SELECT A SYSTEMCooling systemMatch pump speed to real building demand.
ENGINEERING-LED DECISIONS✳MEASURABLE ENERGY SAVINGS✳COMPLIANCE TO PERFORMANCE✳ONE CLEAR ESTATE VIEW
The Zerith approach / From obligation to outcome
Compliance is the requirement. Performance is the opportunity.
Every obligation reveals something about how a building operates. Zerith connects the evidence to engineering action, then helps verify what changed.
Establish a reliable picture of energy use, obligations and operational performance across the building or estate.
THE PERSON BEHIND ZERITHSimon TurnerFounder / Building performance specialist
Project spotlight / Chilled-water optimisation
One control change. About £30,000 saved a year.
A real Zerith project shows how operational insight can lead to a focused intervention with a fast payback.
ENGINEERING CASE STUDY
The pumps ran at fixed speed. The building didn’t.
Zerith found that primary and secondary chilled-water pumps continued operating at fixed speeds regardless of building demand. A targeted BeMS strategy made the pump follow the load—without expensive pipework alterations.
ObserveMap the real loadRead the operating pattern, not an assumption.
AlignMatch controlsLet speed respond to cooling demand.
ProveVerify the resultMeasure savings against delivery cost.
CHILLED WATER / PERFORMANCE STUDY◉ VERIFIED RESULT
Where fixed speed creates wasteInteractive operating comparison
Demand-matched operation
BEFOREFixed speed
Energy supplied regardless of need
Building demand Pump output
At quieter periods, output stays high. The shaded gap is energy with no useful demand.
AFTERDemand matched
Output tracks what the building needs
Building demand Pump output
The output follows the profile, so energy moves with the requirement rather than against it.
↻
The optimised control follows demand. The visual gap disappears because unnecessary pump output is removed.
Demand-matched pump speed
ANNUAL ENERGY COST SAVINGJust under £30,000
AUDIT + IMPLEMENTATION PAYBACK9 months
Illustrative control principle; published figures are from Zerith’s featured project.
Connected expertise
One estate. Every route to action.
Select the issue in front of you. The system map turns it into a live pathway—from the first question to a verified outcome.
Choose a focus6 connected capabilities
SYSTEM PATHWAY / 01 Live view
Find the hidden waste
Make systems work to actual demand.
Engineering-led audits, BeMS and HVAC analysis uncover where a building consumes more than it needs, then identify practical changes that can be implemented and measured.
01Read the estateSystem audit
Operational data and engineering assessment
02Make the decisionPrioritise controls
Target measures against cost and disruption
03Measure the outcomeVerified improvement
Implement and measure the result
The Zerith system
One connected view. Every route to performance.
Select a capability to reveal the decision it connects, without leaving this view.
Interactive opportunity explorer
What could better performance mean for your estate?
Adjust the inputs to see a simple scenario for annual energy spend. Actual opportunities require building data, engineering assessment and verification.
OPPORTUNITY SCENARIO ZERITH / EXPLORE
£100k£5m
1 building100 buildings
10%scenario
ANNUAL SPEND PER BUILDING£83,333IMPROVEMENT SELECTEDModerate opportunity
ILLUSTRATIVE ANNUAL SAVING£100,000
OVER FIVE YEARS*£500,000
*Simple undiscounted illustration at constant spend and improvement. No forecast, guarantee or estimate of Zerith's achievable results. Excludes project costs and energy price changes.
ZECO / Estate intelligence
From scattered data to one clear view.
Explore a demonstration of how one estate view can reveal differences between buildings. The sample data is illustrative, not Zerith client data.
Benchmark sites against one another
Spot operational waste and outliers
Prioritise opportunities with a consistent dataset
Connect evidence to action and investment
ZECO / ESTATE EXPLORERDEMONSTRATION DATA
SELECTED BUILDINGOffice North
RELATIVE ENERGY INDEX112
Relative energy use across six periodsIndex 100 = portfolio reference
Selected building Portfolio reference
ENGINEERING INTERPRETATION
The selected building sits above the reference. Review operational schedules and HVAC controls before deciding on an intervention.
Sample values for interface demonstration only. A real assessment requires comparable building and meter data.
Sector intelligence / Where Zerith works
Different estates. Different operating realities.
Choose an environment to see the pressures, engineering focus and decisions that matter there.
01 / COMMERCIAL REAL ESTATEZERITH / SECTOR LENS
OPERATING CONTEXTMixed-use portfolios
PRIORITY SYSTEMSHVAC · Controls · Metering
DECISION HORIZONAsset-by-asset investment
Make every building earn its place.
Align landlord, operator and occupier priorities through clearer energy data and practical building performance decisions.
THE PRESSURE
Rising energy cost, investor expectations and changing compliance obligations across mixed assets.
THE ENGINEERING FOCUS
Benchmark buildings, investigate outliers, improve controls and sequence investment by asset.
Zerith brings together more than 50 years of collective consultancy experience, with specialist capability spanning building engineering, compliance and energy modelling.
CIBSE Low Carbon Consultants
ESOS Lead Assessors
CIBSE Heat Network Consultants
ISO 50001 Accredited Assessor
IES VE Level 3, 4 and 5 modelling
Implementation and verification
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The Zerith team developed actionable insights and energy-saving solutions that gave us the confidence to invest in the recommended measures. The results speak for themselves.
Chairman / Commercial client
Start a conversation
Where is your estate losing value?
Tell us about your buildings, obligations and biggest energy consumers. We’ll help identify the right first question.
Your free 30-minute call
A practical first discussion, focused on where to look and what to do next.
