Top 5 Most Energy Efficient Window Air Conditioner

Top 5 Most Energy Efficient Window Air Conditioner

As the chill in the air gradually fades and gives away to sunshine our hearts start singing the songs of spring and summer. Although, we cannot wait long enough for each winter to be over and the summer to set foot in town, we always seem to forget the heat and humidity the mid-summer months bring along with them.

We never seem to find that one air conditioning cum heating system that is perfect for our room size. For most medium-range devices, either the air conditioner is too weak, or the heating game is unimpressive. There are the exceptional instances when we do locate powerful air conditioning systems, but they leave a significant carbon footprint that makes us feel guilty about enjoying the cool air.

That is why every year millions of homeowners embark on the journey of finding the most energy efficient window air conditioner for their abodes before summer hits the cities.

What if we told you, there is not one, but five potential ways you can remain warm and cozy this winter and cool during the summer? This eliminates the difficult window air conditioner vs. heat pump consideration before heading out to the shop on a limited budget. This list will present the top five air conditioners from the market for different room sizes and varying installation requirements.

Top 5 Most Energy Efficient Window Air Conditioner’ orientation


The Chill Series from Friedrich is one of the most popular air conditioners ranges in the market today. It is a premium line that comes with first-class service and warranty. One of the unique features of the EP12G33B is its programmable nature. You can program 24-hours of function (heat, cool and dehumidify) in the unit.

Moreover, you can enjoy guilt-free cooling and heating all year long with the 11500/12000 BTU unit. It can cool a 525 square foot room perfectly. It uses a new environmentally friendly refrigerant R32 that has zero ozone depleting effect and considerably low global warming potential. The presence of a programmable auto-start in the also helps you save considerably on energy costs. The 9300/11200 BTU heating mechanism is perfect for the city winters that seem to take the warmth out of life.

Here are a few reasons you should consider the compact version of the 18000 BTU window air conditioner with heat pump –

  • One of the first things you will notice about the Friedrich Chill Series EP12G33B is the silence during operation. The lack of rumbling shows how far heating-cooling technology has come and why you should upgrade your regular heater/cooler.
  • It is one of the few models in the market that comes with the entire installation hardware. The window air conditioner 15 inches wide can fit into walls 9-inches deep, or you can mount it on windows like conventional window-cooling units.
  • Most importantly, you can forget about resizing your window width to suit the installation space requirement of the unit. It comes with expandable panels that help in a perfect installation without any leakage of the cool air. You can save a fortune on installation cost of window air conditioner this year.
  • It includes a 2-speed fan setting, heating, and cooling options. The Friedrich Chill Series EP12G33B is perfect for a big home with bigger than average rooms. It has 4-way air control that cools an expansive space faster than the average powered cooling machines.
  • This air conditioner cum electric heater has ‘Check Filter’ alert that indicates the precise time each filter requires changing. The Chill Plus series has stale air exhausts that keep the room fresh and comfortable all year long.

The city life is becoming more compact and stressful each day. Living in the concrete jungle takes away quite a few pleasures of life, there is no reason you should compromise on the quality of the air you breathe. The Friedrich Chill CP05G10 gives you a compact and budget-friendly way to breathe fresh air in the city as long as you are at home.

How is this mini variant of the 24000 BTU window air conditioner with heat pump better for your home?

  • It is very lightweight, and the installation process is straightforward. However, it has three cooling speeds and three fan settings.
  • The Friedrich Chill CP05G10 is completely washable, and it has anti-microbial filters to trap the microbes and small pollutants that may enter your room through the system. It also prevents fungal and bacterial growth.
  • The standard installation hardware ships with the product making it super easy for anyone to install it in the walls or the windows.
  • The side curtains of the air conditioner make for perfect fitting of the system on windows. The presence of EntryGuard ™ protects against possible intruders. The Friedrich Chill CP05G10 makes the indoor air quality better and your home safer than before.
  • The new model comes with a Money Saver ® setting that only operates the fan while cooling. Apart from getting the best prices on window air conditioners, you can enjoy lower energy bills the whole summer and winter.
  • There is an additional stale air exhaust, which ensures enduring freshness inside your room 24/7/365.

The Koldfront WAC12001W 12,000 BTU 208/230V Heat/Cool Window Air Conditioner is a complete heating and cooling system your home needs right now, to remain welcoming, snug and refreshing. This is a rather compact but powerful system that can cool and heat room spaces up to 550 square feet. 

