| SIZE (LxHxB) | 600mm x 200mm x 100mm,125mm, 150mm, 200mm & 230mm | 225mm x 100mm x 75mm |
| Structural Cost | Steel saving upto 15% | No Such Saving |
| Mortar Consumption / Cu.M with 1:6 | 0.5 Bag of cement ( due to Flat, even surfaces & less no. of joints) | 1.35 bag of cement ( due to irregular surface and more no. of Joints ) |
| Breakage | Less than 3% | Up to 15%. |
| Construction Speed | Speedy Construction due to its big size, light weight & easy to cut in any size or shape | comparatively slow |
| Quality | Uniforms & Consistent | Normally varies |
| Carpet Area | More due to less thickness of walls | Comparatively low |
| Availability | Any Time | Shortage in Monsoon |
| Energy Saving | Approx. 30% reduction in air - conditioned load | No Such Saving |
| Chemical Composition | Sond/Flyash used around 60 - 70% which reacts with line & cement to form AAC | Soil used which contains many inorganic impurities like sulphates etc. resulting In efflorescence |
| Precision in Size | Vorition 1.00 ( +/-) mm | Variation 3.15 (.1-) |
| Compressive Strength | 3.5 - 4.5N/mm2 ( As per IS:21B5 port III) | 2.5 - 3.0 N/mm2 |
| Sound Reduction Indexl (dB) | 45 for 20 mm thick wall | 50 for 230 mm thick wall |
| Thermal Conductivity (Kw-m/C) | It transfers heat between 0.21 to 0.42 W/mk | It transfer heat between 6-10 W/mk |
| Cost benefit factor | Savings up to 24% in structural cast due to reduction of dead load ( Subject to project design) | No Such Saving |
| Weight | 550 to 600 kg / Cubic Meter | 1950 to 2000 kg / Cubic Meter |
| Fire Resistance | 4 - 6 hrs depending on thickness | 2 Hours |
| Water Absorption | Should not be more than 10% of its weight ( If the block or Brick absorbs more water than the above specified limit, it causes adverse effect on the strength and durability | Should not be more than 20% of its weight |
| Moisture Resistance | Better than Red Brick | Average |
| Saving Plaster | Overall 35% cut down in the cost of plastering | No Such Saving |
| Environment Impact | Made up of ashes, thus does no soil is consumed | Around 32kgs of fertile soil Is used to produce one brick |
| Maintenance | Superior properties of AAC blocks reduces the maintenance cost | Very High |
| Water Using during Manufacturing | Low. only used for auto - cloying | High, need curing before use |
