Out of all the HVAC parts and components, the last thing on your mind is probably the Condenser Pad. They are often secondary considerations because most people do not know what they are. However, they serve an important role in protecting the outdoor AC unit and keeping it running efficiently. This is why everyone who has a freestanding air conditioner, an HVAC condenser pad is a must-have.

If you are unfamiliar with condenser pads and what role they play in your HVAC system, this article is for you. Read on to learn, and why you need them.

What Are AC Condenser Pads, And Why Are They Important?

Air conditioners' produce a lot of noise & vibration, and if set on soil, they can sink into the ground and damage the components of the system. This is why they need to be mounted on a solid foundation that is even & flat. This is where Condenser pads come into play. They are pieces of material, usually made of concrete or rubber, which sit underneath the condenser unit and provide a flat, stable surface for the outdoor unit. They not only support & prevent them from sinking but also attenuate the outdoor noise units create. Also, it's important to keep the unit still and level as the compressor and the condenser coils hold refrigerants in a liquid state, and leaving the unit unbalanced can cause problems for the system.

Furthermore, if condenser units are not lifted up by condenser pads and make direct contact with the ground, they are exposed to moisture and insects. This can lead to corrosion in the unit. However, installing a condenser pad can reduce the likelihood of that.

Apart from this, they also play a vital role in a unitary system, as they help to release heat from refrigerant that has been compressed within the system.

Types Of AC Condenser Pads

There are different varieties of AC condenser pads available in the market today. But, most are either made with concrete or plastic.


Concrete Condenser Pads are built for strength and are ideal for larger air conditioners that have heavy units as they provide enough support.


These pads are typically made from recycled plastic or rubber and are well-suited for residential smaller, lighter air conditioners. If installed correctly, they last longer and provide good support.

How To Choose The Right AC Condenser Pad

AC condenser pads are important for the HVAC system's overall health and performance. So if you're looking to invest in a new condenser pad for your outdoor unit, here are some factors you should consider to choose the right one.


Measure the size of your condenser unit, and then invest in a condenser pad that exceeds the unit footprint on all sides by 2 - 4 inches.


While concrete is the most common material for condenser pads, it's certainly not the only option. They tend to sink into the ground over time. However, you can find some manufacturers producing condenser pads made of eco-friendly recycled plastics. These pads not only stand up against the rain but also hold up against the constant UV exposure from the sun.


Regardless of what type of material you invest in, you need to ensure that your condenser pad is durable as it has to stand up to quite a bit of weight. Most condenser units weigh in at a few hundred pounds, and this kind of weight can do some damage.


Getting a condenser pad that sits a bit higher off the ground is always a good idea. This can save your unit and the pad from rain pools and insects on the ground.

How To Maintain AC Condenser Pads

Here are some of the steps that you can take to improve your condenser pad's life span and performance:

  1. Cut down grasses and weeds growing around the condenser pad to avoid a restricted airflow inside the condenser coils.
  2. Keep the surface clean by removing dirt to avoid the infestation of pests and insects.
  3. In case the condenser pad is not even, add gravel and pieces of stone to maintain proper stability.

Shop At ProServices Supply

We are one of the top suppliers of HVAC systems and parts for all types of facilities. Check out our extensive range of Diversitech lightweight and durable Condenser Pads. Our condenser pads are made with 98% recycled plastic and provide optimum strength and self-leveling ground support. If you are not sure which pad would suit best for your unit, call us today at (877) 776-8228 and speak with one of our experts, who will provide you with a personalized experience.

1 Write a comment(s)
Mike Richards
Jul 19, 2022 08:31
Yes, that's right. We recently installed new heat pumps at our property, and some of the condensers started rusting within months. After consulting our HVAC technician, we found out that our units were exposed and vulnerable because we have a water source nearby and hadn't installed the pads.

Need Help? Get Free Consultation

By clicking you agree to our Terms and Conditions