Why Is One Room in My House So Hot?

women sitting in hot room in house

With summer fast approaching, it’s time to contend with that one hot room in your house you’ve been avoiding. You know the one, where it always feels 10 degrees hotter than the rest of your home, even with the AC blasting. 

Temperature fluctuations are a common problem in Massachusetts homes. Thankfully, there’s usually a simple solution. Keep reading to find out what causes a hot room in the summer and how you can solve the problem.

You Need More (or Better) Insulation

Most people think about insulation as something that keeps houses warm in the winter. But insulation is just as important for keeping heat out in the summer. Home insulation works by slowing down heat transfer. In the summer, it stops outside heat from penetrating your home. If certain rooms lack insulation, or if the insulation has been compromised, heat will flow right in, warming that room up while the rest of the house stays cool. 


Around 90% of houses in the US are underinsulated, so if you struggle with temperature fluctuations, insulation issues are likely the problem. Neeeco can evaluate your insulation and look for problem areas with a no-cost Mass Save® Home Energy Assessment. If you need an upgrade, we can help you save 75-100% with Mass Save insulation rebates.*

Hot Air Is Coming in Through Leaks

Insulation is key to maintaining a consistent temperature throughout your home but it’s only one piece of the puzzle. Air sealing works in tandem with insulation to stop air from moving freely into and out of your home. If you have leaks affecting a specific room in your home, hot air could be pouring in, raising the temperature. 


During your no-cost Mass Save Home Energy Assessment, we’ll look for air leaks that could be contributing to your comfort problems. You may qualify for no-cost air sealing in addition to 75-100% off an insulation upgrade.*

Your AC Is Not Meeting Your Needs

Your air conditioning system will of course impact your home’s temperature. If you have central air conditioning that keeps most of your house cool but one room or even your whole second floor stays hot, you might need to install supplemental cooling. A mini split heat pump is a great option that can be installed in any room in your home without ductwork and will deliver cooled air directly into the room it’s installed in. Mini split heat pumps double as heating systems in the winter, so you get heating and cooling in one. 

We can help you decide whether installing a mini split heat pump makes sense for your home during your no-cost Home Energy Assessment. You may be eligible for up to $16,000 in Mass Save heat pump rebates to reduce the upfront cost!* Heat pumps also qualify for up to $2,000 in federal tax credits through the Energy Efficient Home Improvement Credit. 

*Some restrictions apply. Offers are subject to change or cancellation. Visit MassSave.com/HEA for full details.

Get to the Bottom of the Problem with a No-Cost Home Energy Assessment

A Home Energy Assessment is the first step toward solving temperature problems and achieving whole-home comfort. Neeeco is the go-to home energy expert in Massachusetts and we can help you get to the bottom of problems like one hot room in the house or a hot second floor with a no-cost Mass Save Home Energy Assessment. We can also help you save on the upgrades you need with Mass Save rebates and incentives.

Solve comfort problems fast! Call 781-309-7540 or contact us for a no-cost Home Energy Assessment.