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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →If you are looking for the best ozone generator air purifier for a fresher, healthier home, the most useful answer is this: an ozone generator is usually not the best air purifier for an occupied house. For everyday indoor air quality, a properly sized HEPA room purifier, activated carbon for odors and gases, a well-designed HVAC filter upgrade, ventilation, moisture control, and source removal are the safer and more reliable choices.
Ozone generators intentionally produce ozone. That is the same gas that can irritate the lungs at relatively low levels. The EPA has stated that ozone can be harmful whether it is pure or mixed with other chemicals, and that exposure can cause chest pain, coughing, shortness of breath, and throat irritation. EPA guidance also says ozone levels that stay within public-health standards are generally ineffective at controlling many indoor pollutants, including many odor-causing chemicals and biological pollutants.
That does not mean ozone is never used. On restoration jobs, trained remediation contractors may use ozone or other oxidizing treatments in very specific vacant-space odor work, usually after cleaning, demolition, or material removal has already addressed the cause. That is not the same thing as running a machine in a bedroom, nursery, living room, or occupied basement and calling it healthy air.
On our job sites, we treat indoor air problems as building problems first. A smoke smell may be residue in drywall, trim, ductwork, or insulation. A musty smell may be a crawlspace, grading, bath fan, roof leak, or humidity problem. Cooking odor may be a weak range hood. Sewer odor may be a plumbing defect. A purifier can help, but it cannot repair the building.
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#1 Best Overall
- WHY CHOOSE AHAM VERIFIDE AIR PURIFIERS: AHAM (Association of Home Appliance Manufacturers) is an ANSI-accredited organization that sets strict standards for appliance performance. Air purifiers with the AHAM VERIFIDE seal have been independently tested for air cleaning performance and energy efficiency. When you choose an AHAM certified air purifier, you're choosing a product trusted for reliable and effective indoor air quality improvement
- HIGH-PERFORMANCE AIR PURIFICATION: A powerful 56W high-torque motor and 143 CFM CADR delivers fast, effective cleaning. The Levoit Original Filter is HEPA-grade while operating in Sleep Mode (Based on IEST RP C001.7). Ideal for home, bedroom, or office
- AHAM VERIFIDE, PROVEN PERFORMANCE: AHAM VERIFIDE with a CADR (Clean Air Delivery Rate) rating of 143 CFM for smoke, 153 CFM for dust, and 167 CFM for pollen—refreshing air in a 222 ft² room 4.8 times per hour and a 1,073 ft² room once per hour
- GENUINE REPLACEMENT FILTERS: For the best performance and longest lifespan, use official Levoit filters designed specifically for Levoit air purifiers. Levoit replacement filters ensure the best fit and high-efficiency filtration, while off-brand filters may be unreliable and may damage your Levoit air purifier
- FIND COMFORT: Our filter has strong filtration performance of fine particles. 99.97% filtration efficiency for 0.1 to 0.3μm airborne particulates, including pollen, dust, and animal dander allergens. Tested by an independent lab
Quick Verdict: What to Buy Instead of an Ozone Generator
For an occupied home, the best air-cleaning setup usually looks like this:
- For dust, pollen, fine particles, wildfire smoke, and pet dander: use a portable HEPA air cleaner sized by CADR for the room.
- For odors and some gases: use meaningful activated carbon, not just a thin carbon-colored prefilter.
- For whole-home particle reduction: upgrade the HVAC filtration to a properly fitted media cabinet or MERV 13-equivalent filter only after checking airflow and static pressure.
- For bathrooms, kitchens, crawlspaces, and basements: fix ventilation, humidity, leaks, and source contamination before spending money on machines.
- For serious smoke, mold, sewage, or chemical odors: hire a qualified remediation or construction professional to find and remove the source.
Portable ozone generators are widely sold for about $40 to $300, and higher-output commercial units cost more. The low price is tempting, but output ratings such as milligrams per hour and broad square-foot claims are not health-based sizing guidance. A machine being available online or at a big-box store does not make it appropriate for occupied use.
