Premium plant room installation with insulated pipework
Plumbing · Heating · Renewables

Mechanical services, engineered.

A design-and-install practice for plumbing, heating and renewable systems — delivered to a measurable standard, on time, on schematic.

8+
Years in practice
200+
Systems commissioned
Renewables
Engineered systems
G3
Unvented qualified
PlumbAir

We design, route and commission mechanical services for residential and small commercial projects — methodically, to a documented standard.

Capabilities

Specified, installed,
commissioned.

All capabilities

Plumbing

Precision copper, plastic and press-fit installations, neatly routed and built to last.

  • First & second fix pipework
  • Leadwork & specialist joints
  • Mains upgrades & pressure correction

Heating systems

System-led design and installation across radiators, UFH and zoned controls.

  • System & combi boilers
  • Underfloor heating
  • Smart zoning & controls

Bathrooms

Premium bathroom renovations with concealed services and architectural finish.

  • Concealed cisterns & valves
  • Tiling-ready first fix
  • Lighting & ventilation integration

Heat pumps

Air source heat pump installations engineered for long-term efficiency.

  • ASHP design & install
  • Hydraulic separation
  • Buffer & volumiser sizing

Hot water cylinders

Unvented cylinders sized, installed and commissioned with full G3 compliance.

  • Unvented cylinders
  • Secondary return loops
  • Expansion & safety devices

Renewable systems

Low-carbon heating, hot water and electrical solutions integrated with existing services.

  • Solar PV
  • Battery storage
  • EV charging
  • Solar thermal
  • Hybrid heat pump systems
Daikin air source heat pump installed externally with anti-vibration mounts
Renewables

Air source heat pumps, properly engineered.

From heat-loss survey to commissioning — we design ASHP systems with the right hydraulic separation, buffer sizing and controls to deliver real-world efficiency over decades, not data sheets.

Design-led
Compliant design & install
Hydraulics
Sized buffers & volumisers
Acoustic
Anti-vibration mounting
Controls
Weather-compensated logic
Selected work

Real installations. Real standards.

View all projects
Daikin air source heat pump plant room with insulated pipework, buffer vessel and unvented cylinder
Plant Room Installation
New build · Renewable plant room
Daikin air source heat pump installed externally on anti-vibration mounts beside timber slatted fence
External ASHP Installation
Daikin Altherma · Air source heat pump
Labelled hot water, cold water and heating pipes neatly clipped to timber joists during first fix
First Fix Pipework
Timber frame · Pre-plaster
Marble luxury bathroom with concealed cistern, brushed brass towel rail and integrated lighting
Bathroom Renovation
Marble · Brushed brass · Concealed services
Worcester Bosch boiler with symmetrical copper pipework, isolation valves and magnetic filter
Cylinder Cupboard
Worcester Bosch · System install
Backlit shower niche in marble bathroom with brushed brass herringbone feature tile
Detailing & Finish
Tile niche · Concealed lighting
Two brass external bib taps mounted on dressed stone wall beside white meter housing
External Services
Outside taps · Meter housing
Why PlumbAir

Calm, organised, engineering-led delivery.

We work the way good engineers work — methodically, with planned routes, labelled circuits and a measurable handover.

Engineering-led thinking

Schematic-first, then setting out — no improvising on site.

Clean installations

Planned pipework routes, neat clipping, considered geometry.

Long-term performance

Sized correctly. Commissioned correctly. Documented.

High installation standards

Insulated and protected services across every trade.

Process

How we work.

A measured sequence — from first conversation to documented handover. No surprises, no improvisation.

  1. 01

    Consultation

    Understand brief, scope and constraints.

  2. 02

    Site assessment

    Survey, heat-loss and condition review.

  3. 03

    System design

    Schematics, sizing and specification.

  4. 04

    Installation

    Planned routes, clean first and second fix.

  5. 05

    Testing & commissioning

    Pressure, balance, safety and performance.

  6. 06

    Handover & aftercare

    Documentation, walkthrough, ongoing support.

Accreditations

Standards we hold ourselves to.

Certified, trained and insured — with the documentation to prove it.

