HVAC Tips

Thinking about installing a through-the-wall (TTW) air conditioner, but not sure if it’ll work in your mobile home, apartment, or condo? You’re not alone. Space constraints, building rules, and wall structure limitations make this a big question. But the good news is—it’s often doable with a little planning.

Can a through-the-wall air conditioner be energy-efficient? Can it save you money beyond your electric bill—like qualifying for federal tax credits or utility rebates? This guide dives deep into how wall-mounted AC units stack up when it comes to efficiency, regulations, and savings.

If you’re debating between a through-the-wall (TTW) and a window air conditioner, you're not alone. They’re both popular cooling solutions for homes that don’t have central air, but they couldn’t be more different when it comes to design, performance, aesthetics, and installation.

Just because your through-the-wall AC unit is built to last doesn’t mean it’ll stay efficient forever. With regular maintenance, you can extend its life, lower your energy bills, and avoid costly repairs—all with a few simple routines you can do yourself (and a couple that you shouldn’t).

Choosing a through-the-wall air conditioner isn’t just about BTUs and price tags—it’s about performance, durability, smart features, noise levels, and brand trust. In this guide, we break down three top contenders: LG, GE, and Friedrich.