Why Ozone Generators Are a Poor Everyday Air Purifier
Ozone is a reactive gas. That reactivity is why ozone machines are marketed for odor removal, but it is also why they create health and material concerns inside homes. Ozone can irritate airways and can worsen asthma symptoms. The Mayo Clinic advises that ozone-generating air purifiers can worsen asthma, and the American Lung Association recommends avoiding devices that produce ozone.
The technical problem is simple: if the ozone concentration is kept low enough to protect people, it is generally too low to reliably remove many indoor pollutants. If the ozone concentration is raised high enough to oxidize stubborn odors, the space should not be occupied. That is the dividing line many product listings and ranking pages blur.
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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteEPA references several exposure limits that give useful context. FDA’s ozone output limit for indoor medical devices is 0.05 ppm. OSHA’s 8-hour worker exposure limit is 0.10 ppm. NIOSH recommends a 0.10 ppm ceiling limit. California’s air-cleaner regulation requires covered indoor air cleaning devices sold in the state to meet an ozone emission concentration limit of 0.050 ppm, or 50 ppb, and appear on CARB’s certified device list where applicable.
For homeowners, California’s CARB certified device list is a practical safety screen even outside California. CARB strongly advises against using ozone generators at home and recommends they not be used except for approved industrial purposes where harmful exposure is prevented.
Air Cleaning Options Compared
The right equipment depends on what you are trying to remove. Particles, gases, odors, humidity, and biological contamination are different problems. A good plan may use more than one approach.
| Option | Best For | Weak Spots | Occupied-Use Safety | Typical 2026 Cost |
|---|---|---|---|---|
| Portable HEPA air purifier | Dust, pollen, smoke particles, pet dander, fine particles | Does not fix moisture, leaks, sewer gas, or many gases | Good when properly maintained | $80-$700; filters often $25-$150/year per unit |
| activated-carbon purifier | Some odors, VOCs, cooking smells, smoke gases | Thin carbon prefilters saturate quickly | Good if it does not generate ozone | Varies; heavier carbon units cost more and need periodic replacement |
| Whole-home media filter | Whole-house particle reduction through HVAC system | Can reduce airflow if poorly selected or installed | Good when HVAC static pressure is verified | About $400-$2,000+ installed; many basic systems $1,000-$1,800 |
| Whole-home HEPA or bypass filtration | Higher-performance central filtration | Needs duct modifications, balancing, and space near air handler | Good when professionally designed | Commonly $1,000-$4,000 installed |
| UV-C in ductwork | Coil surface treatment and some microbial control at the air handler | Not a primary dust or odor solution | Good when shielded and installed correctly | Often part of a broader HVAC IAQ project |
| Ionizer or electrostatic cleaner | Some particle reduction depending on design | May produce ozone; performance varies | Use only listed low-ozone certified devices | Varies widely |
| Ozone generator | Vacant-space odor treatment by trained pros in limited cases | Unsafe for occupied use; does not correct source problems | Not recommended for occupied homes | $40-$300 for many portable units; professional work varies widely |
How to Size a Portable HEPA Air Purifier
For room air cleaners, do not buy by vague square-foot claims alone. Look for CADR, especially smoke CADR. CADR stands for Clean Air Delivery Rate, and higher CADR means faster particle removal for a larger room.
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Rank #2
- Effortless Operation: Simplified control panel with intuitive design makes it easy to operate. No complicated setup—just one tap, and you're on your way to cleaner air, saving time and letting you relax with ease
- Compact Yet Powerful: Covers up to 1,076 ft² while maintaining a compact size of just 6.69 x 6.69 x 9.84 inches. Its small frame makes placement a breeze—whether on your desk or in a corner, it's ready to work hard wherever you need it (Laboratory Tested: Our air purifier efficiently cleans 250 ft² every 15 minutes, covering up to 1,076 ft² per hour)
- 360° Airflow & High Efficiency Filtration: The elegantly engineered 360° surround air intake, coupled with the sophisticated a triple-layer filtration system, meticulously captures an astounding 99.97% of airborne pollutants, transforming your living space into a sanctuary of purity and vitality
- Quiet with Essential Oil Option: Operates as quietly as 22dB, perfect for undisturbed sleep. The built-in essential oil tray lets you add 3–5 drops to infuse your space with soothing scents while enjoying purified air
- Fully Certified: Backed by DOE, ETL, FCC, CARB, CE, and ROHS certifications, our air purifier meets the highest standards for performance, giving you peace of mind with every use
A common AHAM sizing rule is to choose a smoke CADR at least two-thirds of the room’s square footage, assuming an 8-foot ceiling. For example, a 300-square-foot bedroom should have a smoke CADR of about 200 or higher. A 450-square-foot family room should be closer to 300 CADR. If the ceiling is 10 feet instead of 8 feet, or if the room is open to a hallway, kitchen, or stairwell, step up in size.
