A commissioning record exists to prove one thing: the system performs against design intent. Flow rates, temperatures, pressures and settings, measured and written down at the moment they are read. This page covers what to capture, a free heating system commissioning checklist, and the MCS documentation that unlocks the grant.
Template · HVAC
HVAC commissioning records done right.
An HVAC commissioning form captures actual performance against design intent: flow rates, temperatures, pressures and settings. This page covers what to record, a free checklist, and MCS heat pump documentation.
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Why it matters
Design values versus actual readings
A commissioning record compares design parameters with actual measured values. For MCS heat pump installs, records must be retained or the customer cannot claim the Boiler Upgrade Scheme grant, currently £7,500 for an air source heat pump. Records also protect warranty cover for installer and customer alike.
What to capture
Every commissioning form should record
- 1
System and hydraulics
Make, model and serial of every component. Design versus actual flow rate, static pressure, expansion vessel pre-charge, fill pressure, flushing and inhibitor dose.
- 2
Performance and emitters
Flow and return temperatures, delta T, refrigerant pressures where accessible. Per-radiator and per-zone balancing, lockshield settings and UFH manifold flow rates.
- 3
Controls and handover
Weather compensation curve, flow set point, DHW and anti-Legionella cycle, zone valve operation, smart controls registered and handed to the customer.
The write-up trap
Numbers fade after the job
Engineers who jot readings on scrap paper and complete the form later round, approximate or confuse them with another system. Implausibly neat values, delta T exactly 5°C, raise questions under warranty claims. Capturing readings at the moment of measurement keeps them accurate.
How Quickler helps
Speak readings, PDF before you leave site
Engineers complete the form via WhatsApp during the commission. Readings are spoken as voice notes and transcribed, photos attach to each item, and the PDF generates immediately, timestamped and tied to the address.
The short version
- An HVAC commissioning record captures design values versus actual measured values. The comparison is the entire point.
- An hvac commissioning form template uk built for heat pumps must satisfy MCS MIS 3005, or the customer loses the Boiler Upgrade Scheme grant, currently £7,500 for an air source heat pump.
- A heat pump commissioning form filled in at the moment of measurement beats one written up from memory at the van.
- Building Regulations Part L and the CIBSE codes, Code A for air distribution and Code W for water distribution, set what commercial work must record.
- Proper mcs commissioning documentation is the evidence that sign-off is warranted, not the sign-off itself.
- The output is a complete hvac commissioning record uk engineers and assessors can rely on.
Why it matters
Commissioning records are not optional
Documentation has always mattered for commercial and public sector HVAC. Building Regulations Part L and the CIBSE commissioning codes, Code A for air distribution and Code W for water distribution, set out what must be measured and recorded.
For residential work, the stakes changed when heat pump installs became grant-funded. MCS MIS 3005, the standard governing heat pump installation, requires commissioning in line with manufacturer instructions and retention of the records. No records, no MCS registration. No registration, no grant, currently £7,500 for an air source heat pump. A missing form has a direct cost to the customer. It bites on warranty too: most manufacturers will not honour a claim on a system that was not correctly commissioned and documented. The records protect the installer as much as the customer.
What to capture
Everything a commissioning form must record
The items vary by system type, but the structure holds. System identification: make, model and serial of every major component, the heat pump, cylinder, buffer tank, circulation pump and expansion vessel, plus address, date, engineer name and certification number.
Hydraulic system: design versus actual flow rate at the primary circuit, static pressure, expansion vessel pre-charge against system design pressure, relief valve set point, fill pressure, and evidence of flushing and inhibitor dose with product, concentration and pH.
Heat pump performance: flow and return temperatures at design conditions, delta T across the heat pump, suction and discharge refrigerant pressures where accessible, defrost cycle and fan operation confirmed, boundary noise check where relevant.
Emitters and controls: per-radiator design output, flow rate, lockshield and balancing valve settings, UFH zone flow rates and manifold pressure, the weather compensation curve, flow set point, DHW and anti-Legionella cycle, and controls handed to the customer.
The checklist
Heating system commissioning checklist
Use this as the spine of any heat pump commissioning form. Each line is a reading or a confirmation, captured on site.
- All components identified by make, model and serial number
- System flushed and inhibitor dosed, pH tested and recorded
- Fill pressure set and expansion vessel pre-charge checked and recorded
- Pressure relief valve set point confirmed
- Primary circuit flow rate measured and compared to design
- Delta T across the heat pump measured and recorded
- Flow and return temperatures at design conditions recorded
- Refrigerant circuit pressures recorded where applicable
- All radiators balanced, lockshield settings recorded per radiator
- UFH manifold flow rates set and recorded per zone
- Weather compensation curve configured
- DHW set point and anti-Legionella cycle confirmed
- Zone valves and pump operation confirmed, controls handover completed
- MCS registration information recorded for heat pump installs
- Commissioning engineer signature and date
The write-up trap
Numbers fade after the job
Commissioning is a flood of numbers. Flow rates, temperatures, pressures, delta T, refrigerant readings. Recording them accurately means capturing them at the moment of measurement, not later.
The classic failure: an engineer takes readings mentally or on a scrap of paper during the commission, then completes the form at the van or at home that evening. Some values transfer cleanly. Others get rounded, approximated, or confused with a different system done the same week.
A form full of fabricated or approximate values does not do its job. When a system underperforms and the customer claims warranty, the manufacturer checks whether the figures make physical sense. Implausibly neat readings, delta T exactly 5°C, flow rate exactly 20 l/min, raise questions that honest readings taken at the time never would.
How Quickler helps
Speak the reading, PDF before you leave
Quickler is rooted in UK compliance but works anywhere WhatsApp does, and it runs any inspection or checklist, not just one trade. It is used across English-speaking markets including the UK, Ireland, the United States, Canada, Australia and New Zealand. Quickler works in any country; the MCS and Boiler Upgrade Scheme points above are the UK context for this form.
Engineers complete the form via WhatsApp during the commission. Each item is prompted in sequence. Readings are spoken as voice notes, "flow temperature 45.2 degrees, return 40.6", and transcribed automatically. Photos of manifold settings, pressure gauges and controls screens attach to the relevant item. At the end, the PDF generates immediately, the customer copy goes out by one-click email, timestamped and tied to the address. The dashboard shows commissioning status across every live job. See the inspection report template and field reporting software, or facilities management inspection software.
Questions, answered
What must an HVAC commissioning form record?
System identification (make, model, serial number), design parameters versus actual measured values for flow rates, temperatures and pressures, radiator or emitter outputs, refrigerant charge records where applicable, controls settings, and the commissioning engineer's name and signature.
Is commissioning documentation required for MCS heat pump installs?
Yes. MCS MIS 3005 requires that heat pump installations are commissioned in accordance with the manufacturer's instructions and that records are retained. Without valid mcs commissioning documentation the installation cannot be registered with MCS, which affects the customer's eligibility for the Boiler Upgrade Scheme grant.
What is the difference between commissioning and sign-off?
Commissioning is the process of setting a system to work and verifying it operates to design intent, measuring actual flow rates, temperatures and pressures and comparing them to design values. Sign-off is the formal declaration that commissioning is complete and the system has been handed over to the client.
Can I record HVAC commissioning readings by voice note on site?
Yes. Recording readings as a voice note at the point of measurement is more accurate than transcribing them later. Engineers using Quickler speak readings into WhatsApp during the commissioning workflow, the system transcribes them automatically and they populate the record.
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