heat pump

Air Tightness Testing for Heat Pump Sizing

Supporting accurate air source heat pump (ASHP) sizing for efficient system performance

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Pulse Air Testing | ATTMA-Aligned | ASHP Sizing Support

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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

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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
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    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.

    "Great communication, flexible on dates and reports that our local Building Control are happy with. Being able to point clients to a reliable tester makes our lives much easier."

    T. Davies Architect, Plymouth

    "As a self-builder I wasn’t sure what to expect.
    Everything was explained in plain English and we passed first time. The whole process was much easier than I’d anticipated."

    Self-build client, Truro

    "We needed a single new build tested at short notice. TargetCO2 gave us clear prep advice, came out when they said they would and the certificate was with Building Control the next day. We’ll be using them on all our future plots."

    M. Harris Builder, near Exeter