Use more capacity for wildfire smoke, open floor plans, pets, high dust loads, or a room where people spend many hours. Running a larger unit on a lower fan speed is often quieter and more comfortable than forcing a small unit to run on high all day.
ENERGY STAR certified room air cleaners are worth prioritizing because they are more than 50% more energy efficient than standard models. ENERGY STAR estimates they can save about 211 kWh per year, or roughly $18 to $40 per year depending on size and electricity cost. That matters because a useful purifier may run 12 to 24 hours per day during allergy season, smoke events, or remodeling cleanup.
Odor Problems: Filter, Fix, or Remove?
Odor complaints are where many homeowners get pulled toward ozone machines. The better approach is to identify the odor source first.
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Smoke residue sticks to drywall, paint, trim, cabinets, insulation, carpet, and duct interiors. A purifier may reduce airborne particles, but it will not remove residue embedded in porous materials. In fire or tobacco-smoke work, the real sequence is cleaning, sealing, removing contaminated materials where needed, HVAC cleaning or replacement decisions, and then filtration.
Musty Odor
A musty smell is often a moisture problem. Common causes include a damp crawlspace, poor grading, missing vapor barrier, foundation seepage, oversized or poorly controlled HVAC, unvented bath fans, roof leaks, or wet insulation. The fix may be bath fan replacement, duct routing to the exterior, crawlspace encapsulation, dehumidification, waterproofing, drainage correction, or selective demolition.
Pet Odor
Pet odor can be surface-level, but it can also be in carpet pad, subfloor, baseboards, drywall, or HVAC returns. Replacing carpet without sealing or replacing contaminated subfloor can leave the smell behind.
Sewer or Combustion Odor
Sewer gas is not an air-purifier problem. It can come from a dry trap, failed wax ring, cracked vent line, bad ejector pit seal, or drain defect. Combustion odor can involve backdrafting, appliance failure, or carbon monoxide risk. Those situations need diagnosis, not deodorizing.
Rank #3
- 𝐇𝐢𝐠𝐡𝐞𝐫 𝐀𝐢𝐫 𝐈𝐧𝐭𝐚𝐤𝐞 & 𝐋𝐚𝐫𝐠𝐞𝐫 𝐂𝐨𝐯𝐞𝐫𝐚𝐠𝐞 𝐟𝐨𝐫 𝐏𝐞𝐭 𝐋𝐨𝐯𝐞𝐫𝐬: This air purifier for home pets is designed with a larger front air inlet and wider dual-side air inlet, which can pull air from multiple sides and trap airborne pet hairs and odors more easily. Engineered to tackle the wildfire smoke, floating ash, and heavy smog, this high-performance air purifier creates a safe haven indoors, keeping your indoor air fresh during severe air quality alerts
- 𝐒𝐦𝐚𝐫𝐭 𝐏𝐌𝟐.𝟓 𝐀𝐐𝐈 𝐃𝐢𝐬𝐩𝐥𝐚𝐲 & 𝐀𝐮𝐭𝐨 𝐌𝐨𝐝𝐞: Built-in high-precision PM2.5 air quality sensor, real-time monitoring and digital display of indoor air quality. In Auto Mode, the purifier automatically ramps up to higher speed the moment it detects incoming wildfire smoke or household odors, ensuring no-hassle, round-the-clock purification.
