Manage your horses’ heaves with Haygain Hay Steamers: The only scientifically proven solution to reduce 99% of heaves causing irritants like mold, bacteria, and dust in Hay.

By steaming your hay with Haygain, you will be able to reduce exposure the main environmental factor contributing to heaves.

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Over 20,000 Hay Steamers sold worldwide
Over 20,000 Hay Steamers sold 
Dedicated customer service

Heaves, or Equine Asthma, is more common than you think and we are here to help

Severe Equine Asthma affects 14–17% of horses in countries with a cool climate. Mild-moderate Equine Asthma affects 68–77% of pleasure horses and up to 80% of racehorses (Couetil et al., 2020). Unnoticed instances of the disease are thought to be vast.

Horse heaves is a chronic disease. However, there is overwhelming evidence that Haygain Hay Steamers offer are effective in reducing Inflammatory Airway Disease (IAD) (Journal of Veterinary Internal Medicine Dauvillier, Woort and van Erck‐Westergren, 2018), which is now known as mild Equine Asthma.



Horses inhale up to 4.6 million ARD particles in every breath while their nose hovers over their hay and this is the biggest contributing factor to heaves

Hay is frequently bailed with suboptimal drying conditions, leading to hay retaining elevated levels of moisture allowing mold growth. This mold eventually results in the production of harmful spores and dust which are the key causes of respiratory diseases such as heaves.

Dry hay can contain typically 930 thousand Airborne Respirable Dust (ARD) particles per liter of air and the average horse can move five liters of air in and out of the lungs with each respiratory cycle. That means a horse could be inhaling 4.6 million ARD particles in every breath while their nose hovers over their hay. (Journal of Equine Veterinary Science Moore-Colyer et al., 2015)

Haygain Hay Steamers eliminate up to 99% of respirable dust particles, killing mold, bacteria, fungal spores and mite feces
Haygain is the only equine company supplying all of the United States, the British and the German national equestrian teams 
Haygain is the only equestrian company in the world to be official team supplier to the United States, British and German national equestrian teams.

The German

 Equestrian Federation

Horses inhale up to 4.6 million ARD particles in every breath while their nose hovers over their hay and this is the biggest contributing factor to heaves

Hay is frequently bailed with suboptimal drying conditions, leading to hay retaining elevated levels of moisture allowing mold growth. This mold eventually results in the production of harmful spores and dust which are the key causes of respiratory diseases such as heaves.

Dry hay can contain typically 930 thousand Airborne Respirable Dust (ARD) particles per liter of air and the average horse can move five liters of air in and out of the lungs with each respiratory cycle. That means a horse could be inhaling 4.6 million ARD particles in every breath while their nose hovers over their hay. (Journal of Equine Veterinary Science Moore-Colyer et al., 2015)

Haygain Hay Steamers eliminate up to 99% of respirable dust particles, killing mold, bacteria, fungal spores and mite feces
Haygain is the only equine company supplying all of the United States, the British and the German national equestrian teams 

The German

 Equestrian Federation

The German

 Equestrian Federation

Haygain Hay Steamers offer an effective, science-backed solution to the management of heaves


Haygain Hay Steamers provide a sustainable way to improve respiratory health and keep your horse breathing easily

In extreme heaves cases, corticosteroids and bronchodilators provide immediate relief of clinical symptoms, but their long-term use is not sustainable. There is overwhelming evidence for the effectiveness of Haygain Hay Steamers in reducing Inflammatory Airway Disease (IAD) in horses. In fact, no other method of feeding hay tested in the study was found to be even remotely as effective (Dauvillier, Woort and van Erck‐Westergren, 2018).

Some horse owners prefer soaking hay. Unfortunately, soaking comes with a number of downsides

Soaking only dampens down the respirable particles and only by 90%; the bacteria, mold and fungal spores are ingested and can elicit an inflammatory response. Even a 10-minute soak increases bacteria by 150%.

Soaking reduces the palatability and significant levels of all nutrients are, whereas Haygain Hay Steamers increase palatability of hay and maintain the hay’s nutrients.
Soaking is also harmful on the environment, using roughly 60-100 liters of water that, post soaking is 9x more polluting than raw sewage. Haygain Hay Steamers produce no effluent and Haygain’s mid-size Hay Steamer only uses about 3.5 liters of water per cycle.


Haygain Hay Steamers are a sound investment in your horse’s long-term management of heaves

Medical treatment for Severe Equine Asthma incidents is expensive. Clinical exams are complemented by diagnostic procedures that may include tracheal wash, bronchoalveolar lavage and related cytology reports.

