Cardinal Heating & Cooling

Cardinal Heating & Cooling Are you having trouble with your heater or AC in Sterling? Count on the NATE-certified techs from Cardinal Heating & Cooling and set an appointment. Founded in 1991, family owned and operated located in Sterling, VA.

Founded in 1991, Cardinal Heating and Cooling, LLC is family owned and operated located in Sterling, VA.

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Season's Greetings from all of us at Cardinal Heating & Cooling.Wishing you a cheerful holiday season and a New Year of ...

Season's Greetings from all of us at Cardinal Heating & Cooling.
Wishing you a cheerful holiday season and a New Year of Peace and Happiness.

10 Signs Your Dog Is Suffering From Seasonal Allergies#1 – ItchingIs your dog constantly scratching himself? This is a t...

10 Signs Your Dog Is Suffering From Seasonal Allergies

#1 – Itching
Is your dog constantly scratching himself? This is a tell-tale sign of allergies. Especially if it seems to get worse after you have been outside.

#2 – Red, Irritated Skin
Just like humans, dogs can break out in rashes and hives when exposed to something they are allergic to. Look on their belly and feet, particularly in-between the toes, as these are the parts of their body that touch the things like grass or pollen the most. Ears can be another area that gets inflamed due to allergies.

#3 – Obsessive Licking
If your dog is constantly licking (again, pay close attention to belly and paws), than he may be bothered by something in his environment.

#4 – Rubbing Face on Things
Most often, it will be the carpet or your pillows, couches, etc. Some dogs will try and rub their entire body across a surface to alleviate the itchiness caused by an allergy.

#5 – Hair Loss
If the allergy has been left untreated and your dog keeps getting exposed to the allergen, they can suffer hair loss.

#6 – Hot Spots
Another result from continued exposure to an allergen without medication, are hot spots. The skin is so inflamed that the skin becomes very red and will even bleed. There will also be hair loss.

#7 – Red, Stinky Ears
If the allergy is affecting your dog’s ears, than often there will be an odor.

#8 – Shaking of Head
If your dog’s ears are being bothered by allergies, your dog will shake his head often, due to the irritation. They may also not want you to touch their head.

#9 – Redness of Skin
Allergies will also give dogs red skin near their mouth, chin and paws. In some circumstances, with anus will also become red and inflamed.

#10 – Puffy Eyes
Just like humans, dog’s with allergies often get puffy, red eyes.

Thermostat TuesdayMeet the Nest Learning Thermostat.The third gen Nest Learning Thermostat is more beautiful than ever, ...

Thermostat Tuesday

Meet the Nest Learning Thermostat.

The third gen Nest Learning Thermostat is more beautiful than ever, with a thinner, sleeker design and bigger, crisper display. And it’s proven to help save energy. In independent studies, the Nest Thermostat saved an average of 10-12% on heating bills and 15% on cooling bills.

Hello Fall

Hello Fall

Your HVAC system is the most important part of ensuring your building has an appropriate climate. Assuming the exterior ...

Your HVAC system is the most important part of ensuring your building has an appropriate climate. Assuming the exterior envelope of your structure is sound, the HVAC system itself becomes the most important line of defense for both regulating temperature and protecting tenants from exterior pollutants. Every aspect of your system works together to ensure indoor air quality.

This is especially important when allergy season rolls around. Millions of people all over the United States struggle with allergies – and those symptoms can significantly impede their ability to concentrate and perform their best at work. Yet, commercial buildings are not necessarily a haven against the pollution outdoors. In fact, indoor environments can be far worse!

It’s true: Pollution levels in indoor air can be up to five times higher than in outdoor air. The Washington, DC area may have a may have some have the worse allergy season in the United States, but allergens are still a severe health concern. Common pollutants including mold, dust mites, insect droppings, and pollen can enter a building and aggravate symptoms. These airborne irritants can reduce overall ventilation while causing allergic reactions throughout a building.

What’s to be done? Proactive maintenance is essential to clearing the air.

HVAC Systems Can Be Havens for Pollution – But They Don’t Have to Be

Taking extra maintenance precaution to prevent spring allergy flare-ups is good business: It can enhance the performance of residential owners, helping them achieve their goals with minimal distress. A modern residential HVAC system offers many opportunities to raise environmental standards by being attentive to specific components and challenges.

