Which is Right for Your Home in Maryland?

Working in the home improvement space as long as I have, you can bet I have a pretty good understanding of the importance of making sure your home is energy efficient, comfortable, and safe. In my experience, one area that often gets overlooked when it comes to home improvement projects to do with insulation is the crawl space. 

Whether you’re planning to insulate your crawl space for the first time or looking to upgrade your existing insulation, you may be wondering if a conditioned or unconditioned crawl space is the right choice for your home in Maryland. In this article, I’ll be taking a look at the differences between the two, the pros and cons of each, and the factors you should consider when making your decision. 


The Importance of Insulated Crawl Spaces 

The crawl space of your home is an often overlooked but important area when it comes to energy efficiency and comfort. A crawl space is an often forgotten area located under a raised foundation home. It’s not as spacious as a basement, hence the name “crawl” space, but it’s still an important part of your home. It’s usually accessed through a small opening in the floor of your home, like a crawl space door or vent. It’s used for accessing important systems like plumbing, electrical, and HVAC, as well as providing structural support for your home. Not all homes have crawl spaces though, some have full basements or slab foundations instead.

A properly insulated crawl space can help to keep your home warm in the winter and cool in the summer, which can lead to significant energy savings on your heating and cooling bills. In fact, proper home insulation can save you on average 15% in energy bills each year 

Insulating your crawl space can also help to prevent drafts, improve indoor air quality, and reduce the risk of mold and mildew. By investing in an insulated crawl space, you can not only save money on your energy bills but also improve the overall comfort and health of your home.


What is a Conditioned Crawl Space?

A conditioned crawl space, also known as a sealed, unvented, or closed crawl space, is designed to keep your house at a consistent temperature year-round while also keeping out the not-so-good stuff like drafts and moisture. It allows air from your home to flow through it in a sealed space, and then vents the used air outside, keeping your crawl space fresh and clean. This can make a huge difference in the overall comfort of your home and it’s a great way to improve energy efficiency. Think of it like giving your crawl space a little upgrade. 

A conditioned crawl space helps to maintain a consistent temperature throughout the home, which can reduce the strain on your HVAC system and lower your energy bills. Also, by controlling the humidity level, it can reduce the risk of mold and mildew growth, which can improve indoor air quality and the overall health of your home.

The insulation types that are commonly used in conditioned crawl spaces are spray foam and fiberglass batts. Spray foam insulation is a great option as it creates an airtight seal that effectively blocks drafts, while fiberglass batts are an economical and easy-to-install option.


  • Improves air quality in your home
  • Reduces heating and cooling costs
  • Reduced risk of mold and mildew
  • Keeps your crawl space dry 
  • Improved comfort in your home 
  • Better access to maintenance 


  • Can be costly to install 
  • More complex to install and maintain than an unconditioned crawl space
  • Less storage room in your crawlspace


What is an Unconditioned Crawl Space? 

An unconditioned crawl space is a type of crawl space that is not connected to the home’s heating and cooling system. It’s not insulated, and the temperature and humidity levels are not controlled. An unconditioned crawl space is a cost-effective option for homeowners who are looking to keep their expenses low.

One of the biggest benefits of an unconditioned crawl space is cost savings. Since it does not require additional insulation, HVAC, and humidity control systems, it can be less expensive to install and maintain. Additionally, an unconditioned crawl space is easy to access for maintenance and repair of the systems located in the crawl space, such as plumbing and electrical systems.


  • Saves costs on installation 
  • Easy access for maintenance and repair of the systems located in the crawl space 
  • Additional storage or workspace
  • Simple to install and maintain 


  • Reduced energy efficiency
  • Increased risk of mold and mildew
  • Increased difficulty in maintaining and controlling the temperature in the home
  • Reduced indoor air quality


Crawl Space Insulation Considerations 

When it comes to insulating your crawl space, there are a few important factors to consider. One of the most important considerations is the climate of your area. Living in Maryland, we experience mild weather year-round, but it’s not uncommon to experience major swings in temperature throughout the year. That’s why a conditioned crawl space is a great option for Maryland homes to help to maintain a consistent temperature throughout the home. This in turn reduces the strain on your HVAC system and lowers your energy bills. 

Another important consideration is your budget. A conditioned crawl space requires additional insulation, HVAC, and humidity control systems, which can lead to higher costs. An unconditioned crawl space, on the other hand, is relatively simple and inexpensive to install and maintain.

The age and condition of your home are also important factors to consider. If you have an older home with a poorly insulated crawl space, upgrading to a conditioned crawl space may be the best option to improve the energy efficiency of your home. However, if you have a newer home with a well-insulated crawl space, an unconditioned crawl space may be a more cost-effective option.

Proper ventilation and moisture control are important for both types of crawl spaces. Proper ventilation helps to prevent mold and mildew growth, while moisture control helps to prevent wood rot and other structural damage. The role of the home’s HVAC system should also be taken into account when making the decision of conditioned vs unconditioned crawl space, as a conditioned crawl space can be integrated with the HVAC system, while an unconditioned crawl space may require a separate system. 


Need Help with Your Crawl Space? Talk to the Professional at WoW 

Insulating your crawl space is an important step in improving the energy efficiency, comfort, and health of your home. For most homes, we recommend a conditioned crawl space because its benefits far outweigh any disadvantages (and there aren’t many anyway!) 

If you’re unsure whether a conditioned or unconditioned crawl space is right for you, talk to the team at WoW today. We can help you make an informed decision to best suit the needs of your Maryland home. Get in touch today and see how WoW can save you money and improve the overall comfort and health of your home.

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