While you can install a furnace in the attic, it’s not always the best option. Depending on the climate and the type of furnace you have, it can come with certain challenges that mean you may be better off installing it somewhere else.
At Genuine Comfort, we want you to have the tools you need to make an informed decision about where to install your furnace. Keep reading to learn more about why you may want to put your furnace in the attic, the challenges that come along with it, and which types of furnaces are best for attic installation.
Like always, it’s best to consult with an HVAC professional before proceeding with any major projects. If you have any further questions, feel free to contact us today to speak with one of our experienced technicians.
Summary
Today, I want to answer a common question: Can you put a furnace in the attic? The short answer is yes, you absolutely can. However, depending on the situation, it may not always be the best idea. Here’s why:
High-efficiency furnaces like 90% and above produce a lot of condensation. If your attic isn’t properly insulated, especially in the colder climates, you could run into issues like frozen or leaky drain lines, leading to serious damage over time. That’s why, in many cases, I’d recommend an 80% furnace, if it’s an option. These don’t produce condensation, making them a better fit for attic installations.
Of course, every home is different, so it’s always best to consult a professional to make sure that your system is installed correctly and efficiently.
Why Put a Furnace in the Attic?
First, let’s explore some possible reasons to install your furnace in the attic. One of the most significant benefits of this placement is that it can maximize usable space in the living area. If your attic is mostly used for storage, you don’t have a basement or crawlspace, or you don’t have a good place for the furnace on the main floor, putting it in the attic may be an attractive option.
Furthermore, putting your furnace in the attic can help improve airflow distribution in some home layouts. It can also reduce the length of ductwork, potentially reducing heat loss and lowering installation costs.
The Challenges of Attic Furnace Installation
However, attic furnace installation can also come with some challenges, including:
- Temperature extremes: Attics often experience temperature swings, becoming hot in the summer and cold in the winter.
- Maintenance accessibility: When the furnace is in the attic, it may be harder for HVAC technicians to access and service the unit.
- Insulation and ventilation needs: Your attic must be properly insulated and ventilated to support your HVAC system.
High-Efficiency Furnaces and Attic Installation
High efficiency furnaces — those with an AFUE of 90 percent or higher — may use less energy; however, they also produce condensation as part of their operation. The risks associated with installing these furnaces in the attic include frozen condensate lines in cold climates, along with leaks and water damage from improper drainage.
This means you’ll need to ensure proper slope in drain lines and add extra insulation to your attic to protect against water leaks and freezing temperatures. Moderate climates are more suitable for this type of furnace.
Why an 80% Furnace Might Be a Better Fit
While an 80 percent AFUE furnace is not the most efficient option, it may be more compatible with attic spaces, especially in cooler regions. Because they don’t produce condensate, they come with fewer drainage complications and a lower risk of freezing. If you plan on putting your furnace in the attic, consider opting for an 80 percent furnace rather than a 90 percent one.
The Importance of Professional Evaluation
If you’re thinking about upgrading or relocating your furnace, it’s important to seek a professional evaluation. Every home has different structural and environmental factors, and a qualified HVAC technician can assess your attic insulation and space, recommend the best furnace type, and ensure safe, efficient installation.
Expert Furnace Installation by Genuine Comfort
At Genuine Comfort, we want you to know that while installing your furnace in the attic is possible, it’s not always advisable. It’s essential to consult with one of our experienced technicians to determine the perfect HVAC solutions for your home. If you have questions about furnace installation or want to schedule a service appointment, contact Genuine Comfort today.
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