Filter Optimization is Easy and Effective

All filters, regardless of type, should be regularly replaced to enhance air quality. Low-quality filters, such as the standard flat panel filters on furnaces, offer the least protection against indoor pollution. Whenever possible, high-efficiency HEPA filters should be used instead. These have a MERV rating of up to 16 and are appropriate for large residential homes. Generally, filters should be replaced every one to two months for best results.

Regular Maintenance Makes the Biggest Difference

Regular maintenance of your HVAC system allows it to operate at maximum effectiveness all throughout the year. This is critical, because it is not always obvious when the system is starting to lose efficiency. Small maintenance issues can mount and turn into major problems that require costly replacement. A routine maintenance plan is the best way to prevent and resolve air quality issues.

Don’t Forget to Monitor Your Air Quality

Regular air quality measurement can help you head off the most serious systemic problems. If “allergy season” seems to be longer than usual within your building, there could be other explanations: For example, the proliferation of mold or vermin. As severe as these issues are, they can still go undetected in the absence of appropriate testing. Acting fast helps to reduce possible business disruption.

Spring allergies are a nuisance, but they don’t have to be a crisis. Start your maintenance today for cleaner air tomorrow! To learn more, just contact Cardinal Heating & Cooling today at 703-430-4040.

You can learn a lot about a company when it comes to customer service.

You can learn a lot about a company when it comes to customer service.



1. Timely service

Dependable HVAC companies appreciate the time of their clients. They do not keep you waiting, or lie about what time they’ll be to your home. After all, an HVAC emergency breakdown is stressful: you want a team that is going to be there to help you when they say they’ll be there.
It shows that they take customer emergencies seriously, and that they’re dedicated to getting the job done.

2. Certified HVAC technicians
Only the best HVAC businesses hire certified technicians. Preferably, these techs should be certified by the North American Technician Excellence (NATE) program, which is widely considered to be the top-notch technician training and certification program in the hemisphere.
Certified professionals are knowledgeable, efficient, and expert in air conditioner and furnace repairs. Ask any business you’re thinking about working with what kind of training and experience their techs have.

3. Affiliation with a manufacturer
The top tier of HVAC companies typically have an affiliation with a particular brand or manufacturer. This means that the company meets the manufacturer’s standards for quality installation, service, and more.
Ask any HVAC pro you’re thinking about working with what kind of affiliations they have. Is there any other company vouching for the quality of their work? If not, you might want to look elsewhere.

4. Condition of the HVAC company vehicle
This might sound silly, but it’s a good litmus test if everything else checks out. The condition of the company vehicle says a lot about their quality of services. A well-kept and clean vehicle that bears the company name is a sign that the company takes pride in its work. It’s also an indication that the company wants to make the best impression on the customers.
In contrast, a dirty-looking vehicle is a sign that the company does not takes its work seriously or does not think much about its reputation. That company might not be legitimate, or have been in business all that long.

5. Online reputation
A company with mostly positive reviews online can be trusted to take care of your heating and cooling system. Companies win the trust of the customers by providing dependable and honest services. If they try to dupe the customers, their online reputation will reflect the action.
However, if they serve customers with professionalism, integrity, and care, customers will have nothing but positive words to say about the company. That’s one of the reasons Cardinal heating & Cooling has great reviews!
Look past the lowest price if you want the best value
When searching for an HVAC company, you should not look for the lowest price. If you go for price alone, you are almost guaranteed to find a company with an unprofessional, uninsured, and uncertified professionals with bad customer service reputation.
Ultimately, this can end up costing you more in the long run if that said company does a bad job.

Need a trustworthy HVAC company? Turn to Cardinal Heating & Cooling!
Contact our team here at Cardinal Heating & Cooling
703-430-4040. We have a team of NATE-certified and experienced technicians, and we’re ready to help you with your cooling and heating needs.


Reminder for our customers: Please ensure the areas around and on top of your heat pump are kept clear of both snow and ice. This will help with the air flow and allow the unit to operate as efficiently as possible and alleviate strain on your system.

