your air filter regularly. Unfortunately, your air filter can't replace itself, so you need to stay on schedule.
Neglecting your HVAC filter is like skipping oil changes for your car, and that is a recipe for disaster. A clogged air filter results in inadequate airflow, which can cause issues like frozen coils and overheated HVAC motors. Replacing your air filter proactively assures optimal air flow and HVAC performance. If you cook frequently, conduct home renovations, have pets or live in an area with poor quality, you'll want to change your air filter more often. Don't hesitate to check your air filter frequently, and replace it if it's visibly dirty for instant gratification. If you're questioning the size of your filter opening, pull out your trusty tape measure and check to find the correct filter size for your HVAC unit.
Watch one of our 3M experts demonstrate how to measure your filter slot opening.

[IMG: Filtrete MPR 1900 Air Filter in package]

Filtrete™ 1900 MPR (MERV 13) Air Filter Receives Top Airflow Performance Review

In May 2025, Wirecutter praised the performance of our MPR 1900 / MERV 13 Air Filter, naming it the top pick among air filter brands it tested against.
“Filtrete’s HVAC filters are widely available online and in stores, and they come in a huge range of sizes. We recommend the MPR 1900 Air Filter, which is rated MERV 13 – the highest level of filtration that can be used in most HVAC systems. Better filtration generally means a filter has a higher air resistance that can put a strain on HVAC equipment. Filtrete’s MPR 1900 Air Filter, however, have the lowest resistance we've seen among MERV 13 filters – even better than most lower MPR filters which don't capture fine particles nearly as well.”
Wirecutter is a trusted product review and recommendation service from the New York Times. Known for its rigorous testing and research, it provides in-depth, unbiased reviews to help customers make informed purchasing decisions across a wide range of categories.

[H2]
FAQs About Airflow

Do high-efficiency filters negatively affect airflow?
Not with Filtrete™ Air Filters! Our advanced design ensures clean air without overworking our HVAC system.

What makes Filtrete™ Air Filters different from other air filters?
Filtrete™ Filters Are designed to balance electrostatic charge and the surface area of the filter material, ensuring effective particle capture without compromising airflow. Even our higher MPR-rated filters maintain proper airflow while trapping the smallest particles. Plus, we provide clear performance metrics on our packaging so you can choose with confidence.

How can I ensure optimal airflow?
Replace your air filter regularly, and check that your filter is the correct size for your system. Here’s how.

How often should I change my air filter?
For top performance, replace 1” air filters every three months or sooner, and 4”+ filters every 12 months or sooner. If you have pets, smokers, have done home renovations, or are continuously running a fan, change your filter more often to keep cleaner indoor air.

[IMG: A wave of overlapping Filtrete filters on a dark blue background.]

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8180 chars
🛡️ Trust Signals — reviews, proof links, trust-theatre flag (Trust & Proof)
21Review mentions (all pages)
4External proof links (all pages)
PageReviewsProof links
/ (home) 1 1
/3M/en_US/filtrete/about-us/cleaner-air/ 7 1
/3M/en_US/filtrete/about-us/number-one-recommended/ 5 1
/3M/en_US/filtrete/about-us/reliable-air-flow/ 8 1
🔗 Identity & Technical Layer — schema JSON-LD: identity chains, entity gaps (Identity & Authority)
Homepage — no schema detected (entity gap)
/3M/en_US/filtrete/about-us/cleaner-air/ — no schema detected (entity gap)
/3M/en_US/filtrete/about-us/number-one-recommended/ — no schema detected (entity gap)
/3M/en_US/filtrete/about-us/reliable-air-flow/ — no schema detected (entity gap)

Your Diagnosis

Before revealing the machine’s verdict, predict the BS score for each signal. Higher = more BS (more fluff, less verifiable substance). Drag each slider, then submit to compare your judgment against the engine.