It is perfect for the larger than average rooms that require a gentle touch of coolness in the summers and a hug of warmth during the winter months. Hundreds of city dwellers use this Koldfront 12000 BTU model in the living rooms to create that cozy ambiance a home should possess.

Why is the Koldfront WAC12001W the leading choice of green architects and environmentally conscious homeowners?

  • It comes with 12000 BTUs of cooling power and 11000 BTUs of heating power.
  • It is a dual function AC that has a 4-way fan, and two speeds to circulate the cold air throughout the room. The high power and improved circulation ensure that the cold air reaches all corners irrespective of the furniture load of the room.
  • The Koldfront WAC12001W 12,000 BTU 208/230V Heat/Cool Window Air Conditioner cost a lot lesser than older air conditioner models and central air conditioners. It can eliminate the hotspots inside rooms very effectively.
  • The sleep function in the KoldFront model saves energy and keeps the room comfortably cool. This new addition makes the Koldfront WAC12001W Window Air Conditioner more efficient than any 18000 BTU window air conditioner with heat pump.
  • It is compatible with the Koldfront sleeve WTCSLV. The WAC12001W is cost-effective and efficient.

Note: the heating function of the Koldfront WAC12001W 12,000 BTU 208/230V Heat/Cool Window Air Conditioner can only supplement the existing heating options inside a house. It cannot function autonomously to keep an entire home warm.

The new hOmeLabs Window Air Conditioner is a heavy-duty cooling mechanism for smaller but hotter rooms. 

If your room is small, 150-square feet room does not have enough ventilation; the 5000 BTU unit is perfect for it.

It is indeed perfect for a small living room, a compact bedroom and an RV.

The product from hOmeLabs comes with best prices on window air conditioners instant customer service warranty period of 2 years and a money-back guarantee for six months succeeding purchase. 

The hOmeLabs Window Air Conditioner – 5000 BTU AC Unit with 7 Speed Fan is ideal for adding a blast of fresh air to crowded rooms and smaller spaces that are in dire need of some serious cooling.

What makes this window air conditioner 12 inches height stand out among other competitors?

  • This is a 12-inch unit that can function inside small homes and RVs alike. It requires a window width between 23-inches and 36-inches for installation.
  • The hOmeLabs Window Air Conditioner – 5000 BTU AC Unit has reusable Eco AC filters. It keeps your home safe and keeps the microbes outside. When the fresh air passes through these, the microbes remain on the outer side of the filter. You can wash them with dish soap and warm water to clean the dirt.
  • The electric window system is easy to install. You will find filters, side panel leaf covers, window seal foam and support brackets inside the packaging. Several guides and reviews can help you with the drip-free installation.
  • It is an eco-friendly mechanism that keeps the indoors comfortably cool during the summers and optimally warm during the winters.

The Frigidaire 5,000 BTU Mini-Compact Air Conditioner is ideal for small rooms. Sometimes, central air conditioning does not cool all rooms inside a home optimally. The budget-friendly and environmentally-friendly Frigidaire product are perfect for those situations. It has several mechanical settings and controls. In spite of the excellent cooling capacity, it is quiet throughout the night. You can expect 24/7 cooling effect from this small window-mounted 5000 BTU air conditioner.

Here are the few features that beg for consideration from the smart buyers around the world –

  • The Frigidaire FFRA0511Q1 is economic, and the cost of operations is not much either.
  • It is light and mounting it on any window is a one-person job.
  • It can dehumidify a room by up to 0.8 units in 60 minutes, and it can cool a room of 150-square feet almost instantly.
  • The Frigidaire FFRA0511Q1 has mechanical controls with a low power start-up option.
  • It uses R410A refrigerant that is eco-friendly, and it has anti-bacterial mesh filters that keep the indoor environment safe for your family. It is a pocket-smart solution for your allergy problems.
  • This window air conditioner 12 inches height is a mini-monster as far as fast cooling and energy conservation are considered.
  • The Frigidaire FFRA0511Q1 has additional power outage safety features that protect your home. It starts operating at the original power setting once the power comes back.

Relax, Enjoy & Flow With The Air

These five most energy efficient window air conditioner options make it difficult for any homeowner to pick just one. Each one is unique and contributes to power savings in a salient way. Whether it is the Effortless Restart option of the Frigidaire FFRA0511Q1 unit or the Check Filter option of the Friedrich EP12G33B Series, there is something for each shopper in this list.

At Comfy Home Corner we are dedicated in providing the best tips and product reviews to assist you with creating a better environment for your home.