HVAC design and heat load surveys in Carshalton
HVAC design and heat load surveys for businesses in Carshalton — 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 Carshalton?
Budget roughly £635–£3,150 per project ex VAT in Carshalton. 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.
Where we work around Carshalton
In Carshalton, commercial premises range from street-level shops and restaurants to offices in converted and modern buildings, many with managing agents and landlord consents to work through.
That includes premises in SM5 and the surrounding districts. We also cover Wallington, Sutton and Mitcham, all within easy reach of Carshalton. We plan work in Carshalton so the noisy parts happen when they disturb your business least.
What you get
- 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 Carshalton
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.
How a job in Carshalton works
Brief
We agree the use, occupancy, hours and budget. For sites in Carshalton 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.
Points to plan for in Carshalton
Diversity
Not every room peaks at once; good design accounts for diversity so central plant is not oversized.
Conservation areas
Historic streets and listed buildings in and around Carshalton are more likely to need planning permission for outdoor units on visible elevations. We check with the local planning authority before work is booked.
Future use
Allow for growth in occupancy or IT load.
Roof and height work
Flat roofs, high walls and atriums need the right access equipment and edge protection. We plan towers, MEWPs or scaffold before the job, not on the day.
Typical premises in Carshalton
- Offices: zoned cooling and heating for open-plan floors, meeting rooms and comms rooms.
- Healthcare and dental: clean, quiet cooling for surgeries, clinics, dental practices and care settings.
- Restaurants and cafés: dining rooms that stay comfortable next to a hot kitchen and a busy service.
- Hotels and hospitality: quiet bedroom units, public-area cooling and heat recovery for hotels.
In England, systems holding 5 tonnes CO2 equivalent of refrigerant or more fall under GB F-gas rules, with regular leak checks and records; buildings with more than 12 kW of air conditioning in total also need a periodic energy inspection.
FAQs for Carshalton
How much does HVAC design cost in Carshalton?
Guide prices in Carshalton 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 Wallington, Sutton and Mitcham?
Yes. Alongside Carshalton, we also cover Wallington, Sutton and Mitcham. Each has its own page with local guide prices.
Which postcodes do you cover in Carshalton?
All of them, including SM5. 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.
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.
Talk to us about your premises in Carshalton
Heat loads for single installations are free with a quote; design fees are confirmed before work starts.