is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to As an affiliate, this website earns from qualifying purchases.

Chamber vacuum sealers are pretty heavy duty gadgets compared to their more counter friendly counterparts

However, if you are someone who enjoys cooking large quantities of food to eat throughout the week, enjoy frequent sous vide cooking, or regularly go out and hunt for your own meat to store and eat throughout the year, you can most certainly benefit from investing in a chamber vacuum sealer

Even so, chamber vacuum sealers are pretty pricey investments, therefore it is crucial that you do your research in deciding which device will work best for your vacuum seal needs before you dole out your hard earned cash. 

Examining the PolyScience 300 vs VacMaster 215 is a great place to start on your journey towards choosing the right chamber vacuum sealer investment for you. 

Below we have outlined all you will need to know about these products to make an informed decision about your next vacuum sealer purchase. 


PolyScience is a company that specializes in temperature control equipment for scientific laboratory use and commercial and home kitchen use.

Some of PolyScience Culinary’s kitchen products include things like immersion circulators, ultra-sonic emulsifiers, and (of course) vacuum packaging systems. 

In 2014, Breville Group Limited, an Australian company dedicated to the production and distribution of quality kitchen products, formed an alliance with PolyScience for the purposes of distributing PolyScience kitchen products both commercially and directly to consumers. 

This means that PolyScience Culinary products are some of the most reliable, scientifically backed technologies on the market combined with the marketing ingenuity of a reliable brand of traditional kitchen equipment. 

An excellent (and pretty wild) example of this conglomeration of scientific technology and cooking accessories is the rotary vacuum evaporation system produced by PolyScience. 

This funky looking gadget uses a vacuum pump to vaporize different liquids and allow any number of flavors to be distilled into “essences”. 

PolyScience is an innovative brand catering products to experimental culinary artists and scientists alike

And this bold take on food preparation tools is absolutely not overlooked in the brand’s chamber vacuum sealer. 

The PolyScience 300 Series Chamber Vacuum Sealer (view at Amazon) is the largest (and most heavy duty) home kitchen vacuum sealer that PolyScience offers. 

This sizable box is 18.5 inches tall, 14 inches wide, and 14.5 inches long.

The chamber’s dimensions are 13.8 inches long, 12 inches wide, and 4.3 inches tall. The entire device weighs a little over 50lbs. 

The dry piston pump that operates the machine is reliable and maintenance free, unlike oiled pumps which require consistent lubrication and regular maintenance. 

The PolyScience 300 is made of sleek stainless steel, giving it an easily integratable aesthetic as well as a durable exterior.

This machine runs on 120 volts of power and has an 11.5 inch long seal bar; however, the widest compatible vacuum seal bag or roll measures 12.2 inches. 

The interface of this machine is easy to use and consists of 11 comprehensive buttons including the power button, vacuum power control button, function button, start button, time toggles, seal button, stop button, and three preset buttons whose settings you may customize to your liking. 

Like its smaller, less chamber-like counterparts, this vacuum sealer excels at preserving the freshness of food, saving time spent on weeknight dinners, and preserving space in your freezer. 

However, this chamber vacuum sealer also has a marinade functionality that can help you merge flavors significantly faster than the traditional “put it in the fridge and wait” marinade process. 

The PolyScience 300 can be set to repeatedly vacuum and then reintroduce the air from the bag you have your marinade and food in.

This consistent back and forth pushes the flavors into your food faster, helping to reduce marinade time and enhance the taste of your food. 

The PolyScience 300 comes with 6 one pint vacuum bags, 6 one quart vacuum bags, 6 one gallon vacuum bags, and an external vacuum port for dry storage and pickling. 


VacMaster was founded in the United States by a team of meat processing experts in Kansas City who recognized the demand for a quality (and affordable) vacuum packaging machine that could be integrated into professional and home kitchens alike. 

As a result, VacMaster specializes in producing a wide variety of vacuum seal machines and has more recently expanded their lineup to include sous vide circulators and other sous vide accessories. 

The SOUS-temperature monitoring kit is one of VacMaster’s more impressive sous vide companions.

