Autoclaved aerated concrete (AAC) is a type of precast concrete composed of natural raw materials. Autoclaved Aerated Concrete (AAC) is a lightweight foam concrete building material suitable for making construction blocks.Based on German technology and produced in Nepal itself, AAC Itta is the best alternative to red bricks.

Resistant to heat, sound, fire and earthquakes, AAC blocks are also lighter yet stronger than traditional red bricks. It is easier to use, saves time and money in construction and provides better results as well.

Autoclaved Aerated Concrete is an eco-friendly and certified green building material which is lightweight, load-bearing, high-insulating, durable building blocks and 3 times lighter when compared to red bricks. It is easier to use, saves time and money in construction and provides better results as well.

Benefits of AAC Block uses:
> Easily Installation
> Reduce Time on Construction
> Eco-Friendly
> Light Weight and Strong
> Earthquake Resistance
> Heat and Sound resistant
> Uniformity

Technical Comparision between AAC Itta and Clay Bricks as follows:
- Breakage: AAC Itta : 2-3%; Clay Bricks: 10 - 15%
- Cement Consumption:  AAC Itta :35-40 kg/m3; Clay Bricks: 60-70 kg/m3
- Money Saved: AAC Itta :upto 30%
- Dry density: AAC Itta : 650-750 kg/m : very light weight ; Clay Bricks: 1800 kg m : very heavy
- Variation in size :  AAC Itta : 1.5 mm (+/-); Clay Bricks: 5 mm (+/-)
- Compressive Strength : AAC Itta : 3-4 N/mm ; Clay Bricks: 2.5-3 N/mm
- Fire resistance (8” wall):  AAC Itta :  Up to 6 hours ; Clay Bricks: Around 2 hours
- Energy saving:  AAC Itta :  Approximately 30% for heating and cooling
- Thermal insulation: AAC Itta :  0.16-0.18 w/m K; Clay Bricks: 0.81 w/m K

Average price of AAC Block:
- AAC Block Size: 4 inch (600 x 200 x 100mm): starts from Rs. 130-150
- AAC Block Size: 6 inch (600 x 200 x 150mm) : starts from Rs. 190-230
- AAC Block Size: 8 Inch (600 x 200 x 200mm) : starts from Rs. 260-300
The price range varies from company to company.

Some of the top AAC Block Suppliers and manufacturers in Nepal area as follows:

1. Aero Bricks Nepal (Aero Lite AAC Block)
Address:Valley Complex (Valley Cold Store), Kathmandu-16, Nayabazar
Phone: 01-4386165, 9802075764

2. AAC Itta Udyog Pvt. Ltd.
- Address: Charkhal, Dillibazar, Kathmandu, Nepal
- Phone: 977 - 01- 4421166, 980-1042222

3. AAC Lightbricks block
Address: Pashupati Vision Building, Pingalasthan, Gaushala, Kathmandu
Phone: 01-4113596 , 9801235440 , 9801235441

4. AAC Nepal Traders Pvt. Ltd.
- Address: Pulchowk, Lalitpur, Nepal
- Phone: 977-9810364666

5. AAC Blocks Industries Pvt. Ltd
Address : Teku, Kathmandu, Nepal
Phone: +977-1-4239600

6. ASU Construction Pvt. Ltd.
Address: Pepsicola, Jadibuti, Kathmandu, Nepal
Phone: +977-9801080330

5. TRADE Empire
- Address: Manohara Planning, Bhaktapur
- Phone: 9802316981, 9802316983, 9802316984