4+ years of perfection in every project.
With a presence in 50+ global locations.
Mechanical services are central to the safety, comfort, and operational efficiency of modern buildings. From domestic mechanical installations to complex commercial and industrial systems, accurate mechanical estimating is essential for effective planning, budgeting, and execution.
At COMET Estimating, we specialise in delivering dependable mechanical estimating services across the United Kingdom. Our estimators analyse drawings, specifications, layouts, equipment schedules, and coordination requirements to calculate accurate material quantities, labour allowances, installation costs, and commissioning needs.
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Work with an estimating team committed to delivering accurate, on time mechanical estimates you can depend on.
Best Rating in your town in estimating business
Whether your project involves a small residential system or a large scale industrial mechanical installation, COMET Estimating delivers comprehensive mechanical cost estimates tailored to your project requirements.
We prepare mechanical estimates for residential developments, including HVAC systems, ductwork, piping, ventilation, and equipment installation, enabling accurate planning and cost control.
For offices, retail spaces, healthcare facilities, and multi storey commercial buildings, we provide detailed estimates that reflect system complexity, coordination needs, and compliance obligations.
For factories, plants, warehouses, and industrial facilities, we deliver detailed estimates covering heavy equipment, process piping, industrial ventilation, and specialised systems.
We estimate heating, ventilation, and air conditioning systems, including ductwork, air handling units, chillers, boilers, exhaust systems, and controls.
Our estimates include piping systems, mechanical connections, fittings, insulation, valves, and integrated mechanical services.
We provide cost estimates for equipment installation, testing, balancing, and commissioning to ensure systems are fully operational and compliant.
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Provide mechanical drawings, layouts, specifications, equipment schedules, and coordination requirements.
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Our estimators review all details and prepare an initial estimate covering materials, labour, equipment, and installation costs.
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You review the estimate and request any revisions. We refine the estimate to reflect your exact scope.
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Receive a detailed, line by line mechanical estimate ready for tendering, budgeting, or client approval.
COMET Estimating provides dependable and accurate mechanical estimating services tailored to UK construction projects.
Hands on knowledge of mechanical systems and real world installation requirements.
Clear communication, revisions, and ongoing guidance throughout the process.
Transparent, detailed estimates with no hidden assumptions.
Mechanical estimates delivered within agreed schedules.
Let COMET Estimating bring clarity and cost certainty to your mechanical project. Our precise take offs and cost evaluations support smarter planning, stronger tenders, and improved project outcomes.



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Missing allowances for plant, fittings, accessories, or installation labour can rapidly increase total project costs and reduce margins.
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Incorrect take offs and poor planning lead to material shortages, labour clashes, and delayed equipment deliveries, slowing site progress.
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Incorrect sizing or incomplete planning affects system efficiency, operational performance, and long term reliability.
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Over ordering increases waste and storage costs, while under ordering causes stoppages and urgent reorders.
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Missing inspection, testing, or commissioning allowances can result in rework, failed approvals, and regulatory delays.
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Delays, cost overruns, and performance issues damage trust and reduce future opportunities.
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of Experience
Across the UK, contractors and developers trust COMET Estimating to deliver accurate, transparent, and cost effective mechanical estimating services. Our focus on precision helps contractors reduce risk, maintain cost control, and deliver projects with confidence.
Why Professionals Trust COMET Estimating
According to UK standards, COMET Estimating provides accurate, transparent mechanical cost estimates. Our estimators help you manage budgets, risk, and bid competitively. Get a mechanical estimate today and save 30% on your first order.
30 Riverhead Close, London, Walthamstow, England, E17 5PY
Monday - Friday
09:00 Am Until 05:00 PM