Registered

Gas Safe

Registered for domestic gas installation, servicing and certification.

Certified

Renewable Training

Heat pump and low-carbon system design, installation and commissioning.

Certified

Manufacturer Training

Daikin, Worcester Bosch and other OEM-trained engineers.

Active

Fully Insured

Public liability and professional indemnity cover on every project.

Coming soon

NICEIC

Electrical installation accreditation for renewable and plant room work.

Member

SNIPEF

Member-aligned standards for plumbing and heating workmanship.

Insulated and labelled hot water, cold water and heating pipes during first fix
Case study

First fix, planned and labelled.

Challenge
Coordinate hot, cold and heating circuits within shallow service voids on a timber-frame new build — installed to NHBC and Premier Guarantee standards.
Solution
Pre-set routing grid, insulated runs, labelled services and protected penetrations — completed in accordance with modern new-build quality requirements.
Result
Structured first fix installation designed for long-term reliability and inspection compliance. Boards out cleanly and commissions without rework.
Technical capability

Built around the detail that matters.

From hydraulic separation to weather compensation — our installations are specified, sized and commissioned against measurable performance criteria.

Heat-loss & system design

Room-by-room calculation, emitter sizing and flow temperature targeting.

Hydraulic strategy

Low-loss headers, buffer logic and balanced circuits across zones.

Controls & telemetry

Weather compensation, zoning and remote monitoring integration.

Pressure & safety

G3 unvented systems, expansion sizing and discharge routing.

Future technologies

Low-carbon, integrated, ready.

Renewable systems engineered to work together — not bolted on as afterthoughts.

Solar PV

Roof-integrated arrays sized to household demand and battery capacity.

Battery storage

Inverter-led storage with tariff optimisation and grid export control.

EV charging

Load-balanced 7kW chargers wired into the wider home energy strategy.

Areas covered

Working across the region.

Residential and small commercial projects within a measured travel radius — keeping response times short and site presence consistent.

  • Edinburgh
  • Glasgow
  • Stirling
  • Fife
  • Lothians
  • Perthshire
  • Falkirk
  • Borders
Professional documentation

Every system, on paper.

Each installation handed over with the records that make ownership, inspection and aftercare straightforward.

Schematics & as-builts
Commissioning sheets & test records
Benchmark, Gas Safe & G3 certificates
Operation & maintenance manuals
Client experience

Quiet, considered, on schedule.

"The plant room is the cleanest installation we've had on a project. Documentation arrived the day of handover."
Architect
Residential new build
"Calm communication throughout. The system was designed properly before anything was ordered."
Private client
Heat pump retrofit
"First-fix routing was set out to drawing — second fix went in without a single revision."
Site manager
Boutique development
Reliability & maintainability

Designed to be lived with.

Serviceable layouts, accessible isolation points and labelled circuits — so future works are quick, clean and predictable.

Smart isolation

Every circuit isolatable without draining the system.

Service-ready

Components positioned for tool access and removal.

Logical layout

Manifolds, headers and pumps arranged by function.

Long warranties

Manufacturer-backed coverage on commissioned plant.

FAQ

Common questions.

Practical answers — the same ones we give in early conversations.

Do you take on full design-and-install projects?

Yes — the majority of our work is end-to-end, from heat-loss survey and schematic through to commissioning and handover documentation.

Can you work to an existing M&E specification?

Absolutely. We tender, value-engineer and install against consultant-issued drawings, feeding back constructability notes early in the process.

How long does a typical heat pump install take?

A standard residential ASHP retrofit runs 5–8 working days on site, preceded by survey and design. Larger or buffered systems extend accordingly.

Do you offer aftercare and servicing?

Yes. Annual servicing, performance reviews and minor optimisation are available for systems we commission, and selectively for systems we inherit.

Are renewable installations notifiable?

Most are — we handle building control notification, G99 applications and benchmarking as part of the install.

Premium marble bathroom with brushed brass details

Have a project in mind?

Send us your drawings, scope or a few photos. We'll come back with a clear proposal and a realistic timeline.

Start a conversation