- 𝐖𝐚𝐬𝐡𝐚𝐛𝐥𝐞 𝐏𝐫𝐞-𝐅𝐢𝐥𝐭𝐞𝐫 & 𝟑-𝐒𝐭𝐚𝐠𝐞 𝐃𝐞𝐬𝐢𝐠𝐧: Equipped with a high-efficiency 3-stage filtration system, the air cleaner can capture micro-sized airborne particles, including harmful PM2.5 particulates, dusty combustion ash, seasonal pollen, and pet dander. Cleaning the pre-filter helps save your daily replacement cost and extend the life of the HEPA filter. More activated carbon pellets help absorb unpleasant odors
- 𝟒 𝐒𝐩𝐞𝐞𝐝𝐬 𝐚𝐧𝐝 𝐓𝐢𝐦𝐞𝐫𝐬 & 𝐄𝐧𝐞𝐫𝐠𝐲-𝐒𝐚𝐯𝐢𝐧𝐠: The room air purifier has 4 adjustable fan speeds. You can choose the fan speed according to the air quality. The higher the wind speed, the faster the purification speed. When you are out or resting, you can set the air purifier to automatically shut off after 2/4/6/8 hours to reduce energy costs. Running at maximum wind speed for 24 hours only consumes 0.63 kW·h of electricity
- 𝐐𝐮𝐢𝐞𝐭 𝟐𝟎𝐝𝐁 𝐒𝐥𝐞𝐞𝐩 𝐌𝐨𝐝𝐞 𝐟𝐨𝐫 𝐋𝐢𝐠𝐡𝐭 𝐒𝐥𝐞𝐞𝐩𝐞𝐫𝐬: Choose our quiet air purifier for bedroom. Noise is as low as 20dB in sleep mode. Low noise, low speed and no lights make it perfect for a good night's sleep. Even light-sleeping babies or pets can enjoy fresh and clean air on quiet nights
HVAC Filtration: Better Air Without Choking the System
For central HVAC systems, we often recommend a better filter cabinet rather than simply forcing a dense 1-inch filter into an old return grille. The reason is pressure drop. A higher-efficiency filter can restrict airflow if the system does not have enough filter surface area.
MERV 13 or equivalent filtration can be a strong upgrade for particles when the equipment can handle it. But the contractor should measure total external static pressure before and after the change. If static pressure is already high, adding a restrictive filter can reduce airflow, increase noise, stress the blower, reduce comfort, and contribute to coil or furnace problems.
A deeper 4-inch or 5-inch media cabinet often gives better filtration with less resistance because it has more surface area. Installed costs commonly run about $400 to $2,000 or more, with many straightforward residential media cleaner projects around $1,000 to $1,800 depending on brand, cabinet size, access, sheet-metal adaptation, and the air handler location.
Whole-home HEPA or bypass filtration can run about $1,000 to $4,000 installed. Costs rise when the job needs bypass ducts, electrical work, airflow balancing, tight attic or crawlspace access, or modifications to older ductwork. Broad whole-home air purifier project data in 2026 ranges from about $59 for very simple filter-only work to $12,000 for advanced or complex systems, with a national average around $2,610. Permit allowances may be about $250 to $400, and HVAC labor commonly falls around $100 to $250 per hour.
When an Ozone Generator May Be Used
Ozone belongs in a narrow category: controlled, vacant-space remediation by trained people who understand exposure risk, containment, dwell time, ventilation, and re-entry. Even then, it should not be the first step. Cleaning and source removal usually do most of the real work.
A professional may consider ozone for stubborn odor treatment after smoke residue cleaning, after removal of contaminated porous materials, or after other remediation steps. The space should be unoccupied. People, pets, and plants should be removed. The treated area should be isolated. The contractor should follow manufacturer instructions, applicable regulations, and a re-entry plan based on ventilation and safety.
Homeowners who already own an ozone generator should read all manufacturer warnings and avoid using it in occupied areas. Do not run it in a bedroom while sleeping. Do not run it around children, older adults, pets, or anyone with asthma, COPD, or respiratory sensitivity. After any treatment, the area needs thorough ventilation before re-entry. In many cases, hiring a remediation professional is the safer choice.
