What is the Best Microwave Hot Water Bottle?


Hot water bottles made of rubber shouldn’t be microwaved in order to heat up the water inside of them. However, you can avail of microwaveable hot water bottles. On that note, which are the best microwave hot water bottles out there?

A reusable hot water bottle bag is what people use as a method of immediate pain relief (instead of for drinking). You typically put hot or even boiling water inside then apply the bottle or bag unto the affected painful part, like your back, muscles, joints, or any bruised area of your body.

However, most hot water bottles or bags can’t be microwaved, particularly those made of natural rubber. When getting a microwavable hot water bottle, get one made of silicone, lamb wool fleece, and the like.

So let’s find out which one is the best microwave hot water bottle. Keep on reading to find out.

Microwave Hot Water Bottle Buying Guide

You should specifically search for the following things when searching for a microwaveable hot water bottle or heat pad. The most important thing about them? They should be microwaveable.

They shouldn’t have any material that melts or gets set on fire when microwaved. The microwaveable hot water bottle pad shouldn’t be confused with the microwaveable heating pad with flaxseed and rice wrapped in cotton and fleece.

Why Not Just Choose Any Pad and Toss It in the Microwave?

This list covers a variant of the microwaveable heating pad that uses hot water instead of other materials like hot beads or microwave-safe fabric. Some allow you to put hot water inside them and others have liquid already inside of them that shouldn’t be taken out of the bottle.

Get something made of silicone instead of natural rubber to ensure effectiveness, comfort, and safety. You should also take into consideration the materials, shape, and size of the hot water bottle. Don’t mistake this bag for actual beverage containers for coffee and the like though.

Silicone Hot Water Bottle Bag
Silicone Hot Water Bottle Bag

Delivers Real Therapeutic Benefit with Gentle Sustained Heat

The microwaveable hot water bottle should be certified as a health product capable of delivering real therapeutic benefits of sustained yet gentle heat. You’re supposed to apply the bottle to your affected area to relieve things like headaches, body aches, bruising, muscle pain, joint pain, and so forth.

It should also be a source of warmth and comfort, like a heated pillow that’s hot enough but not hot enough to scald you. It should even be factory sealed and have engineered laminate pouch containing water absorbed onto a medical-grade non-woven pad.

Look for FDA Approval and Certification

Like with any containers housing beverages, you should also make sure your hot water bottle has FDA approval as microwave-safe. This means it’s BPA-free or the only BPA (a plasticizer) it exudes when microwave are so minute it won’t affect humans upon contact.

Sure, the hot water inside the hot water bottle isn’t needed to be fit for human consumption. It just needs to be hot liquid so that you could use the hot water bottle or pad as a therapy bag. However, BPA can still leach unto you and your skin if you’re not safe.

Interior Thermal Retention is Important

The interior of your hot water bottle should retain heat for a long time or else you’ll have to microwave it repeatedly or boil a thermos’ full of tap water.  It should also stand up against high boiling temperatures without exploding or melting from the building heat pressure.

The internal thermal retention of your hot water bag ensures that it keeps warm enough for a long time without being too scalding upon initial heating. The bag should act like a thermos that keeps the heat in before the next microwave reheating is required for maximum efficiency.

Portable and Cord-Free is the Way to Go

Get a hot water bottle that’s cord-free and portable too. Some heating pads use electricity instead of hot water or some sort of thermal material to keep itself hot. Naturally, heating pads with electric parts shouldn’t be microwaved at all.

A microwaveable heating pad allows you to ease stress, sore muscles, and cramps when you’re lounging on your bed or working at the office in a seated position. A microwaveable hot water bottle is different from a microwaveable heating pad because of its use of hot water.

Comes with Safety and Comprehensive Use Instructions

Check out the specs of your hot water bottle type of heating pad care of its manual. Get the ones with the best size, shape, and materials. The manual should match the specs found on the online store or Amazon page. The manual should tell you how to safely handle the bottle.