DOES YOUR DOG HAVE WINTER ALLERGIES ???What are Winter Season Allergies? Winter season allergies can affect dog’s skin, ...
Winter Season Allergies in Dogs - Symptoms, Causes, Diagnosis, Treatment, Recovery, Management, Cost


What are Winter Season Allergies? Winter season allergies can affect dog’s skin, coat, and his breathing. These allergens that occur in the wintertime are usually airborne, which causes the symptoms of sneezing and itchy, watery eyes. Within the home, dust mites and mold, even in very small quantities, are the triggers for these particular symptoms. With winter allergies, a dog skin and coat are also affected since the dog is indoors more often and is having more contact with items within the home. It is always a good decision to keep your dog warm in the winter time, and many dog owners choose to keep their dog indoors, except for taking quick walks and going to the bathroom. However, being inside the home may expose the dog to drier air and a build-up of mold and other allergens within heating systems and humidifiers. Many dog owners that witness their loved ones suffer from airborne allergies in the winter months find that regular cleaning of the filter in the furnace, keeping the humidity under 40% within the home, and making sure the humidifier is cleaned on a regular basis make a big difference. They also find that regular vacuuming of the home keeps the dust mites at bay. Winter season allergies in dogs are a result of allergens within the dog’s environment, which is usually within the home. Winter season allergies are very treatable under a veterinarian’s care. Symptoms of Winter Season Allergies in Dogs Winter season allergies have similar symptoms to other seasonal allergies. The symptoms begin when the cold weather begins, and may include: Coughing Dark under-eye pigmentation Watery eyes Itchy eyes with a discharge, usually clear Runny nose Sneezing Reverse sneezing Itchy skin Dry, irritated skin that may be red in color Excessive scratching and licking of skin and feet Types Winter season allergies in dogs are usually caused by the environment of the indoors, as many dogs are inside more often during the winter months. Types of allergens dogs may be affected by include: Dust mites Dry air with low humidity Mold Contact allergies, such as with carpeting Causes of Winter Season Allergies in Dogs Winter season allergies in dogs are caused by environmental triggers that commonly occur in the winter months. Specific causes of cold weather allergies include: An overactive immune system The immune system fighting a particular allergen, thus causing a reaction Specific allergens that are related to cold-weather Specific allergens within the home during the winter months Diagnosis of Winter Season Allergies in Dogs If you see any of the above symptoms in your dog during the season of winter, make an appointment with your veterinarian. Your veterinarian will assess his symptoms and discuss with you the subject of winter allergies and what can cause them. The veterinarian will look for dandruff within your dog’s fur, take a very close look at his coat, and also check to see how much your dog is shedding. Looking closely at these symptoms may determine if your veterinarian feels that your dog has an underlying health condition. Your veterinarian may also take a skin test just to be sure his irritated skin is not related to another ailment. Your medical professional will also ask questions pertaining to his symptoms, when they began, the severity of them, how long they last, and any other questions that will help him make a definitive diagnosis. He will then do a physical evaluation of your loved one, which will include looking in his ears for any signs of infection, and perform any tests which he feels are necessary. More than likely, your veterinarian will be able to determine that your dog is suffering from winter allergies. Fortunately, winter allergies in dogs are quite treatable for the few months out of the year that have an effect on him. Treatment of Winter Season Allergies in Dogs The medical professional will offer several means of treatment for your companion. With winter allergies, they are seasonal, so any treatment the dog is given will be for a few months out of the year. Treatment options may include: Shampoo Your veterinarian may suggest a calming shampoo for your dog. Regular bathing with shampoo specialized for skin allergies may help your dog find relief from winter allergies. He may also suggest that you avoid bathing the dog too often, so the skin does not dry out; however, he may be able to recommend a moisturizing, hypoallergenic cleanser. Medications There are medications on the market that can help your dog with his winter allergies. Antihistamines, corticosteroids, and topical creams on a prescription level are formulated to work against the allergens that affect your dog. These medications are typically for temporary use; they are commonly used just a few months out of the year. Desensitization Therapy Desensitization therapy may be an option for winter allergies if your dog has a great deal of discomfort. Immunosuppressants or allergy shots may help the dog build up immunity to the offending agent. These medications work by injecting a very small amount of the allergen into the dog, thus allowing the dog’s system to become more familiar with whatever allergen that bothers him. Recovery of Winter Season Allergies in Dogs With winter season allergies, your dog should be able to effectively recover with the help of your veterinarian. Once you apply a regimen of treatment to your companion, he will begin to feel better. This may take some time; however, to adjust the actual medications and possibly the lifestyle of your dog in terms of trying to rid some of the allergens from his environment. Once you are more familiar with allergies, you will be more aware of what to look for in terms of symptoms. If your dog develops any new symptoms, simply consult with your veterinarian to see what else can be done in terms of treatment. Fortunately, winter allergies in dogs only last for a few months, and once the springtime comes around many of the cold weather allergens will dissipate.

Read more at:

Winter season allergies in dogs are a result of allergens within the dog’s environment, which is usually within the home. Winter season allergies are very treatable under a veterinarian’s care.