Information Density 0 / 30
Read the Narrative & headings: do hard facts (prices, dates, numbers) outweigh fluff power-words?
Semantic Coherence 0 / 20
Compare the homepage promise against the sub-page reality. Do they hold the same line?
Trust & Proof 0 / 20
Weigh review mentions against actual external proof links. Claims without verification = theatre.
Commodity Fingerprint 0 / 15
Check headings & narrative against the industry clichés in the setup above.
Identity & Authority 0 / 15
Inspect the schema: is there real Organization/Person identity with sameAs links, or gaps?
Your predicted BS score 0 / 100
💡 Stuck? Reveal the heuristic lens — how the deterministic page-auditor reads each signal (no AI, pure pattern rules)

These are the structural rules a local, deterministic auditor applies — the same lens you can use to judge each signal. They describe what to look for, not this company’s result.

Information Density

Classify each sentence as substantive or hollow. Grounding markers — numbers, currencies, dates, technical units, named entities — outweigh marketing adjectives. When fluff sits right next to hard evidence, the fluff is forgiven.

Semantic Alignment

Pull the main entities out of the H1, then check whether they actually recur through the body. A page that announces one thing and then talks about another drifts. Headings with no real sentences underneath read as pseudo-substance.

Trust & Proof

Count trust words (review, testimonial, rating, verified) against real outbound proof links (Google, Trustpilot, Clutch, G2, Yelp). Lots of trust language with zero verification links is trust theatre. Unlinked logo galleries count against it.

Commodity Fingerprint

Look at how much sentence length varies. Natural writing varies its rhythm; templated or mass-produced copy is statistically uniform. Very low variation reads as commodity content — unless unique named entities break the pattern.

Identity & Authority

Inspect the JSON-LD. Is there an Organization or Person schema, and does it carry sameAs links to real external profiles (LinkedIn, socials)? Missing schema or no identity declaration signals an anonymous entity.

Want to apply this lens yourself? The free BS Indicator Chrome extension runs these heuristic checks live on any page. Bear in mind it is a single-page, deterministic tool — it relies only on pattern rules for the page in front of it and does not perform the cross-page semantic correlation this audit uses, so its readout is a starting lens, not the full verdict.

B
BS Level
Home Services (Plumbing, Roofing, HVAC, Electrical)
54.3 Avg BS

Based on 222 businesses audited.

BS Detector

Home Services (Plumbing, Roofing, HVAC, Electrical) BS: Filtrete (3M) (filtrete.com)

https://filtrete.com 📍 Industry: Home Services (Plumbing, Roofing, HVAC, Electrical)
27 BS / 100

Filtrete demonstrates high technical substance, using proprietary metrics and 3M engineering data to out-muscle the generic marketing typically found in the HVAC space. The BS score is driven exclusively by technical implementation failures (missing schema) and a lack of outbound verification links rather than a lack of truth. It is a rare example of a site where the technical ‘Substance’ actually matches the brand ‘Signal.’

Info Density Power-words vs. Substance ratio.
7
23% BS
Semantic Coherence Homepage promise vs. Sub-page reality.
0
0% BS
Trust & Proof Verifiable evidence vs. Trust Theatre.
7
35% BS
Commodity Fingerprint Detection of industry clichés/templates.
3
20% BS
Identity & Authority Expert verifiability & Schema depth.
10
67% BS

Implement Organization and Product schema across all pages to provide machine-readable authority to the MPR ratings. Create a dedicated landing page or PDF link for the 2025 Sago US Brand Health Survey to provide a verifiable proof path for the #1 Recommended claim. Add Person schema for Kelsey Hei and link to her professional 3M bio or LinkedIn profile to close the authority gap. Replace generic imagery of families with technical diagrams illustrating the electrostatic charge principles mentioned in the text.

The site represents a leading product manufacturer in the HVAC and air filtration vertical. While the industry dictionary focuses on tradesmen, Filtrete provides the technical substance (filters) that supports these Home Services, effectively bridging the gap between product performance and system maintenance.

“The score of 27 is primarily driven by the Identity and Authority pillar (10/15) due to the total absence of structured data and the Trust and Proof pillar (7/20) for the lack of direct verification links. Information density is strong, and semantic coherence is perfect (0), preventing the score from entering the 'Moderate BS' range. This is a technically credible site with minor digital transparency gaps.”

Verified Analysis Date: May 30, 2026 © 1EuroSEO Independent Evaluator — Non-Sponsored Result