DIY vs. Hiring a Pro
Reasonable DIY Projects
Homeowners can often handle portable HEPA purifier selection, filter replacement, basic cleaning, humidity monitoring, and simple source control. A $15 to $40 digital hygrometer can tell you whether indoor humidity is staying in a reasonable range. Many homes are more comfortable when indoor relative humidity is kept around 30% to 50%, depending on climate and season.
Replacing a standard return filter is also DIY if you use the correct size and do not jump to an overly restrictive filter. Check the filter monthly at first. In dusty homes, during remodeling, or with pets, replacement may be needed faster than the package suggests.
Rank #4
- Air Quality Monitoring: This air purifier is designed with a built-in PM2.5 sensor and real-time display, eliminating the need for guesswork about air quality. In auto mode, when it detects a decline in air quality, the purifier with the indicator changing to green, blue, yellow or red, and the fan accelerating to purify the air more efficiently.
- Remarkable Filtration: Featuring an advanced filtration system, the air purifier effectively removes airborne particles (such as dust, pollen, pet dander, and smoke ). When activated, this air cleaner can refresh the atmosphere in a space up to 2400 sq ft / 223 m² every 30 minutes, ensuring you enjoy a fresh and comfortable air quality throughout the day in your home or office. (Note: For significant amounts of pet hair on floors or fabric surfaces, we recommend use other cleaning products.)
- 3-Stage Advanced Filtration: Our air filter combines a high-efficiency purification filter with 3 layers to can effectively filter out the impurities in the air. This high-performance system delivers thorough air purification, creating a healthier living environment for you and your loved one. (Note: The filter needs to be replaced every 3 to 6 months, and must not be cleaned with water or other liquids.)
Call a Pro When the Building Is Involved
Bring in a professional when odors persist after cleaning, when there is visible mold, when humidity stays high, when insulation or drywall is wet, when the crawlspace smells musty, when ducts are damaged, or when HVAC airflow changes after a filter upgrade.
Construction-related IAQ fixes may include bath fan upgrades, kitchen ventilation, duct sealing, crawlspace encapsulation, basement waterproofing, roof or flashing repair, material removal, subfloor sealing, HVAC cabinet upgrades, and commissioning airflow after changes. Those are not purifier purchases; they are building corrections.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Safety and Permit Notes
In-duct air cleaners, UV-C systems, bypass HEPA units, and electrical accessories may trigger permit requirements depending on the jurisdiction and scope. If a contractor is adding electrical, altering ductwork, modifying the air handler, or installing a hardwired device, ask whether mechanical or electrical permits are required.
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California has especially clear rules for indoor air-cleaning devices. Covered devices sold in the state must meet the 0.050 ppm ozone emission concentration limit and appear on CARB’s certified list where applicable. Even if you do not live in California, checking CARB certification is a useful way to avoid high-ozone equipment marketed as an air purifier.
Also be cautious with words like ionic, plasma, active oxygen, energized particles, and odor oxidizer. Some devices in those categories may emit ozone. For an occupied home, choose equipment that is transparent about ozone emissions and is certified by a credible program.
A Practical Buying Plan for a Fresher Home
Start with the rooms that matter most. For many families, that means bedrooms first, then the main living area. Buy a HEPA purifier with smoke CADR sized to the room, choose ENERGY STAR when possible, and budget for replacement filters. A realistic starting budget is $150 to $400 per important room, though high-CADR units can cost $500 to $700.
If odor is the main complaint, add carbon capacity and investigate the source. A thin carbon prefilter may help with light nuisance odors, but it will not handle heavy smoke, solvents, sewer gas, mold, or chronic moisture. For serious odors, put money toward diagnosis before buying multiple machines.
For the HVAC system, ask an HVAC contractor to evaluate filter size, return air capacity, blower capability, and total external static pressure. If the system can support it, a larger media cabinet with a quality filter is often a better long-term investment than a stack of restrictive 1-inch filters.
