Accurate ASHP Sizing for Efficient System Performance

TargetCO2 provides Pulse air tightness testing to support accurate air
source heat pump (ASHP) sizing across Devon, Cornwall and Somerset.

Air Testing for Heat Pump Sizing – This service is typically used when:

Installing an air source heat pump in an existing property
Replacing gas or oil heating with a heat pump
Completing heat loss calculations for system design
Planning retrofit insulation or building improvements
Verifying building air leakage before specifying a heating system
Wishing to avoid oversized heat pump systems and unnecessary running costs
Supporting retrofit coordinators, installers and heating designers
Assessing older and traditional buildings where assumptions are often inaccurate
Providing measured air permeability data rather than relying on estimated defaults

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Why Air Tightness Testing Matters for ASHP Sizing

When installing a heat pump, accurate heat loss calculations are essential. Assumed air leakage rates can result in oversized systems and unnecessary capital cost. A measured air permeability test provides real data for use within heat loss calculations and MCS design processes.

TargetCO2 uses Pulse air tightness testing, a fast and non-invasive method suitable for existing homes as well as new buildings. Because the system does not require large fan equipment or major preparation, it is particularly useful for retrofit heat pump installations where traditional fan testing may be impractical.

Our testing supports:

More accurate ASHP sizing
Improved heat loss calculations
Retrofit heat pump installations
Verified air leakage data for design

Measured air permeability. Informed system design. Local expertise.

Fast response. Clear communication. No obligation.

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What our customers think

Discover the experiences of our satisfied customers! Read their testimonials to learn how our services have made a positive impact on their businesses.

"Excellent customer service and professional support, would highly recommend.
"

Alexander Buscombe, Bideford Google review

"Fantastic job guys, Thank you very much!
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Gareth Meredith Google review

"Target C02 are an amazingly hard-working company, who always provide the best service and take great care of all their customers.
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Jenny Bowers Google review

"Professional, knowledgeable and always willing to go the extra mile. Fantastic service from start to finish. Thank you Target CO2 for your invaluable help and support.
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Lisa Harding, Bridgwater Google review

"From start to finish Targetco2 were very professional. Kept me updated all through the process. I would highly recommend them! And the workmanship was brilliant! Happy days!
"

Brian Beckett Google review

"Knowledgable and lovely guy, with great experience and efficiency advise.
We have found them to be very helpful in our quest to become much more energy efficient and kinder to the environment
Thanks Chris
"

Spanner Milton, Padstow Trustpilot