It should also tell you how to use the bottle so that you can figure out if it’s what your aching body part needs as far as TLC is concerned. Some have a square shape for universal usage while others can be placed on your neck and shoulders because it’s shaped like a croissant.

Let’s Consider the Materials That Should Be Microwave-Safe

When looking for a microwave-safe hot water bottle, you’re likely to avail of the silicone one, especially if you’re searching for a refillable bottle for therapeutic purposes. On the outside of your bag, it should have soft, skin-friendly detachable fabric.

This keeps you warm and protects you from scalding. The majority of options utilize synthetic fabrics but the ones that insulate better would be natural fabrics made of cotton and wool. They cost extra though. All-natural options also work better with people who have sensitive skin.

The Shape of the Microwaveable Heating Pad of the Hot Water Bottle Variety

Silicone water bags also have the flexibility and loose consistency that allow it to mold to any part of your body. Hot water bottles ensure repeated reheating on the microwave. However, other thermal pad materials include the use of clay beads, grains, rice, and flaxseed.

The thing about water is that it retains the shape of its container. The thing about silicone is that it also conforms to the shape of your body because of its flexibility. It should then cover any body part you have, from the forehead to the abdomen as well as the neck, shoulders, and limbs.

Should Microwaveable Hot Water Bottles Contain Scented Materials?

The only scented parts of a hot water bottle for microwave use usually have to do with its silicone exterior or the cotton exterior. Scented ingredients are more common in solid material heating pads. Manufacturers add lavender sprigs, essential oils, rose petals, or chamomile for aromatherapy.

Silicone water bottles more often than not end up odorless. The rubbery smell of cheaper water bottles has more to do with the cheap rubber they use. Don’t microwave those, that will only release the toxic chemicals used to make that rubber.

The Best Microwave Hot Water Bottle Options

Here are the best microwave hot water bottles we could find on Amazon. They offer comfort for pain in the back, shoulder, joints, limbs, and muscles by being versatile, sturdy, and relatively affordable. Most of them are made of silicone to allow for FDA-approved microwave-safeness.

1. Hot and Cold Therapy Silicone Hot Water Bag That’s Environment-Friendly

The Redify Microwave Heating Silicone Hot Water Bag is made of environment-friendly materials that don’t degrade easily. It can also do both hot and cold therapies. This means you can put cold water in it to treat swelling-related pain relief on top of hot water to deal with bruising aches and arthritic pain.

Redify Microwave Heating Silicone Hot Water Bottle Bag
Redify Microwave Heating Silicone Hot Water Bottle Bag

When microwaving this bag, don’t exceed 3 minutes and use only 800 watts of power. Reduce power and time accordingly. Only use 80°C or 176°F hot (not boiling) water.

Wattage800 watts
Bag MaterialFood-grade silicone
Cover MaterialCotton
Capacity350 milliliters
Weight7.32 x 5.16 x 2.09 inches
Dimensions5.93 ounces
Unique FeaturesIt can do both hot and cold therapies. It’s recyclable and comes in red, blue, or cream.

 

2. Lengthy Odorless and Recyclable Silicone Hot Water Bottle with Bigger Capacity

If you wish for more coverage you should avail of the extra-large HEYPORK Microwave Heating Silicone Hot Water Bottle Bag. It stands out from the pack by offering a longer and leaner heat pad design.

Microwave Heating Silicone Hot Water Bottle Bag
Microwave Heating Silicone Hot Water Bottle Bag

However, it does have the more standard square hot therapy water bottle design too as well as variant colors. It can double as an ice bag too for ice water like the Redify water bottle.

Wattage800 watts
Bag MaterialFood-grade silicone
Cover MaterialCotton
Capacity525 milliliters
Weight‎ 8.8 ounces
Dimensions9.84 x 3.94 x 1.97 inches
Unique FeaturesThis comes in long and short versions as well as pink or blue colors.

3. A Festive-Looking Hot Water Bag with On-Point Valentine’s Day Aesthetics

Many of these hot water bags share the same water temperature and microwave wattage limits. Therefore, they rely more of designs and aesthetics to make themselves more unique.