Best Value
- Cleaner Air In Minutes: Purivortex is proven to filter common pollutants from your home’s air. This air purifier purifies rooms up to 880 ft² in one hour. It can purify a 215 ft² room in about 15 minutes, giving you noticeably fresher air in a short time. Breathe clean, crisp air and feel the difference in your space. (*Tested in an ISO 17025 certified laboratory under typical residential room ventilation conditions.)
- Breathe Easier with 99.97% Filtration: Purivortex HEPA air purifiers for home feature a powerful 3-layer filtration system — a pre-filter, HEPA filter, and activated carbon—that filter up to 99.97% of pollutants, including dust, smoke, pollen, pet dander, and VOCs. Purivortex air filters filter out particles as small as 0.1 microns, while the carbon filter helps reduce light household odors from smoke, pets, and cooking.**(**Independently tested in an ISO 17025 laboratory.)
- Bigger Filter, Better Purification: Purivortex goes beyond the standard—while most purifiers of this size use a 4 inch filter, Purivortex air filters stand tall at 6 inches. That’s nearly 1.5× larger, pulling in more air and delivering cleaner results, faster. Filter made of FSC-Certified paper, sourced from responsibly managed forests, ensuring both high performance and care for the environment.
- Backed by Science, Trusted by Standards: Purivortex air purifiers are rigorously tested to deliver powerful purification performance. Certified by ETL, FCC, and CARB for safety and energy efficiency, and verified through independent SGS laboratory testing to prove their effectiveness. With Purivortex, you get science-backed confidence in every breath.
- 2 Years of Guaranteed Confidence: Purivortex stands behind the quality and performance of every purifier, which is why Purivortex air purifiers come with a full 2-year warranty. More than 500,000 families have already chosen Purivortex for cleaner, fresher air. With added convenience features such as 3 timer settings (4H/8H/12H), 4 fan modes (Sleep/Low/Med/High), and 4 night light modes (Multicolor, Blue, Green, Purple), Purivortex delivers comfort tailored to your lifestyle.
For remodeling projects, plan IAQ into the work. Use dust containment, negative air where appropriate, HEPA vacuums, low-VOC materials, proper bath and kitchen exhaust, duct protection, and post-construction filter changes. A cleaner build process reduces the load that your air cleaners have to handle later.
Bottom Line
The best ozone generator air purifier for a healthier occupied home is usually no ozone generator at all. Use HEPA for particles, activated carbon for gases and odors, HVAC filtration that respects airflow, and construction fixes that remove the source of contamination.
Ozone may have a limited role in professional, vacant-space odor remediation, but it is not a healthy everyday air-cleaning strategy for bedrooms, living rooms, nurseries, or occupied basements. If your home smells stale, smoky, musty, or chemical, the durable fix is to diagnose the building, remove the source, ventilate correctly, control moisture, and then filter the air with equipment sized for the job.
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Are ozone generators safe to use at home?
They are not recommended for occupied homes. Ozone can irritate the lungs and may worsen asthma or other respiratory conditions. If ozone is used at all, it should be limited to controlled, vacant-space remediation by trained professionals.
What is better than an ozone generator for indoor air?
For occupied homes, use a properly sized HEPA air purifier for particles, activated carbon for odors and gases, and HVAC filtration upgrades that are checked for airflow and static pressure.
How much does a good home air purifier cost in 2026?
Portable HEPA room purifiers commonly cost about $80 to $700, with replacement filters often adding $25 to $150 per year per unit. Whole-home systems commonly range from about $400 to $4,000 installed, with complex projects costing more.
Can an ozone generator remove smoke smell?
Ozone may reduce some smoke odor in a vacant, professionally controlled setting, but it does not replace cleaning or removal of smoke-contaminated drywall, carpet, insulation, cabinets, trim, or duct contamination.
What CADR do I need for a bedroom?
A common rule is smoke CADR equal to at least two-thirds of the room’s square footage for an 8-foot ceiling. A 300-square-foot bedroom should have a smoke CADR of about 200 or higher.
Should I install a MERV 13 filter in my HVAC system?
MERV 13 can be a good particle-filtration upgrade if your system can handle the pressure drop. Have a contractor check total external static pressure and consider a deeper media cabinet instead of forcing a dense 1-inch filter into an old return.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