HOW COLD IS TOO COLD FOR YOUR DOGWe all know that exercise and the mental stimulation being outdoors play are key to kee...


We all know that exercise and the mental stimulation being outdoors play are key to keeping our dogs healthy and happy, but what should we do when it’s cold outside? When do the risks of spending time in the cold outweigh the benefits of being outdoors? Let’s take a look at the dangers associated with winter weather and how we can still safely enjoy the great outdoors with our dogs during wintertime.

All Dogs Aren’t Created Equal

Dogs are individuals. An outdoor temperature that feels downright balmy to one dog might send another in search of shelter. What are some of the variables that affect how dogs respond to the cold?

Coat type – Dogs with thick, double-layered coats tend to be the most cold-tolerant (think Siberian Huskies, Newfoundlands or Samoyeds). In most cases, these breeds have been developed in Northern climates and may also have other anatomical, physiological or behavioral attributes that allow them to thrive when it’s frigid. On the other hand, dogs who have exceptionally thin coats (e.g., Greyhounds and Xoloitzcuintli) suffer the most in cold weather.

Coat color – On a clear day, black, brown, or other dark-coated dogs can absorb significant amounts of heat from sunlight, keeping them warmer in comparison to their light-coated brethren.

Size – Small dogs have a larger surface area to volume ratio. In other words, the smaller dogs are the more skin they have (in relation to their “insides”) through which to lose heat. Therefore, small dogs get colder more readily than do large dogs … all other things being equal.

Weight – Body fat is a good insulator. Thinner dogs tend to get colder quicker than do their heftier counterparts. That said, the health risks of being overweight far outweigh any benefits, so don’t fatten up your dogs during the winter months in a misguided attempt to protect them from the cold.

Conditioning – We’ve all experienced this one. Fifty degrees feels quite chilly in October, but after a long, cold winter, a fifty degree day in April can make us break out the shorts and t-shirts. Dogs who are used to cold temperatures handle them much better than do pets who aren’t.

Age and Health – The very young, the very old, and the sick are not as able to regulate their body temperatures in comparison to healthy dogs in the prime of their lives, and they therefore need greater protection from the cold.

All Temperatures Aren’t Created Equal

The temperature as it registers on a thermometer isn’t the only environmental factor that affects how dogs feel the cold.

Wind chill – A brisk breeze can quickly cut through a dog’s coat and greatly decreases its ability to insulate and protect against cold temperatures.

Dampness – Rain, wet snow, heavy fog, going for a swim … any form of dampness that soaks through the fur can quickly chill a dog even if the air temperature is not all that cold.

Cloud cover – Cloudy days tend to feel colder than do sunny days since dogs can’t soak up the sun and warm themselves.

Activity – If dogs are going to be very active while outside, they may generate enough extra body heat to keep them comfortable even if the temperature is quite low.

Cold Temperature Guidelines for Dogs

In general, cold temperatures should not become a problem for most dogs until they fall below 45° F, at which point some cold-averse dogs might begin to feel uncomfortable. When temperatures fall below 32° F, owners of small breed dogs, dogs with thin coats, and/or very young, old or sick dogs should pay close attention to their pet’s well-being. Once temperatures drop under 20° F, all owners need to be aware that their dogs could potentially develop cold-associated health problems like hypothermia and frostbite.

The best way to monitor dogs when it’s cold is to keep a close eye on their behavior. If you notice your dog shivering, acting anxious, whining, slowing down, searching out warm locations or holding up one or more paws, it’s time to head inside.


504 Shaw Rd, #221
Sterling, VA

Opening Hours

Monday 07:30 - 16:00
Tuesday 07:30 - 16:00
Wednesday 07:30 - 16:00
Thursday 07:30 - 16:00
Friday 07:30 - 16:00
Saturday 08:00 - 12:00


(703) 755-0680


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Sterling Heating & Cooling

Is your heater or AC in Sterling becoming unreliable? Reach out to Cardinal Heating & Cooling right away. The family owned and operated company offers a full range of heating, cooling, and air quality services for residents and business owners throughout Fairfax and Loudoun Counties. Backed by more than 34 years of industry experience, the company is committed to creating comfort for customers, one at a time. Whether your heater or AC needs repairs, maintenance, or replacement, Cardinal Heating & Cooling’s team of NATE-certified techs can handle them all. Call now to set an appointment or ask for a free estimate. Discounts are available with complete HVAC system installations.

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