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For many rental property owners, energy efficiency can feel like a low priority—especially when tenants are responsible for heating costs. If the tenant pays the utility bill, where is the return on investing in insulation or air sealing?

It’s a fair question. In practice, however, insulation improvements often provide benefits that go well beyond monthly energy savings.

It’s Not Just About Energy Bills

While insulation and air sealing can reduce heating costs, the biggest advantages for rental properties are often non-utility related. These include fewer maintenance issues, improved tenant comfort, reduced moisture problems, and better long-term durability. In many cases, insulation upgrades help protect the property itself.

Comfort Drives Tenant Satisfaction

Even when tenants pay their own heating bills, comfort remains a major concern. Common complaints include cold floors, drafty rooms, uneven temperatures, and spaces that are difficult to heat—issues often tied to air leakage and insufficient insulation.

Addressing these problems typically leads to more consistent temperatures, fewer drafts, and improved comfort. Comfortable tenants are more likely to stay longer, reducing turnover and vacancy costs.

Fewer Winter-Related Problems

In colder climates like Wisconsin, poorly insulated buildings are more likely to experience ice dams, roof-edge ice buildup, attic moisture issues, and even frozen pipes during extreme weather. These are not just comfort concerns—they can become maintenance and repair problems.

Improving insulation and air sealing helps reduce heat loss into attics and wall cavities, lowering the likelihood of these issues.

Protecting the Building Over Time

One of the most overlooked benefits of insulation is its role in moisture control. When warm indoor air leaks into cold spaces, condensation can occur, affecting attic insulation, roof sheathing, framing, and interior finishes. Over time, this can lead to deterioration.

Reducing air leakage and controlling heat movement helps protect the structure and extend the life of building components.

Marketability and Rental Appeal

Energy-efficient units can also be easier to rent. Even when tenants pay utilities, many still ask whether a unit is expensive to heat, whether it feels drafty, or whether upgrades have been made. Properties known to be comfortable and efficient often have an advantage in competitive markets.

When Improvements Make Sense

Insulation upgrades are often most practical when units turn over, renovations are planned, or roofing and siding work is already being completed. Targeted improvements—such as attic air sealing or rim joist insulation—can often be completed without major disruption.

A Practical Perspective

While property owners may not see direct utility savings when tenants pay for heating, insulation and air sealing can reduce maintenance issues, improve tenant satisfaction, protect the building, and support long-term property value. For many, those benefits make insulation upgrades worth considering.

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Keep the Feature – Lose the Leak In previous posts, we established a few things: Fireplaces look great They’re not exactly energy all-stars And sometimes… they’re quietly working against your heating system But this isn’t a “never use your fireplace again” speech. It’s about using it smarter . Start With the Simplest Fix: Close the Damper Let’s begin with the obvious—because it’s often overlooked. Make sure the damper is fully closed when the fireplace isn’t in use Check it occasionally—it doesn’t always seal as tightly as you think A damper is better than nothing… …but it’s not an airtight solution. Think of it more like “slowing the leak” than “stopping it.” Take It a Step Further: Seal the Chimney When Not in Use If you rarely use your fireplace, this is where real improvement happens. Options include: Chimney balloons or plugs Top-sealing dampers (installed at the chimney cap) These: Block airflow more effectively Reduce heat loss significantly Help keep cold air from dropping into the house Just one rule: If you seal it—make sure you remove it before using the fireplace. (That’s a bad day otherwise.) Glass Doors: Helpful, With Limits Glass doors can: Reduce the amount of warm air pulled out of the house Improve safety (sparks, pets, kids) But they: Don’t make a fireplace “efficient” Don’t fully stop air movement Good upgrade—just don’t expect miracles. If You Use It Often, Use It Wisely For those who actually burn wood regularly: Burn dry, seasoned wood Use smaller, controlled fires Close the damper once the fire is completely out Avoid leaving it open overnight “just in case” And remember: Most traditional fireplaces still lose more heat than they produce. (Yes… even when they feel warm sitting right in front of them.) Consider an Upgrade (If It’s More Than Occasional Use) If the fireplace is part of your routine, not just a holiday guest appearance: You might look at: Fireplace inserts Sealed combustion units These: Burn more efficiently Reduce air loss Actually contribute to heating the space Now you’re moving from “ambiance” to “appliance.” Or… Rethink the Role Entirely If the fireplace isn’t used much: Seal it properly Turn it into a design feature Think: Artwork Plants Decorative logs or candles You keep the character… without the energy penalty. The Bottom Line A fireplace doesn’t have to be a problem. But left alone, it often is. The goal isn’t to get rid of it— it’s to decide what role it plays in your home. Occasional use → manage the airflow Frequent use → improve the system No use → seal it and enjoy the look Final Thought Fireplaces are great at creating atmosphere. Just don’t let them quietly heat the outdoors while you’re paying the bill. Thinking about a gas fireplace? Check out the pros and cons in this post .