This digital device keeps a consistent temperature record of yours sous vide bath so you do not have to constantly baby sit it.

This is especially useful for restaurants as the information is stored in a digital log, making it easy to make food safety adjustments and prove compliance to food inspectors. 

VacMaster is currently based out of Overland Park, Kansas. 

With regard to their many vacuum sealers, VacMaster carries options from the simple PRO110 that serves as the classic, countertop home kitchen companion to the VP680 which is a behemoth of a vacuum sealer designed to assist professional processing plants with their production loads. 

The VacMaster VP215 Chamber Vacuum Sealer (view at Amazon) sits comfortably in the middle and is best suited for avid home food processors, like frequent hunters or fishers, or for a small restaurant kitchen

This device is 14 inches wide, 20 inches long, and 15 inches tall.

The chamber size of this device is 11.25 inches wide, 15.25 inches long, and 5 inches deep. The entire VacMaster VP215 weighs 84lbs. 

The interface of this chamber vacuum sealer consists of only four buttons to control the seal, vacuum power, and time, and a gauge to determine the level of vacuum power the device is putting out. 

The VacMaster VP215 chamber vacuum sealer provides a double seal to each bag that goes through the device. 

VacMaster insists that their vacuum chamber is a reliable and quiet device that is twice as strong as other machines on the market.

This machine does not need any cool down time between vacuum packaging projects because of its oiled pump. 

The machine functions by way of a one quarter horsepower rotary oil pump that does need to be regularly maintained.

The VacMaster VP215 comes equipped with a maintenance kit and comprehensive users manual so you are aware of how to properly care for your chamber vacuum sealer. 

This maintenance kit includes special oil for the purposes of regularly lubricating the machine’s pump. 

VacMaster also sells replacement parts on the occasion that you should need them and provides a one year limited warranty with the purchase of the VacMaster VP215 in the event that your chamber vacuum sealer unreasonably gives out. 

You may use chamber vacuum seal pouches up to 10 inches wide and 13 inches long with this chamber vacuum sealer. 

The VacMaster VP215 comes with a variety pack of different sized bags to assist you with your first few forays into vacuums sealing with this machine. 

PolyScience 300 vs. VacMaster 215: How do they compare?

Both of the above chamber vacuum sealers are top of the line devices catered towards passionate home chefs (and other nonprofessional and professional vacuum sealer enthusiasts), and both are manufactured by companies who have demonstrable experience in producing technologically reliable products. 

However, the PolyScience 300 and the VacMaster 215 comparison largely centers around the pump in each machine. 

Generally speaking, the difference between the Polyscience 300’s dry pump and the VacMaster 215’s oil pump is the time and resources needed for proper upkeep. 

An oil pump requires regular oiling for it to work properly and a dry pump does not.

Additionally, it may be more difficult to find replacement parts for oil pumps as the device ages. 

As far as performance goes, devices like the VacMaster 215 that are equipped with an oil pump are going to be capable of working more continuously.

These vacuum sealers do not require any cool down times and generally are little bit more powerful than dry pump chamber vacuum sealers. 

A dry pump is not extraordinarily different from an oil pump as far as functionality is concerned, but you will need to give it cooldown time and you do not have to worry about lubrication.  

Other notable differences between the PolyScience 300 and the VacMaster 215 not related to their respective pumps include the size of the chamber sealers and the materials included with them. 

The PolyScience 300 is slightly smaller than the VacMaster 215 (this may be due to its dry pump’s power capacity) and comes with a set 18 vacuum seal bags.

The VacMaster 215 does not state exactly how many vacuum seal bags come with it, but it does include a maintenance kit and user manual. 

Ultimately, if you are someone who needs to vacuum seal a lot at once in a timely fashion, it may be in your best interest to invest in the VacMaster 215 as it will be the faster of the two. 

If you are someone whose vacuum seal projects are not pressed for time and you do not want to worry about constant upkeep for your machine, the PolyScience 300 is the pick for you. 

Featured image credit: Image ID: 1178419033 (NOTE: image does not feature products highlighted in article)