HVAC design and heat load surveys in Feltham
HVAC design and heat load surveys for businesses in Feltham — 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 Feltham?
Budget roughly £635–£3,150 per project ex VAT in Feltham. 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.
Covering Feltham and nearby
Feltham sits within London's dense commercial fabric: shopfronts, offices above, studios and venues, where outdoor unit positions and access need careful planning.
That includes premises in TW13 and the surrounding districts. Neighbouring towns we cover include Ashford, Surrey, Hounslow and Sunbury-on-Thames. Buildings across London range from converted period offices to modern units with deep ceiling voids, so we measure each site rather than relying on a standard package.
What the job covers
- 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
- Written specification for pricing
Prices in Feltham
Guide prices for Feltham, set for London. Your fixed price comes in writing.
| 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.
How a job in Feltham works
Brief
We agree the use, occupancy, hours and budget. For sites in Feltham we confirm access and parking beforehand.
Survey
We measure the space and record fabric, glazing and services.
Calculate and design
Loads are calculated and a system designed.
Specify
You receive drawings and a specification.
What to think about in Feltham
Coordination
Ceiling, lighting, sprinkler and electrical layouts are coordinated early.
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.
Noise
Outdoor unit noise is designed in from the start, not fixed afterwards.
Leased premises
If your Feltham premises are leased, the landlord's written consent is usually needed for external units, wall penetrations and roof access. We provide drawings and data sheets for the request.
Premises we work in around Feltham
- Schools and education: classroom cooling, ventilation and IT room cooling, installed in the holidays.
- Warehouses and industrial: cooling for offices, mezzanines, control rooms and temperature-sensitive areas.
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
- 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).
Common questions from businesses in Feltham
How much does HVAC design cost in Feltham?
Guide prices in Feltham 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 Ashford, Surrey, Hounslow and Sunbury-on-Thames?
Yes. Alongside Feltham, we also cover Ashford, Surrey, Hounslow and Sunbury-on-Thames. Each has its own page with local guide prices.
Which postcodes do you cover in Feltham?
All of them, including TW13. Give us your postcode when you enquire and we will confirm the visit details.
Can you produce a specification for tender?
Yes. We produce drawings and a written specification so contractors price the same system.
Do you provide noise data for planning?
Yes. We can supply manufacturer noise data and calculations to support a planning application.
Talk to us about your premises in Feltham
Heat loads for single installations are free with a quote; design fees are confirmed before work starts.