This is definitely the case for the “hearty” designs of the Rukaza Microwave Heating Face Silicone Bag. It has embossed heart designs on the bag itself and its cover has heart patterns all over it while still maintaining its basic hot water bottle function.

Wattage800 watts
Bag MaterialFood-grade silicone
Cover MaterialCotton
Capacity525 milliliters
Weight8.47 ounces
Dimensions9.84 x 5.12 x 1.97 inches
Unique FeaturesIts knitted cover has a more festive design to it instead of a plain color. The bag also has a heart design.

4. An Explosion-Proof Microwaveable Hot Water Bottle with Bunny Theme

Not only does the Renhan Microwave Heating Silicone Hot Water Bottle have an affordable price and a cute bunny-themed and moon-themed design to it (from bottle to cover). It’s also explosion-proof and can stay hot for 2-3 hours.

 Microwave Heating Silicone Hot Water Bottle
Microwave Heating Silicone Hot Water Bottle

It can even resist up to 1.5 kilowatts of microwave power for 3 minutes. However, its high ratings seem suspect to us because it only has 8 users rating it.

Wattage1.5 kilowatts
Bag MaterialFood-grade silicone
Cover MaterialCotton
Capacity330 milliliters
Weight6.38 ounces
Dimensions7 x 3.9 x 1.8 inches
Unique FeaturesIt’s explosion-proof. It has a pink water bottle and pink cover design with a “rabbit on the moon” theme for them.

 

5. Nothing Low Key about Lowki and Its Up to 1.5 Kilowatts Microwaveable Hot Water Bottle

Like the similarly sized Renhan, the Lowki Microwave Heating Bottle can also take up to 1.5 kilowatts of microwave power, unlike the previous entries of Rukaza, HEYPORk, and Redify that can only take 800 watts of microwave power instead.

Lowki Microwave Heating Bottle
Lowki Microwave Heating Bottle

It also has an adorable cat-themed pink hot water bottle design with a gray knitted sock cover that also has a cute cat emblazoned on it.

Wattage1.5 kilowatts
Bag MaterialFood-grade silicone
Cover MaterialCotton
Capacity330 milliliters
Weight6.38 ounces
Dimensions6.9 x 4.2 x 1.9 inches
Unique FeaturesCat-themed pink hot water bottle with a gray knitted sock-like cover.

6.  An Adorable and Inventive Hot Water Bag Shaped Like a Plush Cat Doll

What more can be said about the OAKOAK Microwave Heating Silicone Hot Water Bag? It’s a soft silicone “plush” cat doll that doubles as a microwaveable hot water bag! There’s no hot water bottle or bag like it for sure!

Microwave Heating Silicone Hot Water Bag
Microwave Heating Silicone Hot Water Bag

It matches all of the features of the best of the hot water bags on this list, but it doubles the cuteness of even the cat-themed hot water bag by Lowki. Its shirt even doubles as its cover!

Wattage1.5 kilowatts
Bag MaterialFood-grade silicone, PP, and Terylene
Cover MaterialCotton
Capacity452 milliliters (15.3 ounces)
Weight7.2 ounces (no water)
Dimensions9.1 x 4.2 x 2.4 inches
Unique FeaturesIt’s a microwaveable hot water bag shaped like a plush cat toy, complete with its own shirt.

Additional Tips

Look for a hot water bottle for a microwave that doesn’t require emptying or refilling if possible. They should be reheatable care of the microwave using hot water or even other liquid materials. It should even have FDA approval for microwave use on top of registration as a Class-1 medical device.

At any rate, the best hot water bottle or heat pad options that you can microwave include HEYPORK, followed by Renhan and Rukaza. Renhan technically has the highest Amazon rating, but HEYPORK has over 900 ratings to its name.

Special mention goes to OAKOAK and its plush toy design for its hot water bag. It’s innovative to say the least.

Megan Ann

Through the years, the microwave oven has become a standard appliance for all homes. It is safe to say that there is no home without a microwave oven. If you are looking for a microwave oven that best fits your needs, You find the right website.

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