HVAC design and heat load surveys in Isleworth
HVAC design and heat load surveys for businesses in Isleworth — surveyed, designed and priced in writing before any work starts.
- Design fees confirmed in writing first
- Equipment, positions and price set out in writing
- Work planned around your opening hours
How much does HVAC design cost in Isleworth?
Budget roughly £635–£3,150 per project ex VAT in Isleworth. For a typical job — design package for a 300–800 m² office — expect £1,250–£3,150 plus VAT. Your exact price is fixed in writing before any work starts.
An HVAC design and heat load survey works out how much heating and cooling each space needs — from occupancy, equipment, lighting, glazing, orientation and the building fabric — and sets out the system type, unit sizes and positions, pipe and duct routes and controls in a written specification.
Working in Isleworth
Premises in Isleworth are often in mixed-use buildings with shared roofs and tight access, so outdoor unit positions are agreed early.
Postcode districts we cover in Isleworth include TW7. Nearby, we also cover Hounslow (about 1 km), Heston (about 2 km) and Richmond (about 3 km). We plan work in Isleworth so the noisy parts happen when they disturb your business least.
What is included
- Room-by-room heat gain and heat loss calculations
- System options with pros, cons and budget costs
- Layout drawings for units, pipework and condensate
- Electrical load and supply requirements
- Noise data for planning or landlord approval
Guide prices in Isleworth
Prices below include our regional adjustment for London (28% above the UK guide).
| Item | Guide price (ex VAT) | Inc VAT | Basis |
|---|---|---|---|
| Heat load survey for a single installation | Free | Free | free with a quote |
| Design package, small premises | £635–£1,250 | £762–£1,500 | per project |
| Design package, larger premises | £1,250–£3,150 | £1,500–£3,780 | per project |
| Noise assessment data pack for planning | £380–£1,150 | £456–£1,380 | per project |
Ex VAT. Design fees for larger projects are credited against installation if we carry it out.
The steps for a project in Isleworth
Brief
We agree the use, occupancy, hours and budget.
Survey
We measure the space and record fabric, glazing and services.
Calculate and design
Loads are calculated and a system designed. In Isleworth we agree timings around your opening hours.
Specify
You receive drawings and a specification.
Things to check in Isleworth
Noise
Outdoor unit noise is designed in from the start, not fixed afterwards.
Shared buildings
In multi-let buildings, roof space, risers and plant areas are often controlled by a managing agent. We work to their permits and method-statement requirements.
Future use
Allow for growth in occupancy or IT load.
Neighbours and noise
Outdoor units near flats — common above shops — need careful siting so noise at neighbours' windows stays low. We choose positions and quieter units with that in mind.
Typical premises in Isleworth
- Pubs and bars: cooling for busy bars, function rooms and cellars, sited with neighbours in mind.
- Offices: zoned cooling and heating for open-plan floors, meeting rooms and comms rooms.
- Retail and shops: comfortable shop floors, stockrooms and entrances, even with the door open.
- Salons and spas: comfortable salons and treatment rooms despite dryers, lamps and steam.
Compliance in England: refrigerant work falls under GB F-gas rules, and buildings with more than 12 kW of air conditioning in total need a periodic energy inspection (often called TM44).
Questions about HVAC design in Isleworth
How much does HVAC design cost in Isleworth?
Guide prices in Isleworth run from about £635 to £3,150 per project, plus VAT. A typical job (design package for a 300–800 m² office) costs £1,250–£3,150 plus VAT. We confirm the price in writing before work starts.
Do you also cover Hounslow, Heston and Richmond?
Yes. Alongside Isleworth, we also cover Hounslow, Heston and Richmond. Each has its own page with local guide prices.
Which postcodes do you cover in Isleworth?
All of them, including TW7. Give us your postcode when you enquire and we will confirm the visit details.
Is the survey free?
For a straightforward installation, the survey and heat load are free with your quote. Full design packages for larger projects are charged and credited if we install.
Can you produce a specification for tender?
Yes. We produce drawings and a written specification so contractors price the same system.
Get a guide price for Isleworth
Heat loads for single installations are free with a quote; design fees are confirmed before work starts.