Purchasing a Haygain Steamer for your horse returns the investment in the form of helping prevent and manage respiratory disease and improves your horse’s overall health.
The single most important treatment for heaves is to improve the environment to reduce exposure to dust and molds. Medication will alleviate clinical signs of disease, however, respiratory disease will return after medication is discontinued if the horse remains in a dusty, moldy environment (www.ksvhc.org, n.d.).

Haygain Hay Steamers are a sound investment in your horse’s long-term management of heaves

Medical treatment for Severe Equine Asthma incidents is expensive. Clinical exams are complemented by diagnostic procedures that may include tracheal wash, bronchoalveolar lavage and related cytology reports.

Purchasing a Haygain Steamer for your horse returns the investment in the form of helping prevent and manage respiratory disease and improves your horse’s overall health.
The single most important treatment for heaves is to improve the environment to reduce exposure to dust and molds. Medication will alleviate clinical signs of disease, however, respiratory disease will return after medication is discontinued if the horse remains in a dusty, moldy environment (www.ksvhc.org, n.d.).

AS FEATURED IN

The Power of Prevention 

Reducing Allergens is the Best Way to Reduce Allergies 

Sensitivity to one allergen often increases your horse’s sensitivity to other allergens, compounding the challenges for horses with heaves. Haygain Hay Steamer’s ability to significantly reduce the allergens in hay helps to prevent this hypersensitivity spiral. 

Horses fed Haygain Steamed Hay were 65% less likely to develop IAD

Haygain Hay Steamers can help all the horses in your barn, not only those affected by heaves. Feeding virtually dust-free forage to your heaves horse helps reduce the overall quantity of airborne dust in the whole stable.
For healthy horses, Haygain is a powerful tool for keeping them that way. Results from a large-scale study demonstrate that feeding Haygain Steamed Hay reduces risk of Inflammatory Airway Disease (mild equine asthma) occurrence by 65% (Journal of Veterinary Internal Medicine Dauvillier, Woort and van Erck‐Westergren, 2018).


Horses fed Haygain Steamed Hay were 65% less likely to develop IAD

Haygain Hay Steamers can help all the horses in your barn, not only those affected by heaves. Feeding virtually dust-free forage to your heaves horse helps reduce the overall quantity of airborne dust in the whole stable.

For healthy horses, Haygain is a powerful tool for keeping them that way. Results from a large-scale study demonstrate that feeding Haygain Steamed Hay reduces risk of Inflammatory Airway Disease (mild equine asthma) occurrence by 65% (Journal of Veterinary Internal Medicine Dauvillier, Woort and van Erck‐Westergren, 2018).


Haygain Hay Steamers helped these horses manage their heaves for happier horses and owners 

Tipper the Twice-Rescued Horse
Tipper, the Twice Rescued Horse, saved from slaughter then, later, from heaves by an owner determined to find a solution. “It almost makes me cry,” Jennifer says. “It’s really amazing. Haygain saved her life.”
Loyal's Heaves Story
Melissa "After not even three days on steamed hay, he was not coughing," Melissa reports. "He's back in normal work. He's peppy, happy, and talking all the time again. He's ready to go to work. "
Sunni's Heaves Story
Whendy "It got so bad that, if I hadn't had steroids on hand, she would have dropped dead... Her life is changed," Whendy reports of Sunni. "There's no more coughing, she can breathe."
Haygain Steamed Hay is relied on by both Olympic equestrians and “regular” horse owners, and all who prioritize their horse’s health and well-being. 

Over 80% of top ranked show jumpers, dressage and eventing riders globally rely on Haygain Steamed Hay to improve their horses well-being and keep them at peak sporting performance.

McLain Ward

Team USA 

“We are incredibly happy to have added the Haygain Hay Steamer to our program, and quickly noticed an increase in the quality of our horses’ breathing, especially in those with respiratory problems. In addition, we’ve noticed the hay is easier to chew and digest which is always a concern for the older horses.”

Jessica Springsteen

Team USA

“I love using Haygain Steamed Hay because it helps improve my horses’ respiratory conditions and stops them from coughing, with Haygain’s help, I can make sure the hay wherever I go is never dusty and it’s bacteria free, so my horses don’t have any issues during competitions."

Dr. Emmanuelle van Erck Westergren 

Veterinarian 

"Haygain hay steamers are a simple, fool proof solution to improve our horse’s respiratory health. I recommend it for my patients and those owners who have adopted it really see the daily benefit it brings to their horses and would not revert to normal hay; and the horses love it!” 

Wren Burnley DVM

 Veterinarian & GP Dressage Rider

"I never want to go back to soaking hay again; as an asthmatic and an athlete myself, I cannot stick my nose in a regular bale of hay, but I can in a bale that has come out of the Haygain machine!"