The ROI of Insulation & Air Sealing: How Much Can You Really Save? blog header image
May 16, 2025

Insulating and air sealing your house is one of the most cost-effective ways to improve its energy efficiency. Plus, it comes with huge savings. 

A well-insulated and tightly sealed home uses less energy for heating and cooling, which reduces your energy bills. Those savings add up fast—insulation and air sealing can pay for themselves in just a few years. 

Home Energy Medics has insulated hundreds of homes in the DC Metro area. We can help you calculate your expected savings and decide whether new insulation is worth it for your home.  

How Much Does It Cost? 

To understand the ROI of insulation, it's best to start with the upfront cost. But pricing isn’t one-size-fits-all. It depends on factors like:

  • The size and layout of your home

  • Which areas need to be insulated (basement, attic, walls) 

  • The type of insulation used (cellulose, spray foam, etc) 

  • The condition of any existing insulation

  • The complexity of the job

And just as important: the insulation contractor you hire. Lower-cost bids often skip critical steps like air sealing or ignore ventilation and moisture concerns, leading to reduced efficiency, missed savings, and potential long-term damage.

At Home Energy Medics, we take a comprehensive, whole-home approach that ensures your investment delivers real, long-term savings. 

Want to know what insulation will cost for your home? Contact us today for a personalized estimate. 

Rebates & Incentives Reduce Costs 

Right now, you can save thousands of dollars on new insulation with rebates and incentives. We can help you take advantage of: 

  • Up to $10,000 in EmPower Maryland insulation rebates

  • Up to $10,000 in Dominion Energy insulation rebates  

  • Up to $1,200 in federal tax credits for qualifying insulation and air sealing costs 

  • Up to $2,000 in federal tax credits for qualifying HVAC equipment and water heaters, which can be combined with the insulation tax credit for a total of $3,200 per year!  

What About the Savings? 

A well-sealed home that has the right amount of insulation properly installed will see significant utility bill savings. 

Studies show that homeowners can save an average of 15% on their heating and cooling costs by air sealing their homes and adding insulation in attics, floors over crawl spaces, and accessible basement rim joists. 

Those savings add up month to month. In most cases, your insulation and air sealing improvements will pay for themselves in just a few years. 

The Benefits Go Beyond Savings 

While lower bills are a big win, the return on investment in insulation and air sealing goes beyond energy bill savings. 

  • Comfort: Insulation and air sealing make your home feel better year-round. Warmer in winter, cooler in summer, and free from drafts and temperature inconsistencies. 

  • Health: Air sealing helps block out pollen, allergens, and moisture, reducing the risk of mold and improving indoor air quality.

  • Moisture & Pests: A tighter home keeps moisture and pests out, preventing costly damage.

  • Noise Reduction: Insulation can reduce outside noise, helping your home stay quiet and peaceful. 

Want to Save More? Start with an Energy Audit 

If you want to make the most of your insulation and air sealing upgrades, an energy audit is the place to start. 

At Home Energy Medics, our audits are incredibly thorough. We evaluate every inch of your home, including insulation levels, air leakage, moisture issues, duct performance, and even indoor air quality. It’s a full diagnostic that leaves nothing to guesswork.

This comprehensive approach ensures you get the right upgrades, in the right order, for maximum comfort, efficiency, and savings.

Get the most out of your insulation upgrade! Reach out to Home Energy Medics today.

Want to save more with insulation? 

Start with an energy audit! Schedule yours today. 

703-447-5379

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