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07854 066 771 
01392 435555 Exeter Office 
01208 822033 
Bodmin Office 

What exactly is air tightness testing? 

Air tightness testing is a way to measure and quantify the air leakage of a building. Too much air leakage leads to heat loss resulting in higher C02 emissions. Reducing C02 emissions is the purpose of the ‘Part L’ new building regulations through air tightness testing, air leakage testing and air permeability testing. 

Why carry out an air tightness test? 

Air tightness testing of a proportion of all new domestic housing is a legal requirement in accordance with the guidance given in Part L1A – Conservation of fuel and power in new dwellings of the Building Regulations. Also testing the air tightness of existing dwellings can highlight areas of problems that can be treated cost effectively to improve the energy efficiency of the dwelling as a whole. 
Air Testing SW Ltd offers full iATS registered air tightness testing, mechanical air flow rate or extractor fan testing, SAP calculations and SBEM calculations at competitive prices. All of our equipment if fully UKAS calibrated. We provide same day certification and reporting and can even offer you tailored advice to help your dwellings comply with the regulations at minimum cost and hassle. 

About us 

Based on many years of experience, we offer air tightness testing from our offices based in Exeter and Bodmin, covering Cornwall and the whole of the South West. 


We offer a full range of testing services, including air tightness testing, extract testing, sound/acoustic testing, SAP & SBEM calculations and more. 


"I always found Air Testing SW to do what they say they’re going to do when they say they’re going to do it. Always turned up when they said they were going to, completed the work diligently and on time and supplied the certification the same day. All in all, faultless." 

Get in touch 

We are always happy to hear from new clients who might benefit from our air testing services. Based at our offices in Exeter and Bodmin, we cover Cornwall and the whole of the Southwest and further afield. 
14 Holmes Way, Bodmin, Cornwall PL31 2TZ 
07854 066 771 

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